WO2023060537A1 - 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
WO2023060537A1
WO2023060537A1 PCT/CN2021/124014 CN2021124014W WO2023060537A1 WO 2023060537 A1 WO2023060537 A1 WO 2023060537A1 CN 2021124014 W CN2021124014 W CN 2021124014W WO 2023060537 A1 WO2023060537 A1 WO 2023060537A1
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WO
WIPO (PCT)
Prior art keywords
cavity
battery
bracket
battery cell
box
Prior art date
Application number
PCT/CN2021/124014
Other languages
English (en)
French (fr)
Inventor
李金凤
刘存瑞
黄仰枝
汪用广
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 EP21960270.3A priority Critical patent/EP4254622A4/en
Priority to CN202180090722.9A priority patent/CN116745977A/zh
Priority to PCT/CN2021/124014 priority patent/WO2023060537A1/zh
Publication of WO2023060537A1 publication Critical patent/WO2023060537A1/zh
Priority to US18/343,287 priority patent/US20230344059A1/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0404—Machines for assembling batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/202—Casings or frames around the primary casing of a single cell or a single battery
    • 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
    • H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
    • 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
    • H01M50/284—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with incorporated circuit boards, e.g. printed circuit boards [PCB]
    • 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
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/342—Non-re-sealable arrangements
    • H01M50/3425—Non-re-sealable arrangements in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/507—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules
    • 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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

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.
  • Energy saving and emission reduction is the key to the sustainable development of the automobile industry.
  • electric vehicles have become an important part of the sustainable development of the automobile industry due to their advantages in energy saving and environmental protection.
  • battery technology is an important factor related to its development.
  • the present application provides a battery, an electrical device, a method and a device for preparing the battery, which can improve the assembly efficiency of the battery.
  • a battery including: a battery cell; a bracket, the bracket is used to support the battery cell; and a box, the box is used to accommodate the bracket and the battery cell Body; wherein, the bracket divides the box into a first cavity and a second cavity, the first cavity is used to accommodate the first part of the battery cell, and the first part is provided with a pressure relief mechanism, the second cavity is used to accommodate the second part of the battery cell and the adhesive, and in the second cavity, the second part, the bracket and the box pass through the The adhesive is fixedly connected, wherein the pressure relief mechanism is configured to be activated to release the internal pressure when the internal pressure of the battery cell reaches a threshold value.
  • the battery of the embodiment of the present application divides the first cavity and the second cavity inside the box through the bracket, wherein the first cavity accommodates the first part of the battery cell, and the first part is provided with a pressure relief mechanism, the second cavity accommodates the second portion of the battery cell and the adhesive.
  • the second cavity, the second part of the battery cell, the bracket and the box can be fixedly connected by an adhesive to ensure that the battery cell and the bracket can be fixedly installed in the box to ensure the stability of the battery, and at the same time , under the action of the bracket, after the battery cell is fixed, the area where the pressure relief mechanism is located will not be affected by the adhesive, ensuring that the pressure relief mechanism can be used normally, which also ensures the safety performance of the battery.
  • the bracket is provided with a first opening, the first opening communicates with the second cavity, and the first opening is used to inject the adhesive into the second cavity. agent.
  • multiple battery cells and brackets can be fixed and installed first, then loaded into the lower box of the box, and finally the adhesive is directly injected through the first opening, without affecting the installation and setting of other components , can improve installation efficiency.
  • the bracket is provided with a glue blocking structure, and the glue blocking structure is used to prevent the adhesive in the second cavity from entering the first cavity.
  • the glue blocking structure is a first limiting groove, and a first limiting strip corresponding to the first limiting groove is provided on the inner surface of the wall of the box, and the first limiting strip corresponds to the first limiting groove.
  • the limiting strip is snapped into the first limiting groove to prevent the adhesive in the second cavity from entering the first cavity.
  • the route for the adhesive to overflow the second cavity can be increased, thereby preventing the adhesive from overflowing from the second cavity into the first cavity, avoiding sticking Failure of the pressure relief mechanism due to caulk spillage onto the surface of the pressure relief mechanism.
  • the inner surface of the wall of the box is further provided with a second limiting strip corresponding to the first limiting strip, and the first limiting strip and the second limiting strip A second limiting groove is formed, and one side wall of the first limiting groove is snapped into the second limiting groove to prevent the adhesive in the second cavity from entering the first cavity.
  • the route of adhesive overflow can be further increased, the risk of adhesive overflow can be reduced, and the failure of the pressure relief mechanism caused by adhesive overflow and blocking the surface of the pressure relief mechanism can be avoided .
  • the bracket includes a first wall, a second opening is provided on the first wall, the battery cell passes through the second opening, the first part and the second part are respectively located on both sides of the second opening.
  • the box can be divided into a first cavity and a second cavity by the first wall, that is, the first cavity and the second cavity are respectively located on two sides of the first wall.
  • the battery cell includes two first parts
  • the bracket further includes a second wall opposite to the first wall, a third opening is provided on the second wall, and the The battery cell passes through the second opening and the third opening, the second part is located between the second opening and the third opening, and the two first parts are respectively located in the first opening. Two sides of the part.
  • both end surfaces of the battery cell are located in the first cavity, and the pressure relief mechanism and the circuit board assembly provided on the end surfaces are also located in the first cavity, so that when the adhesive is injected into the second cavity, the The adhesive will not affect the pressure relief mechanism and circuit board components inside the first cavity, thus ensuring the safety of the battery.
  • an enclosure structure is provided at the second opening and/or the third opening, and the enclosure structure is perpendicular to the first wall or the second wall and extends to the outside of the bracket , the enclosure structure is used to support the battery cells.
  • the maintenance structure can be used to support the battery cell to ensure the stability of the battery cell.
  • the maintenance structure is attached to the outer surface of the battery cell, when injecting glue into the second cavity.
  • the adhesive will not flow out from the second opening or the third opening into the first cavity, and will not affect the pressure relief mechanism located in the first cavity, ensuring the normal use of the pressure relief mechanism, and will not affect the pressure relief mechanism located in the first cavity.
  • the electrode terminal and the circuit board assembly in the cavity ensure the normal installation and use of the battery.
  • the first wall is perpendicular to the bottom wall of the box.
  • the first part is further provided with electrode terminals, the electrode terminals are electrically connected through a bus component, and the first cavity is also used to accommodate the bus component.
  • the battery further includes: a circuit board assembly, the confluence component is disposed on the circuit board assembly, and the first cavity is also used to accommodate the circuit board assembly; There is a through hole, and a limiting column is arranged on the bracket, and the limiting column cooperates with the through hole to limit the circuit board assembly, so as to prevent the circuit board assembly from deflecting in the first cavity.
  • a boss is provided at the end of the limiting post far away from the bracket, the radial dimension of the boss is smaller than the radial dimension of the rest of the limiting post, and the through hole The dimension is greater than the radial dimension of the boss and smaller than the radial dimension of the remaining part of the limit post, so as to limit the circuit board assembly and prevent the circuit board assembly from occurring along the axial direction of the limit post. large displacement.
  • the bracket is provided with a first buckle
  • the side wall of the box is provided with a second buckle
  • the first buckle and the second buckle cooperate with each other to lock
  • the bracket is fixed in the box.
  • the battery cell is a cylindrical battery cell
  • the first part includes an end face of the cylindrical battery cell
  • the pressure relief mechanism is disposed on the end face of the cylindrical battery cell .
  • the battery cell may include two electrode terminals, and the two electrode terminals may be respectively located on two end faces of the cylindrical battery cell, so as to facilitate electrical connection between a plurality of battery cells. At least one of the two end faces of the cylindrical battery cell is provided with a pressure relief mechanism.
  • a profiling structure is provided on the inner surface of the bottom wall of the box, the profiling structure is located in the second cavity, and the surface of the profiling structure facing the second part Fitting the second part, the profiling structure is used to fill the space between the second part and the bottom wall of the box.
  • the profiling structure occupies a part of the space in the second cavity, which saves the space to be filled by the adhesive, reduces the amount of adhesive, and can reduce the cost. , It can also avoid overflow of the binder caused by excessive use of the binder, and improve the safety of the battery.
  • an electric device including: the battery in the first aspect, configured to provide electric energy for the electric device.
  • the electric device is a vehicle, ship or spacecraft.
  • a method for preparing a battery including: providing a battery cell; providing a bracket for supporting the battery cell; and providing a box for accommodating the battery cell.
  • a bracket and the battery cell wherein, the bracket divides the box into a first cavity and a second cavity, the first cavity is used to accommodate the first part of the battery cell, the The first part is provided with a pressure relief mechanism, the second cavity is used to accommodate the second part of the battery cell and the adhesive, and in the second cavity, the second part, the bracket and the The box body is fixedly connected by the adhesive, wherein the pressure relief mechanism is used to activate to release the internal pressure when the internal pressure of the battery cell reaches a threshold value.
  • a device for preparing a battery including a module for performing the method of the third aspect above.
  • Fig. 1 is a schematic structural view of a vehicle disclosed in an embodiment of the present application
  • Fig. 2 is a schematic diagram of an exploded structure of a battery disclosed in an embodiment of the present application
  • Fig. 3 is a schematic structural view of a stent disclosed in an embodiment of the present application.
  • Fig. 4 is a schematic structural view of a lower box housing a bracket disclosed in an embodiment of the present application
  • Fig. 5 is a schematic structural view of a lower box disclosed in an embodiment of the present application.
  • Fig. 6 is a schematic structural view of another lower box disclosed in an embodiment of the present application.
  • Fig. 7 is a side view of a lower box containing a bracket disclosed in an embodiment of the present application.
  • Fig. 8 is a cross-sectional view of the lower box housing the bracket shown in Fig. 7;
  • Fig. 9 is a schematic structural view of another lower box disclosed in an embodiment of the present application.
  • Fig. 10 is a schematic flowchart of a method for preparing a battery disclosed in an embodiment of the present application.
  • Fig. 11 is a schematic block diagram of a device for preparing a battery disclosed in 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 may be in a cylinder, a flat body, a cuboid or other regular or irregular 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 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 pole piece, a negative pole piece and a separator.
  • a battery cell works primarily by moving metal ions between the positive and negative pole pieces.
  • 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, and the positive electrode collector without the positive electrode active material layer protrudes from the positive electrode collector coated with the positive electrode active material layer. Fluid, the positive electrode current collector not coated with the positive electrode active material layer is used 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, and the negative electrode collector without the negative electrode active material layer protrudes from the negative electrode collector coated with the negative electrode active material layer. Fluid, the negative electrode current collector not coated with the negative electrode active material layer is used 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 may be polypropylene (polypropylene, PP) or polyethylene (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.
  • a pressure relief mechanism is generally installed on the battery cell.
  • the pressure relief mechanism refers to an element or part that is activated to release the internal pressure or temperature when the internal pressure or temperature of the battery cell reaches a predetermined threshold.
  • the predetermined threshold can be adjusted according to different design requirements.
  • the predetermined threshold may depend on the materials of one or more of the positive electrode sheet, the negative electrode sheet, the electrolyte and the separator in the battery cell.
  • the pressure relief mechanism can adopt elements or components that are sensitive to pressure or temperature, that is, when the internal pressure or temperature of the battery cell reaches a predetermined threshold, the pressure relief mechanism is actuated, thereby forming a pressure-sensitive or temperature-sensitive pressure relief mechanism. aisle.
  • the "actuation" mentioned in this application refers to the action of the pressure relief mechanism, so that the internal pressure and temperature of the battery cells can be released. Actions by the pressure relief mechanism may include, but are not limited to, at least a portion of the pressure relief mechanism rupture, be torn, or melt, among others. After the pressure relief mechanism is actuated, the high temperature and high pressure material inside the battery cell will be discharged from the pressure relief mechanism as discharge. In this way, the battery cells can be depressurized under controllable pressure or temperature, thereby avoiding potential more serious accidents.
  • the emissions from battery cells mentioned in this application include but are not limited to: electrolyte, dissolved or split positive and negative electrodes, fragments of separator, high temperature and high pressure gas generated by reaction, flame, etc.
  • the pressure relief mechanism on the battery cell has an important impact on the safety of the battery. For example, when a battery cell is short-circuited or overcharged, it may cause thermal runaway inside the battery cell, resulting in a sudden increase in pressure or temperature. In this case, the internal pressure and temperature can be released to the outside through the actuation of the pressure relief mechanism, so as to prevent the battery cells from exploding and igniting.
  • the position of each battery cell should be reasonably set so that the pressure relief mechanism of each battery cell is not affected, ensuring the safety performance of the battery.
  • battery cells with non-cuboid shape such as cylindrical battery cells
  • full consideration should be given to how to improve space utilization and also To ensure the stability and safety of the battery.
  • an embodiment of the present application provides a battery, which includes a plurality of battery cells, a bracket and a box, wherein the bracket is used to support the battery cells, and the box is used to accommodate the bracket and the battery cells.
  • the bracket divides the space in the box into a first cavity and a second cavity, the first cavity is used to accommodate the first part of the battery cell, and the first part includes a pressure relief mechanism; the second cavity is used to accommodate The second part of the battery cell and the binder.
  • the second part of the battery cell, the bracket and the box can be fixedly connected by an adhesive to ensure that the battery cell and the bracket can be fixedly installed in the box to ensure the stability of the battery, and at the same time , under the action of the bracket, after the battery cell is fixed, the area where the pressure relief mechanism is located will not be affected by the adhesive, ensuring that the pressure relief mechanism can be used normally, which also ensures the safety performance of the battery.
  • Electrical devices can be vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys and power tools, etc.
  • Vehicles can be fuel vehicles, gas vehicles or new energy vehicles, and new energy vehicles can be pure electric vehicles, hybrid vehicles or extended-range vehicles;
  • spacecraft include airplanes, rockets, space shuttles and spacecraft, etc.;
  • electric toys include fixed Type or mobile electric toys, such as game consoles, electric car toys, electric boat toys and electric airplane toys, etc.;
  • electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools and railway electric tools, for example, Electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, electric planers, and more.
  • the embodiment of the present application does not impose special limitations on the above electric equipment.
  • FIG. 1 it is a schematic structural diagram of a vehicle 100 according to an embodiment of the present application.
  • the vehicle 100 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 103 , a controller 102 and a battery 101 may be provided inside the vehicle 100 , and the controller 102 is used to control the battery 101 to supply power to the motor 103 .
  • the battery 101 may be provided at the bottom or front or rear of the vehicle 100 .
  • the battery 101 can be used for power supply of the vehicle 100 , for example, the battery 101 can be used as an operating power source of the vehicle 100 , for a circuit system of the vehicle 100 , for example, for starting, navigating, and operating power requirements of the vehicle 100 .
  • the battery 101 can not only be used as an operating power source for the vehicle 100 , but can also be used as a driving power source for the vehicle 100 , replacing or partially replacing fuel oil or natural gas to provide driving power for the vehicle 100 .
  • 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. Batteries can also be called battery packs.
  • 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, a plurality of battery cells may directly form a battery, or may first form a battery module, and the battery module then forms a battery, which is not limited in the embodiment of the present application.
  • FIG. 2 shows a schematic diagram of an exploded structure of a battery 101 according to an embodiment of the present application.
  • the battery 101 includes: a battery cell 10; a bracket 20, which is used to support the battery cell 10; and a box body 30, which is used to accommodate the bracket 20 and the battery Cell 10; wherein, the bracket 20 divides the box 30 into a first cavity 31 and a second cavity 32, the first cavity 31 is used to accommodate the first part 11 of the battery cell 10, the first part 11 is provided with a pressure relief mechanism 13.
  • the second cavity 32 is used to accommodate the second part 12 of the battery cell 10 and the adhesive. In the second cavity 32, the second part 12, the bracket 20 It is fixedly connected with the box body 30 by the adhesive, wherein the pressure relief mechanism 13 is used to activate to release the internal pressure when the internal pressure of the battery cell 10 reaches a threshold value.
  • the battery 101 of the embodiment of the present application divides the first cavity 31 and the second cavity 32 inside the box body 30 through the bracket 20, wherein the first cavity 31 accommodates the first part 11 of the battery cell 10 , the first part 11 is provided with a pressure relief mechanism 13, and the second cavity 32 accommodates the second part 12 of the battery cell 10 and the adhesive.
  • the bracket 20 and the box body 30 can be fixedly connected by an adhesive, so as to ensure that the battery cell 10 and the bracket 20 can be fixedly installed in the box body 30 , to ensure the stability of the battery 101, and at the same time, under the action of the bracket 20, after the battery cell 10 is fixed, the area where the pressure relief mechanism 13 is located will not be affected by the adhesive, ensuring that the pressure relief mechanism 13 can be used normally, that is, The safety performance of the battery 101 is guaranteed.
  • the battery 101 of the embodiment of the present application may include a box body 30 , and the inside of the box body 30 is a hollow structure for accommodating a plurality of battery cells 10 and the bracket 20 .
  • FIG. 2 only shows a possible implementation of the box body 30 of the embodiment of the present application.
  • the box body 30 may include two parts. The direction of the upper box body 33 and the lower box body 34 are respectively referred to herein, and the upper box body 33 and the lower box body 34 are buckled together to form the hollow structure of the box body 30 .
  • the shape of the box body 30 or the shapes of the upper box body 33 and the lower box body 34 may be set according to actual applications.
  • the box body 30 is a cuboid as an example for illustration, that is, the upper box body 33 and the lower box body 34 are buckled together to form a cuboid structure.
  • At least one of the upper box body 33 and the lower box body 34 in the embodiment of the present application has an opening.
  • the upper box body 33 and the lower box body 34 can be hollow cuboids and each has only one face as an opening surface, the opening of the upper box body 33 and the opening of the lower box body 34 are arranged oppositely, and the upper box body The box body 33 and the lower box body 34 are interlocked to form the box body 30 with a closed chamber.
  • only one of the upper box body 33 and the lower box body 34 may be a hollow cuboid with an opening, while the other may be plate-shaped to cover the opening.
  • the lower box body 34 is a hollow cuboid and only one face is an open surface
  • the upper box body 33 is a plate-shaped example
  • the upper box body 33 is covered at the opening of the lower box body 34 to form a box body with a closed chamber 30
  • the chamber can be used to accommodate a plurality of battery cells 10 .
  • a plurality of battery cells 10 are connected in parallel or connected in series or mixed and placed in the box 30 formed by fastening the upper box 33 and the lower box 34 .
  • the shapes of the battery cells 10 and the brackets 20 accommodated therein can be set according to actual applications.
  • the following description mainly takes the approximately rectangular parallelepiped bracket 20 and the cylindrical battery cell 10 as examples.
  • the cylindrical battery cell 10 has two circular end surfaces, and a cylinder is formed between the two circular end surfaces.
  • the column part may include an electrode assembly, and the electrode assembly may be formed by laminating or winding the part of the positive electrode sheet coated with the positive electrode active material layer and the part of the negative electrode sheet coated with the negative electrode active material layer.
  • the circular end surface may be provided with a pressure relief mechanism 13 and may also be provided with an electrode terminal 14 through which the electric energy of the battery cell 10 is output.
  • the battery cell 10 may have two electrode terminals 14, which are respectively a positive electrode terminal and a negative electrode terminal.
  • each electrode terminal 14 may be respectively arranged on a circular end surface That is, one end surface of the cylindrical battery cell 10 is provided with a positive electrode terminal, the other end surface is provided with a negative electrode terminal, and at least one of the two end surfaces is provided with a pressure relief mechanism 13 .
  • the battery 101 may further include a circuit board assembly 40, and the circuit board assembly 40 may include a confluence part 41, which is used to realize electrical connection between a plurality of battery cells 10, such as parallel or series or hybrid.
  • the bus member 41 can realize the electrical connection between the battery cells 10 by connecting the electrode terminals 14 of the battery cells 10 .
  • the bus member 41 may be fixed to the electrode terminal 14 of the battery cell 10 by welding.
  • the circuit board assembly 40 may also include other components, for example, may also include a circuit for detecting the temperature or voltage of the battery cell 10 , but the embodiment of the present application is not limited thereto.
  • the battery 101 of the embodiment of the present application may include a plurality of circuit board assemblies 40, for example, as shown in FIG. end face.
  • FIG. 3 shows a schematic structural diagram of the bracket 20 according to the embodiment of the present application
  • FIG. 4 shows a schematic structural diagram of the lower box 34 containing the bracket 20 according to the embodiment of the present application.
  • the bracket 20 is provided with a first opening 21 , the first opening 21 communicates with the second cavity 32 , and the first opening 21 is used for injecting into the second cavity 32
  • the adhesive is such that the adhesive can bond and fix the second part 12 of the battery cell 10 , the bracket 20 and the case 30 to ensure the stability of the battery.
  • the first opening 21 can be located on the top wall of the bracket 20, the top wall of the bracket 20 is parallel to the bottom wall of the lower box body 34, and is located at the opening of the lower box body 34, so that when the For the battery 101, after fixing and installing a plurality of battery cells 10 and the bracket 20, put them into the lower box body 34 of the box body 30, and finally inject the adhesive directly through the first opening 21 on the top wall without affecting other Installation and setting of components can improve installation efficiency.
  • the bracket 20 of the embodiment of the present application is placed in the box body 30, and the inner space of the box body 30 can be divided into a first cavity 31 and a second cavity 32, for example, the bracket 20 can include a first Wall 23, the box body 30 is divided into a first cavity 31 and a second cavity 32 by the first wall 23, the first wall 23 is perpendicular to the bottom wall of the lower box body 34, and is parallel to the lower box body 34 one of the side walls.
  • the first wall 23 is provided with a second opening 24, and the battery cell 10 passes through the second opening 24, so that the first part 11 and the second part 12 of the battery cell 10 They are respectively located on two sides of the second opening 24 , and the first part 11 is located in the first cavity 31 , and the second part is located in the second cavity 32 .
  • the battery 101 including four battery cells 10 as an example, four second openings 24 are provided on the first wall 23 for fixing the four battery cells. 10.
  • the bracket 20 for the bracket 20 used to support the cylindrical battery cell 10 , in order to maintain the stability of the structure, the bracket 20 may be configured as an axisymmetric structure. Specifically, as shown in FIGS. 2 to 4 , the bracket 20 may also include a second wall opposite to the first wall 23 , and the second wall is parallel to the first wall 23 , so that the inside of the box body 30 is The first wall 23 and the second wall are divided into two first cavities 31 and a second cavity 32 between the two first cavities 31, and the first cavity 31 and the second cavity 32 are mutually independent.
  • each battery cell 10 passes through the second opening 24 and the third opening opposite to it, so that each battery cell 10 may include two first parts and a second part located between the two first parts, the second part 12 is located between the second opening 24 and the third opening, and the two first parts 11 are respectively located in the second opening. Two sides of part 12.
  • both end surfaces of the battery cell 10 are located in the first cavity 31, so the pressure relief mechanism 13 and the circuit board assembly 40 provided on the end surfaces are also located in the first cavity 31, so that when moving to the second cavity When the adhesive is injected into the first cavity 32 , the adhesive will not affect the pressure relief mechanism 13 and the circuit board assembly 40 inside the first cavity 31 , ensuring the safety of the battery 101 .
  • an enclosure structure 25 is provided at the second opening 24 and/or the third opening, and the enclosure structure 25 is perpendicular to the first wall 23 or the second wall and extends to the outside of the bracket 20, the The enclosure structure 25 is used to support the battery cell 10 .
  • each second opening 24 and each third opening may be provided with a maintenance structure 25, which is consistent with the shape of the battery cell 10 and is a hollow cylinder, so that Each battery cell 10 may be placed within a maintenance structure 25 .
  • the maintenance structure 25 can be used to support the battery cell 10 to ensure the stability of the battery cell 10; During glue injection, excess adhesive will not flow out from the second opening 24 or the third opening into the first cavity 31, and will not affect the pressure relief mechanism 13 located in the first cavity 31, ensuring The normal use of the pressure relief mechanism 13 will not affect the electrode terminals 13 and the circuit board assembly 40 located in the first cavity 31 , ensuring the normal installation and use of the battery 101 .
  • the gap between the maintenance structure 25 and the surface of the battery cell 10 is generally set at 0 to 0.6 mm.
  • the circuit board assembly 40 is fixed outside the end faces of the battery cells 10 .
  • the bracket 20 can be provided with a limiting column 26, and correspondingly, the circuit board assembly 40 is provided with a through hole 42, and the limiting column 26 and the through hole 42 cooperate with each other, so that the circuit board assembly 40 limit. As shown in FIGS.
  • At least one limiting column 26 protruding from the surface of the first wall 23 may be provided on the first wall 23 of the bracket 20 , for example, two limiting columns 26 may be provided,
  • the circuit board assembly 40 is provided with a through hole 42, for example, the same number of through holes 42 as the limit post 26 can be provided, and the through hole 42 passes through at least a part of the limit post 26 to ensure that the circuit board assembly 26 No translation occurs in a plane parallel to the first wall 23 .
  • the end of the limit post 26 away from the bracket 20 can also be provided with a boss 261, the radial dimension of the boss 261 is smaller than the radial dimension of the rest of the limit post 26, the through hole
  • the size of 42 is larger than the radial size of the protrusion 261 and smaller than the radial size of the rest of the limiting post 26 , so as to limit the circuit board assembly 40 .
  • the boss 261 can make the circuit board assembly 40 located at the position of the boss 261 without too much movement along the axial direction of the limiting post 26 , thereby fixing The position of the circuit board assembly 40 is convenient for welding the circuit board assembly 40 and the battery cell 10 .
  • the bracket 20 can also be provided with a glue blocking structure 22,
  • the glue blocking structure 22 is used to prevent the adhesive in the second cavity 32 from entering the first cavity 31 .
  • the rubber blocking structure 22 of the embodiment of the present application can have multiple implementations.
  • the inner surface of 30 is provided with a structure corresponding to the first limiting groove 22 to cooperate with the first limiting groove 22 .
  • the inner surface of the wall of the box body 30 may be provided with a first limiting strip 35 corresponding to the first limiting groove 22, and the first limiting strip 35 is snapped into the first limiting groove 22.
  • a limiting groove 22 is used to prevent the adhesive in the second cavity 32 from entering the first cavity 31 .
  • Fig. 5 shows a possible implementation of the lower box body 34 of the embodiment of the present application. As shown in Fig. 5, a first limiting strip 35 is provided on the inner surface of at least one wall of the box body 30, for example , the two side walls and one bottom wall of the lower box 34 in Fig.
  • the overflow route of the second cavity 32 prevents the adhesive from overflowing from the second cavity 32 into the first cavity 31 , and prevents the adhesive from overflowing to the surface of the pressure relief mechanism 13 to cause failure of the pressure relief mechanism 13 .
  • a second limiting strip 36 corresponding to the first limiting strip 35 may also be provided on the inner surface of the wall of the box body 30.
  • a limiting strip 35 and the second limiting strip 36 form a second limiting groove, and a side wall 221 of the first limiting groove snaps into the second limiting groove to prevent the second cavity 32 from The adhesive enters the first cavity 31 .
  • Fig. 6 shows another possible implementation of the lower case 34 of the embodiment of the present application
  • Fig. 7 is a side view of the case where the lower case 34 shown in Fig.
  • FIG. 7 The schematic cross-sectional view of the lower box body 34 containing the bracket 20 is shown, and the cross-section is the cross-section along the AA' direction shown in FIG. 7 .
  • a first limiting strip 35 and a second limiting strip 36 are arranged on the inner surface of at least one wall of the lower box body 34, and the first limiting strip 35 and the second limiting strip 36 are parallel to each other to form a second limiting groove.
  • the second limiting groove is provided on two side walls and a bottom wall of the lower box body 34 in the figure, and the first limiting groove on the bracket 20 has two One of the side walls 221 is snapped into the second limiting groove to prevent the adhesive in the second cavity 32 from entering the first cavity 31 . In this way, the route of adhesive overflow can be further increased, the risk of adhesive overflow can be reduced, and the failure of the pressure relief mechanism 13 caused by the adhesive overflow and covering the surface of the pressure relief mechanism 13 can be avoided.
  • the first rubber bead 35 on a wall can be an integral structure connected to each other, such as shown in Figure 5; Strip structure, for example, as shown in Figure 6, the gap between a plurality of first rubber strips 35 can be used to avoid the structure on the support 20, or can also be used to avoid other parts in the box body 30; similar Yes, the second rubber strips 36 on the multiple walls may also be an integral structure connected to each other or multiple structures separated from each other, which is not limited in this embodiment of the present application.
  • a profiled structure 38 may also be provided on the inner surface of the bottom wall of the box body 30 in the embodiment of the present application, and the profiled structure 38 may be located on the bottom wall of the lower box body 34 and located in the second cavity 32 , the surface of the profiling structure 38 facing the second part 12 fits the second part 12 , and the profiling structure 38 is used to fill the space between the second part 12 and the bottom wall of the box body 30 .
  • FIG. 9 shows another possible implementation of the lower box body 34 of the embodiment of the present application.
  • the structure 38 can fit the surface of the battery cell 10.
  • the surface of the profiling structure 38 facing the battery cell 10 is arc-shaped, and the profiling structure 38 can fill the battery cell.
  • the profiling structure 38 occupies a part of the space in the second cavity 32 , saving the space to be filled by the binder, reducing the amount of the binder, which can not only reduce the cost, but also avoid overflow of the binder caused by excessive usage of the binder, and improve the safety of the battery 101 .
  • the battery cell 10 , the bracket 20 and the box body 30 in the embodiment of the present application can be fixedly connected by an adhesive.
  • the bracket 20 can also be provided with a first buckle 27
  • the box body 30 A second buckle 37 is disposed on the side wall of the sidewall, and the first buckle 27 and the second buckle 37 cooperate with each other to fix the bracket 20 in the box body 30 .
  • the bracket 20 may be provided with a plurality of first buckles 27
  • the box body 30 may also be provided with a plurality of corresponding second buckles 37 .
  • two first buckles 27 are provided on one side wall of the bracket 20 along the first direction X, and the first direction X can be the length direction of the bracket, correspondingly, the box body
  • Two second buckles 37 are provided on a side wall of the housing 30 so that the bracket 20 will not move along the second direction Z in the box body 30 , and the second direction Z is the height direction of the bracket 20 .
  • a plurality of battery cells 10 can be fixed to the bracket 20 first, for example, the battery cells 10 can be fixed through the second opening 24 and/or the third opening, and then the circuit board assembly 40 and the battery cells can be fixed together.
  • the body 10 is fixed, for example, by cooperating with the limiting posts 26 and the through holes 42 to position the circuit board assembly 40, and fixing the circuit board assembly 40 and the battery cells 10 by welding or other means, so as to realize multiple battery cells The assembly process between the body 10 and the bracket 20.
  • the battery 101 and the electrical device 100 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. 10 shows a schematic flowchart of a method 500 for preparing a battery according to an embodiment of the present application.
  • the method 500 may include: S510, providing the battery cell 10; S520, providing the bracket 20, the bracket 20 is used to support the battery cell 10; and, S530, providing the box 30, the box 30 is used to accommodate the bracket 20 and the battery cell 10; wherein, the bracket 20 divides the box body 30 into a first cavity 31 and a second cavity 32, and the first cavity 31 is used to accommodate the battery cell
  • the first part 11 of the body 10, the first part 11 is provided with the pressure relief mechanism 13, the second cavity 32 is used to accommodate the second part 12 of the battery cell 10 and the adhesive, in the second cavity 32 , the second part 12, the bracket 20 and the box body 30 are fixedly connected by the adhesive, wherein the pressure relief mechanism 13 is used to actuate when the internal pressure of the battery cell 10 reaches a threshold value to release the internal pressure.
  • FIG. 11 shows a schematic block diagram of a device 600 for preparing a battery according to an embodiment of the present application.
  • the device 600 may include: a first supply module 610 for providing the battery cell 10; a second supply module 620 for providing a bracket 20 for supporting the battery cell 10 and, the third providing module 630 is used to provide the box body 30, the box body 30 is used to accommodate the bracket 20 and the battery cell 10; wherein, the bracket 20 divides the box body 30 into a first cavity 31 And the second cavity 32, the first cavity 31 is used to accommodate the first part 11 of the battery cell 10, the first part 11 is provided with the pressure relief mechanism 13, the second cavity 32 is used to accommodate the battery cell
  • the second part 12 of 10 and the adhesive, in the second cavity 32, the second part 12, the bracket 20 and the box body 30 are fixedly connected by the adhesive, wherein the pressure relief mechanism 13 is used is activated to release the internal pressure when the internal pressure of the battery cell 10 reaches a threshold.

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  • Electrochemistry (AREA)
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  • Battery Mounting, Suspending (AREA)

Abstract

本申请实施例提供一种电池、用电设备、制备电池的方法和设备。该电池包括：电池单体；支架，该支架用于支撑该电池单体；以及，箱体，该箱体用于容纳该支架和该电池单体；其中，该支架将该箱体分隔为第一腔体和第二腔体，该第一腔体用于容纳该电池单体的第一部分，该第一部分设置有泄压机构，该第二腔体用于容纳该电池单体的第二部分和粘接剂，在该第二腔体内，该第二部分、该支架和该箱体通过该粘接剂固定连接，其中，该泄压机构用于在该电池单体的内部压力达到阈值时致动以泄放该内部压力。本申请提供的电池、用电设备、制备电池的方法和设备，能够提高电池的装配效率。

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
节能减排是汽车产业可持续发展的关键。在这种情况下，电动车辆由于其节能环保的优势成为汽车产业可持续发展的重要组成部分。而对于电动车辆而言，电池技术又是关乎其发展的一项重要因素。
在电池技术的发展中，圆柱形的电池由单体使用逐渐转向于模块化，即组装成大容量电池组，以应用于电动自行车和电动汽车等领域。那么，如何将多个圆柱形电池单体进行组装，以提高装配效率是目前亟待解决的问题。
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，能够提高电池的装配效率。
第一方面，提供了一种电池，包括：电池单体；支架，所述支架用于支撑所述电池单体；以及，箱体，所述箱体用于容纳所述支架和所述电池单体；其中，所述支架将所述箱体分隔为第一腔体和第二腔体，所述第一腔体用于容纳所述电池单体的第一部分，所述第一部分设置有泄压机构，所述第二腔体用于容纳所述电池单体的第二部分和粘接剂，在所述第二腔体内，所述第二部分、所述支架和所述箱体通过所述粘接剂固定连 接，其中，所述泄压机构用于在所述电池单体的内部压力达到阈值时致动以泄放所述内部压力。
因此，本申请实施例的电池，通过支架在箱体的内部分割出第一腔体和第二腔体，其中，第一腔体容纳该电池单体的第一部分，该第一部分设置有泄压机构，该第二腔体容纳该电池单体的第二部分和粘接剂。在第二腔体中，电池单体的第二部分、支架以及箱体可以通过粘结剂固定连接，以保证该电池单体和支架能够固定安装于箱体内，保证该电池的稳定性，同时，在支架的作用下，电池单体固定后，泄压机构所在区域不受粘结剂的影响，保证泄压机构可以正常使用，也就保证了电池的安全性能。
在一些实施例中，所述支架上设置有第一开口，所述第一开口与所述第二腔体连通，所述第一开口用于向所述第二腔体中注入所述粘接剂。
在安装该电池时，可以先将多个电池单体与支架固定安装之后，装入箱体的下箱体中，最后通过该第一开口直接注入粘结剂，不影响其他部件的安装和设置，能够提高安装效率。
在一些实施例中，所述支架上设置有挡胶结构，所述挡胶结构用于阻止所述第二腔体中的所述粘接剂进入所述第一腔体。
在一些实施例中，所述挡胶结构为第一限位槽，所述箱体的壁的内表面上设置有与所述第一限位槽对应的第一限位条，所述第一限位条卡入所述第一限位槽，以阻止所述第二腔体中的所述胶粘剂进入所述第一腔体。
通过第一限位条与第一限位槽之间的配合，能够增加粘结剂溢出第二腔体的路线，从而阻止粘结剂从第二腔体溢出至第一腔体中，避免粘结剂溢出至泄压机构的表面而导致的泄压机构失效。
在一些实施例中，所述箱体的壁的内表面上还设置有与所述第一限位条对应的第二限位条，所述第一限位条与所述第二限位条形成第二限位 槽，所述第一限位槽的一个侧壁卡入所述第二限位槽，以阻止所述第二腔体中的所述胶粘剂进入所述第一腔体。
通过设置两个限位槽之间的相互配合，能够进一步增加粘结剂溢出的路线，减少粘结剂溢出的风险，避免粘结剂溢出并遮挡泄压机构的表面而导致的泄压机构失效。
在一些实施例中，所述支架包括第一壁，所述第一壁上设置有第二开口，所述电池单体穿过所述第二开口，所述第一部分和所述第二部分分别位于所述第二开口的两侧。
箱体可以通过该第一壁分为第一腔体和第二腔体，即该第一腔体和第二腔体分别位于该第一壁的两侧。
在一些实施例中，所述电池单体包括两个所述第一部分，所述支架还包括与所述第一壁相对的第二壁，所述第二壁上设置有第三开口，所述电池单体穿过所述第二开口和所述第三开口，所述第二部分位于所述所述第二开口和所述第三开口之间，两个所述第一部分分别位于所述第二部分的两侧。
因此，在安装电池单体时，只需要将每个电池单体设置于对应的第二开口和第三开口中，即可完成电池单体的定位，安装过程简洁快速。并且，电池单体的两个端面均位于第一腔体内，那么端面上设置的泄压机构以及电路板组件也位于第一腔体内，这样，在向第二腔体内注入粘结剂时，该粘结剂不会对第一腔体内部的泄压机构以及电路板组件造成影响，保证该电池的安全性。
在一些实施例中，所述第二开口和/或所述第三开口处设置有围护结构，所述围护结构垂直于所述第一壁或第二壁且向所述支架的外部延伸，所述围护结构用于支撑所述电池单体。
一方面该维护结构可以用于支撑电池单体，保证电池单体的稳定 性，另一方面，由于维护结构贴合电池单体的外表面，在向第二腔体内部注胶时，多余的粘结剂就不会从第二开口或者第三开口处流出至第一腔体内，也就不会影响位于第一腔体内的泄压机构，保证泄压机构正常使用，也不会影响位于第一腔体内的电极端子和电路板组件，保证该电池的正常安装和使用。
在一些实施例中，所述第一壁垂直于所述箱体的底壁。
在一些实施例中，所述第一部分还设置有电极端子，所述电极端子通过汇流部件电连接，所述第一腔体还用于容纳所述汇流部件。
在一些实施例中，所述电池还包括：电路板组件，所述汇流部件设置于所述电路板组件上，所述第一腔体还用于容纳电路板组件；所述电路板组件上设置有通孔，所述支架上设置有限位柱，所述限位柱与所述通孔相互配合，以对所述电路板组件进行限位，以避免电路板组件在第一腔体内偏转。
在一些实施例中，所述限位柱的远离所述支架的端部设置有凸台，所述凸台的径向尺寸小于所述限位柱的其余部分的径向尺寸，所述通孔的尺寸大于所述凸台的径向尺寸且小于所述限位柱的其余部分的径向尺寸，以对所述电路板组件进行限位，以避免电路板组件沿限位柱的轴向发生较大位移。
在一些实施例中，所述支架上设置有第一卡扣，所述箱体的侧壁上设置有第二卡扣，所述第一卡扣和所述第二卡扣相互配合，以将所述支架固定于所述箱体内。
在一些实施例中，所述电池单体为圆柱形电池单体，所述第一部分包括所述圆柱形电池单体的端面，所述泄压机构设置于所述圆柱形电池单体的端面上。
电池单体可以包括两个电极端子，该两个电极端子可以分别位于圆 柱形电池单体的两个端面，以便于实现多个电池单体之间的电连接。圆柱形电池单体的两个端面中的至少一个端面设置有泄压机构。
在一些实施例中，所述箱体的底壁的内表面上设置有仿形结构，所述仿形结构位于所述第二腔体内，所述仿形结构的朝向所述第二部分的表面贴合所述第二部分，所述仿形结构用于填补所述第二部分与所述箱体的底壁之间的空间。
这样，在该第二腔体内注入粘结剂时，该仿形结构占用了第二腔体内的一部分空间，节省了粘结剂需要填充的空间，减少了粘结剂的用量，既能够减少成本，也可以避免粘结剂用量过多导致粘结剂溢出，提高电池的安全性。
第二方面，提供了一种用电设备，包括：第一方面中的电池，用于为用电设备提供电能。
在一些实施例中，所述用电设备为车辆、船舶或航天器。
第三方面，提供了一种制备电池的方法，包括：提供电池单体；提供支架，所述支架用于支撑所述电池单体；以及，提供箱体，所述箱体用于容纳所述支架和所述电池单体；其中，所述支架将所述箱体分隔为第一腔体和第二腔体，所述第一腔体用于容纳所述电池单体的第一部分，所述第一部分设置有泄压机构，所述第二腔体用于容纳所述电池单体的第二部分和粘接剂，在所述第二腔体内，所述第二部分、所述支架和所述箱体通过所述粘接剂固定连接，其中，所述泄压机构用于在所述电池单体的内部压力达到阈值时致动以泄放所述内部压力。
第四方面，提供了一种制备电池的设备，包括执行上述第三方面的方法的模块。
附图说明
图1是本申请一实施例公开的一种车辆的结构示意图；
图2是本申请一实施例公开的一种电池的分解结构示意图；
图3是本申请一实施例公开的一种支架的结构示意图；
图4是本申请一实施例公开的一种容纳有支架的下箱体的结构示意图；
图5是本申请一实施例公开的一种下箱体的结构示意图；
图6是本申请一实施例公开的另一种下箱体的结构示意图；
图7是本申请一实施例公开的一种容纳有支架的下箱体的侧视图；
图8是图7所示的容纳有支架的下箱体的截面图；
图9是本申请一实施例公开的再一种下箱体的结构示意图；
图10是本申请一实施例公开的制备电池的方法的示意性流程图；
图11是本申请一实施例公开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，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、长方体或其它规则或者不规则的形状，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，电极组件由正极极片、负极极片和隔离膜组成。电池单体主要依靠金属离子在正极极片和负极极片之间移动来工作。正极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正极集流体凸出于已涂覆正极活性物质层的正极集流体，未涂敷正极活性物质层的正极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负极集流体凸出于已涂覆负极活性物质层的负极集流体，未涂敷负极活性物质层的负极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(polypropylene，PP)或聚乙烯(polyethylene，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。
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、充放电倍率等性能参数，另外，还需要考虑电池的安全性。
对于电池来说，主要的安全危险来自于充电和放电过程，为了提高电池的安全性能，对电池单体一般会设置泄压机构。泄压机构是指电池单体的内部压力或温度达到预定阈值时致动以泄放内部压力或温度的元件或部件。该预定阈值可以根据设计需求不同而进行调整。所述预定阈值可取决于电池单体中的正极极片、负极极片、电解液和隔离膜中一种或几种的材料。泄压机构可以采用诸如对压力敏感或温度敏感的元件或部件，即，当电池单体的内部压力或温度达到预定阈值时，泄压机构致动，从而形成可供内部压力或温度泄放的通道。
本申请中所提到的“致动”是指泄压机构产生动作，从而使得电池单体的内部压力及温度得以被泄放。泄压机构产生的动作可以包括但不限于：泄压机构中的至少一部分破裂、被撕裂或者熔化，等等。泄压机构在致动后，电池单体内部的高温高压物质作为排放物会从泄压机构向外排出。以此方式能够在可控压力或温度的情况下使电池单体发生泄压，从而避免潜在的更严重的事故发生。
本申请中所提到的来自电池单体的排放物包括但不限于：电解液、被溶解或分裂的正负极极片、隔离膜的碎片、反应产生的高温高压气体、火焰，等等。
电池单体上的泄压机构对电池的安全性有着重要影响。例如，当电池单体发生短路、过充等现象时，可能会导致电池单体内部发生热失控从而压力或温度骤升。这种情况下通过泄压机构致动可以将内部压力及温度向外释放，以防止电池单体爆炸、起火。
因此，在电池装配过程中，应合理设置每个电池单体的位置，以使得每个电池单体的泄压机构不受影响，保证电池的安全性能。尤其是对于非长方体形状的电池单体而言，例如圆柱形电池单体，由于电池单体本身形状的限制，在将多个电池单体进行组装时，应充分考虑如何提高空间利 用率，还要保证电池的稳定性以及安全性。
因此，本申请实施例提供了一种电池，该电池包括多个电池单体、支架和箱体，其中，支架用于支撑电池单体，箱体用于容纳支架和电池单体。具体地，支架将箱体内的空间分隔为第一腔体和第二腔体，第一腔体用于容纳电池单体的第一部分，该第一部分包括泄压机构；第二腔体用于容纳电池单体的第二部分和粘结剂。在第二腔体中，电池单体的第二部分、支架以及箱体可以通过粘结剂固定连接，以保证该电池单体和支架能够固定安装于箱体内，保证该电池的稳定性，同时，在支架的作用下，电池单体固定后，泄压机构所在区域不受粘结剂的影响，保证泄压机构可以正常使用，也就保证了电池的安全性能。
本申请实施例描述的技术方案均适用于各种使用电池的用电设备。
用电设备可以是车辆、手机、便携式设备、笔记本电脑、轮船、航天器、电动玩具和电动工具等等。车辆可以是燃油汽车、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；航天器包括飞机、火箭、航天飞机和宇宙飞船等等；电动玩具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；电动工具包括金属切削电动工具、研磨电动工具、装配电动工具和铁道用电动工具，例如，电钻、电动砂轮机、电动扳手、电动螺丝刀、电锤、冲击电钻、混凝土振动器和电刨等等。本申请实施例对上述用电设备不做特殊限制。
以下实施例为了方便说明，以用电设备为车辆为例进行说明。
例如，如图1所示，为本申请一个实施例的一种车辆100的结构示意图，车辆100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100的内部可以设置马达103，控制器102以及电池101，控制器102用来控制电池101为马达103的供电。例如，在车辆100的底部或车头或车尾可以设置电池101。电池101可以用于车辆100的供电，例如，电池101可以作为车辆100的操作电源，用于车辆100的电路系统，例如，用于车辆100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101 不仅仅可以作为车辆100的操作电源，还可以作为车辆100的驱动电源，替代或部分地替代燃油或天然气为车辆100提供驱动动力。
为了满足不同的使用电力需求，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。电池也可以称为电池包。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，本申请实施例并不限于此。
图2示出了本申请实施例的电池101的分解结构示意图。如图2所示，该电池101包括：电池单体10；支架20，该支架20用于支撑该电池单体10；以及，箱体30，该箱体30用于容纳该支架20和该电池单体10；其中，该支架20将该箱体30分隔为第一腔体31和第二腔体32，该第一腔体31用于容纳该电池单体10的第一部分11，该第一部分11设置有泄压机构13，该第二腔体32用于容纳该电池单体10的第二部分12和粘接剂，在该第二腔体32内，该第二部分12、该支架20和该箱体30通过该粘接剂固定连接，其中，该泄压机构13用于在该电池单体10的内部压力达到阈值时致动以泄放该内部压力。
因此，本申请实施例的电池101，通过支架20在箱体30的内部分割出第一腔体31和第二腔体32，其中，第一腔体31容纳该电池单体10的第一部分11，该第一部分11设置有泄压机构13，该第二腔体32容纳该电池单体10的第二部分12和粘接剂。在第二腔体32中，电池单体10的第二部分12、支架20以及箱体30可以通过粘结剂固定连接，以保证该电池单体10和支架20能够固定安装于箱体30内，保证该电池101的稳定性，同时，在支架20的作用下，电池单体10固定后，泄压机构13所在区域不受粘结剂的影响，保证泄压机构13可以正常使用，也就保证了电池101的安全性能。
下面将结合附图对本申请实施例的电池101进行详细描述。
应理解，本申请实施例的电池101可以包括箱体30，箱体30内部为中空结构，以用于容纳多个电池单体10以及支架20。可选地，图2仅 示出了本申请实施例的箱体30的一种可能的实现方式，如图2所示，箱体30可以包括两部分，为了便于区分，按照如图2所示的方向，这里分别称为上箱体33和下箱体34，上箱体33和下箱体34扣合在一起，以形成箱体30的中空结构。
在本申请实施例中，箱体30的形状或者说上箱体33和下箱体34的形状可以根据实际应用进行设置。例如，本申请以箱体30为长方体为例进行说明，即上箱体33与下箱体34扣合形成长方体结构。
本申请实施例中的上箱体33和下箱体34中至少一个具有一个开口。例如，如图2所示，该上箱体33和下箱体34均可以为中空长方体且各自只有一个面为开口面，上箱体33的开口和下箱体34的开口相对设置，并且上箱体33和下箱体34相互扣合形成具有封闭腔室的箱体30。
再例如，不同于图2所示，上箱体33和下箱体34中可以仅有一个为具有开口的中空长方体，而另一个为板状，以盖合开口。例如，这里以下箱体34为中空长方体且只有一个面为开口面，上箱体33为板状为例，那么上箱体33盖合在下箱体34的开口处以形成具有封闭腔室的箱体30，该腔室可以用于容纳多个电池单体10。多个电池单体10相互并联或串联或混联组合后置于上箱体33和下箱体34扣合后形成的箱体30内。
可选地，对于长方体的箱体30，容纳于其内部的电池单体10和支架20的形状可以根据实际应用进行设置。为了便于说明，下文中主要以近似为长方体的支架20以及圆柱形电池单体10为例进行描述。具体地，如图2所示，该圆柱形电池单体10具有两个圆形端面，该两个圆形端面之间为柱体。其中，该柱体部分可以包括电极组件，该电极组件可以由正极极片上涂覆有正极活性物质层的部分和负极极片上涂覆有负极活性物质层的部分层叠形成或者卷绕形成。该圆形端面可以设置有泄压机构13，还可以设置有电极端子14，通过该电极端子14输出该电池单体10的电能。电池单体10可以具有两个电极端子14，该两个电极端子14分别为正电极端子和负电极端子，例如，如图2所示，每个电极端子14可以分别设置于一个圆形端面上，即该圆柱形电池单体10的一个端面设置有正电极端子，另一个端面设置有负电极端子，而该两个端面中的至少一个端面上设 置有泄压机构13。
如图2所示，该电池101还可以包括电路板组件40，该电路板组件40可以包括汇流部件41，该汇流部件41用于实现多个电池单体10之间的电连接，例如并联或串联或混联。具体地，汇流部件41可通过连接电池单体10的电极端子14实现电池单体10之间的电连接。进一步地，汇流部件41可通过焊接固定于电池单体10的电极端子14。
可选地，该电路板组件40还可以包括其他部件，例如，还可以包括用于检测电池单体10的温度或者电压等使用状态的电路，但本申请实施例并不限于此。
本申请实施例的电池101中可以包括多个电路板组件40，例如，如图2所示，可以包括两个电路板组件40，该两个电路板组件40分别可以位于电池单体10的两个端面。
下面将结合附图详细描述本申请实施例的支架20。图3示出了本申请实施例的支架20的结构示意图，图4示出了本申请实施例的容纳有支架20的下箱体34的结构示意图。如图2至图4所示，该支架20上设置有第一开口21，该第一开口21与该第二腔体32连通，该第一开口21用于向该第二腔体32中注入该粘接剂，以使得该粘结剂可以将电池单体10的第二部分12、支架20以及箱体30粘结固定，保证该电池的稳定性。可选地，该第一开口21可以位于该支架20的顶壁上，该支架20的顶壁平行于下箱体34的底壁，且位于下箱体34的开口处，这样，在安装该电池101时，将多个电池单体10与支架20固定安装之后，装入箱体30的下箱体34中，最后通过该顶壁上的第一开口21直接注入粘结剂，不影响其他部件的安装和设置，能够提高安装效率。
应理解，本申请实施例的该支架20置于箱体30内，可以将该箱体30的内部空间分割出第一腔体31和第二腔体32，例如，该支架20可以包括第一壁23，由该第一壁23将箱体30分割为第一腔体31和第二腔体32，该第一壁23垂直于下箱体34的底壁，且平行于该下箱体34的一个侧壁。
在本申请实施例中，该第一壁23上设置有第二开口24，该电池单 体10穿过该第二开口24，以使得该电池单体10的第一部分11和该第二部分12分别位于该第二开口24的两侧，且第一部分11位于第一腔体31，第二部分位于第二腔体32。例如，如图2至图4所示，以该电池101包括四个电池单体10为例，则第一壁23上设置有四个第二开口24，以用于固定该四个电池单体10。
在本申请实施例中，对于用于支撑圆柱形电池单体10的支架20，为了保持结构的稳定，可以将该支架20设置为轴对称结构。具体地，如图2至图4所示，该支架20还可以包括与该第一壁23相对的第二壁，该第二壁与第一壁23平行，这样，该箱体30内被该第一壁23和第二壁分为两个第一腔体31以及位于两个第一腔体31之间的第二腔体32，并且第一腔体31和第二腔体32之间相互独立。另外，与第一壁23对应的，该第二壁上设置有第三开口，每个电池单体10穿过该第二开口24和与之相对的第三开口，这样，每个电池单体10可以包括两个第一部分以及位于两个第一部分之间的第二部分，该第二部分12位于该该第二开口24和该第三开口之间，两个该第一部分11分别位于该第二部分12的两侧。
因此，在安装电池单体10时，只需要将每个电池单体10设置于对应的第二开口24和第三开口中，即可完成电池单体10的定位，安装过程简洁快速。并且，电池单体10的两个端面均位于第一腔体31内，那么端面上设置的泄压机构13以及电路板组件40也位于第一腔体31内，这样，在向第二腔体32内注入粘结剂时，该粘结剂不会对第一腔体31内部的泄压机构13以及电路板组件40造成影响，保证该电池101的安全性。
可选地，该第二开口24和/或该第三开口处设置有围护结构25，该围护结构25垂直于该第一壁23或第二壁且向该支架20的外部延伸，该围护结构25用于支撑该电池单体10。例如，如图2至图4所示，每个第二开口24和每个第三开口均可以设置有维护结构25，该维护结构25与电池单体10的形状一致，为空心圆柱，以使得每个电池单体10可以置于维护结构25内。一方面该维护结构25可以用于支撑电池单体10，保证电池单体10的稳定性，另一方面，由于维护结构25贴合电池单体10的外表面，在向第二腔体32内部注胶时，多余的粘结剂就不会从第二开口24或 者第三开口处流出至第一腔体31内，也就不会影响位于第一腔体31内的泄压机构13，保证泄压机构13正常使用，也不会影响位于第一腔体31内的电极端子13和电路板组件40，保证该电池101的正常安装和使用。为了避免粘结剂通过维护结构25溢出，该维护结构25与电池单体10的表面的间隙通常设置为0至0.6mm。
在本申请实施例中，将电池101包括的多个电池单体10安装于支架20的第二开口24和第三开口中之后，再将电路板组件40固定于电池单体10的端面外侧。具体地，该支架20上可以设置有限位柱26，对应的，该电路板组件40上设置有通孔42，该限位柱26与该通孔42相互配合，以对该电路板组件40进行限位。如图2至图4所示，该支架20的第一壁23上可以设置有凸出于该第一壁23的表面的至少一个限位柱26，例如，可以设置两个限位柱26，对应的，电路板组件40上设置有通孔42，例如，可以设置与限位柱26数量相同的通孔42，通孔42穿过该限位柱26至少一部分，以保证该电路板组件26不会在平行于第一壁23的平面上发生平移。
可选地，该限位柱26的远离该支架20的端部还可以设置有凸台261，该凸台261的径向尺寸小于该限位柱26的其余部分的径向尺寸，该通孔42的尺寸大于该凸台261的径向尺寸且小于该限位柱26的其余部分的径向尺寸，以对该电路板组件40进行限位。如图2至图4所示，该凸台261可以使得该电路板组件40位于该凸台261所在的位置，而不会沿着该限位柱26的轴向有过多的移动，从而固定该电路板组件40的位置，便于将该电路板组件40与电池单体10进行焊接。
在本申请实施例中，第二腔体32内注入粘结剂，为了使得该粘结剂不会过多溢出至第一腔体31，该该支架20上还可以设置有挡胶结构22，该挡胶结构22用于阻止该第二腔体32中的该粘接剂进入该第一腔体31。
可选地，本申请实施例的挡胶结构22可以具有多种实现方式，例如，如图2至图4所示，该挡胶结构22可以为第一限位槽22，对应的，箱体30的内表面设置有与该第一限位槽22对应的结构，以与第一限位槽 22相互配合。
可选地，作为一个实施例，该箱体30的壁的内表面上可以设置有与该第一限位槽22对应的第一限位条35，该第一限位条35卡入该第一限位槽22，以阻止该第二腔体32中的该胶粘剂进入该第一腔体31。图5示出了本申请实施例的下箱体34的一种可能的实现方式，如图5所示，该箱体30的至少一个壁的内表面上设置有第一限位条35，例如，图5中下箱体34的两个侧壁和一个底壁上均设置有第一限位条35，该第一限位条35卡入第一限位槽22中，能够增加粘结剂溢出第二腔体32的路线，从而阻止粘结剂从第二腔体32溢出至第一腔体31中，避免粘结剂溢出至泄压机构13的表面而导致的泄压机构13失效。
可选地，作为另一个实施例，为了加强防溢胶效果，该箱体30的壁的内表面上还可以设置有与该第一限位条35对应的第二限位条36，该第一限位条35与该第二限位条36形成第二限位槽，该第一限位槽的一个侧壁221卡入该第二限位槽，以阻止该第二腔体32中的该胶粘剂进入该第一腔体31。图6示出了本申请实施例的下箱体34的另一种可能的实现方式，图7为图6所示的下箱体34容纳有支架20的情况的侧视图，图8为图7所示的容纳有支架20的下箱体34的截面示意图，该截面为图7所示的A-A’方向的截面。如图6至图8所示，下箱体34的至少一个壁的内表面上设置有第一限位条35和第二限位条36，该第一限位条35和第二限位条36相互平行以形成第二限位槽，例如，图中下箱体34的两个侧壁和一个底壁上均设置有该第二限位槽，支架20上的第一限位槽具有两个侧壁，其中一个侧壁221卡入该第二限位槽中，以阻止该第二腔体32中的该胶粘剂进入该第一腔体31。这样，能够进一步增加粘结剂溢出的路线，减少粘结剂溢出的风险，避免粘结剂溢出并遮挡泄压机构13的表面而导致的泄压机构13失效。
应理解，对于如图5至图8所示的下箱体34，当其多个壁上设置有第一挡胶条35和/或多个壁上设置有第二挡胶条36时，多个壁上的第一挡胶条35可以为相互连接的一体结构，例如如图5所示；或者，多个壁上的第一挡胶条35也可以为相互不连接、具有间隙的多个条状结构，例 如，如图6所示，多个第一挡胶条35之间的间隙可以用于避让支架20上的结构，或者也可以用于避让该箱体30内的其他部件；类似的，多个壁上的第二挡胶条36也可以为相互连接的一体结构或者相互分离的多个结构，本申请实施例并不限于此。
可选地，本申请实施例的箱体30的底壁的内表面上还可以设置有仿形结构38，该仿形结构38可以位于下箱体34的底壁上且位于该第二腔体32内，该仿形结构38的朝向该第二部分12的表面贴合该第二部分12，该仿形结构38用于填补该第二部分12与该箱体30的底壁之间的空间。具体地，图9示出了本申请实施例的下箱体34的再一种可能的实现方式，如图9所示，下箱体34的底壁上设置有仿形结构38，该仿形结构38能够贴合电池单体10的表面，例如，对于圆柱形电池单体10，该仿形结构38的朝向电池单体10的表面为圆弧状，该仿形结构38能够填补电池单体10的第二部分至下箱体34的底壁之间的空间，这样，在该第二腔体32内注入粘结剂时，该仿形结构38占用了第二腔体32内的一部分空间，节省了粘结剂需要填充的空间，减少了粘结剂的用量，既能够减少成本，也可以避免粘结剂用量过多导致粘结剂溢出，提高电池101的安全性。
应理解，本申请实施例的电池单体10、支架20以及箱体30之间可以通过粘结剂固定连接，进一步的，该支架20上还可以设置有第一卡扣27，该箱体30的侧壁上设置有第二卡扣37，该第一卡扣27和该第二卡扣37相互配合，以将该支架20固定于该箱体30内。可选地，该支架20上可以设置有多个第一卡扣27，箱体30上也可以设置有对应的多个第二卡扣37。例如，如图2至图9所示，支架20的一个侧壁上沿第一方向X设置有两个第一卡扣27，该第一方向X可以为支架的长度方向，对应的，箱体30的一个侧壁上设置有两个第二卡扣37，以使得该支架20不会在该箱体30内沿第二方向Z移动，该第二方向Z为支架20的高度方向。
在装配电池101时，可以先将多个电池单体10与支架20相固定，例如，可以通过第二开口24和/或第三开口固定电池单体10，再将电路板组件40与电池单体10固定，例如可以通过限位柱26和通孔42相互配 合，以定位该电路板组件40，在通过焊接等方式将电路板组件40与电池单体10进行固定，从而实现多个电池单体10与支架20之间的装配过程。最后，将固定为一体结构的电池单体10和支架20固定在箱体30内，例如，可以先固定在下箱体34内，具体地，可以通过支架20上的第一限位槽22，沿着箱体30内的第一限位条35，将支架20滑入下箱体34内，再通过支架20上的第一卡扣27和箱体30上的第二卡扣37的配合，使得支架20与箱体30之间相对稳定。之后，通过支架20上的第一开口21，向第二腔体32内注入粘结剂，以实现电池单体10、支架20和箱体30之间的固定连接。
上文描述了本申请实施例的电池101和用电设备100，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10示出了本申请一个实施例的制备电池的方法500的示意性流程图。如图10所示，该方法500可以包括：S510，提供电池单体10；S520，提供支架20，该支架20用于支撑该电池单体10；以及，S530，提供箱体30，该箱体30用于容纳该支架20和该电池单体10；其中，该支架20将该箱体30分隔为第一腔体31和第二腔体32，该第一腔体31用于容纳该电池单体10的第一部分11，该第一部分11设置有泄压机构13，该第二腔体32用于容纳该电池单体10的第二部分12和粘接剂，在该第二腔体32内，该第二部分12、该支架20和该箱体30通过该粘接剂固定连接，其中，该泄压机构13用于在该电池单体10的内部压力达到阈值时致动以泄放该内部压力。
图11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11所示，该设备600可以包括：第一提供模,610，用于提供电池单体10；第二提供模块620，用于提供支架20，该支架20用于支撑该电池单体10；以及，第三提供模块630，用于提供箱体30，该箱体30用于容纳该支架20和该电池单体10；其中，该支架20将该箱体30分隔为第一腔体31和第二腔体32，该第一腔体31用于容纳该电池单体10的第一部分11，该第一部分11设置有泄压机构13，该第二腔体32用于容纳 该电池单体10的第二部分12和粘接剂，在该第二腔体32内，该第二部分12、该支架20和该箱体30通过该粘接剂固定连接，其中，该泄压机构13用于在该电池单体10的内部压力达到阈值时致动以泄放该内部压力。
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 (18)

  1. 一种电池，其特征在于，包括：
    电池单体(10)；
    支架(20)，所述支架(20)用于支撑所述电池单体(10)；以及，
    箱体(30)，所述箱体(30)用于容纳所述支架(20)和所述电池单体(10)；
    其中，所述支架(20)将所述箱体(30)分隔为第一腔体(31)和第二腔体(32)，所述第一腔体(31)用于容纳所述电池单体(10)的第一部分(11)，所述第一部分(11)设置有泄压机构(13)，所述第二腔体(32)用于容纳所述电池单体(10)的第二部分(12)和粘接剂，在所述第二腔体(32)内，所述第二部分(12)、所述支架(20)和所述箱体(30)通过所述粘接剂固定连接，其中，所述泄压机构(13)用于在所述电池单体(10)的内部压力达到阈值时致动以泄放所述内部压力。
  2. 根据权利要求1所述的电池，其特征在于，所述支架(20)上设置有第一开口(21)，所述第一开口(21)与所述第二腔体(32)连通，所述第一开口(21)用于向所述第二腔体(32)中注入所述粘接剂。
  3. 根据权利要求1或2所述的电池，其特征在于，所述支架(20)上设置有挡胶结构(22)，所述挡胶结构(22)用于阻止所述第二腔体(32)中的所述粘接剂进入所述第一腔体(31)。
  4. 根据权利要求3所述的电池，其特征在于，所述挡胶结构(22)为第一限位槽，所述箱体(30)的壁的内表面上设置有与所述第一限位槽对应的第一限位条(35)，所述第一限位条(35)卡入所述第一限位槽，以阻止所述第二腔体(32)中的所述胶粘剂进入所述第一腔体(31)。
  5. 根据权利要求4所述的电池，其特征在于，所述箱体(30)的壁的 内表面上还设置有与所述第一限位条(35)对应的第二限位条(36)，所述第一限位条(35)与所述第二限位条(36)形成第二限位槽，所述第一限位槽的一个侧壁(221)卡入所述第二限位槽，以阻止所述第二腔体(32)中的所述胶粘剂进入所述第一腔体(31)。
  6. 根据权利要求1至5中任一项所述的电池，其特征在于，所述支架(20)包括第一壁(23)，所述第一壁(23)上设置有第二开口(24)，所述电池单体(10)穿过所述第二开口(24)，所述第一部分(11)和所述第二部分(12)分别位于所述第二开口(24)的两侧。
  7. 根据权利要求6所述的电池，其特征在于，所述电池单体(10)包括两个所述第一部分(11)，所述支架(20)还包括与所述第一壁(23)相对的第二壁，所述第二壁上设置有第三开口，所述电池单体(10)穿过所述第二开口(24)和所述第三开口，所述第二部分(12)位于所述所述第二开口(24)和所述第三开口之间，两个所述第一部分(11)分别位于所述第二部分(12)的两侧。
  8. 根据权利要求7所述的电池，其特征在于，所述第二开口(24)和/或所述第三开口处设置有围护结构(25)，所述围护结构(25)垂直于所述第一壁(23)或第二壁且向所述支架(20)的外部延伸，所述围护结构(25)用于支撑所述电池单体(10)。
  9. 根据权利要求6至8中任一项所述的电池，其特征在于，所述第一壁(23)垂直于所述箱体(30)的底壁。
  10. 根据权利要求1至9中任一项所述的电池，其特征在于，所述第一部分(11)还设置有电极端子(14)，所述电极端子(14)通过汇流部件(41)电连接，所述第一腔体(31)还用于容纳所述汇流部件(41)。
  11. 根据权利要求10所述的电池，其特征在于，所述电池还包括：
    电路板组件(40)，所述汇流部件(41)设置于所述电路板组件 (40)上，所述第一腔体(31)还用于容纳电路板组件(40)；
    所述电路板组件(40)上设置有通孔(42)，所述支架(20)上设置有限位柱(26)，所述限位柱(26)与所述通孔(42)相互配合，以对所述电路板组件(40)进行限位。
  12. 根据权利要求11所述的电池，其特征在于，所述限位柱(26)的远离所述支架(20)的端部设置有凸台(261)，所述凸台(261)的径向尺寸小于所述限位柱(26)的其余部分的径向尺寸，所述通孔(42)的尺寸大于所述凸台(261)的径向尺寸且小于所述限位柱(26)的其余部分的径向尺寸，以对所述电路板组件(40)进行限位。
  13. 根据权利要求1至12中任一项所述的电池，其特征在于，所述支架(20)上设置有第一卡扣(27)，所述箱体(30)的侧壁上设置有第二卡扣(37)，所述第一卡扣(27)和所述第二卡扣(37)相互配合，以将所述支架(20)固定于所述箱体(30)内。
  14. 根据权利要求1至13中任一项所述的电池，其特征在于，所述电池单体(10)为圆柱形电池单体，所述第一部分(11)包括所述圆柱形电池单体的端面，所述泄压机构(13)设置于所述圆柱形电池单体的端面上。
  15. 根据权利要求1至14中任一项所述的电池，其特征在于，所述箱体(30)的底壁的内表面上设置有仿形结构(38)，所述仿形结构(38)位于所述第二腔体(32)内，所述仿形结构(38)的朝向所述第二部分(12)的表面贴合所述第二部分(12)，所述仿形结构(38)用于填补所述第二部分(12)与所述箱体(30)的底壁之间的空间。
  16. 一种用电设备，其特征在于，包括：根据权利要求1至15中任一项所述的电池，所述电池用于提供电能。
  17. 一种制备电池的方法，其特征在于，包括：
    提供电池单体(10)；
    提供支架(20)，所述支架(20)用于支撑所述电池单体(10)；以及，
    提供箱体(30)，所述箱体(30)用于容纳所述支架(20)和所述电池单体(10)；
    其中，所述支架(20)将所述箱体(30)分隔为第一腔体(31)和第二腔体(32)，所述第一腔体(31)用于容纳所述电池单体(10)的第一部分(11)，所述第一部分(11)设置有泄压机构(13)，所述第二腔体(32)用于容纳所述电池单体(10)的第二部分(12)和粘接剂，在所述第二腔体(32)内，所述第二部分(12)、所述支架(20)和所述箱体(30)通过所述粘接剂固定连接，其中，所述泄压机构(13)用于在所述电池单体(10)的内部压力达到阈值时致动以泄放所述内部压力。
  18. 一种制备电池的设备，其特征在于，包括：
    第一提供模块，用于提供电池单体(10)；
    第二提供模块，用于提供支架(20)，所述支架(20)用于支撑所述电池单体(10)；以及，
    第三提供模块，用于提供箱体(30)，
    所述箱体(30)用于容纳所述支架(20)和所述电池单体(10)；
    其中，所述支架(20)将所述箱体(30)分隔为第一腔体(31)和第二腔体(32)，所述第一腔体(31)用于容纳所述电池单体(10)的第一部分(11)，所述第一部分(11)设置有泄压机构(13)，所述第二腔体(32)用于容纳所述电池单体(10)的第二部分(12)和粘接剂，在所述第二腔体(32)内，所述第二部分(12)、所述支架(20)和所述箱体(30)通过所述粘接剂固定连接，其中，所述泄压机构(13)用于在所述电池单体(10)的内部压力达到阈值时致动以泄放所述内部压力。
PCT/CN2021/124014 2021-10-15 2021-10-15 电池、用电设备、制备电池的方法和设备 WO2023060537A1 (zh)

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