WO2025112403A1 - 电池的穿极耳装置、组装设备和装配方法 - Google Patents
电池的穿极耳装置、组装设备和装配方法 Download PDFInfo
- Publication number
- WO2025112403A1 WO2025112403A1 PCT/CN2024/096835 CN2024096835W WO2025112403A1 WO 2025112403 A1 WO2025112403 A1 WO 2025112403A1 CN 2024096835 W CN2024096835 W CN 2024096835W WO 2025112403 A1 WO2025112403 A1 WO 2025112403A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- guide member
- shell
- pole ear
- ear portion
- assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- 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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
-
- 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
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
-
- 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
- H01M50/531—Electrode connections inside a battery casing
- H01M50/533—Electrode connections inside a battery casing characterised by the shape of the leads or tabs
-
- 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
- H01M50/531—Electrode connections inside a battery casing
- H01M50/536—Electrode connections inside a battery casing characterised by the method of fixing the leads to the electrodes, e.g. by welding
-
- 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, and in particular to a battery lug piercing device, assembly equipment and assembly method.
- a battery is a cup, tank or other container or part of a composite container that contains an electrolyte solution and metal electrodes to generate an electric current. It is a device that can convert chemical energy into electrical energy. With the development of science and technology, batteries with advantages such as easy portability, simple and easy charging and discharging, and long-term stable power supply are widely used in the fields of automobiles, home appliances, aerospace, etc.
- the battery's tabs are metal conductors that lead the positive and negative electrodes out of the shell from the battery cell. Therefore, during the battery assembly process, the battery's tabs need to be led out of the shell to serve as contact points when the battery is charged and discharged. However, during the battery assembly process, when the battery cell is assembled in the shell, the tabs are easily bent inside the shell and cannot extend out of the shell, which makes the battery assembly and preparation process more difficult and the battery preparation yield is low.
- the main technical problem to be solved by the present application is to provide a method so that the pole ear portion can smoothly extend out of the shell, which can effectively reduce the difficulty of battery assembly and effectively improve the battery assembly efficiency.
- the present application provides a battery ear-piercing device, the battery comprising a shell and an electrode assembly; the shell has a receiving cavity, a through hole connecting the receiving cavity and the outside is opened on the shell, the electrode assembly is arranged in the receiving cavity, and the ear-piercing device is used to guide the ear portion of the electrode assembly to extend out of the through hole.
- the ear-piercing device comprises a guide member and a support mechanism, the guide member is used to penetrate the through hole, and the support mechanism is connected to the guide member and is used to fix the first end of the guide member.
- the guide member is used to extend into the receiving cavity and guide the ear portion to extend out of the receiving cavity through the through hole.
- the pole ear part can contact the guide member, and under the premise of not affecting and damaging the shell and the pole ear part, the pole ear part can be guided to smoothly penetrate into the through hole, so that the pole ear part can smoothly extend out of the shell, so that the pole ear part is not easy to block the shell from being inserted into the electrode assembly, and the pole ear part is not easy to collide with the shell to cause damage or fail to smoothly penetrate into the through hole, thereby realizing accurate shell insertion of the electrode assembly, effectively improving the working stability and reliability of the pole ear piercing device, effectively reducing the difficulty of battery assembly, and effectively improving the assembly efficiency and yield rate of the battery.
- the support mechanism is configured to drive the guide member to deflect so that the extension direction of the guide member is arranged at an angle to the preset assembly direction, so as to obliquely guide the pole ear portion to extend out of the accommodating cavity through the through hole.
- the guide member can guide the pole ear portion using a reasonable inclination angle, which makes it easier for the guide member to provide a relatively gentle guidance to the pole ear portion, thereby guiding the pole ear portion to pass through the through hole without causing damage to the pole ear portion, and preventing the pole ear portion from bending or getting stuck and being unable to pass out, thereby effectively improving the working stability and reliability of the pole ear piercing device.
- an extension direction of the guide member is arranged at an angle to an extension direction of the pole lug portion, and the extension direction of the pole lug portion is arranged to be arranged at an angle to a preset assembly direction.
- the guide member by setting the extension direction of the guide member and the extension direction of the pole ear portion at an angle, and setting the extension direction of the pole ear portion to be at an angle with the preset assembly direction, it is beneficial for the guide member to guide the pole ear portion, effectively avoiding the pole ear portion and the shell from colliding and causing bending or damage, effectively reducing the difficulty of battery assembly, and effectively improving the battery assembly efficiency and yield rate.
- the pole ear portion has a first side surface and a second side surface opposite to each other, and the pole ear portion is inclined toward the first side surface relative to a preset assembly direction; the second end of the guide member is inclined toward the first side surface relative to the first end, and contacts the pole ear portion on the first side surface.
- the pole ear portion can be overlapped on the inclined guide surface, so that the guide member can guide the pole ear portion during the process of the electrode assembly entering the shell, effectively reducing the difficulty of battery assembly and effectively improving the battery assembly efficiency and yield rate.
- the guide member is configured to extend obliquely from the side where the second side is located to the first side, and contact the pole ear portion at the side where the first side of the pole ear portion is located.
- the guide member can guide the pole ear more gently, effectively avoiding the pole ear from colliding with the guide member or the shell to cause bending or damage, effectively reducing the difficulty of battery assembly, and effectively improving the battery assembly efficiency and yield rate.
- the support mechanism includes a base, a flip drive motor and a clamping mechanism, wherein the clamping mechanism is disposed on the base, and the flip drive motor
- the motor is arranged on the base and is in driving connection with the clamping mechanism.
- the clamping mechanism clamps the guide piece, and the turning driving motor is used to drive the clamping mechanism to rotate so as to drive the guide piece to deflect.
- a flip drive motor is set to drive the clamping mechanism to rotate, so as to drive the guide member to deflect, thereby realizing the adjustment of the inclination angle of the guide member, and realizing that the guide member is inserted into the through hole at a reasonable inclination angle, thereby guiding the pole ear part more gently, which is beneficial to improving the working reliability of the pole ear piercing device.
- the clamping mechanism includes a rotating seat and a clamping block
- the rotating seat includes a connecting portion, an extension portion, and a limiting portion.
- the connecting portion and the limiting portion are arranged at both ends of the extension portion and extend in the same side direction of the extension portion, and the extension direction of the limiting portion and the connecting portion is perpendicular to the extension direction of the extension portion.
- the connecting portion is rotatably connected to the base, and the clamping block is arranged on the same side of the extension portion and is located between the connecting portion and the limiting portion.
- part of the extension portion, the clamping block and the limiting portion are arranged relative to the top of the shell, and in the extension direction of the limiting portion and the connecting portion, the height of the clamping block is lower than the height of the limiting portion, and the clamping block is used to clamp the guide member.
- the limiting portion is used to provide a limit for the length of the guide member extending into the accommodating cavity, which effectively reduces the possibility of damage to the pole ear portion or the shell due to the excessive length of the guide member extending into the accommodating cavity, which is conducive to improving the working reliability and stability of the pole ear piercing device.
- the guide member is provided in a sheet shape, and a main surface of the guide member is used for overlapping of the pole ear portion.
- a smooth main surface is provided for the pole ear portion for guidance, which is beneficial to improving the guiding efficiency and stability of the guide member on the pole ear portion and is beneficial to reducing the difficulty of battery assembly.
- the support mechanism fixes the first end of the guide member so that the second end of the guide member is suspended.
- the first end of the guide member is fixed by the supporting mechanism, and the second end of the guide member is suspended, so that the suspended second end can be extended into the accommodating cavity while the guide member is fixed, thereby guiding the pole ear part.
- the structure is simple and effective, which is beneficial to improving the guiding efficiency and stability of the guide member for the pole ear part, and is beneficial to reducing the difficulty of battery assembly.
- the process of inserting the housing into the electrode assembly includes a first stage.
- the support mechanism is configured to be able to move relative to the electrode assembly together with the housing, and the guide member is used to contact the pole ear portion in the first stage and allow the pole ear portion to slide on the guide member, so that the pole ear portion overlaps the guide member.
- the supporting mechanism and the shell move together relative to the electrode assembly to enable the guide member to extend into the through hole and contact the pole ear portion, so that the pole ear portion is overlapped on the guide member and slides along the guide member to guide the pole ear portion to a position convenient for extending out of the through hole, thereby achieving smooth and fluent guiding of the pole ear portion, effectively improving the guiding efficiency of the pole ear piercing device and the assembly efficiency of the battery.
- the process of inserting the housing into the electrode assembly includes a second stage after the first stage.
- the support mechanism is configured to be able to move relative to the housing in a direction away from each other, so that the guide member and the housing are away from each other.
- the guide member is configured to keep in contact with the pole ear portion and relatively stationary, thereby guiding the pole ear portion to extend out of the accommodating cavity through the through hole during the process of the housing moving away from each other.
- the support mechanism and the guide member move relative to the shell in the direction away from each other, and the guide member keeps in contact with the pole ear and relatively still, so that the pole ear can be guided to pass through the through hole while the electrode assembly is further inserted into the shell.
- the assembly process is smooth and clear, effectively improving the efficiency of the pole ear passing through the through hole and the assembly efficiency of the battery.
- the present application provides a battery assembly device, the assembly device includes a shell insertion device and a pole ear piercing device as described above, the shell insertion device is used to load the electrode assembly into the shell from the open end of the shell.
- the shell insertion device includes a shell fixing mechanism and a bearing assembly, the shell fixing mechanism is used to fix the shell, and the bearing assembly is used to bear the electrode assembly.
- the shell fixing mechanism and the pole ear piercing device can move relative to the bearing assembly to correspond to being away from or close to the bearing assembly;
- the guide member is configured so that its second end can pass through the through hole and extend into the accommodating cavity;
- the shell fixing mechanism is used to insert the shell into the electrode assembly;
- the guide member is used to contact the pole ear portion in the accommodating cavity, so that the pole ear portion overlaps the guide member to guide the pole ear portion through the through hole and extend out of the accommodating cavity.
- the pole ear of the battery when the battery shell is inserted into the electrode assembly, the pole ear of the battery can be smoothly guided to pass through the through hole, so that the pole ear is not easy to block the shell from being inserted into the electrode assembly, and the pole ear is not easy to collide with the shell to cause damage or fail to pass through the through hole smoothly, thereby achieving accurate shell insertion, effectively improving the working stability and reliability of the pole ear insertion device, effectively reducing the difficulty of battery assembly, and effectively improving the assembly efficiency and yield rate of the battery.
- the assembly equipment includes a pole ear welding device, a pole column welding device and a bottom cover welding device; wherein, the pole ear welding device is used to weld multiple pole ear sheets of the electrode assembly to form a pole ear portion; the pole column welding device is used to weld the pole ear portion passing through the through hole to the side of the pole of the shell away from the accommodating cavity; the bottom cover welding device is used to weld the bottom cover to the open end of the shell.
- the assembly equipment can realize the formation of the pole ear part, the connection between the pole ear part and the pole post, and the connection between the bottom cover and the shell, which is beneficial to improving the connection stability of the various parts of the battery structure and the stability and reliability of the battery operation.
- the present application provides a method for assembling a battery, wherein the battery comprises a housing and an electrode assembly, wherein the housing has a receiving cavity, a through hole connecting the receiving cavity and the outside is provided on the housing, the electrode assembly is arranged in the receiving cavity, and a lug piercing device is used to guide the lug portion of the electrode assembly from
- the assembly method comprises: controlling the guide member to pass through the through hole into the accommodating cavity, and controlling the shell to be inserted into the electrode assembly; in the process of inserting the shell into the electrode assembly, controlling the guide member to contact the pole ear portion, so that the pole ear portion overlaps the guide member, so as to guide the pole ear portion to pass through the through hole and extend out of the accommodating cavity.
- the pole ear of the battery can be smoothly guided to pass through the through hole, so that the pole ear is not easy to block the shell from being inserted into the electrode assembly, and the pole ear is not easy to collide with the shell to cause damage or fail to pass through the through hole smoothly, thereby realizing the precise entry of the electrode assembly into the shell, and guiding the pole ear to pass through the through hole while the shell is inserted into the electrode assembly, effectively improving the working stability and reliability of the pole ear insertion device, effectively reducing the difficulty of battery assembly, and effectively improving the battery assembly efficiency.
- the guide member is controlled to contact the pole ear portion so that the pole ear portion overlaps the guide member, including: in a first stage, the support mechanism is controlled to move together with the shell relative to the electrode assembly to drive the guide member to contact the pole ear portion in the first stage so that the pole ear portion overlaps the guide member; in a second stage, the support mechanism and the shell are controlled to move relative to each other in a direction away from each other, so that the guide member and the shell move away from each other, and the support mechanism is controlled so that the guide member and the pole ear portion remain in contact and relatively still, thereby guiding the pole ear portion to pass through the through hole and extend out of the accommodating cavity during the process of the shell moving relatively away from each other.
- the support mechanism and the shell move relative to the electrode assembly, so that the guide member and the pole ear portion can be in contact while the electrode assembly is gradually inserted into the shell.
- the support mechanism and the shell move relative to each other in a direction away from each other, and the contact between the guide member and the pole ear portion is maintained, so that the pole ear portion can be guided to pass through the through hole while the electrode assembly is further inserted into the shell.
- the assembly process is smooth and clear, effectively improving the efficiency of the pole ear portion passing through the through hole and the assembly efficiency of the battery.
- controlling the guide member to pass through the through hole into the accommodating cavity includes: controlling the support mechanism to drive the guide member to deflect so that the extension direction of the guide member is set at an angle to the preset assembly direction; controlling the support mechanism so that the guide member passes through the through hole into the accommodating cavity in a deflected state.
- the guide member can be smoothly inserted into the accommodating cavity while providing conditions for subsequent guiding of the pole ear part.
- the extension direction of the guide member is set at an angle to the preset assembly direction, which can provide a relatively gentle guiding trajectory for the pole ear part, thereby making it less likely for the pole ear part to bend and deform, which is beneficial to improving the reliability of assembly and can improve the efficiency of the electrode assembly entering the shell.
- FIG1 is a schematic structural diagram of a vehicle according to one or more embodiments.
- FIG2 is a schematic diagram of an exploded structure of a battery according to one or more embodiments.
- FIG3 is a schematic diagram of an exploded structure of a battery according to one or more embodiments.
- FIG4 is a schematic diagram of the structure of an assembly device according to one or more embodiments.
- FIG5 is a schematic diagram of the structure of a battery assembly system according to one or more embodiments.
- FIG6 is a schematic diagram of the structure of a tab-piercing device according to one or more embodiments.
- FIG7 is a schematic diagram of an implementation scenario of the tab-piercing device shown in FIG6 ;
- FIG8 is a schematic diagram of another implementation scenario of the tab piercing device shown in FIG6 ;
- FIG9 is a schematic diagram of the cross-sectional structure of the tab-piercing device shown in FIG8 along the A-A section line;
- FIG10 is a front view of the electrode ear piercing device shown in FIG6;
- FIG. 11 is a schematic flow chart of an embodiment of a method for assembling a battery of the present application.
- 100a power supply battery 200a controller; 300a motor;
- F1 preset assembly direction F2 extension direction of the guide member; F3 extension direction of the pole ear portion; F4 extension direction of the connecting portion; F5 extension direction of the extension portion;
- the term "and/or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships.
- a and/or B can represent: A exists alone, A and B exist at the same time, and B exists alone.
- the character "/" in this article generally indicates that the associated objects before and after are in an "or" relationship.
- multiple refers to more than two (including two).
- multiple groups refers to more than two groups (including two groups), and “multiple pieces” refers to more than two pieces (including two pieces).
- Batteries can store chemical energy and controllably convert chemical energy into electrical energy.
- the active materials can be activated by charging after discharge and continue to be used.
- a battery is a cup, tank or other container or part of a composite container that contains an electrolyte solution and metal electrodes to generate an electric current. It is a device that can convert chemical energy into electrical energy. With the development of science and technology, batteries with advantages such as easy portability, simple and easy charging and discharging, and long-term stable power supply are widely used in the fields of automobiles, home appliances, aerospace, etc.
- the battery's tabs are metal conductors that lead the positive and negative electrodes out of the shell from the battery cell. Therefore, during the battery assembly process, the battery's tabs need to be led out of the shell to serve as contact points when the battery is charged and discharged. However, during the battery assembly process, when the battery cell is assembled in the shell, the tabs are easily bent inside the shell and cannot extend out of the shell, making it difficult to smoothly assemble the battery cell and the shell. This results in a high degree of difficulty in the battery assembly and preparation process, and a low battery preparation yield.
- the pole ear portion can be guided when the electrode assembly is inserted into the shell so that the pole ear portion can smoothly extend from inside the shell to outside the shell.
- the present application provides a battery ear-piercing device, assembly equipment and assembly method.
- the battery includes a shell and an electrode assembly; the shell has a housing cavity, a through hole connecting the housing cavity and the outside is opened on the shell, the electrode assembly is arranged in the housing cavity, and the ear-piercing device is used to guide the ear portion of the electrode assembly to extend from the through hole.
- the ear-piercing device includes a guide member and a support mechanism, the guide member is used to penetrate the through hole, and the support mechanism is connected to the guide member and is used to fix the first end of the guide member.
- the guide member is used to extend into the housing cavity and guide the ear portion to extend out of the housing cavity through the through hole.
- the ear portion can be guided to smoothly penetrate into the through hole, so that the ear portion can smoothly extend out of the shell, so that the ear portion is not easy to block the shell from being inserted into the electrode assembly, and the ear portion is not easy to collide with the shell to cause damage or fail to smoothly penetrate the through hole, thereby realizing the precise entry of the electrode assembly into the shell, effectively improving the working stability and reliability of the ear-piercing device, effectively reducing the difficulty of battery assembly, and effectively improving the assembly efficiency and yield rate of the battery.
- the battery disclosed in the embodiments of the present application can be used in an electrical device that uses the battery as a power source or in various energy storage systems that use the battery as an energy storage element.
- the electrical device can be, but is not limited to, a mobile phone, a tablet, a laptop, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, and the like.
- the electric toy can include a fixed or mobile electric toy, for example, a game console, an electric car toy, an electric ship toy, and an electric airplane toy, and the like
- the spacecraft can include an airplane, a rocket, a space shuttle, and a spacecraft, and the like.
- Vehicle 1000a can be a fuel vehicle, a gas vehicle or a new energy vehicle.
- the new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc.
- a power supply battery 100a is arranged inside the vehicle 1000a.
- the power supply battery 100a can be arranged at the bottom, head or tail of the vehicle 1000a.
- the power supply battery 100a can be used to power the vehicle 1000a.
- the power supply battery 100a can be used as an operating power source for the vehicle 1000a.
- the vehicle 1000a may also include a controller 200a and a motor 300a.
- the controller 200a is used to control the power supply battery 100a to power the motor 300a, for example, for the starting, navigation and driving power requirements of the vehicle 1000a.
- the power supply battery 100a can not only serve as the operating power source of the vehicle 1000a, but also serve as the driving power source of the vehicle 1000a, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000a.
- the power supply battery 100a may be an energy storage device, including an energy storage container, an energy storage cabinet, and the like.
- the power supply battery 100 a mentioned in the embodiment of the present application refers to a single physical module including one or more batteries 1 to provide higher voltage and capacity.
- the battery 1 may be a secondary battery, which refers to a battery that can be recharged to activate the active material after the battery is discharged and can continue to be used.
- Each battery 1 may also be a primary battery.
- the battery 1 includes, but is not limited to, lithium ion batteries, sodium ion batteries, sodium lithium ion batteries, lithium metal batteries, sodium metal batteries, lithium sulfur batteries, magnesium ion batteries, nickel hydrogen batteries, nickel cadmium batteries, lead storage batteries, etc.
- the battery 1 may be cylindrical, flat, rectangular, or in other shapes.
- the power supply battery 100a may be a battery module.
- the multiple batteries 1 are arranged and fixed to form a battery module.
- the power supply battery 100 a may be a battery pack, which includes a box body 10 a and a battery 1 , wherein the battery 1 or a battery module is accommodated in the box body 10 a .
- the box 10a can be used as a part of the chassis structure of the vehicle 1000a.
- part of the box 10a can become at least a part of the floor of the vehicle 1000a, or part of the box 10a can become at least a part of the cross beam and longitudinal beam of the vehicle 1000a.
- the power supply battery 100a includes a box 10a and a battery 1, and the battery 1 is contained in the box 10a.
- the box 10a is used to provide a storage space for the battery 1, and the box 10a can adopt a variety of structures.
- the box 10a can include a first part 11a and a second part 12a, and the first part 11a and the second part 12a cover each other, and the first part 11a and the second part 12a jointly define a storage space for accommodating the battery 1.
- the second part 12a can be a hollow structure with one end open, and the first part 11a can be a plate-like structure, and the first part 11a covers the open side of the second part 12a, so that the first part 11a and the second part 12a jointly define a storage space; the first part 11a and the second part 12a can also be hollow structures with one side open, and the open side of the first part 11a covers the open side of the second part 12a.
- the box 10a formed by the first part 11a and the second part 12a can be a variety of shapes, such as a cylinder, a cuboid, etc.
- the power supply battery 100a there can be multiple batteries 1, and the multiple batteries 1 can be connected in series, in parallel, or in mixed connection.
- Mixed connection means that the multiple batteries 1 are both connected in series and in parallel.
- the multiple batteries 1 can be directly connected in series, in parallel, or in mixed connection, and then the whole formed by the multiple batteries 1 is accommodated in the box 10a; of course, the power supply battery 100a can also be a battery module formed by connecting multiple batteries 1 in series, in parallel, or in mixed connection, and then the multiple battery modules are connected in series, in parallel, or in mixed connection to form a whole, and accommodated in the box 10a.
- the power supply battery 100a can also include other structures.
- the power supply battery 100a can also include a converging component for realizing electrical connection between the multiple batteries 1.
- the battery 1 is the smallest unit of the battery. As shown in Fig. 3 , the battery 1 includes a housing 10 , an electrode assembly 20 and other functional components.
- the housing 10 is used to encapsulate the electrode assembly 20 and electrolyte components.
- the housing 10 can be a steel housing, an aluminum housing, a plastic housing (such as polypropylene), a composite metal housing (such as a copper-aluminum composite housing), or an aluminum-plastic film.
- the battery 1 may include a bottom cover 30.
- the bottom cover 30 refers to a component that covers the opening of the shell 10 to isolate the internal environment of the battery 1 from the external environment.
- the shape of the bottom cover 30 can be adapted to the shape of the shell 10 to match the shell 10.
- the bottom cover 30 can be made of a material with a certain hardness and strength (such as an aluminum alloy), so that the bottom cover 30 is not easily deformed when it is squeezed and collided, so that the battery 1 can have a higher structural strength and the safety performance can also be improved.
- the material of the bottom cover 30 can also be a variety of materials, for example, including but not limited to copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.
- an insulating component can also be provided on the inner side of the bottom cover 30, and the insulating component can be used to isolate the electrical connection components in the shell 10 from the bottom cover 30 to reduce the risk of short circuit.
- the insulating component can be plastic, rubber, etc.
- the shell 10 is a component used to cooperate with the bottom cover 30 to form an internal environment of the battery 1, wherein the formed internal environment can be used to accommodate the electrode assembly 20, electrolyte and other components.
- the shell 10 and the bottom cover 30 can be independent components, and an open end 12 can be set on the shell 10, and the internal environment of the battery 1 is formed by covering the open end 12 with the bottom cover 30.
- the bottom cover 30 and the shell 10 can also be integrated.
- the bottom cover 30 and the shell 10 can form a common connection surface before other components are put into the shell, and when the interior of the shell 10 needs to be encapsulated, the bottom cover 30 is covered with the shell 10.
- the shell 10 can be of various shapes and sizes, such as long and small.
- the shell 10 may be in the shape of a cube, a cylinder, a hexagonal prism, etc. Specifically, the shape of the shell 10 may be determined according to the specific shape and size of the electrode assembly 20.
- the shell 10 may be made of a variety of materials, for example, including but not limited to copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.
- Functional components such as electrode terminals may be provided on the shell 10. The electrode terminals may be used to electrically connect to the electrode assembly 20 for outputting or inputting electrical energy of the battery 1.
- the shell 10 may also be provided with a pressure relief mechanism for releasing the internal pressure when the internal pressure or temperature of the battery 1 reaches a threshold value.
- the electrode assembly 20 is a component where electrochemical reactions occur in the battery 1.
- One or more electrode assemblies 20 may be contained in the housing 10.
- the electrode assembly 20 includes a positive electrode, a negative electrode, and a separator.
- active ions such as lithium ions
- the separator is arranged between the positive electrode and the negative electrode to prevent the positive and negative electrodes from short-circuiting, while allowing the active ions to pass through.
- the positive electrode may be a positive electrode sheet, and the positive electrode sheet may include a positive electrode current collector and a positive electrode active material disposed on at least one surface of the positive electrode current collector.
- the positive electrode current collector has two surfaces facing each other in its thickness direction, and the positive electrode active material is disposed on either or both of the two facing surfaces of the positive electrode current collector.
- the positive electrode current collector may be a metal foil or a composite current collector.
- the metal foil aluminum or stainless steel, stainless steel, copper, aluminum, nickel, carbon electrode, carbon, nickel or titanium, etc., treated with silver surface, may be used.
- the composite current collector may include a polymer material base and a metal layer.
- the composite current collector may be formed by forming a metal material (aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, silver and silver alloy, etc.) on a polymer material substrate (such as a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).
- the positive electrode active material may include at least one of the following materials: lithium-containing phosphates, lithium transition metal oxides, and their respective modified compounds.
- the present application is not limited to these materials, and other traditional materials that can be used as positive electrode active materials for batteries may also be used. These positive electrode active materials may be used alone or in combination of two or more.
- lithium-containing phosphates may include, but are not limited to, at least one of lithium iron phosphate (such as LiFePO4 (also referred to as LFP)), a composite material of lithium iron phosphate and carbon, lithium manganese phosphate (such as LiMnPO4), a composite material of lithium manganese phosphate and carbon, lithium iron manganese phosphate, and a composite material of lithium iron manganese phosphate and carbon.
- lithium iron phosphate such as LiFePO4 (also referred to as LFP)
- LiMnPO4 lithium manganese phosphate
- lithium transition metal oxides may include, but are not limited to, lithium cobalt oxide (such as LiCoO2), lithium nickel oxide (such as LiNiO2), lithium manganese oxide (such as LiMnO2, LiMn2O4), lithium nickel cobalt oxide, lithium manganese cobalt oxide, lithium nickel manganese oxide, lithium nickel cobalt manganese oxide (such as LiNi1/3Co1/3Mn1/3O2 (also referred to as NCM333), LiNi0.5Co0.2Mn0.3O2 (also referred to as NCM523), LiNi0.5Co0.25Mn0.25O2 (also referred to as NCM211), LiNi0.6Co0.2Mn0.2O2 (also referred to as NCM622), LiNi0.8Co0.1Mn0.1O2 (also referred to as NCM811), lithium nickel cobalt aluminum oxide (such as LiNi0.85Co0.15Al0.05O2) and at least one of their modified compounds.
- lithium cobalt oxide such as LiCoO2
- the negative electrode may be a negative electrode sheet, and the negative electrode sheet may include a negative electrode current collector.
- the negative electrode current collector can be a metal foil, a foamed metal or a composite current collector.
- a metal foil aluminum or stainless steel treated with silver, stainless steel, copper, aluminum, nickel, carbon electrode, carbon, nickel or titanium, etc. can be used.
- the foamed metal can be a foamed nickel, a foamed copper, a foamed aluminum, a foamed alloy or a foamed carbon, etc.
- the composite current collector can include a polymer material base and a metal layer.
- the composite current collector can be formed by forming a metal material (copper, copper alloy, nickel, nickel alloy, titanium, titanium alloy, silver and silver alloy, etc.) on a polymer material substrate (such as a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).
- a metal material copper, copper alloy, nickel, nickel alloy, titanium, titanium alloy, silver and silver alloy, etc.
- a polymer material substrate such as a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.
- the negative electrode sheet may include a negative electrode current collector and a negative electrode active material disposed on at least one surface of the negative electrode current collector.
- the negative electrode current collector has two surfaces facing each other in its thickness direction, and the negative electrode active material is disposed on either or both of the two facing surfaces of the negative electrode current collector.
- the negative electrode active material may adopt the negative electrode active material for the battery known in the art.
- the negative electrode active material may include at least one of the following materials: artificial graphite, natural graphite, soft carbon, hard carbon, silicon-based materials, tin-based materials and lithium titanate, etc.
- the silicon-based material may be selected from at least one of elemental silicon, silicon oxide compounds, silicon-carbon composites, silicon-nitrogen composites and silicon alloys.
- the tin-based material may be selected from at least one of elemental tin, tin oxide compounds and tin alloys.
- the present application is not limited to these materials, and other traditional materials that can be used as negative electrode active materials for batteries may also be used. These negative electrode active materials may be used alone or in combination of two or more.
- the material of the positive electrode current collector may be aluminum, and the material of the negative electrode current collector may be copper.
- the electrode assembly 20 further includes a separator disposed between the positive electrode and the negative electrode.
- the separator is a separator.
- the present application has no particular limitation on the type of separator, and any known separator with a porous structure having good chemical stability and mechanical stability can be selected.
- the main material of the separator can be selected from at least one of glass fiber, non-woven fabric, polyethylene, polypropylene, polyvinylidene fluoride, and ceramic.
- the separator can be a single-layer film or a multi-layer composite film, without special restrictions. When the separator is a multi-layer composite film, the materials of each layer can be the same or different, without special restrictions.
- the separator can be a separate component located between the positive and negative electrodes, or it can be attached to the surface of the positive and negative electrodes.
- the separator is a solid electrolyte, which is disposed between the positive electrode and the negative electrode and serves to transmit ions and isolate the positive and negative electrodes.
- the battery 1 further includes an electrolyte, which plays a role of conducting ions between the positive and negative electrodes.
- an electrolyte which plays a role of conducting ions between the positive and negative electrodes.
- the present application has no specific restrictions on the type of electrolyte, which can be selected according to needs.
- the electrolyte can be liquid, gel or solid.
- the liquid electrolyte includes an electrolyte salt and a solvent.
- the electrolyte salt can be selected from at least one of lithium hexafluorophosphate, lithium tetrafluoroborate, lithium perchlorate, lithium hexafluoroarsenate, lithium bis(fluorosulfonyl)imide, lithium bis(trifluoromethanesulfonyl)imide, lithium trifluoromethanesulfonate, lithium difluorophosphate, lithium difluorooxalatoborate, lithium dioxalatoborate, lithium difluorodioxalatophosphate, and lithium tetrafluorooxalatophosphate.
- the solvent can be selected from at least one of ethylene carbonate, propylene carbonate, ethyl methyl carbonate, diethyl carbonate, dimethyl carbonate, dipropyl carbonate, methyl propyl carbonate, ethyl propyl carbonate, butylene carbonate, fluoroethylene carbonate, methyl formate, methyl acetate, ethyl acetate, propyl acetate, methyl propionate, ethyl propionate, propyl propionate, methyl butyrate, ethyl butyrate, 1,4-butyrolactone, cyclopentane, dimethyl sulfone, methyl ethyl sulfone and diethyl sulfone.
- the solvent can also be selected from ether solvents.
- Ether solvents can include one or more of ethylene glycol dimethyl ether, ethylene glycol diethyl ether, diethylene glycol dimethyl ether, triethylene glycol dimethyl ether, tetraethylene glycol dimethyl ether, 1,3-dioxolane, tetrahydrofuran, methyltetrahydrofuran, diphenyl ether and crown ether.
- the gel electrolyte includes a skeleton network with a polymer as the electrolyte, combined with an ionic liquid-lithium salt.
- solid electrolytes include polymer solid electrolytes, inorganic solid electrolytes, and composite solid electrolytes.
- the polymer solid electrolyte may be polyether (polyethylene oxide), polysiloxane, polycarbonate, polyacrylonitrile, polyvinylidene fluoride, polymethyl methacrylate, a single ion polymer, polyionic liquid-lithium salt, cellulose, and the like.
- the inorganic solid electrolyte can be an oxide solid electrolyte (crystalline perovskite, sodium superconducting ion conductor, garnet, amorphous LiPON film), a sulfide solid electrolyte (crystalline lithium superion conductor (lithium germanium phosphosulfide, silver germanium sulfide), amorphous sulfide) and one or more of a halide solid electrolyte, a nitride solid electrolyte and a hydride solid electrolyte.
- oxide solid electrolyte crystalline perovskite, sodium superconducting ion conductor, garnet, amorphous LiPON film
- a sulfide solid electrolyte crystalline lithium superion conductor (lithium germanium phosphosulfide, silver germanium sulfide), amorphous sulfide) and one or more of a halide solid electrolyte, a nitride
- the composite solid electrolyte is formed by adding an inorganic solid electrolyte filler to a polymer solid electrolyte.
- the electrode assembly 20 is a wound structure.
- the positive electrode sheet and the negative electrode sheet are wound into a wound structure.
- the electrode assembly 20 is provided with a lug portion 21, which can lead current from the electrode assembly 20.
- the lug portion 21 includes a positive lug and a negative lug.
- the positive lug and the negative lug can be located together at one end of the main body or at both ends of the main body.
- the positive active material and the negative active material react with the electrolyte, and the lug portion 21 connects the electrode terminal to form a current loop.
- a battery 1 may include a shell 10 and an electrode assembly 20, the shell 10 having a accommodating cavity 11, an open end 12 connected to the accommodating cavity 11 being provided on the shell 10, the shell 10 also having a top 13 arranged opposite to the open end 12, the top 13 may be provided with a through hole 14 connecting the accommodating cavity 11 and the outside, a pole ear portion 21 may be provided at one end of the electrode assembly 20, the shell 10 is used to insert the electrode assembly 20 through the open end 12 along a preset assembly direction F1, so that the electrode assembly 20 is accommodated in the accommodating cavity 11 and the pole ear portion 21 extends out of the accommodating cavity 11 through the through hole 14.
- the housing 10 may include a pole 15.
- the pole 15 may be disposed at the top 13 of the housing 10, and the through hole 14 may be opened at the pole 15.
- the active material coating portion of the electrode assembly 20 is disposed in the housing 10, and the pole ear portion 21 of the electrode assembly 20 may pass through the through hole 14 and be connected to the side of the pole 15 away from the accommodating cavity 11, thereby outputting the electrical energy in the electrode assembly 20 to the outside of the battery 1.
- the housing 10 may be inserted into the electrode assembly 20 through the open end 12 to accommodate the electrode assembly 20.
- the battery 1 may further include a bottom cover 30 , which is used to cover the opening end 12 , so that the electrode assembly 20 is not likely to fall from the opening end 12 after being put into the shell.
- the assembly device 3 includes a shell insertion device 40 and a tab insertion device 2.
- the shell insertion device 40 is used to insert the electrode assembly 20 into the shell 10 from the open end 12 of the shell 10, and the shell insertion device 40 includes a shell fixing mechanism 41 and a bearing assembly 42, the shell fixing mechanism 41 is used to fix the shell 10, and the bearing assembly 42 is located below the shell fixing mechanism 41 and the tab insertion device 2 in the preset assembly direction F1, and is used to carry the electrode assembly 20.
- the electrode assembly 20 and the bottom cover 30 can be stacked on the carrier assembly 42 in sequence according to the preset assembly direction F1, so that after the electrode assembly 20 is placed in the shell, the bottom cover 30 can cover the open end 12.
- the carrier assembly 42 can also further fix the electrode assembly 20 and the bottom cover 30 to reduce the displacement of the electrode assembly 20 during transportation or shell placement.
- the shell fixing mechanism 41 and the pole ear device 2 are configured to be able to move relative to the bearing assembly 42 along a preset assembly direction F1 to correspond to being away from or close to the bearing assembly 42.
- the pole ear device 2 includes a guide member 100 for contacting and guiding the pole ear portion 21, the first end 201 of the guide member 100 is used to be connected to the pole ear device 2, and the second end 202 of the guide member 100 is used to pass through the through hole 14 to guide the pole ear portion 21.
- the guide member 100 before contacting the pole ear portion 21, the guide member 100 is configured so that its second end 202 can pass through the through hole 14 and extend into the accommodating cavity 11, and the shell fixing mechanism 41 inserts the shell 10 into the electrode assembly 20 during the descent process.
- the guide member 100 contacts the pole ear portion 21 in the accommodating cavity 11, so that the pole ear portion 21 overlaps the guide member 100 to guide the pole ear portion 21 to penetrate into the through hole 14.
- the process of inserting the shell 10 into the electrode assembly 20 includes a first stage and a second stage arranged in a sequential order.
- the shell fixing mechanism 41 and the through-ear device 2 are arranged to be able to descend together along a preset assembly direction F1 relative to the bearing assembly 42, so that the through-ear device 2 can contact the pole ear portion 21 in the accommodating cavity 11.
- the shell fixing mechanism 41 is arranged to be able to descend along a preset assembly direction F1 relative to the through-ear device 2, so that the through-ear device 2 guides the pole ear portion 21 to penetrate into the through hole 14.
- the through-ear device 2 is arranged to be able to descend along a preset assembly direction F1 relative to the shell fixing mechanism 41, and penetrate into the accommodating cavity 11 from the side of the top 13 through the through hole 14, and descend relative to the bearing assembly 42 together with the shell fixing mechanism 41 in the first stage.
- the pole ear portion 21 of the battery 1 can be smoothly guided to penetrate the through hole 14, so that the pole ear portion 21 is not easy to block the shell 10 from being inserted into the electrode assembly 20, and the pole ear portion 21 is not easy to collide with the shell 10 to cause damage or fail to penetrate the through hole 14 smoothly, thereby achieving accurate insertion of the electrode assembly 20, effectively improving the working stability and reliability of the pole ear insertion device 2, effectively reducing the assembly difficulty of the battery 1, and effectively improving the assembly efficiency and yield rate of the battery 1.
- the assembly device 3 includes a tab welding device 50, a pole welding device 60, and a bottom cover welding device 70.
- the tab welding device 50 is used to weld a plurality of tab sheets of the electrode assembly 20 to form a tab portion 21;
- the pole welding device 60 is used to weld the tab portion 21 passing through the through hole 14 to the side of the pole 15 of the housing 10 away from the accommodating cavity 11;
- the bottom cover welding device 70 is used to weld the bottom cover 30 to the open end 12 of the housing 10.
- the assembly equipment 3 can realize the formation of the pole ear part 21, the connection between the pole ear part 21 and the pole post 15, and the connection between the bottom cover 30 and the shell 10, which is beneficial to improving the connection stability of the various parts of the battery 1 and the stability and reliability of the operation of the battery 1.
- the conveying equipment 4 includes a conveying line, which can be a conveying structure formed by a conveying roller driven by a motor and a conveying belt, or a conveying structure formed by a conveying chain link driven by a motor, or an AGV conveying trolley, which can realize conveying in at least one direction and can support and ensure the stability of the structure to be assembled.
- the purpose of the pole lug welding device 50 is to form the pole lug portion 21 after pre-welding the pole lug sheet, and it can be an ultrasonic welding device, which can ensure that the pole lug sheet is welded in a clamped stable state.
- the purpose of the pole column welding device 60 is to achieve the welding of the pole lug portion 21 and the pole 15, and it can be a laser welding device.
- the purpose of the bottom cover welding device 70 is to achieve the circumferential edge welding of the bottom cover 30 and the opening end 12 of the shell 10, and it is also a laser welding device.
- the assembly equipment 3 is not limited to including the pole tab welding device 50, the shell insertion device 40, the pole tab piercing device 2, the pole column welding device 60 and the bottom cover welding device 70.
- the assembly equipment 3 also includes a pairing device 80, which is used to stack multiple electrode assemblies 20 so that the pole tabs of the two electrode assemblies 20 are roughly opposite, so that the conveying structure can convey the matched electrode assemblies 20 to the pole tab welding device 50 for welding the pole tabs to facilitate the formation of the pole tab portion 21.
- dust removal, NG detection stations, etc. can also be added between any two adjacent stations, which is not limited in this embodiment.
- the lug piercing device 2 includes a guide member 100 and a support mechanism 200.
- the guide member 100 is used to penetrate into the through hole 14.
- the support mechanism 200 is connected to the guide member 100 and is used to fix the first end 201 of the guide member 100.
- the guide member 100 Before contacting the pole ear portion 21, the guide member 100 is configured so that its second end 202 can pass through the through hole 14 and extend into the accommodating cavity 11. During the process of inserting the shell 10 into the electrode assembly 20, the guide member 100 is used to extend into the accommodating cavity 11 and contact the pole ear portion 21, so that the pole ear portion 21 is overlapped on the guide member 100 to guide the pole ear portion 21 to extend out of the accommodating cavity 11 through the through hole 14.
- the pole ear portion 21 can be overlapped on the guide member 100, and under the premise of not affecting and damaging the shell 10 and the pole ear portion 21, the pole ear portion 21 can be guided to smoothly penetrate into the through hole 14, so that the pole ear portion 21 can smoothly extend out of the shell 10, so that the pole ear portion 21 is not easy to block the shell 10 from being inserted into the electrode assembly 20, and the pole ear portion 21 is not easy to collide with the shell 10 to cause damage or fail to smoothly penetrate into the through hole 14, thereby achieving accurate shell insertion of the electrode assembly 20, effectively improving the working stability and reliability of the pole ear piercing device 2, effectively reducing the assembly difficulty of the battery 1, and effectively improving the assembly efficiency and yield rate of the battery 1.
- the support mechanism 200 is configured to drive the guide member 100 to deflect, so that the extension direction F2 of the guide member 100 is set at an angle to the preset assembly direction F1 to obliquely guide the pole ear portion 21 to penetrate into the through hole 14.
- the extension direction F2 of the guide member 100 before entering the through hole 14 can be consistent with the preset assembly direction F1, and when the guide member 100 is required to enter the through hole 14 to guide the pole ear portion 21, the support mechanism 200 drives the guide member 100 to deflect so that its extension direction F2 is set at an angle to the preset assembly direction F1.
- the guide member 100 can guide the pole ear portion 21 at a reasonable tilt angle, so that the guide member 100 can provide a relatively gentle guidance to the pole ear portion 21, and the tilted guide member 100 can be misaligned with the pole ear portion 21 when entering the through hole 14, thereby reducing the possibility of damage caused by collision between the guide member 100 and the pole ear portion 21. Therefore, the pole ear portion 21 can be guided to penetrate into the through hole 14 without damaging the pole ear portion 21 , and the pole ear portion 21 is less likely to be bent or stuck and unable to penetrate, thereby effectively improving the working stability and reliability of the pole ear piercing device 2 .
- an extension direction F2 of the guide member 100 is set at an angle to an extension direction F3 of the pole ear portion 21
- the extension direction F3 of the pole ear portion 21 is set at an angle to a preset assembly direction F1 .
- the pole ear portion 21 has a first side surface 101 and a second side surface 102 opposite to each other, the pole ear portion 21 is inclined toward the side where the first side surface 101 is located relative to the preset assembly direction F1, and the second end 202 of the guide member 100 is inclined toward the side where the first side surface 101 is located relative to the first end 201, and contacts the pole ear portion 21 on the side where the first side surface 101 is located.
- the pole ear portion 21 is inclined toward the side where the first side surface 101 is located relative to the preset assembly direction F1.
- the second end 202 of the guide member 100 is set to be inclined toward the side where the first side surface 101 is located relative to the first end 201, so as to achieve the staggered setting of the guide member 100 and the pole ear portion 21, so that the pole ear portion 21 can be overlapped on the inclined surface of the guide member 100, and then the guide member 100 can guide the pole ear portion 21 during the process of the electrode assembly 20 being inserted into the shell, thereby effectively reducing the assembly difficulty of the battery 1 and effectively improving the assembly efficiency and yield rate of the battery 1.
- the guide member 100 is configured to extend obliquely from the side where the second side 102 is located to the first side 101 , and contact the pole ear 21 on the side where the first side 101 of the pole ear 21 is located.
- the guide member 100 By arranging the guide member 100 to extend obliquely from the side where the second side surface 102 is located to the first side surface 101, so that the inclination angle of the guide member 100 relative to the pole ear portion 21 is relatively gentle, the pole ear portion 21 is guided more gently, and the pole ear portion 21 can be smoothly overlapped with the guide member 100, effectively avoiding the pole ear portion 21 from colliding with the guide member 100 or the shell 10 to cause bending or damage, effectively reducing the assembly difficulty of the battery 1, and effectively improving the assembly efficiency and yield rate of the battery 1.
- the support mechanism 200 includes a base 210, a flip drive motor 220 and a clamping mechanism 230, wherein the clamping mechanism 230 is disposed on the base 210, and the flip drive motor 220 is disposed on the base 210 and is in transmission connection with the clamping mechanism 230.
- the clamping mechanism 230 clamps the guide member 100, and the flip drive motor 220 is used to drive the clamping mechanism 230 to rotate, so as to drive the guide member 100 to deflect.
- the supporting mechanism 200 may include a first synchronous wheel 221, a second synchronous wheel 222 and a synchronous belt 223, wherein the first synchronous wheel 221 is driven to rotate by the flipping drive motor 220, so that the first synchronous wheel 221 drives the second synchronous wheel 222 to rotate through the synchronous belt 223, so that the clamping mechanism 230 is driven to rotate by the second synchronous wheel 222.
- the clamping mechanism 230 includes a rotating seat 231 and a clamping block 235, and the rotating seat 231 includes a connecting portion 232, an extending portion 233, and a limiting portion 234.
- the connecting portion 232 and the limiting portion 234 are arranged at both ends of the extending portion 233, and extend in the same side direction of the extending portion 233, and the extending direction F4 of the limiting portion 234 and the connecting portion 232 is perpendicular to the extending direction F5 of the extending portion 233.
- the connecting portion 232 is rotatably connected to the base 210, and the clamping block 235 is arranged on the same side of the extending portion 233, and is located between the connecting portion 232 and the limiting portion 234.
- the clamping block 235 and the limiting portion 234 are arranged relative to the top 13 of the shell 10.
- the height of the clamping block 235 is lower than the height of the limiting portion 234.
- the clamping block 235 is used to clamp the guide member 100.
- the guide member 100 can guide the pole ear portion 21 in a suitable tilted posture, effectively improving the working stability and reliability of the pole ear device 2.
- the limiting portion 234 is used to provide a limit to the length of the guide member 100 extending into the accommodating cavity 11, effectively reducing the possibility of damage to the pole ear portion 21 or the housing 10 due to the excessive length of the guide member 100 extending into the accommodating cavity 11, which is conducive to improving the working reliability and stability of the pole ear device 2.
- the guide member 100 is provided in a sheet shape, and a main surface of the guide member 100 is used for overlapping the pole ear portion 21 .
- a smooth main surface is provided for the pole ear portion 21 for guidance, which is beneficial to improving the guiding efficiency and stability of the guide member 100 on the pole ear portion 21 , and is beneficial to reducing the difficulty of assembling the battery 1 .
- the support mechanism 200 fixes the first end 201 of the guide member 100 so that the second end 202 of the guide member 100 is suspended.
- the first end 201 of the guide member 100 is fixed by the support mechanism 200, and the second end 202 of the guide member 100 is suspended, so that the suspended second end 202 can extend into the accommodating cavity 11 while the guide member 100 is fixed, thereby
- the guiding structure is simple and effective, which is beneficial to improving the guiding efficiency and stability of the guide member 100 on the pole ear portion 21 and is beneficial to reducing the difficulty of assembling the battery 1.
- the process of inserting the housing 10 into the electrode assembly 20 includes a first stage.
- the support mechanism 200 is configured to be able to move relative to the electrode assembly 20 together with the housing 10, and the guide member 100 is used to contact the pole ear portion 21 in the first stage and allow the pole ear portion 21 to slide on the guide member 100, so that the pole ear portion 21 overlaps the guide member 100.
- the support mechanism 200 moves together with the shell 10 relative to the electrode assembly 20 to enable the guide member 100 to extend into the through hole 14 and contact the pole ear portion 21, so that the pole ear portion 21 is overlapped on the guide member 100 and slides along the guide member 100, so as to guide the pole ear portion 21 to a position convenient for extending out of the through hole 14, thereby enabling the pole ear portion 21 to be guided smoothly and fluently, effectively improving the guiding efficiency of the pole ear piercing device 2 and the assembly efficiency of the battery 1.
- the process of inserting the housing 10 into the electrode assembly 20 includes a second stage after the first stage.
- the support mechanism 200 is configured to be able to move relative to the housing 10 in a direction away from each other, so that the guide member 100 and the housing 10 are away from each other.
- the guide member 100 is configured to keep in contact with the pole ear portion 21 and relatively stationary, thereby guiding the pole ear portion 21 to penetrate the through hole 14 during the process of the housing 10 being relatively away from each other.
- the support mechanism 200 and the guide member 100 move relative to the shell 10 in the direction away from each other, and the guide member 100 keeps contact with the pole ear portion 21 and is relatively still, so that the pole ear portion 21 can be guided to penetrate into the through hole 14 while the electrode assembly 20 is further inserted into the shell, and the assembly process is smooth and clear, which effectively improves the efficiency of the pole ear portion 21 penetrating the through hole 14 and the assembly efficiency of the battery 1.
- the assembly method of the battery 1 of the present application may include the following steps.
- the support mechanism 200 is controlled to drive the guide member 100 to deflect, so that the extension direction F2 of the guide member 100 is set at an angle with the preset assembly direction F1, and then the support mechanism 200 is controlled to make the guide member 100 penetrate into the accommodating cavity 11 through the through hole 14 in the deflected state, and then the guide member 100 and the shell 10 are controlled to descend along the preset assembly direction F1 to approach the electrode assembly 20, so that the pole ear portion 21 is smoothly overlapped with the guide member 100, and the shell 10 is gradually inserted into the electrode assembly 20.
- the guide member 100 can be smoothly inserted into the accommodating cavity 11 while providing conditions for the subsequent guiding of the pole ear portion 21.
- the extension direction F2 of the guide member 100 is set at an angle with the preset assembly direction F1, which can provide a relatively gentle guiding trajectory for the pole ear portion 21, so that the pole ear portion 21 is not prone to bending and deformation, which is beneficial to improving the reliability of assembly and can improve the efficiency of the electrode assembly 20 entering the shell.
- the process of inserting the housing 10 into the electrode assembly 20 includes a first stage and a second stage arranged in a sequential order.
- the support mechanism 200 is controlled to move together with the housing 10 relative to the electrode assembly 20 to drive the guide member 100 to contact the pole ear portion 21 in the first stage, so that the pole ear portion 21 overlaps the guide member 100.
- the support mechanism 200 and the housing 10 are controlled to move relative to each other in a direction away from each other, so that the guide member 100 and the housing 10 are away from each other, and the support mechanism 200 is controlled so that the guide member 100 and the pole ear portion 21 remain in contact and relatively still, thereby guiding the pole ear portion 21 to penetrate into the through hole 14 during the process of the housing 10 moving away from each other.
- the guide member 100 By moving the support mechanism 200 and the shell 10 together relative to the electrode assembly 20 in the first stage, the guide member 100 can be in contact with the pole ear portion 21 while the electrode assembly 20 is gradually inserted into the shell.
- the support mechanism 200 and the shell 10 move relative to each other away from each other and maintain contact between the guide member 100 and the pole ear portion 21.
- the pole ear portion 21 can be guided to penetrate the through hole 14 while the electrode assembly 20 is further inserted into the shell.
- the assembly process is smooth and clear, effectively improving the efficiency of the pole ear portion 21 penetrating the through hole 14 and the assembly efficiency of the battery 1.
- the pole ear portion 21 By smoothly guiding the pole ear portion 21 to penetrate the through hole 14, the pole ear portion 21 is not easy to block the shell 10 from being inserted into the electrode assembly 20, and the pole ear portion 21 is not easy to collide with the shell 10 to cause damage or fail to smoothly penetrate the through hole 14, thereby achieving accurate insertion of the electrode assembly 20 into the shell, and guiding the pole ear portion 21 to penetrate the through hole 14 while the shell 10 is inserted into the electrode assembly 20, effectively improving the working stability and reliability of the pole ear insertion device 2, effectively reducing the assembly difficulty of the battery 1, and effectively improving the assembly efficiency of the battery 1.
- the battery 1 includes a shell 10 and an electrode assembly 20; the shell 10 has a housing 11, and a through hole 14 is opened on the shell 10 to connect the housing 11 and the outside, the electrode assembly 20 is arranged in the housing 11, and the electrode ear device 2 is used to guide the pole ear portion 21 of the electrode assembly 20 to extend from the through hole 14.
- the pole ear device 2 includes a guide member 100 and a support mechanism 200, the guide member 100 is used to penetrate the through hole 14, and the support mechanism 200 is connected to the guide member 100 and is used to fix the first end 201 of the guide member 100.
- the guide member 100 is used to extend into the housing 11 and guide the pole ear portion 21 to extend out of the housing 11 through the through hole 14.
- the support mechanism 200 is configured to drive the guide member 100 to deflect, so that the extension direction F2 of the guide member 100 is set at an angle with the preset assembly direction F1, so as to obliquely guide the pole ear portion 21 to extend out of the housing 11 through the through hole 14.
- the extension direction F2 of the guide member 100 is set at an angle to the extension direction F3 of the pole ear portion 21, and the extension direction F3 of the pole ear portion 21 is set to be set at an angle to the preset assembly direction F1.
- the pole ear portion 21 has a first side surface 101 and a second side surface 102 opposite to each other, and the pole ear portion 21 is inclined toward the side where the first side surface 101 is located relative to the preset assembly direction F1; the second end 202 of the guide member 100 is inclined toward the side where the first side surface 101 is located relative to the first end 201, and contacts the pole ear portion 21 on the side where the first side surface 101 is located.
- the guide member 100 is set to extend obliquely from the side where the second side surface 102 is located to the first side surface 101, and contacts the pole ear portion 21 on the side where the first side surface 101 of the pole ear portion 21 is located.
- the support mechanism 200 includes a base 210, The flip driving motor 220 and the clamping mechanism 230 are provided on the base 210.
- the flip driving motor 220 is provided on the base 210 and is in transmission connection with the clamping mechanism 230.
- the clamping mechanism 230 clamps the guide member 100, and the flip driving motor 220 is used to drive the clamping mechanism 230 to rotate so as to drive the guide member 100 to deflect.
- the clamping mechanism 230 includes a rotating seat 231 and a clamping block 235.
- the rotating seat 231 includes a connecting portion 232, an extending portion 233 and a limiting portion 234.
- the connecting portion 232 and the limiting portion 234 are provided at both ends of the extending portion 233 and extend in the same side direction of the extending portion 233.
- the extending direction F4 of the limiting portion 234 and the connecting portion 232 is perpendicular to the extending direction F5 of the extending portion 233.
- the connecting portion 232 is rotatably connected to the base 210, and the clamping block 235 is arranged on the same side of the extension portion 233 and is located between the connecting portion 232 and the limiting portion 234. In the process of inserting the shell 10 into the electrode assembly 20, part of the extension portion 233, the clamping block 235 and the limiting portion 234 are arranged relative to the top 13 of the shell 10.
- the height of the clamping block 235 is lower than the height of the limiting portion 234, and the clamping block 235 is used to clamp the guide member 100.
- the guide member 100 is arranged in a sheet shape, and a main surface of the guide member 100 is used for overlapping the pole ear portion 21.
- the support mechanism 200 fixes the first end 201 of the guide member 100 so that the second end 202 of the guide member 100 is suspended.
- the process of inserting the shell 10 into the electrode assembly 20 includes a first stage.
- the support mechanism 200 is configured to be able to move relative to the electrode assembly 20 together with the shell 10, and the guide member 100 is used to contact the pole ear portion 21 in the first stage and allow the pole ear portion 21 to slide on the guide member 100, so that the pole ear portion 21 overlaps the guide member 100.
- the process of inserting the shell 10 into the electrode assembly 20 includes a second stage located after the first stage.
- the support mechanism 200 is configured to be able to move relative to the shell 10 in a direction away from each other, so that the guide member 100 and the shell 10 are away from each other.
- the guide member 100 is configured to maintain contact with the pole ear portion 21 and relatively stationary, thereby guiding the pole ear portion 21 to extend out of the accommodating cavity 11 through the through hole 14 during the process of the shell 10 moving relatively away.
- the assembly device 3 includes the above-mentioned lug piercing device 2.
- the lug portion 21 can smoothly extend out of the housing 10, which can effectively reduce the assembly difficulty of the battery 1 and effectively improve the assembly efficiency of the battery 1.
- the embodiments of the present application can enable the pole ear portion 21 to smoothly extend out of the housing 10 , which can effectively reduce the difficulty of assembling the battery 1 and effectively improve the assembly efficiency of the battery 1 .
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- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
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- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
Description
Claims (16)
- 一种电池的穿极耳装置,其中,所述电池包括壳体和电极组件;所述壳体具有容纳腔,所述壳体上开设有连通所述容纳腔和外界的通孔,所述电极组件设置于所述容纳腔,所述穿极耳装置用于引导所述电极组件的极耳部从所述通孔伸出;所述穿极耳装置包括:导向件,用于穿入所述通孔;支撑机构,与所述导向件连接,用于固定所述导向件的第一端;其中,所述导向件用于伸入所述容纳腔,并引导所述极耳部经过所述通孔伸出所述容纳腔。
- 根据权利要求1所述的穿极耳装置,其中,所述支撑机构设置成用于驱动所述导向件偏转,使得所述导向件的延伸方向与所述预设装配方向呈夹角设置,以倾斜引导所述极耳部经过所述通孔伸出所述容纳腔。
- 根据权利要求2所述的穿极耳装置,其中,所述导向件的延伸方向与所述极耳部的延伸方向之间呈夹角设置;所述极耳部的延伸方向设置成与所述预设装配方向呈夹角设置。
- 根据权利要求3所述的穿极耳装置,其中,所述极耳部具有彼此相背的第一侧面和第二侧面,所述极耳部相对于所述预设装配方向往所述第一侧面所在一侧倾斜;所述导向件的所述第二端相对于所述第一端往所述第一侧面所在一侧倾斜,并在所述第一侧面所在一侧接触所述极耳部。
- 根据权利要求4所述的穿极耳装置,其中,以所述极耳部为分界,所述导向件设置成从所述第二侧面所在一侧倾斜延伸至所述第一侧面,并在所述极耳部的第一侧面所在一侧接触所述极耳部。
- 根据权利要求2所述的穿极耳装置,其中,所述支撑机构包括基座、翻转驱动电机和夹持机构,所述夹持机构设置于所述基座,所述翻转驱动电机设置于所述基座,且与所述夹持机构传动连接;所述夹持机构夹持所述导向件,所述翻转驱动电机用于驱动所述夹持机构转动,以带动所述导向件偏转。
- 根据权利要求6所述的穿极耳装置,其中,所述夹持机构包括转动座和夹持块,所述转动座包括连接部、延伸部以及限位部,所述连接部和所述限位部设置于所述延伸部的两端,且往所述延伸部的同一侧方向延伸,所述限位部和所述连接部的延伸方向与所述延伸部的延伸方向彼此垂直;所述连接部可转动地连接所述基座,所述夹持块设置于所述延伸部的同一侧,且位于所述连接部和所述限位部之间;在所述壳体套入所述电极组件的过程中,所述延伸部的部分、所述夹持块以及所述限位部与所述壳体的顶部相对设置;在所述限位部和所述连接部的延伸方向上,所述夹持块的高度低于所述限位部的高度;所述夹持块用于夹持所述导向件。
- 根据权利要求1至7中任一项所述的穿极耳装置,其中,所述导向件呈片状设置,所述导向件的一主表面用于供所述极耳部搭接。
- 根据权利要求1至7中任一项所述的穿极耳装置,其中,所述支撑机构固定所述导向件的第一端,使得所述导向件的第二端悬空。
- 根据权利要求1至7中任一项所述的穿极耳装置,其中,所述壳体套入所述电极组件的过程包括第一阶段;在所述第一阶段,所述支撑机构设置成能够与所述壳体一同相对于所述电极组件运动;所述导向件用于在所述第一阶段接触所述极耳部并允许所述极耳部在所述导向件上滑动,使得所述极耳部搭接在所述导向件上。
- 根据权利要求10所述的穿极耳装置,其中,所述壳体套入所述电极组件的过程包括位于所述第一阶段之后的第二阶段;在所述第二阶段,所述支撑机构设置成能够与所述壳体往彼此远离的方向相对运动,使得所述导向件与所述壳体彼此远离;在所述第二阶段,所述导向件设置成与所述极耳部保持接触且相对静止,进而在所述壳体相对远离的过程中引导所述极耳部经过所述通孔伸出所述容纳腔。
- 一种电池的组装设备,其中,包括:入壳装置及如权利要求1-11任一项所述的穿极耳装置,所述入壳装置用于将所述电极组件从所述壳体的开口端装入设置所述壳体;所述入壳装置包括壳体固定机构和承载组件,所述壳体固定机构用于固定所述壳体,所述承载组件用于承载所述电极组件;其中,所述壳体固定机构和所述穿极耳装置能够相对于所述承载组件移动,以对应远离或靠近所述承载组件;所述导向件设置成其第二端能够穿过所述通孔内并延伸至所述容纳腔内;所述壳体固定机构用于将所述壳体套入所述电极组件;所述导向件用于在所述容纳腔内接触所述极耳部,使得所述极耳部 搭接在所述导向件上,以引导所述极耳部经过所述通孔并伸出所述容纳腔。
- 根据权利要求12所述的组装设备,其中,所述组装设备包括极耳焊接装置、极柱焊接装置和底盖焊接装置;其中,所述极耳焊接装置用于将所述电极组件的多个极耳片焊接形成所述极耳部;所述极柱焊接装置用于将穿过所述通孔的所述极耳部与所述壳体的极柱背离所述容纳腔的一侧焊接;所述底盖焊接装置用于将底盖与所述壳体的开口端焊接。
- 一种电池的装配方法,其中,所述电池包括壳体和电极组件;所述壳体具有容纳腔,所述壳体上开设有连通所述容纳腔和外界的通孔,所述电极组件设置于所述容纳腔,所述穿极耳装置用于引导所述电极组件的极耳部从所述通孔伸出;所述装配方法包括:控制所述导向件经所述通孔穿入所述容纳腔内,并控制所述壳体套入所述电极组件;在所述壳体套入所述电极组件的过程中,控制所述导向件接触所述极耳部,使得所述极耳部搭接在所述导向件上,以引导所述极耳部经过所述通孔并伸出所述容纳腔。
- 根据权利要求14所述的装配方法,其中,所述控制所述导向件接触所述极耳部,使得所述极耳部搭接在所述导向件上,包括:在第一阶段,控制支撑机构与所述壳体一同相对于所述电极组件运动,以带动所述导向件在所述第一阶段接触所述极耳部,使得所述极耳部搭接在所述导向件上;在第二阶段,控制所述支撑机构与所述壳体往彼此远离的方向相对运动,使得所述导向件与所述壳体彼此远离,且控制所述支撑机构使得所述导向件与所述极耳部保持接触且相对静止,进而在所述壳体相对远离的过程中引导所述极耳部经过所述通孔并伸出所述容纳腔。
- 根据权利要求14所述的装配方法,其中,所述控制所述导向件经所述通孔穿入所述容纳腔内,包括:控制支撑机构驱动所述导向件偏转,使得所述导向件的延伸方向与所述预设装配方向呈夹角设置;控制所述支撑机构使得所述导向件在偏转状态经所述通孔穿入所述容纳腔内。
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| KR1020267012140A KR20260074741A (ko) | 2023-11-30 | 2024-05-31 | 배터리용 탭 관통 장치, 조립 설비 및 조립 방법 |
| EP24895512.2A EP4760851A1 (en) | 2023-11-30 | 2024-05-31 | Tab threading device for battery, and assembly apparatus and assembly method |
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| CN202311643699.9 | 2023-11-30 | ||
| CN202311643699.9A CN120073020A (zh) | 2023-11-30 | 2023-11-30 | 电池的穿极耳装置、组装设备和装配方法 |
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Citations (6)
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|---|---|---|---|---|
| CN101635335A (zh) * | 2008-07-25 | 2010-01-27 | 深圳市比克电池有限公司 | 圆柱电池卷芯入壳机 |
| CN207967186U (zh) * | 2018-03-07 | 2018-10-12 | 无锡奥特维智能装备有限公司 | 组装电芯和壳体的设备 |
| CN211404612U (zh) * | 2020-03-06 | 2020-09-01 | 江苏联赢激光有限公司 | 一种软包模组入汇流排装置 |
| CN216213726U (zh) * | 2021-09-30 | 2022-04-05 | 宁德时代新能源科技股份有限公司 | 电池单体、电池、用电装置以及电池单体的制造设备 |
| CN216213956U (zh) * | 2021-09-13 | 2022-04-05 | 欣旺达电动汽车电池有限公司 | 绝缘隔板组件、电池模组及电池包 |
| CN219626705U (zh) * | 2023-02-07 | 2023-09-01 | 深圳市圣瀚宇自动化设备有限公司 | 全极耳圆柱电池全自动贴胶入壳机 |
-
2023
- 2023-11-30 CN CN202311643699.9A patent/CN120073020A/zh active Pending
-
2024
- 2024-05-31 EP EP24895512.2A patent/EP4760851A1/en active Pending
- 2024-05-31 WO PCT/CN2024/096835 patent/WO2025112403A1/zh active Pending
- 2024-05-31 KR KR1020267012140A patent/KR20260074741A/ko active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101635335A (zh) * | 2008-07-25 | 2010-01-27 | 深圳市比克电池有限公司 | 圆柱电池卷芯入壳机 |
| CN207967186U (zh) * | 2018-03-07 | 2018-10-12 | 无锡奥特维智能装备有限公司 | 组装电芯和壳体的设备 |
| CN211404612U (zh) * | 2020-03-06 | 2020-09-01 | 江苏联赢激光有限公司 | 一种软包模组入汇流排装置 |
| CN216213956U (zh) * | 2021-09-13 | 2022-04-05 | 欣旺达电动汽车电池有限公司 | 绝缘隔板组件、电池模组及电池包 |
| CN216213726U (zh) * | 2021-09-30 | 2022-04-05 | 宁德时代新能源科技股份有限公司 | 电池单体、电池、用电装置以及电池单体的制造设备 |
| CN219626705U (zh) * | 2023-02-07 | 2023-09-01 | 深圳市圣瀚宇自动化设备有限公司 | 全极耳圆柱电池全自动贴胶入壳机 |
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| Publication number | Publication date |
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| KR20260074741A (ko) | 2026-05-26 |
| EP4760851A1 (en) | 2026-06-17 |
| CN120073020A (zh) | 2025-05-30 |
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