WO2023050887A1 - 电池单体、电池、用电设备、电池单体的制造方法及设备 - Google Patents

电池单体、电池、用电设备、电池单体的制造方法及设备 Download PDF

Info

Publication number
WO2023050887A1
WO2023050887A1 PCT/CN2022/098443 CN2022098443W WO2023050887A1 WO 2023050887 A1 WO2023050887 A1 WO 2023050887A1 CN 2022098443 W CN2022098443 W CN 2022098443W WO 2023050887 A1 WO2023050887 A1 WO 2023050887A1
Authority
WO
WIPO (PCT)
Prior art keywords
lubricating
electrode assembly
peripheral surface
battery cell
casing
Prior art date
Application number
PCT/CN2022/098443
Other languages
English (en)
French (fr)
Inventor
吴译晨
Original Assignee
宁德时代新能源科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 宁德时代新能源科技股份有限公司 filed Critical 宁德时代新能源科技股份有限公司
Publication of WO2023050887A1 publication Critical patent/WO2023050887A1/zh

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • 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
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/46—Separators, membranes or diaphragms characterised by their combination with electrodes
    • 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 field of battery technology, in particular, to a battery cell, a battery, an electrical device, and a method and device for manufacturing the battery cell.
  • Batteries are widely used in the field of new energy, such as electric vehicles, new energy vehicles, etc. New energy vehicles and electric vehicles have become a new trend in the development of the automotive industry.
  • the battery includes an electrode assembly and a casing. During the production process, the electrode assembly needs to be loaded into the casing, that is, the casing operation. However, the electrode assembly is prone to damage or destruction during shell entry operation.
  • the purpose of the embodiments of the present application is to provide a battery cell, battery, electrical equipment, battery cell manufacturing method and equipment, which aims to improve the electrode assembly that is prone to damage or destruction during the operation of entering the shell in the related art The problem.
  • an embodiment of the present application provides a battery cell, including an electrode assembly, a case, and a lubricant.
  • the case is used to house the electrode assembly.
  • the lubricant is arranged between the outer peripheral surface of the electrode assembly and the inner peripheral surface of the casing, and the lubricant is connected to the electrode assembly or the casing.
  • the battery cell is provided with a lubricating piece between the outer peripheral surface of the electrode assembly and the inner peripheral surface of the casing, the lubricating piece is connected to the electrode assembly or the casing, and the lubricating piece can reduce the The friction between the electrode assembly and the casing is small, which reduces the probability of the electrode assembly being scratched or damaged by the casing, and protects the electrode assembly.
  • the lubricating member extends along the entire circumference of the outer peripheral surface of the electrode assembly.
  • the lubricant covers the entire circumference of the electrode assembly, reducing the friction between the electrode assembly and the housing during the operation of entering the case, and reducing the scratching of the electrode by the case during the operation of entering the case component probabilities.
  • the battery cell includes an insulator covering the outside of the electrode assembly, and the insulator is configured to separate the electrode assembly and the casing.
  • the lubricating element is connected to the insulating element, and/or the lubricating element is connected to the inner peripheral surface of the housing.
  • the friction force between the casing and the insulating part can be reduced, and the friction force between the insulating part and the casing is prevented from being too large during the operation of inserting the casing, causing the casing to scratch the insulating part.
  • the frictional force between the electrode assembly and the casing is reduced, and the probability of damage to the electrode assembly during casing operation is reduced.
  • the lubricating member is connected to the outer peripheral surface of the insulating member and/or the inner peripheral surface of the insulating member.
  • the lubricating part can reduce the friction between the insulating part and the shell during the operation of entering the shell, and avoid excessive friction between the insulating part and the shell, which will cause insulation parts are damaged. That is to say, the lubricating part can play a role in protecting the insulating part, reducing the probability of the insulating part being damaged during the shelling operation.
  • the lubricating part When the lubricating part is connected to the inner peripheral surface of the insulator and the casing is inserted, if the insulating part is damaged under the action of the casing, the lubricating part will contact the casing to reduce the friction between the electrode assembly and the casing , to reduce the probability of damage to the electrode assembly during operation in the shell. In this way, although the insulator is damaged, the electrode assembly is not affected, and the performance of the battery cell is not affected.
  • the lubricating member includes a multi-layer lubricating layer, and the lubricating layer includes lubricating fillers and binders.
  • the weight ratio of the lubricating filler to the binder in the layer is greater than the weight ratio of the lubricating filler to the binder in the lubricating layer away from the inner peripheral surface of the housing.
  • the lubricating part When the lubricating part is connected to the insulator, by setting multiple lubricating layers, and making the ratio of the weight of the lubricating filler to the binder in the lubricating layer close to the inner peripheral surface of the housing be greater than that of the lubricating layer far away from the inner peripheral surface of the housing
  • the ratio of the weight of the lubricating filler to the binder makes the lubricating effect of the lubricating layer close to the inner peripheral surface of the shell better, which is conducive to reducing the friction between the electrode assembly and the shell, and away from the lubrication of the inner peripheral surface of the shell.
  • the bonding effect of the layer is better, which is conducive to bonding the lubricating layer to the insulating part, preventing the lubricating layer from separating from the insulating part, so as to better protect the electrode assembly.
  • the lubricating part is connected to the inner peripheral surface of the housing, the lubricating part includes a multi-layer lubricating layer, and the lubricating layer includes lubricating fillers and adhesives, and the adjacent two layers of lubricating layers Among them, the weight ratio of the lubricating filler to the binder in the lubricating layer close to the inner peripheral surface of the housing is smaller than the weight ratio of the lubricating filler to the binder in the lubricating layer far from the inner peripheral surface of the housing.
  • the lubricating part When the lubricating part is connected to the inner peripheral surface of the shell, by setting multiple layers of lubricating layers, and making the ratio of the weight of the lubricating filler to the binder in the lubricating layer close to the inner peripheral surface of the shell smaller than that far away from the inner peripheral surface of the shell
  • the ratio of the weight of the lubricating filler in the lubricating layer on the surface to the binder makes the bonding effect of the lubricating layer close to the inner peripheral surface of the shell better, which is conducive to bonding the lubricating layer to the shell and preventing the lubricating layer from being bonded to the shell.
  • the lubricating effect of the lubricating layer away from the inner peripheral surface of the casing is better, which is beneficial to reduce the friction between the electrode assembly and the casing, so as to better protect the electrode assembly.
  • the weight ratio of the lubricating filler to the binder is between 1:9 and 9:1. In this way, the lubricating layer not only has a good bonding effect, but also has a good lubricating effect.
  • the lubricating member is connected to the inner peripheral surface of the casing or the outer peripheral surface of the electrode assembly.
  • the lubricating part plays a lubricating role during the operation of entering the casing, reducing the friction between the casing and the electrode assembly, and avoiding the friction between the casing and the electrode assembly If it is too large, it will damage the electrode assembly.
  • the lubricating piece can also play a lubricating role during the operation of entering the shell, reducing the friction between the shell and the electrode assembly, and reducing the possibility of damage or destruction of the electrode assembly. possible.
  • the embodiment of the present application provides a battery, the battery includes the battery cell in any one of the above and a box body, the box body is used to accommodate the battery cell.
  • an embodiment of the present application provides an electric device, the electric device includes the above-mentioned battery, and the battery is used to provide electric energy.
  • an embodiment of the present application provides a method for manufacturing a battery cell, which is used to manufacture any one of the above-mentioned battery cells.
  • the method for manufacturing a battery cell includes: providing an electrode assembly; providing a casing; providing a lubricating member ; connecting the lubricating element to the electrode assembly or the casing; putting the electrode assembly into the casing; wherein, the lubricating element is located between the outer peripheral surface of the electrode assembly and the inner peripheral surface of the casing.
  • the embodiment of the present application provides a battery cell manufacturing equipment for manufacturing any one of the above battery cells
  • the battery cell manufacturing equipment includes a first providing device, a second providing device, a third Supplied with device and assembled device.
  • the first providing device is used to provide the electrode assembly;
  • the second providing device is used to provide the housing;
  • the third providing device is used to provide the lubricant;
  • the assembly device is used to connect the lubricant to the electrode assembly or the housing, and to assemble the electrode assembly into the housing.
  • the lubricating member is located between the outer peripheral surface of the electrode assembly and the inner peripheral surface of the casing.
  • FIG. 1 is a schematic structural view of a vehicle in some embodiments of the present application.
  • Fig. 2 is a schematic diagram of an exploded structure of a battery in some embodiments of the present application.
  • FIG. 3 is a schematic diagram of the overall structure of a battery cell in some embodiments of the present application.
  • Fig. 4 is a schematic diagram of the electrode assembly in some embodiments of the present application when it is put into the shell;
  • FIG. 5 is a schematic structural view of a battery cell in some embodiments of the present application at a first viewing angle
  • Fig. 6 is a sectional view of the VI-VI position in Fig. 5;
  • Figure 7 is an enlarged view of the position of VII in Figure 6;
  • FIG. 8 is a schematic structural view of battery cells in other embodiments of the present application at a first viewing angle
  • Fig. 9 is a sectional view of position IX-IX in Fig. 8.
  • Figure 10 is an enlarged view of the X position in Figure 9;
  • FIG. 11 is a schematic structural view of battery cells in still some embodiments of the present application at a first viewing angle
  • Fig. 12 is a sectional view of position XII-XII in Fig. 11;
  • Figure 13 is an enlarged view of the XIII position in Figure 12;
  • Fig. 14 is a schematic diagram of a manufacturing method of a battery cell according to some embodiments of the present application.
  • FIG. 15 is a schematic diagram of manufacturing equipment for battery cells according to some embodiments of the present application.
  • Icons 10-box; 11-first part; 12-second part; 20-battery unit; 21-end cover; 21a-electrode terminal; 21b-pressure relief mechanism; 22-housing; 23-electrode assembly; 24-lubricating part; 25-insulating part; 100-battery; 200-controller; 300-motor; 410-first providing device; 420-second providing device; 430-third providing device; -vehicle.
  • multiple refers to more than two (including two), similarly, “multiple groups” refers to more than two groups (including two), and “multiple pieces” refers to More than two pieces (including two pieces).
  • Batteries are not only used in energy storage power systems such as hydropower, firepower, wind power and solar power plants, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric vehicles, as well as military equipment and aerospace and other fields. With the continuous expansion of battery application fields, its market demand is also constantly expanding.
  • the battery includes an electrode assembly and a casing.
  • the electrode assembly needs to be loaded into the casing, that is, the casing operation.
  • the electrode assembly is prone to damage or destruction during shell entry operation.
  • the electrode assembly or the shell needs to be pushed to make the electrode assembly fit into the shell. During this process, there is a large friction force between the electrode assembly and the shell, and the shell The body is easy to scratch the electrode assembly, which will lead to damage or destruction of the electrode assembly.
  • a lubricating piece can be provided between the electrode assembly and the casing, so that the lubricating piece is connected to the electrode assembly or the casing .
  • the lubricating member can play a lubricating role during the casing-in operation, reducing the frictional force between the electrode assembly and the casing, thereby reducing the probability of damage to the electrode assembly.
  • the applicant has designed a battery cell after in-depth research, and the battery cell includes an electrode assembly, a casing, and a lubricant.
  • the case is used to house the electrode assembly.
  • the lubricant is arranged between the outer peripheral surface of the electrode assembly and the inner peripheral surface of the casing, and the lubricant is connected to the electrode assembly or the casing.
  • the battery cell is provided with a lubricating piece between the outer peripheral surface of the electrode assembly and the inner peripheral surface of the casing, and the lubricating piece is connected to the electrode assembly or the casing.
  • the friction between the electrode assembly and the casing is small, which reduces the probability of the electrode assembly being scratched or damaged by the casing, and protects the electrode assembly.
  • the battery cells disclosed in the embodiments of the present application can be used, but not limited to, in electric devices such as vehicles, ships or aircrafts.
  • a power supply system comprising the electric device can be composed of the battery cells and batteries disclosed in this application.
  • the embodiment of the present application provides an electric device using a battery as a power source.
  • the electric device can be, but not limited to, a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, and the like.
  • electric toys may include fixed or mobile electric toys, such as game consoles, electric car toys, electric boat toys, electric airplane toys, etc.
  • spacecraft may include airplanes, rockets, space shuttles, spaceships, etc.
  • a vehicle 1000 is used as an example of an electric device in an embodiment of the present application.
  • FIG. 1 is a schematic structural diagram of a vehicle 1000 provided by some embodiments of the present application.
  • the vehicle 1000 can be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle.
  • the interior of the vehicle 1000 is provided with a battery 100 , and the battery 100 may be provided at the bottom, head or tail of the vehicle 1000 .
  • the battery 100 can be used for power supply of the vehicle 1000 , for example, the battery 100 can be used as an operating power source of the vehicle 1000 .
  • the vehicle 1000 may further include a controller 200 and a motor 300 , the controller 200 is used to control the battery 100 to supply power to the motor 300 , for example, for starting, navigating and running the vehicle 1000 .
  • the battery 100 can not only be used as an operating power source for the vehicle 1000 , but can also be used as a driving power source for the vehicle 1000 , replacing or partially replacing fuel oil or natural gas to provide driving power for the vehicle 1000 .
  • FIG. 2 is an exploded view of a battery 100 provided by some embodiments of the present application.
  • the battery 100 includes a case 10 and battery cells 20 housed in the case 10 .
  • the box body 10 is used to provide accommodating space for the battery cells 20 , and the box body 10 may adopt various structures.
  • the box body 10 may include a first part 11 and a second part 12, the first part 11 and the second part 12 cover each other, the first part 11 and the second part 12 jointly define a of accommodation space.
  • the second part 12 can be a hollow structure with one end open, the first part 11 can be a plate-like structure, and the first part 11 covers the opening side of the second part 12, so that the first part 11 and the second part 12 jointly define an accommodation space ;
  • the first part 11 and the second part 12 can also be hollow structures with one side opening, and the opening side of the first part 11 is covered by the opening side of the second part 12 .
  • the box body 10 formed by the first part 11 and the second part 12 can be in various shapes, such as a cylinder, a cuboid and the like.
  • the battery 100 there may be multiple battery cells 20 , and the multiple battery cells 20 may be connected in series, in parallel or in parallel.
  • the mixed connection means that the multiple battery cells 20 are connected in series and in parallel.
  • a plurality of battery cells 20 can be directly connected in series, in parallel or mixed together, and then the whole composed of a plurality of battery cells 20 is housed in the box 10; of course, the battery 100 can also be a plurality of battery cells 20
  • the battery 100 modules are firstly connected in series, parallel or mixed, and then multiple battery 100 modules are connected in series, parallel or mixed to form a whole and accommodated in the box 10 .
  • the battery 100 may also include other structures, for example, the battery 100 may also include a bus component for realizing electrical connection between a plurality of battery cells 20 .
  • each battery cell 20 may be a secondary battery or a primary battery; it may also be a lithium-sulfur battery, a sodium-ion battery or a magnesium-ion battery, but not limited thereto.
  • the battery cell 20 may be in the form of a cylinder, a flat body, a cuboid or other shapes.
  • FIG. 3 is a schematic diagram of the overall structure of a battery cell 20 provided in some embodiments of the present application.
  • the battery cell 20 refers to the smallest unit constituting the battery 100 .
  • the battery cell 20 includes an end cover 21 , a casing 22 , an electrode assembly 23 and other functional components.
  • the end cap 21 refers to a component that covers the opening of the casing 22 to isolate the internal environment of the battery cell 20 from the external environment.
  • the shape of the end cap 21 can be adapted to the shape of the housing 22 to fit the housing 22 .
  • the end cap 21 can be made of a material (such as aluminum alloy) with a certain hardness and strength, so that the end cap 21 is not easy to deform when being squeezed and collided, so that the battery cell 20 can have a higher Structural strength and safety performance can also be improved.
  • Functional components such as electrode terminals 21 a may be provided on the end cap 21 .
  • the electrode terminal 21 a can be used to be electrically connected with the electrode assembly 23 for outputting or inputting electric energy of the battery cell 20 .
  • the end cover 21 may also be provided with a pressure relief mechanism 21b for releasing the internal pressure when the internal pressure or temperature of the battery cell 20 reaches a threshold value, for example, a pressure relief valve.
  • the material of the end cap 21 can also be various, for example, copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., which is not particularly limited in this embodiment of the present application.
  • the casing 22 is a component used to cooperate with the end cap 21 to form the internal environment of the battery cell 20 , wherein the formed internal environment can be used to accommodate the electrode assembly 23 , electrolyte and other components.
  • the housing 22 and the end cover 21 can be independent components, and an opening can be provided on the housing 22 , and the internal environment of the battery cell 20 can be formed by making the end cover 21 cover the opening at the opening.
  • the end cover 21 and the housing 22 can also be integrated. Specifically, the end cover 21 and the housing 22 can form a common connection surface before other components are inserted into the housing. When the inside of the housing 22 needs to be encapsulated , then make the end cover 21 cover the housing 22.
  • the housing 22 can be in various shapes and sizes, such as cuboid, cylinder, hexagonal prism and so on. Specifically, the shape of the casing 22 can be determined according to the specific shape and size of the electrode assembly 23 .
  • the housing 22 can be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., which is not particularly limited in this embodiment of the present application.
  • the electrode assembly 23 is a part where the electrochemical reaction occurs in the battery cell 20 .
  • One or more electrode assemblies 23 may be contained within the case 22 .
  • the electrode assembly 23 is mainly formed by winding or stacking positive electrode sheets and negative electrode sheets, and a separator is usually provided between the positive electrode sheets and the negative electrode sheets.
  • the parts of the positive electrode sheet and the negative electrode sheet with the active material constitute the main body of the electrode assembly 23 , and the parts of the positive electrode sheet and the negative electrode sheet without the active material respectively constitute the tabs 23 a.
  • the positive pole tab and the negative pole tab can be located at one end of the main body together or at two ends of the main body respectively.
  • FIG. 4 is a schematic diagram of the electrode assembly 23 in some embodiments of the present application when it is put into the casing.
  • FIG. 5 is a schematic structural diagram of a battery cell 20 in a first viewing angle according to some embodiments of the present application.
  • Fig. 6 is a cross-sectional view at the VI-VI position in Fig. 5 .
  • Fig. 7 is an enlarged view of position VII in Fig. 6 .
  • the present application provides a battery cell 20 , which includes a casing 22 , an electrode assembly 23 and a lubricant 24 .
  • the case 22 is used to house the electrode assembly 23 .
  • the lubricant 24 is disposed between the outer peripheral surface of the electrode assembly 23 and the inner peripheral surface of the casing 22 , and the lubricant 24 is connected to the electrode assembly 23 or the casing 22 .
  • the outer peripheral surface of the electrode assembly 23 refers to the outer side of the wall surface parallel to the height direction of the electrode assembly 23 .
  • the inner peripheral surface of the casing 22 means the inner side of the wall surface parallel to the height direction in the casing 22 .
  • the outer peripheral surface of the electrode assembly 23 tends to rub against the inner peripheral surface of the casing 22.
  • the friction force between the outer peripheral surface of the electrode assembly 23 and the inner peripheral surface of the casing 22 is large, the casing The inner peripheral surface of the body 22 is easy to scratch the outer peripheral surface of the electrode assembly 23 , causing damage or damage to the electrode assembly 23 .
  • Lubricant 24 is a lubricating structure or part with a smooth surface. Lubricator 24 is arranged between the outer peripheral surface of electrode assembly 23 and the inner peripheral surface of housing 22. The frictional force between the inner peripheral surface of the body 22 or the outer peripheral surface of the electrode assembly 23 is relatively small, that is, the frictional force between the electrode assembly 23 and the casing 22 is reduced during the casing insertion operation.
  • the battery cell 20 is provided with a lubricating member 24 between the outer peripheral surface of the electrode assembly 23 and the inner peripheral surface of the housing 22, the lubricating member 24 is connected to the electrode assembly 23 or the housing 22, and the lubricating member 24
  • the friction force between the electrode assembly 23 and the casing 22 can be reduced, the probability of the electrode assembly 23 being scratched or damaged by the casing 22 can be reduced, and the electrode assembly 23 can be protected.
  • the lubricating member 24 extends along the entire circumference of the outer peripheral surface of the electrode assembly 23 .
  • Extending over the entire circumference means that the lubricating member 24 starts from one surface of the outer peripheral surface of the electrode assembly 23 , covers a plurality of surfaces along the circumferential direction of the electrode assembly 23 , and then returns to the first surface. It can also be understood that the lubricating member 24 forms an end-to-end annular structure, and the inner periphery of the lubricating member 24 is attached to the outer peripheral surface of the electrode assembly 23 . In this way, the lubricating member 24 has covered a larger part of the outer peripheral surface of the electrode assembly 23, and can contact the housing 22 from each surface of the outer peripheral surface of the electrode assembly 23 during the operation of entering the case, thereby reducing the contact between the electrode assembly 23 and the housing. The friction between 22.
  • the lubricating member 24 By extending the lubricating member 24 along the entire circumference of the outer peripheral surface of the electrode assembly 23, the lubricating member 24 covers the entire outer circumference of the electrode assembly 23, thereby reducing the friction between the electrode assembly 23 and the casing 22 during the shelling operation, and reducing the shelling operation. The probability of scratching the electrode assembly 23 by the case 22.
  • the lubricating member 24 covers two oppositely arranged surfaces of the outer peripheral surface of the electrode assembly 23 .
  • the battery cell 20 includes an insulator 25 covering the outside of the electrode assembly 23 , and the insulator 25 is configured to separate the electrode assembly 23 and the casing 22 .
  • the lubricating element 24 is connected to the insulating element 25 , and/or the lubricating element 24 is connected to the inner peripheral surface of the casing 22 .
  • the insulator 25 separates the case 22 from the electrode assembly 23 and prevents the case 22 from being electrically connected to the electrode assembly 23 .
  • the insulating member 25 may be plastic, rubber or the like.
  • the lubricating member 24 can be connected to the insulator 25 or the inner peripheral surface of the shell 22 to reduce the friction between the insulator 25 and the shell 22 .
  • the frictional force between the insulator 25 and the casing 22 is small, and the insulator 25 is not easy to be damaged when the insulator 25 is not damaged, and the electrode assembly 23 wrapped by the insulator 25 is less likely to be damaged. .
  • the lubricating member 24 when the lubricating member 24 is connected to the insulating member 25, if the insulating member 25 is damaged, the lubricating member 24 can still play a lubricating role, reducing the friction between the casing 22 and the electrode assembly 23, thereby protecting the electrode assembly 23 .
  • the friction force between the housing 22 and the insulator 25 can be reduced, so as to avoid excessive friction between the insulator 25 and the housing 22 during the operation of inserting the housing, causing the housing to 22 Scratch the insulation 25.
  • the frictional force between the electrode assembly 23 and the casing 22 is reduced, and the probability of damage to the electrode assembly 23 during the casing operation is reduced.
  • the lubricating element 24 is connected to the outer peripheral surface of the insulating element 25 and/or the inner peripheral surface of the insulating element 25 .
  • the lubricating member 24 is connected to the outer peripheral surface of the insulating member 25 and/or the inner peripheral surface of the insulating member 25" includes that the lubricating member 24 is only connected to the outer peripheral surface of the insulating member 25, and the lubricating member 24 is only connected to the inner peripheral surface of the insulating member 25. And the lubricating member 24 is connected to both the outer peripheral surface of the insulating member 25 and the inner peripheral surface of the insulating member 25 .
  • the lubricating part 24 when the lubricating part 24 is connected to the outer peripheral surface of the insulator 25, the lubricating part 24 can reduce the frictional force between the insulator 25 and the housing 22 during the shell operation, avoiding The frictional force between the insulator 25 and the housing 22 is too large, thus causing the insulator 25 to be damaged. That is to say, the lubricating part 24 can play a role of protecting the insulating part 25, reducing the probability of the insulating part 25 being damaged during the shelling operation.
  • FIG. 8 is a schematic structural view of battery cells in other embodiments of the present application at a first viewing angle.
  • Fig. 9 is a sectional view of position IX-IX in Fig. 8 .
  • Fig. 10 is an enlarged view of the X position in Fig. 9 .
  • the lubricating member 24 When the lubricating member 24 is not only connected to the outer peripheral surface of the insulator 25 but also to the inner peripheral surface of the insulator 25, the lubricating member 24 arranged on the outer peripheral surface of the insulator 25 can lower the insulating member 25 and the shell during the operation of entering the shell.
  • the friction force between the body 22 can avoid the excessive friction force between the insulator 25 and the shell 22, which will cause the insulator 25 to be damaged. That is to say, the lubricating element 24 provided on the outer peripheral surface of the insulating element 25 can protect the insulating element 25 and reduce the probability of the insulating element 25 being damaged during the shelling operation.
  • the lubricating member 24 provided on the inner peripheral surface of the insulator 25 can be in contact with the housing 22 when the insulator 25 is damaged, reducing the friction between the electrode assembly 23 and the housing 22, and reducing the frictional force of the electrode assembly 23 when entering the shell. probability of damage. In this way, although the insulator 25 is damaged, the electrode assembly 23 is not affected, and the performance of the battery cell 20 is not affected.
  • the lubricating member 24 includes a multi-layer lubricating layer, and the lubricating layer includes lubricating fillers and binders. Among the two adjacent lubricating layers, the lubricating layer near the inner peripheral surface of the housing 22 The weight ratio of the lubricating filler to the binder is greater than the weight ratio of the lubricating filler to the binder in the lubricating layer away from the inner peripheral surface of the housing 22 .
  • Lubricating fillers are fillers with lubricating effect, and the lubricating effect can be improved after adding lubricating fillers.
  • Lubricating fillers include but are not limited to materials such as boron nitride, graphite, molybdenum disulfide, niobium diselenide, calcium soap, and sodium soap.
  • Adhesive is a substance or material with bonding effect, and the bonding effect can be improved after adding the adhesive.
  • Binders include but are not limited to polyvinylidene fluoride, polytetrafluoroethylene, styrene-butadiene rubber, polyacrylate and other organic polymer materials.
  • the greater the weight ratio of the lubricating filler to the binder the better the lubricating effect.
  • a multi-layer lubricating layer is provided, and the ratio of the weight of the lubricating filler to the binder in the lubricating layer near the inner peripheral surface of the housing 22 is greater than that of the inner peripheral surface far away from the housing 22.
  • the ratio of the weight of the lubricating filler in the lubricating layer on the surface to the binder makes the lubricating effect of the lubricating layer close to the inner peripheral surface of the housing 22 better, which is conducive to reducing the friction between the electrode assembly 23 and the housing 22,
  • the bonding effect of the lubricating layer away from the inner peripheral surface of the housing 22 is better, which is beneficial to bonding the lubricating layer to the insulator 25 and preventing the lubricating layer from detaching from the insulator 25 to better protect the electrode assembly 23 .
  • each lubricating layer is at least greater than 2 ⁇ m, so as to better exert the properties of each lubricating layer (such as better lubricating effect or better bonding effect).
  • the particle size D99 of the lubricating filler is not greater than 10 ⁇ m, in other words, 99% of all the particles of the lubricating filler have a particle size smaller than 10 ⁇ m. In this way, not only the lubricating effect is better, but also it is beneficial to make the lubricating layer thinner and protect the insulator 25 and the electrode assembly 23 .
  • FIG. 11 is a schematic structural diagram of battery cells in some other embodiments of the present application at a first viewing angle.
  • Fig. 12 is a sectional view of position XII-XII in Fig. 11 .
  • Fig. 13 is an enlarged view of position XIII in Fig. 12 .
  • the lubricating element 24 is connected to the inner peripheral surface of the housing 22, the lubricating element 24 includes a multi-layer lubricating layer, and the lubricating layer includes a lubricating filler and a binder.
  • the weight ratio of the lubricating filler to the binder in the lubricating layer near the inner peripheral surface of the housing 22 is smaller than the weight ratio of the lubricating filler to the binder in the lubricating layer far from the inner peripheral surface of the housing 22 .
  • a multi-layer lubricating layer is provided, and the ratio of the weight of the lubricating filler to the binder in the lubricating layer near the inner peripheral surface of the housing 22 is smaller than that far away from the housing.
  • the weight ratio of the lubricating filler in the lubricating layer on the inner peripheral surface of 22 to the weight of the adhesive makes the bonding effect of the lubricating layer close to the inner peripheral surface of the housing 22 better, which is conducive to bonding the lubricating layer to the housing 22 , to prevent the lubricating layer from detaching from the shell 22, and the lubricating layer away from the inner peripheral surface of the shell 22 has a better lubricating effect, which is conducive to reducing the friction between the electrode assembly 23 and the shell 22, so as to better protect the electrode assembly twenty three.
  • the weight ratio of the lubricating filler to the binder is between 1:9 and 9:1.
  • the lubricating layer By setting the weight ratio of the lubricating filler to the binder between 1:9 and 9:1, the lubricating layer not only has a good bonding effect, but also has a good lubricating effect.
  • the lubricating member 24 is connected to the inner peripheral surface of the casing 22 or the outer peripheral surface of the electrode assembly 23 .
  • the insulating member 25 may or may not be provided between the electrode assembly 23 and the casing 22 .
  • the lubricating member 24 plays an insulating role, and electrically separates the electrode assembly 23 from the housing 22, so as to avoid contact between the electrode assembly 23 and the housing 22, and then cause problems such as short circuits.
  • the lubricating member 24 may be attached to the outer side of the separator of the electrode assembly 23 or the inner peripheral surface of the case 22 .
  • the lubricating member 24 By connecting the lubricating member 24 to the inner peripheral surface of the housing 22, the lubricating member 24 plays a lubricating role during the operation of entering the shell, reducing the friction between the housing 22 and the electrode assembly 23, and avoiding the friction between the housing 22 and the electrode assembly. The friction between the components 23 is too large, and the electrode components 23 are damaged. Similarly, by connecting the lubricating member 24 to the outer peripheral surface of the electrode assembly 23, the lubricating member 24 can also play a lubricating role during the operation of entering the shell, reducing the friction between the casing 22 and the electrode assembly 23, and reducing the electrode friction. Possibility of component 23 damage or destruction.
  • the lubricating member 24 (or the lubricating layer) has relatively high hardness. In addition to lubricating, it can also protect the insulating member 25 or the electrode assembly 23 .
  • the battery cell 20 provided in this application by providing a lubricating member 24 between the electrode assembly 23 and the casing 22, is beneficial to reduce the sliding friction resistance between the electrode assembly 23 and the casing 22, reduce the arching and wrinkling of the insulating member 25, and reduce the electrode Risk of scratching components 23.
  • the embodiment of the present application also provides a method for manufacturing the battery cell 20, which is used to manufacture the above-mentioned battery cell 20.
  • the method for manufacturing the battery cell 20 includes:
  • Step S1 providing an electrode assembly 23;
  • Step S2 providing the casing 22;
  • Step S3 providing lubricating element 24;
  • Step S4 connecting the lubricant 24 to the electrode assembly 23 or the casing 22;
  • Step S5 loading the electrode assembly 23 into the casing 22;
  • the lubricating member 24 is located between the outer peripheral surface of the electrode assembly 23 and the inner peripheral surface of the casing 22 .
  • step S4 including but not limited to, uniformly coating the lubricating layer on the insulator 25 , the electrode assembly 23 and/or the casing 22 by means of spraying, extrusion or slurry transfer.
  • the embodiment of the present application also provides a battery cell 20 manufacturing equipment for manufacturing the above-mentioned battery cell 20, the battery cell 20 manufacturing equipment includes a first providing device 410, a second providing device 420 , a third providing device 430 and an assembling device 440 .
  • the first providing device 410 is used to provide the electrode assembly 23;
  • the second providing device 420 is used to provide the casing 22;
  • the third providing device 430 is used to provide the lubricant 24;
  • the assembly device 440 is used to connect the lubricant 24 to the electrode assembly 23 Or the casing 22, and is used to pack the electrode assembly 23 into the casing 22.
  • the lubricating member 24 is located between the outer peripheral surface of the electrode assembly 23 and the inner peripheral surface of the casing 22 .

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Abstract

本申请提供了一种电池单体、电池、用电设备、电池单体的制造方法及设备，涉及电池领域。电池单体包括电极组件、壳体和润滑件。壳体用于容纳电极组件。润滑件设置于电极组件的外周面与壳体的内周面之间，润滑件连接于电极组件或壳体。电池包括上述的电池单体和箱体，箱体用于容纳电池单体。该电池单体在电极组件的外周面和壳体的内周面之间设置有润滑件，润滑件连接于电极组件或壳体，在入壳操作时，润滑件可以减小电极组件和壳体之间的摩擦力，降低电极组件被壳体刮伤或破坏的概率，对电极组件起到保护作用。该电池的电极组件受到润滑件的保护，损坏概率小，质量高。

Description

电池单体、电池、用电设备、电池单体的制造方法及设备
相关申请的交叉引用
本申请要求享有2021年09月28日提交的名称为“电池单体、电池、用电设备、电池单体的制造方法及设备”的中国专利申请(申请号：2021111467915)的优先权，该申请的全部内容通过引用并入本文中。
技术领域
本申请涉及电池技术领域，具体而言，涉及一种电池单体、电池、用电设备、电池单体的制造方法及设备。
背景技术
电池在新能源领域应用甚广，例如电动汽车、新能源汽车等，新能源汽车、电动汽车已经成为汽车产业的发展新趋势。电池包括电极组件和壳体，在生产过程中需要将电极组件装入壳体内，也即入壳操作。但在进行入壳操作时，其电极组件容易出现损伤或破坏。
发明内容
本申请实施例的目的在于提供一种电池单体、电池、用电设备、电池单体的制造方法及设备，其旨在改善相关技术中在进行入壳操作时，电极组件容易出现损坏或破坏的问题。
第一方面，本申请实施例提供了一种电池单体，包括电极组件、壳体和润滑件。壳体用于容纳电极组件。润滑件设置于电极组件的外周面与壳体的内周面之间，润滑件连接于电极组件或壳体。
在上述技术方案中，该电池单体在电极组件的外周面和壳体的内周面之间设置有润滑件，润滑件连接于电极组件或壳体，在入壳操作时，润滑件可以减小电极组件和壳体之间的摩擦力，降低电极组件被壳体刮伤或破坏的概率，对电极组件起到保护作用。
作为本申请实施例的一种可选技术方案，润滑件沿电极组件的外周面的周向整周延伸。通过将润滑件沿电极组件的外周面整周延伸，使得润滑件覆盖电极组件的整个外周，降低入壳操作时电极组件与壳体之间的摩擦力，降低入壳操作时壳体刮伤电极组件的概率。
作为本申请实施例的一种可选技术方案，电池单体包括绝缘件，绝缘件包覆于电极组件的外侧，绝缘件被配置为分隔电极组件和壳体。润滑件连接于绝缘件，和/或润滑件连接于壳体的内周面。润滑件连接于壳体的内周面时，可以降低壳体与绝缘件之间的摩擦力，避免入壳操作时绝缘件与壳体的摩擦力过大，导致壳体刮伤绝缘件。通过将润滑件连接于绝缘件，降低电极组件与壳体的摩擦力，降低入壳操作时电极组件损坏的概率。
作为本申请实施例的一种可选技术方案，润滑件连接于绝缘件的外周面和/或绝缘件的内周面。当润滑件连接于绝缘件的外周面时，润滑件可以在进行入壳操作时降低绝缘件与壳体之间的摩擦力，避免绝缘件与壳体之间的摩擦力过大，从而导致绝缘件损坏。也即润滑件可以起到保护绝缘件的作用，降低在入壳操作时绝缘件破损的概率。当润滑件连接于绝缘件的内周面，进行入壳操作时，若绝缘件在壳体的作用下破损，则润滑件会与壳体相接触，降低电极组件与壳体之间的摩擦力，降低电极组件在入壳操作时损坏的概率。这样，虽然绝缘件出现破损，但电极组件未受到影响，电池单体的性能不会受到影响。
作为本申请实施例的一种可选技术方案，润滑件包括多层润滑层，润滑层包括润滑填料和粘结剂，在相邻的两层润滑层中，靠近壳体的内周面的润滑层中的润滑填料与粘结剂的重量的比值大于远离壳体的内周面的润滑层中的润滑填料与粘结剂的重量的比值。润滑件连接于绝缘件时，通过设置多层润滑层，并使靠近壳体的内周面的润滑层中的润滑填料与粘结剂的重量的比值大于远离壳体的内周面的润滑层中的润滑填料与粘结剂的重量的比值，使得靠近壳体内周面的润滑层 的润滑效果更好，有利于降低电极组件与壳体之间的摩擦力，而远离壳体内周面的润滑层的粘结效果更好，有利于将润滑层粘结于绝缘件，防止润滑层与绝缘件脱离，以更好地保护电极组件。
作为本申请实施例的一种可选技术方案，润滑件连接于壳体的内周面，润滑件包括多层润滑层，润滑层包括润滑填料和粘结剂，在相邻的两层润滑层中，靠近壳体的内周面的润滑层中的润滑填料与粘结剂的重量的比值小于远离壳体的内周面的润滑层中的润滑填料与粘结剂的重量的比值。润滑件连接于壳体的内周面时，通过设置多层润滑层，并使靠近壳体的内周面的润滑层中的润滑填料与粘结剂的重量的比值小于远离壳体的内周面的润滑层中的润滑填料与粘结剂的重量的比值，使得靠近壳体内周面的润滑层的粘结效果更好，有利于将润滑层粘结于壳体，防止润滑层与壳体脱离，而远离壳体内周面的润滑层的润滑效果更好，有利于降低电极组件与壳体之间的摩擦力，以更好地保护电极组件。
作为本申请实施例的一种可选技术方案，润滑填料和粘结剂的重量的比值在1：9和9：1之间。这样，润滑层既具有较好的粘结作用，又具有较好的润滑作用。
作为本申请实施例的一种可选技术方案，润滑件连接于壳体的内周面或电极组件的外周面。通过将润滑件连接于壳体的内周面，在进行入壳操作时，润滑件起到润滑作用，降低壳体与电极组件之间的摩擦力，避免壳体与电极组件之间的摩擦力过大，进而损坏电极组件。同样地，通过将润滑件连接于电极组件的外周面，在进行入壳操作时，润滑件也能够起到润滑作用，降低壳体与电极组件之间的摩擦力，降低电极组件损坏或破坏的可能。
第二方面，本申请实施例提供了一种电池，该电池包括上述任一项中的电池单体和箱体，箱体用于容纳电池单体。
第三方面，本申请实施例提供了一种用电设备，该用电设备包括上述的电池，电池用于提供电能。
第四方面，本申请实施例提供了一种电池单体的制造方法，用于制造上述任一项的电池单体，电池单体的制造方法包括：提供电极组件；提供壳体；提供润滑件；将润滑件连接于电极组件或壳体；将电极组件装入壳体内；其中，润滑件位于电极组件的外周面与壳体的内周面之间。
第五方面，本申请实施例提供了一种电池单体的制造设备，用于制造上述任一项的电池单体，电池单体的制造设备包括第一提供装置、第二提供装置、第三提供装置和组装装置。第一提供装置用于提供电极组件；第二提供装置用于提供壳体；第三提供装置用于提供润滑件；组装装置用于将润滑件连接于电极组件或壳体，并用于将电极组件装入壳体内。其中，润滑件位于电极组件的外周面与壳体的内周面之间。
附图说明
为了更清楚地说明本申请实施例的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，应当理解，以下附图仅示出了本申请的某些实施例，因此不应被看作是对范围的限定，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他相关的附图。
图1为本申请一些实施例的车辆的结构示意图；
图2位本申请一些实施例的电池的分解结构示意图；
图3为本申请一些实施例的电池单体的整体结构示意图；
图4为本申请一些实施例的电极组件进行入壳操作时的示意图；
图5为本申请一些实施例的电池单体在第一视角下的结构示意图；
图6为图5中Ⅵ-Ⅵ位置的剖视图；
图7为图6中Ⅶ位置的放大图；
图8为本申请另一些实施例的电池单体在第一视角下的结构示意图；
图9为图8中Ⅸ-Ⅸ位置的剖视图；
图10为图9中Ⅹ位置的放大图；
图11为本申请又一些实施例的电池单体在第一视角下的结构示意图；
图12为图11中Ⅻ-Ⅻ位置的剖视图；
图13为图12中XIII位置的放大图；
图14为本申请一些实施例的电池单体的制造方法的示意图；
图15为本申请一些实施例的电池单体的制造设备的示意图。
图标：10-箱体；11-第一部分；12-第二部分；20-电池单体；21-端盖；21a-电极端子；21b-泄压机构；22-壳体；23-电极组件；24-润滑件；25-绝缘件；100-电池；200-控制器；300-马达；410-第一提供装置；420-第二提供装置；430-第三提供装置；440-组装装置；1000-车辆。
具体实施方式
下面将结合附图对本申请技术方案的实施例进行详细的描述。以下实施例仅用于更加清楚地说明本申请的技术方案，因此只作为示例，而不能以此来限制本申请的保护范围。
除非另有定义，本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同；本文中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本申请；本申请的说明书和权利要求书及上述附图说明中的术语“包括”和“具有”以及它们的任何变形，意图在于覆盖不排他的包含。
在本申请实施例的描述中，技术术语“第一”“第二”等仅用于区别不同对象，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量、特定顺序或主次关系。在本申请实施例的描述中，“多个”的含义是两个以上，除非另有明确具体的限定。
在本文中提及“实施例”意味着，结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其它实施例互斥的独立的或备选的实施例。本领域技术人员显式地和隐式地理解的是，本文所描述的实施例可以与其它实施例相结合。
在本申请实施例的描述中，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，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
在本申请实施例的描述中，术语“多个”指的是两个以上(包括两个)，同理，“多组”指的是两组以上(包括两组)，“多片”指的是两片以上(包括两片)。
在本申请实施例的描述中，技术术语“中心”“纵向”“横向”“长度”“宽度”“厚度”“上”“下”“前”“后”“左”“右”“竖直”“水平”“顶”“底”“内”“外”“顺时针”“逆时针”“轴向”“径向”“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请实施例和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请实施例的限制。
在本申请实施例的描述中，除非另有明确的规定和限定，技术术语“安装”“相连”“连接”“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；也可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请实施例中的具体含义。
目前，从市场形势的发展来看，电池的应用越加广泛。电池不仅被应用于水力、火力、风力和太阳能电站等储能电源系统，而且还被广泛应用于电动自行车、电动摩托车、电动汽车等电动交通工具，以及军事装备和航空航天等多个领域。随着电池应用领域的不断扩大，其市场的 需求量也在不断地扩增。
电池包括电极组件和壳体，在生产过程中需要将电极组件装入壳体内，也即入壳操作。但在进行入壳操作时，其电极组件容易出现损伤或破坏。
经申请人研究发现，在进行入壳操作时，需要顶推电极组件或壳体，使得电极组件装入壳体内，在这个过程中，电极组件与壳体之间存在较大的摩擦力，壳体容易刮伤电极组件，进而导致电极组件出现损伤或破坏。
为了解决进行入壳操作时电极组件与壳体之间的摩擦力较大的问题，申请人研究发现，可以在电极组件与壳体之间设置润滑件，使得润滑件连接于电极组件或壳体。这样，在进行入壳操作时，润滑件可以起到润滑作用，降低电极组件与壳体之间的摩擦力，也就降低了电极组件损坏的概率。
基于以上考虑，申请人经过深入研究设计了一种电池单体，该电池单体包括电极组件、壳体和润滑件。壳体用于容纳电极组件。润滑件设置于电极组件的外周面与壳体的内周面之间，润滑件连接于电极组件或壳体。该电池单体通过在电极组件的外周面和壳体的内周面之间设置有润滑件，润滑件连接于电极组件或壳体，在入壳操作时，润滑件起到润滑作用，可以减小电极组件和壳体之间的摩擦力，降低电极组件被壳体刮伤或破坏的概率，对电极组件起到保护作用。
本申请实施例公开的电池单体可以但不限用于车辆、船舶或飞行器等用电装置中。可以使用具备本申请公开的电池单体、电池等组成该用电装置的电源系统。
本申请实施例提供一种使用电池作为电源的用电设备，用电设备可以为但不限于手机、平板、笔记本电脑、电动玩具、电动工具、电瓶车、电动汽车、轮船、航天器等等。其中，电动玩具可以包括固定式或移动式的电动玩具，例如，游戏机、电动汽车玩具、电动轮船玩具和电动飞机玩具等等，航天器可以包括飞机、火箭、航天飞机和宇宙飞船等等。
以下实施例为了方便说明，以本申请一实施例的一种用电设备为车辆1000为例进行说明。
请参照图1，图1为本申请一些实施例提供的车辆1000的结构示意图。车辆1000可以为燃油汽车、燃气汽车或新能源汽车，新能源汽车可以是纯电动汽车、混合动力汽车或增程式汽车等。车辆1000的内部设置有电池100，电池100可以设置在车辆1000的底部或头部或尾部。电池100可以用于车辆1000的供电，例如，电池100可以作为车辆1000的操作电源。车辆1000还可以包括控制器200和马达300，控制器200用来控制电池100为马达300供电，例如，用于车辆1000的启动、导航和行驶时的工作用电需求。
在本申请一些实施例中，电池100不仅可以作为车辆1000的操作电源，还可以作为车辆1000的驱动电源，代替或部分地代替燃油或天然气为车辆1000提供驱动动力。
请参照图2，图2为本申请一些实施例提供的电池100的爆炸图。电池100包括箱体10和电池单体20，电池单体20容纳于箱体10内。其中，箱体10用于为电池单体20提供容纳空间，箱体10可以采用多种结构。在一些实施例中，箱体10可以包括第一部分11和第二部分12，第一部分11与第二部分12相互盖合，第一部分11和第二部分12共同限定出用于容纳电池单体20的容纳空间。第二部分12可以为一端开口的空心结构，第一部分11可以为板状结构，第一部分11盖合于第二部分12的开口侧，以使第一部分11与第二部分12共同限定出容纳空间；第一部分11和第二部分12也可以是均为一侧开口的空心结构，第一部分11的开口侧盖合于第二部分12的开口侧。当然，第一部分11和第二部分12形成的箱体10可以是多种形状，比如，圆柱体、长方体等。
在电池100中，电池单体20可以是多个，多个电池单体20之间可串联或并联或混联，混联是指多个电池单体20中既有串联又有并联。多个电池单体20之间可直接串联或并联或混联在一起，再将多个电池单体20构成的整体容纳于箱体10内；当然，电池100也可以是多个电池单体20先串联或并联或混联组成电池100模块形式，多个电池100模块再串联或并联或混联形成一个整体，并容纳于箱体10内。电池100还可以包括其他结构，例如，该电池100还可以包括汇 流部件，用于实现多个电池单体20之间的电连接。
其中，每个电池单体20可以为二次电池或一次电池；还可以是锂硫电池、钠离子电池或镁离子电池，但不局限于此。电池单体20可呈圆柱体、扁平体、长方体或其它形状等。
请参照图3，图3为本申请一些实施例提供的电池单体20的整体结构示意图。电池单体20是指组成电池100的最小单元。如图3，电池单体20包括有端盖21、壳体22、电极组件23以及其他的功能性部件。
端盖21是指盖合于壳体22的开口处以将电池单体20的内部环境隔绝于外部环境的部件。不限地，端盖21的形状可以与壳体22的形状相适应以配合壳体22。可选地，端盖21可以由具有一定硬度和强度的材质(如铝合金)制成，这样，端盖21在受挤压碰撞时就不易发生形变，使电池单体20能够具备更高的结构强度，安全性能也可以有所提高。端盖21上可以设置有如电极端子21a等的功能性部件。电极端子21a可以用于与电极组件23电连接，以用于输出或输入电池单体20的电能。在一些实施例中，端盖21上还可以设置有用于在电池单体20的内部压力或温度达到阈值时泄放内部压力的泄压机构21b，例如，泄压阀。端盖21的材质也可以是多种的，比如，铜、铁、铝、不锈钢、铝合金、塑胶等，本申请实施例对此不作特殊限制。
壳体22是用于配合端盖21以形成电池单体20的内部环境的组件，其中，形成的内部环境可以用于容纳电极组件23、电解液以及其他部件。壳体22和端盖21可以是独立的部件，可以于壳体22上设置开口，通过在开口处使端盖21盖合开口以形成电池单体20的内部环境。不限地，也可以使端盖21和壳体22一体化，具体地，端盖21和壳体22可以在其他部件入壳前先形成一个共同的连接面，当需要封装壳体22的内部时，再使端盖21盖合壳体22。壳体22可以是多种形状和多种尺寸的，例如长方体形、圆柱体形、六棱柱形等。具体地，壳体22的形状可以根据电极组件23的具体形状和尺寸大小来确定。壳体22的材质可以是多种，比如，铜、铁、铝、不锈钢、铝合金、塑胶等，本申请实施例对此不作特殊限制。
电极组件23是电池单体20中发生电化学反应的部件。壳体22内可以包含一个或更多个电极组件23。电极组件23主要由正极片和负极片卷绕或层叠放置形成，并且通常在正极片与负极片之间设有隔膜。正极片和负极片具有活性物质的部分构成电极组件23的主体部，正极片和负极片不具有活性物质的部分各自构成极耳23a。正极极耳和负极极耳可以共同位于主体部的一端或是分别位于主体部的两端。在电池100的充放电过程中，正极活性物质和负极活性物质与电解液发生反应，极耳23a连接电极端子21a以形成电流回路。
根据本申请的一些实施例，参照图4，并请进一步参照图5至图7，图4为本申请一些实施例的电极组件23进行入壳操作时的示意图。图5为本申请一些实施例的电池单体20在第一视角下的结构示意图。图6为图5中Ⅵ-Ⅵ位置的剖视图。图7为图6中Ⅶ位置的放大图。本申请提供了一种电池单体20，该电池单体20包括壳体22、电极组件23和润滑件24。壳体22用于容纳电极组件23。润滑件24设置于电极组件23的外周面与壳体22的内周面之间，润滑件24连接于电极组件23或壳体22。
其中，“电极组件23的外周面”是指电极组件23中与高度方向平行的壁面的外侧。“壳体22的内周面”是指壳体22中与高度方向平行的壁面的内侧。在进行入壳操作时，电极组件23的外周面容易与壳体22的内周面产生摩擦，当电极组件23的外周面与壳体22的内周面之间的摩擦力较大时，壳体22的内周面容易刮伤电极组件23的外周面，造成电极组件23损坏或破坏。
润滑件24是具有润滑作用的结构或部件，其表面光滑，润滑件24设置于电极组件23的外周面与壳体22的内周面之间，在进行入壳操作时，润滑件24与壳体22的内周面或与电极组件23的外周面之间的摩擦力较小，也即减小了入壳操作时电极组件23与壳体22之间的摩擦力。
该电池单体20在电极组件23的外周面和壳体22的内周面之间设置有润滑件24，润滑件24连接于电极组件23或壳体22，在入壳操作时，润滑件24可以减小电极组件23和壳体22之间的摩擦力，降低电极组件23被壳体22刮伤或破坏的概率，对电极组件23起到保护作用。
在本申请一些实施例中，润滑件24沿电极组件23的外周面的周向整周延伸。
“整周延伸”是指润滑件24从电极组件23的外周面的一个面起，沿着电极组件23的周向覆盖多个面后，回到第一个面。也可以理解为润滑件24形成首尾相连的环形结构，润滑件24的内周贴合于电极组件23的外周面。这样，润滑件24覆盖了电极组件23的外周面的较大部分，在进行入壳操作时，可以从电极组件23的外周面的各个表面与壳体22接触，减小电极组件23与壳体22之间的摩擦力。
通过将润滑件24沿电极组件23的外周面整周延伸，使得润滑件24覆盖电极组件23的整个外周，降低入壳操作时电极组件23与壳体22之间的摩擦力，降低入壳操作时壳体22刮伤电极组件23的概率。
在本申请另一些实施例中，润滑件24覆盖电极组件23的外周面中的相对布置的两个表面。
在本申请一些实施例中，电池单体20包括绝缘件25，绝缘件25包覆于电极组件23的外侧，绝缘件25被配置为分隔电极组件23和壳体22。润滑件24连接于绝缘件25，和/或润滑件24连接于壳体22的内周面。
绝缘件25是分隔壳体22与电极组件23，阻止壳体22与电极组件23电性连接的部件。通过绝缘件25包覆电极组件23，可以降低短路的风险。示例性的，绝缘件25可以是塑料、橡胶等。
由于绝缘件25包覆于电极组件23，因此可以将润滑件24连接于绝缘件25上或壳体22的内周面上，以降低绝缘件25与壳体22之间的摩擦力。绝缘件25与壳体22之间的摩擦力较小，在入壳操作时，绝缘件25不易损坏，在绝缘件25不损坏的情况下，被绝缘件25包裹的电极组件23更不易出现损坏。
另外，当润滑件24连接于绝缘件25上，若绝缘件25出现破损，润滑件24仍然可以发挥润滑作用，降低壳体22与电极组件23之间的摩擦力，进而对电极组件23进行保护。
润滑件24连接于壳体22的内周面时，可以降低壳体22与绝缘件25之间的摩擦力，避免入壳操作时绝缘件25与壳体22的摩擦力过大，导致壳体22刮伤绝缘件25。通过将润滑件24连接于绝缘件25，降低电极组件23与壳体22的摩擦力，降低入壳操作时电极组件23损坏的概率。
在本申请一些实施例中，润滑件24连接于绝缘件25的外周面和/或绝缘件25的内周面。
“润滑件24连接于绝缘件25的外周面和/或绝缘件25的内周面”包括润滑件24仅连接于绝缘件25的外周面、润滑件24仅连接于绝缘件25的内周面以及润滑件24既连接于绝缘件25的外周面又连接于绝缘件25的内周面。
请参照图5、图6和图7，当润滑件24连接于绝缘件25的外周面时，润滑件24可以在进行入壳操作时降低绝缘件25与壳体22之间的摩擦力，避免绝缘件25与壳体22之间的摩擦力过大，从而导致绝缘件25损坏。也即润滑件24可以起到保护绝缘件25的作用，降低在入壳操作时绝缘件25破损的概率。
请参照图8、图9和图10，图8为本申请另一些实施例的电池单体在第一视角下的结构示意图。图9为图8中Ⅸ-Ⅸ位置的剖视图。图10为图9中Ⅹ位置的放大图。当润滑件24连接于绝缘件25的内周面，进行入壳操作时，若绝缘件25在壳体22的作用下破损，则润滑件24会与壳体22相接触，降低电极组件23与壳体22之间的摩擦力，降低电极组件23在入壳操作时损坏的概率。这样，虽然绝缘件25出现破损，但电极组件23未受到影响，电池单体20的性能不会受到影响。
当润滑件24既连接于绝缘件25的外周面又连接于绝缘件25的内周面时，设于绝缘件25的外周面的润滑件24可以在进行入壳操作时降低绝缘件25与壳体22之间的摩擦力，避免绝缘件25与壳体22之间的摩擦力过大，从而导致绝缘件25损坏。也即设于绝缘件25的外周面的润滑件24可以起到保护绝缘件25的作用，降低在入壳操作时绝缘件25破损的概率。设于绝缘件25的 内周面的润滑件24可以在绝缘件25破损时与壳体22相接触，降低电极组件23与壳体22之间的摩擦力，降低电极组件23在入壳操作时损坏的概率。这样，虽然绝缘件25出现破损，但电极组件23未受到影响，电池单体20的性能不会受到影响。
在本申请一些实施例中，润滑件24包括多层润滑层，润滑层包括润滑填料和粘结剂，在相邻的两层润滑层中，靠近壳体22的内周面的润滑层中的润滑填料与粘结剂的重量的比值大于远离壳体22的内周面的润滑层中的润滑填料与粘结剂的重量的比值。
润滑填料是具有润滑作用的填充物，加入润滑填料后可提高润滑效果。润滑填料包括但不限于氮化硼，石墨、二硫化钼、二硒化铌、钙皂、钠皂等材料。
粘结剂是具有粘结作用的物质或材料，加入粘结剂后可以提高粘结效果。粘结剂包括但不限于聚偏氟乙烯、聚四氟乙烯、丁苯橡胶、聚丙烯酸酯等有机高分子材料。
其中，润滑填料与粘结剂的重量的比值越大，润滑效果越好。润滑填料与粘结剂的重量的比值越小，粘结效果越好。
润滑件24连接于绝缘件25时，通过设置多层润滑层，并使靠近壳体22的内周面的润滑层中的润滑填料与粘结剂的重量的比值大于远离壳体22的内周面的润滑层中的润滑填料与粘结剂的重量的比值，使得靠近壳体22内周面的润滑层的润滑效果更好，有利于降低电极组件23与壳体22之间的摩擦力，而远离壳体22内周面的润滑层的粘结效果更好，有利于将润滑层粘结于绝缘件25，防止润滑层与绝缘件25脱离，以更好地保护电极组件23。
可选地，每层润滑层的厚度至少大于2μm，以更好的发挥每层润滑层的性质(如润滑效果较好或粘结效果较好)。
另外，润滑填料的颗粒尺寸D99不大于10μm，换句话说，润滑填料的全部颗粒中99％的颗粒尺寸均小于10μm。这样不但润滑效果较好，且有利于将润滑层做薄，保护绝缘件25和电极组件23。
请参照图11、图12和图13，图11为本申请又一些实施例的电池单体在第一视角下的结构示意图。图12为图11中Ⅻ-Ⅻ位置的剖视图。图13为图12中XIII位置的放大图。在本申请又一些实施例中，润滑件24连接于壳体22的内周面，润滑件24包括多层润滑层，润滑层包括润滑填料和粘结剂，在相邻的两层润滑层中，靠近壳体22的内周面的润滑层中的润滑填料与粘结剂的重量的比值小于远离壳体22的内周面的润滑层中的润滑填料与粘结剂的重量的比值。
润滑件24连接于壳体22的内周面时，通过设置多层润滑层，并使靠近壳体22的内周面的润滑层中的润滑填料与粘结剂的重量的比值小于远离壳体22的内周面的润滑层中的润滑填料与粘结剂的重量的比值，使得靠近壳体22内周面的润滑层的粘结效果更好，有利于将润滑层粘结于壳体22，防止润滑层与壳体22脱离，而远离壳体22内周面的润滑层的润滑效果更好，有利于降低电极组件23与壳体22之间的摩擦力，以更好地保护电极组件23。
在本申请一些实施例中，润滑填料和粘结剂的重量的比值在1：9和9：1之间。
通过将润滑填料和粘结剂的重量的比值设置在1：9和9：1之间，润滑层既具有较好的粘结作用，又具有较好的润滑作用。
在本申请又一些实施例中，润滑件24连接于壳体22的内周面或电极组件23的外周面。
此时，电极组件23与壳体22之间可以设置绝缘件25也可以不设置绝缘件25。当电极组件23与壳体22之间不设置绝缘件25时，润滑件24起到绝缘作用，将电极组件23与壳体22电性分离，以避免电极组件23与壳体22相接触，进而引起短路等问题。此时，润滑件24可以连接于电极组件23的隔膜的外侧或壳体22的内周面。
通过将润滑件24连接于壳体22的内周面，在进行入壳操作时，润滑件24起到润滑作用，降低壳体22与电极组件23之间的摩擦力，避免壳体22与电极组件23之间的摩擦力过大，进而损坏电极组件23。同样地，通过将润滑件24连接于电极组件23的外周面，在进行入壳操作 时，润滑件24也能够起到润滑作用，降低壳体22与电极组件23之间的摩擦力，降低电极组件23损坏或破坏的可能。
需要说明的是，润滑件24(或润滑层)的硬度较大，除了可以发挥润滑作用外，其本身也能够对绝缘件25或电极组件23起到保护作用。
本申请提供的电池单体20，通过在电极组件23与壳体22之间设置润滑件24，有利于降低电极组件23与壳体22的滑动摩擦阻力，减少绝缘件25拱起褶皱，降低电极组件23被刮伤的风险。
请参照图14，本申请实施例还提供了一种电池单体20的制造方法，用于制造上述的电池单体20，电池单体20的制造方法包括：
步骤S1：提供电极组件23；
步骤S2：提供壳体22；
步骤S3：提供润滑件24；
步骤S4：将润滑件24连接于电极组件23或壳体22；
步骤S5：将电极组件23装入壳体22内；
其中，润滑件24位于电极组件23的外周面与壳体22的内周面之间。
在步骤S4中，包括但不限于，采用喷涂、挤压或浆料转移的方式均匀地将润滑层涂覆在绝缘件25、电极组件23和/或壳体22上。
请参照图15，本申请实施例还提供了一种电池单体20的制造设备，用于制造上述的电池单体20，电池单体20的制造设备包括第一提供装置410、第二提供装置420、第三提供装置430和组装装置440。第一提供装置410用于提供电极组件23；第二提供装置420用于提供壳体22；第三提供装置430用于提供润滑件24；组装装置440用于将润滑件24连接于电极组件23或壳体22，并用于将电极组件23装入壳体22内。其中，润滑件24位于电极组件23的外周面与壳体22的内周面之间。
以上所述仅为本申请的优选实施例而已，并不用于限制本申请，对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (12)

  1. 一种电池单体，其中，包括：
    电极组件；
    壳体，用于容纳所述电极组件，以及
    润滑件，设置于所述电极组件的外周面与所述壳体的内周面之间，所述润滑件连接于所述电极组件或所述壳体。
  2. 根据权利要求1所述电池单体，其中，所述润滑件沿所述电极组件的外周面的周向整周延伸。
  3. 根据权利要求1或2所述电池单体，其中，所述电池单体包括绝缘件，所述绝缘件包覆于所述电极组件的外侧，所述绝缘件被配置为分隔所述电极组件和所述壳体；
    所述润滑件连接于所述绝缘件，和/或所述润滑件连接于所述壳体的内周面。
  4. 根据权利要求3所述电池单体，其中，所述润滑件连接于所述绝缘件的外周面和/或所述绝缘件的内周面。
  5. 根据权利要求4所述电池单体，其中，所述润滑件包括多层润滑层，所述润滑层包括润滑填料和粘结剂，在相邻的两层润滑层中，靠近所述壳体的内周面的润滑层中的润滑填料与粘结剂的重量的比值大于远离所述壳体的内周面的润滑层中的润滑填料与粘结剂重量的比值。
  6. 根据权利要求3所述电池单体，其中，所述润滑件连接于所述壳体的内周面，所述润滑件包括多层润滑层，所述润滑层包括润滑填料和粘结剂，在相邻的两层润滑层中，靠近所述壳体的内周面的润滑层中的润滑填料与粘结剂的重量的比值小于远离所述壳体的内周面的润滑层中的润滑填料与粘结剂的重量的比值。
  7. 根据权利要求5或6所述电池单体，其中，所述润滑填料和所述粘结剂的重量的比值在1：9和9：1之间。
  8. 根据权利要求1-7任一项所述电池单体，其中，所述润滑件连接于所述壳体的内周面或所述电极组件的外周面。
  9. 一种电池，其中，包括：
    根据权利要求1-8任一项所述的电池单体；以及
    箱体，用于容纳所述电池单体。
  10. 一种用电设备，其中，包括根据权利要求9所述的电池，所述电池用于提供电能。
  11. 一种电池单体的制造方法，其中，用于制造根据权利要求1-8任一项所述的电池单体，所述电池单体的制造方法包括：
    提供所述电极组件；
    提供所述壳体；
    提供所述润滑件；
    将所述润滑件连接于所述电极组件或所述壳体；
    将所述电极组件装入所述壳体内；
    所述润滑件位于所述电极组件的外周面与所述壳体的内周面之间。
  12. 一种电池单体的制造设备，其中，用于制造根据权利要求1-8任一项所述的电池单体，所述电池单体的制造设备包括：
    第一提供装置，用于提供所述电极组件；
    第二提供装置，用于提供所述壳体；
    第三提供装置，用于提供所述润滑件；
    组装装置，用于将所述润滑件连接于所述电极组件或所述壳体，并用于将所述电极组件装入所述壳体内；
    所述润滑件位于所述电极组件的外周面与所述壳体的内周面之间。
PCT/CN2022/098443 2021-09-28 2022-06-13 电池单体、电池、用电设备、电池单体的制造方法及设备 WO2023050887A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202111146791.5A CN115882135A (zh) 2021-09-28 2021-09-28 电池单体、电池、用电设备、电池单体的制造方法及设备
CN202111146791.5 2021-09-28

Publications (1)

Publication Number Publication Date
WO2023050887A1 true WO2023050887A1 (zh) 2023-04-06

Family

ID=85755830

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/098443 WO2023050887A1 (zh) 2021-09-28 2022-06-13 电池单体、电池、用电设备、电池单体的制造方法及设备

Country Status (2)

Country Link
CN (1) CN115882135A (zh)
WO (1) WO2023050887A1 (zh)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11273708A (ja) * 1998-03-24 1999-10-08 Sony Corp 巻回電極電池
JP2002260742A (ja) * 2001-02-27 2002-09-13 Toshiba Corp 非水電解質二次電池
JP2014194912A (ja) * 2013-03-29 2014-10-09 Toyota Industries Corp 蓄電装置の製造方法
JP2018037279A (ja) * 2016-08-31 2018-03-08 株式会社豊田自動織機 蓄電装置、及び蓄電装置の製造方法
CN210897439U (zh) * 2020-01-14 2020-06-30 深圳市兴汇网络科技有限公司 一种锂电池电芯及锂电池

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11273708A (ja) * 1998-03-24 1999-10-08 Sony Corp 巻回電極電池
JP2002260742A (ja) * 2001-02-27 2002-09-13 Toshiba Corp 非水電解質二次電池
JP2014194912A (ja) * 2013-03-29 2014-10-09 Toyota Industries Corp 蓄電装置の製造方法
JP2018037279A (ja) * 2016-08-31 2018-03-08 株式会社豊田自動織機 蓄電装置、及び蓄電装置の製造方法
CN210897439U (zh) * 2020-01-14 2020-06-30 深圳市兴汇网络科技有限公司 一种锂电池电芯及锂电池

Also Published As

Publication number Publication date
CN115882135A (zh) 2023-03-31

Similar Documents

Publication Publication Date Title
WO2023065982A1 (zh) 箱体、电池及用电装置
WO2023137950A1 (zh) 卷绕式电极组件、电池单体、电池及用电设备
WO2023045401A1 (zh) 注液孔密封装置、端盖组件、电池单体、电池以及用电设备
WO2023020088A1 (zh) 电池单体、电池及用电设备
WO2023221598A1 (zh) 连接组件、电池单体、电池及用电设备
WO2023050888A1 (zh) 电池和用电装置
CN115275092B (zh) 电极组件、电池单体、电池及用电设备
WO2023098324A1 (zh) 电极组件及动力电池
WO2024016451A1 (zh) 顶盖组件、电池单体、电池及用电设备
WO2023207402A1 (zh) 顶盖组件、电池单体、电池及用电设备
US20230395931A1 (en) End cover assembly, battery cell, battery, and electric apparatus
WO2023020119A1 (zh) 电极组件、电池单体、电池及用电设备
WO2022042744A1 (zh) 电池单体、电池、用电设备和电池单体的制造方法
US20230361356A1 (en) Battery unit, and battery, power consuming device and preparation apparatus associated therewith
WO2023050887A1 (zh) 电池单体、电池、用电设备、电池单体的制造方法及设备
WO2023134480A1 (zh) 电极组件、电池单体、电池及用电设备
WO2023050977A1 (zh) 电池单体、电池及用电装置
WO2023159847A1 (zh) 电池单体、电池及用电装置
WO2023093485A1 (zh) 储能装置的防水组件与储能装置
WO2023115903A1 (zh) 电池及电池模组、电能设备
WO2023134318A1 (zh) 一种连接部件、电池单体、电池及用电装置
WO2023130266A1 (zh) 电池单体、电池、用电装置、制备电池单体的方法和装置
CN115832186A (zh) 电芯组件、电池单体、电池以及用电装置
WO2023050388A1 (zh) 电池单体、电池、用电设备及电池单体的制造方法和设备
WO2024044878A1 (zh) 顶盖组件、电池单体、电池及用电装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22874284

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE