Battery assembly method and tab piercing device

Abstract

The present application discloses a battery assembly method and a lug-piercing device. The assembly method includes: controlling a moving device and a toggle assembly of the lug-piercing device to be in a preparation position, wherein the toggle assembly includes a guide member, and the moving device is used to drive the guide member, the battery shell and the electrode assembly to move relative to each other, the shell has a receiving cavity, and a through hole connecting the receiving cavity and the outside is opened on the shell, the electrode assembly has a lug portion, and the guide member can extend into the through hole to contact the lug portion; controlling the toggle assembly and the moving device to move synchronously, so that in the process of the moving device changing the relative position of the shell, the electrode assembly and the guide member, the guide member rotates in the receiving cavity to change the bending direction of the lug portion, thereby causing the lug portion to extend out of the receiving cavity through the through hole. Through the above embodiment, the working stability and reliability of the movement process can be effectively improved, the difficulty of battery assembly can be effectively reduced, and the assembly efficiency and yield rate of the battery can be effectively improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery assembly method and a tab piercing device. Background Art

[0002] Energy conservation and emission reduction are key to sustainable development, which in turn promotes the adjustment of energy structure and drives the development and application of battery technology. The key to the development of battery technology lies in electrochemical energy storage technology. Due to its advantages such as high energy density, good cycle life, high operating voltage, environmental friendliness, and low self-discharge, it has been widely used in portable electronics, electric vehicles, and energy storage systems.

[0003] The battery's tabs are the metal conductors that lead the positive and negative electrodes from the cell out of the casing. Therefore, during battery assembly, these tabs need to be extended outside the casing to serve as contact points during charging and discharging. However, during assembly, when the battery cell is assembled into the casing, the tabs tend to bend inside the casing and become unable to extend outside. This complicates the battery assembly process and results in a low battery yield. Summary of the Invention

[0004] The main purpose of this application is to provide a battery assembly method and a tab piercing device, aiming to solve the above-mentioned technical problems existing in the prior art.

[0005] To solve the above problems, the present application provides a battery assembly method, which is performed on a piercing lug device, and the assembly method includes: controlling a moving device and a toggle assembly of the piercing lug device to be in a preparation position, wherein the toggle assembly includes a guide member, and the moving device is used to drive the guide member, the battery shell and the electrode assembly to move relative to each other, the shell has a accommodating cavity, and a through hole connecting the accommodating cavity and the outside world is opened on the shell, the electrode assembly has a lug portion, and the guide member can extend into the through hole and contact the lug portion; controlling the toggle assembly and the moving device to move synchronously, so that in the process of the moving device changing the relative positions of the shell, the electrode assembly and the guide member, the guide member rotates in the accommodating cavity to change the bending direction of the lug portion, thereby causing the lug portion to extend out of the accommodating cavity through the through hole.

[0006] Through the above-mentioned embodiment, the movement of the toggle assembly and the moving device is controlled so that the pole ear portion extends out of the accommodating cavity through the through hole. Under the premise of not affecting or damaging the shell and the pole ear portion, the pole ear portion can be automatically guided to smoothly penetrate the through hole so that the pole ear portion can smoothly extend out of the shell. In addition, the toggle assembly and the moving device move synchronously, so that in the process of the mobile device changing the relative positions of the shell, the electrode assembly and the guide member, the guide member rotates in the accommodating cavity to change the bending direction of the pole ear portion, which can effectively improve the working stability and reliability of the movement process, effectively reduce the difficulty of battery assembly, and effectively improve the assembly efficiency and yield rate of the battery.

[0007] In some embodiments, the moving device includes a carrying component and a moving component, the carrying component is used to drive the electrode assembly to move, and the moving component is used to drive the shell and the guide member to move relative to each other. The step of controlling the synchronous movement of the toggle component and the moving device includes: using the virtual axis to control the synchronous movement of the transmission mechanism of the carrying component, the transmission mechanism of the moving component and the transmission mechanism of the toggle component.

[0008] Therefore, the use of virtual axes facilitates the synchronous movement of the corresponding transmission mechanisms, improves the reliability and accuracy of the movements of the load-bearing components, moving components and toggle components, thereby improving the smoothness of the entire ear-piercing process. By introducing virtual axes, the total number of axes that need to be controlled can be reduced, the debugging time can be reduced, and the production efficiency can be improved.

[0009] In some embodiments, the step of using a virtual axis to control the synchronous movement of the transmission mechanism of the carrying component, the transmission mechanism of the moving component and the transmission mechanism of the toggle component includes: coupling the virtual axis and the transmission mechanism of the moving component, and coupling the virtual axis and the transmission mechanism of the toggle component; performing linear interpolation on the transmission mechanism corresponding to the carrying component through the virtual axis to obtain an interpolation path; and controlling the synchronous movement of the transmission mechanism of the carrying component, the transmission mechanism of the moving component and the transmission mechanism of the toggle component according to the interpolation path.

[0010] Therefore, the transmission mechanism of the moving component and the transmission mechanism corresponding to the toggle component are coupled through the virtual axis, and the transmission mechanism corresponding to the carrying component is linearly interpolated through the virtual axis to obtain an interpolation path, thereby realizing synchronous movement of the transmission mechanism, which can further improve the reliability and accuracy of the motion control between the various components, and further improve the smoothness and production efficiency of the entire ear insertion process.

[0011] In some embodiments, the step of controlling the synchronous movement of the transmission mechanism of the carrying component, the transmission mechanism of the moving component and the transmission mechanism of the toggle component according to the interpolation path includes: synchronously controlling the transmission mechanism of the carrying component to drive the electrode component to move along a straight line path, controlling the transmission mechanism of the moving component to drive the shell and the guide member to move in opposite directions on the straight line path, and controlling the transmission mechanism of the toggle component to drive the guide member to rotate.

[0012] Therefore, the transmission mechanism of the supporting component is controlled according to the interpolation path to drive the electrode component to move along a straight path, and the transmission mechanism of the moving component is controlled to drive the shell and the guide to move in opposite directions on a straight path, thereby simplifying the moving paths of each component, improving the reliability and accuracy of the motion control between each component, and improving the smoothness and production efficiency of the entire ear insertion process.

[0013] In some embodiments, the interpolation path includes a first interpolation path and a second interpolation path; the steps of synchronously controlling the transmission mechanism of the bearing assembly to drive the electrode assembly to move along a straight path, controlling the transmission mechanism of the moving assembly to drive the shell and the guide member to move away from each other on the straight path, and controlling the transmission mechanism of the toggle assembly to drive the guide member to rotate according to the interpolation path include: synchronously controlling the transmission mechanism of the bearing assembly to drive the electrode assembly to move along the straight path according to the first interpolation path, controlling the transmission mechanism of the moving assembly to drive the shell and the guide member to move away from each other on the straight path, and controlling the transmission mechanism of the toggle assembly to drive the guide member to rotate until the pole ear portion extends along the straight path in the accommodating cavity; synchronously controlling the guide member to keep the pole ear portion extending along the straight path according to the second interpolation path, controlling the transmission mechanism of the moving assembly to drive the shell and the guide member to move away from each other on the straight path, and controlling the transmission mechanism of the bearing assembly to drive the electrode assembly to move along the straight path until the pole ear portion passes through the through hole and extends out of the accommodating cavity.

[0014] Therefore, the interpolation path includes a first interpolation path and a second interpolation path. The first interpolation path can be used to perform the first stage of motion control on the transmission mechanism of the carrying component, the transmission mechanism of the toggle component, and the transmission mechanism of the mobile component. The second interpolation path can be used to perform the second stage of motion control on the transmission mechanism of the carrying component, the transmission mechanism of the toggle component, and the transmission mechanism of the mobile component. This can further improve the reliability and accuracy of the motion control between the components, improve the smoothness of the entire ear piercing process, and improve production efficiency.

[0015] In some embodiments, the assembly method further includes: decoupling the virtual axis from the transmission mechanism of the moving component and the transmission mechanism of the toggle component; and controlling the transmission mechanism of the moving component, the transmission mechanism of the toggle component and the transmission mechanism of the bearing component to reset in the decoupled state.

[0016] Therefore, by first decoupling the transmission mechanism and the virtual shaft of each component, each transmission mechanism can be quickly reset.

[0017] In some embodiments, before the step of controlling the moving device and the toggle assembly to be in the preparation station, the assembly method includes: obtaining the bending direction of the pole ear portion; and adjusting the deflection direction of the guide member according to the bending direction.

[0018] Therefore, by obtaining the bending direction of the tab portion and adjusting the deflection direction of the guide member, the reliability of the tab deflection adjustment can be improved, and the smoothness and production efficiency of the entire tab insertion process can be improved.

[0019] In some embodiments, the step of obtaining the bending direction of the pole ear portion includes: when the moving device and the toggle assembly are in the initial position, determining whether the shell and the electrode assembly are in the work station; and obtaining the bending direction of the pole ear portion in response to whether the shell and the electrode assembly are in the work station.

[0020] Therefore, after determining whether the shell and the electrode assembly are at the work station, the bending direction of the tab portion is obtained, which can make the entire process of inserting the tab equipment more reliable and improve the overall work efficiency.

[0021] In some embodiments, the step of performing linear interpolation on the transmission mechanism corresponding to the bearing assembly through the virtual axis includes: performing linear interpolation on the transmission mechanism corresponding to the bearing assembly through the virtual axis when the virtual axis is at the origin.

[0022] Therefore, after the coupling of the virtual axis and the corresponding transmission mechanism is completed, and when the virtual axis is at the origin, linear interpolation is performed on the transmission mechanism corresponding to the supporting component, so that the final interpolation path can be more in line with actual needs, thereby improving the smoothness of the operation of the ear-piercing equipment and the overall work efficiency.

[0023] To solve the above problems, the present application provides a tab-piercing device, which includes: a moving device, a toggle assembly and a controller, wherein the moving device is used to drive the battery shell and the electrode assembly to move relative to each other, wherein the shell has a accommodating cavity, and a through hole connecting the accommodating cavity and the outside world is opened on the shell, and the electrode assembly has a tab portion; the toggle assembly includes a guide member, and the guide member can extend into the through hole and contact the tab portion, wherein the moving device is also used to drive the guide member, the shell and the electrode assembly to move relative to each other; the controller is used to execute the assembly method as described above, so that the tab portion extends out of the accommodating cavity through the through hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 is a schematic diagram of the disassembled structure of a battery according to one or more embodiments provided in this application;

[0026] Figure 2 is a schematic structural diagram of a tab-piercing device according to one or more embodiments provided in this application;

[0027] Figure 3 This is a structural schematic diagram of a guide member inserted into a housing according to one or more embodiments provided by the present application;

[0028] Figure 4 yes Figure 3 Schematic diagram of the cross-section structure of the structure shown along the AA direction;

[0029] Figure 5 is a schematic flow chart of a battery assembly method according to one or more embodiments provided in this application;

[0030] Figure 6 is a schematic diagram of a flow chart of control according to an interpolation path in an assembly method according to one or more embodiments provided in the present application;

[0031] Figure 7 yes Figure 5 FIG. 1 is a flow chart showing the process before step S501 in the assembly method shown in FIG.

[0032] Reference numerals: tab-piercing device 10; moving device 100; moving assembly 110; carrying assembly 120; toggle assembly 200; guide member 210; battery 20; housing 21; accommodating cavity 22; through hole 23; electrode assembly 24; tab portion 25; bottom cover 26; straight path F. DETAILED DESCRIPTION

[0033] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0035] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0036] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0037] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0038] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0039] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0040] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0041] With the advancement of battery technology, batteries are being used in a growing number of fields and are gradually replacing traditional fossil fuels in the automotive powertrain sector. Batteries store chemical energy and controllably convert it into electrical energy. In recyclable batteries, after discharge, the active materials can be activated by recharging for continued use.

[0042] A battery is a device that converts chemical energy into electrical energy. It contains a cup, tank, or other container, or a portion of a composite container, that contains an electrolyte solution and metal electrodes to generate an electric current. With the advancement of technology, batteries, with their advantages of portability, ease of charge and discharge, and long-term stable power supply, have become widely used in automobiles, home appliances, aerospace, and other fields.

[0043] The battery's tabs are the metal conductors that lead the positive and negative electrodes from the cell out of the casing. Therefore, during battery assembly, these tabs need to be extended outside the casing to serve as contact points during charging and discharging. However, during assembly, when the battery cell is assembled into the casing, the tabs tend to bend inside the casing and become unable to extend outside. This complicates the battery assembly process and results in a low battery yield.

[0044] In order to achieve accurate insertion of the electrode assembly into the shell and smoothly extend the pole ear from inside the shell to outside the shell, the pole ear can be guided when the electrode assembly is inserted into the shell so that the pole ear can smoothly extend from inside the shell to outside the shell.

[0045] Based on the above considerations, the present application provides a battery assembly method and a tab insertion device. In the process of changing the relative positions of the shell, the electrode assembly and the guide member by a moving device, the guide member of the assembly is toggled to change the bending direction of the tab portion, thereby guiding the tab portion to pass through the shell through the through hole on the shell. This design enables the tab portion of the battery to be guided through the through hole when the electrode assembly of the battery is inserted into the shell, which can effectively improve the working stability and reliability of the movement process, effectively reduce the difficulty of battery assembly, and effectively improve the assembly efficiency and yield rate of the battery.

[0046] The following is an exemplary description of a battery.

[0047] like Figure 1 As shown, Figure 1 It is a schematic diagram of the disassembled structure of a battery according to one or more embodiments provided in this application.

[0048] The battery 20 may be an energy storage device, which may include an energy storage container, an energy storage cabinet, and the like.

[0049] In some embodiments, the battery 20 may include a housing 21, a bottom cover 26, and an electrode assembly 24. The battery 20 may also include other functional components.

[0050] In some embodiments, the housing 21 is used to encapsulate components such as the electrode assembly 24 and the electrolyte.

[0051] The housing 21 may have an open end. A pole may be provided on a wall of the housing 21 opposite the open end. The pole may have a through-hole 23. The housing 21 and the bottom cover 26 may be connected to form a receiving cavity 22 that communicates with the through-hole 23. The active material coating portion of the electrode assembly 24 may be disposed within the housing 21. The tab portion 25 of the electrode assembly 24 passes through the through-hole 23 and is connected to the side of the pole facing away from the receiving cavity 22.

[0052] The bottom cover 26 covers the open end of the housing 21 to isolate the internal environment of the battery 20 from the external environment. The shape of the bottom cover 26 can be adapted to the shape of the open end to fit the housing 21. Optionally, the bottom cover 26 can be made of a material with a certain degree of hardness and strength (such as aluminum alloy). This makes the bottom cover 26 less likely to deform when subjected to compression or collision, thus providing the battery 20 with greater structural strength and improved safety.

[0053] In some embodiments, components such as terminals may be provided on the top of the housing 21. The terminals may be used to electrically connect to the electrode assembly 24 for inputting or outputting electrical energy from or to the battery 20. In some embodiments, the housing 21 may also be provided with a pressure relief mechanism for relieving internal pressure when the internal pressure or temperature of the battery 20 reaches a threshold.

[0054] The housing 21 is a component used to cooperate with the bottom cover 26 to form the internal environment of the battery 20, wherein the formed internal environment can be used to accommodate the electrode assembly 24, electrolyte and other components. The housing 21 and the bottom cover 26 can be independent components, and an open end can be provided on the housing 21, and the internal environment of the battery 20 is formed by covering the open end with the bottom cover 26 at the open end. In other embodiments, the shape of the housing 21 can be determined according to the specific shape and size of the electrode assembly 24. The material of the housing 21 can be various, for example, including but not limited to copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.

[0055] The electrode assembly 24 is a component where electrochemical reactions occur in the battery 20. One or more electrode assemblies 24 may be contained within the housing 21.

[0056] In some embodiments, the electrode assembly 24 is provided with a tab 25 that conducts current from the electrode assembly 24. The tab 25 includes a positive tab 25 and a negative tab 25. The positive tab 25 and the negative tab 25 can be located together at one end of the main body or separately at opposite ends of the main body. During the charge and discharge process of the battery 20, the positive and negative active materials react with the electrolyte, and the tab 25 connects to the electrode column to form a current loop.

[0057] In some embodiments, electrode assembly 24 includes a positive electrode, a negative electrode, and a separator. During the charge and discharge process of battery 20, active ions (e.g., lithium ions) are intercalated and released between the positive and negative electrodes. The separator is positioned between the positive and negative electrodes to prevent short circuits between the positive and negative electrodes while allowing the active ions to pass through.

[0058] In some embodiments, the positive electrode may be a positive electrode sheet, which 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.

[0059] As an example, the positive electrode current collector has two surfaces facing each other in its thickness direction, and the positive electrode active material is provided on either or both of the two facing surfaces of the positive electrode current collector.

[0060] As an example, the positive electrode current collector may be a metal foil or a composite current collector. For example, as the metal foil, aluminum or stainless steel with a silver surface treatment, stainless steel, copper, aluminum, nickel, carbon electrode, carbon, nickel or titanium, etc. may be used. The composite current collector may include a polymer material base layer 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.).

[0061] As an example, 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. However, the present application is not limited to these materials, and other conventional materials that can be used as positive electrode active materials for the battery 20 may also be used. These positive electrode active materials may be used alone or in combination of two or more. Examples of lithium-containing phosphates may include, but are not limited to, at least one of lithium iron phosphate, a composite material of lithium iron phosphate and carbon, lithium manganese phosphate, a composite material of lithium manganese phosphate and carbon, lithium iron manganese phosphate, and a composite material of lithium iron manganese phosphate and carbon. Examples of lithium transition metal oxides may include, but are not limited to, at least one of lithium cobalt oxide, lithium nickel oxide, lithium manganese oxide, lithium nickel cobalt oxide, lithium manganese cobalt oxide, lithium nickel manganese oxide, lithium nickel cobalt manganese oxide, lithium nickel cobalt aluminum oxide, and their modified compounds.

[0062] In some embodiments, the negative electrode may be a negative electrode sheet, and the negative electrode sheet may include a negative electrode current collector.

[0063] As an example, the negative electrode current collector can be a metal foil, a metal foam, or a composite current collector. For example, as the metal foil, aluminum or stainless steel with a silver surface treatment, stainless steel, copper, aluminum, nickel, carbon electrode, carbon, nickel, or titanium can be used. The metal foam can be nickel foam, copper foam, aluminum foam, alloy foam, or carbon foam. The composite current collector can include a polymer material base layer 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.).

[0064] As an example, 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.

[0065] As an example, the negative electrode current collector has two surfaces facing each other in its thickness direction, and the negative electrode active material is provided on either or both of the two facing surfaces of the negative electrode current collector.

[0066] As an example, the negative electrode active material may adopt the negative electrode active material for battery 20 that is well known in the art. As an example, 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, lithium titanate, etc. The silicon-based material can 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 can be selected from at least one of elemental tin, tin oxide compounds, and tin alloys. However, the present application is not limited to these materials, and other traditional materials that can be used as negative electrode active materials for battery 20 can also be used. These negative electrode active materials can be used alone or in combination of two or more.

[0067] In some embodiments, the material of the positive electrode current collector may be aluminum, and the material of the negative electrode current collector may be copper.

[0068] In some embodiments, the separator is a membrane. The present application has no particular limitation on the type of the membrane, and any known porous membrane with good chemical and mechanical stability can be selected.

[0069] As an example, the primary 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 particular limitation. When the separator is a multi-layer composite film, the materials of each layer can be the same or different, without particular limitation. The separator can be a separate component positioned between the positive and negative electrodes, or it can be attached to the surfaces of the positive and negative electrodes.

[0070] In some embodiments, the separator is a solid electrolyte, which is disposed between the positive electrode and the negative electrode and serves to transport ions and isolate the positive and negative electrodes.

[0071] In some embodiments, battery 20 further includes an electrolyte, which acts as a conductive medium between the positive and negative electrodes. The present application does not specifically limit the type of electrolyte, and the electrolyte may be selected based on needs. The electrolyte may be liquid, gel, or solid.

[0072] The liquid electrolyte includes an electrolyte salt and a solvent.

[0073] In some embodiments, the electrolyte salt may 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.

[0074] In some embodiments, the solvent can be selected from at least one of ethylene carbonate, propylene carbonate, ethyl methyl carbonate, diethyl carbonate, dimethyl carbonate, dipropyl carbonate, methylpropyl carbonate, ethylpropyl 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 an ether solvent. 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.

[0075] Among them, the gel electrolyte includes a skeleton network with a polymer as the electrolyte, combined with an ionic liquid-lithium salt.

[0076] Among them, solid electrolytes include polymer solid electrolytes, inorganic solid electrolytes, and composite solid electrolytes.

[0077] As an example, 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, or the like.

[0078] As an example, 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.

[0079] As an example, a composite solid electrolyte is formed by adding an inorganic solid electrolyte filler to a polymer solid electrolyte.

[0080] In some embodiments, the electrode assembly 24 is a wound structure in which the positive electrode sheet and the negative electrode sheet are wound into a wound structure.

[0081] In some embodiments, the electrode assembly 24 and the housing 21 are assembled by the tab-piercing device 10 to form the battery 20 .

[0082] For reference Figures 2 to 4 , Figure 2 is a schematic structural diagram of a tab piercing device 10 according to one or more embodiments provided in this application; Figure 3 is a structural diagram of a guide member 210 inserted into a housing 21 according to one or more embodiments provided in the present application; Figure 4 yes Figure 3 Schematic diagram of the cross-section structure along the AA direction.

[0083] The present application hereinafter exemplifies a tab piercing device 10 of a battery 20 , which can be used to install an electrode assembly 24 into the shell 21 from an open end thereof.

[0084] The electrode ear piercing device 10 includes a moving device 100 and a toggle assembly 200, wherein the toggle assembly 200 includes a guide member 210, which can extend into the through hole 23 and contact the electrode ear portion 25, wherein the moving device 100 is also used to drive the guide member 210, the shell 21 and the electrode assembly 24 to move relative to each other, and the guide member 210 rotates in the accommodating cavity 22 to change the bending direction of the electrode ear portion 25, thereby allowing the electrode ear portion 25 to extend out of the accommodating cavity 22 through the through hole 23.

[0085] The mobile device 100 can be connected to the shell 21, the electrode assembly 24, and the toggle assembly 200 respectively. The mobile device 100 can be used to drive the shell 21, the toggle assembly 200 and / or the electrode assembly 24 to move, thereby causing the guide member 210, the shell 21 and the electrode assembly 24 to move relative to each other. For example, the guide member 210 and the electrode assembly 24 do not move, and the mobile device 100 drives the shell 21 to move relative to the guide member 210 and the electrode assembly 24 at the same time; or the electrode assembly 24 does not move, and the mobile device 100 drives the shell 21 and the guide member 210 to move; or the shell 21 does not move, and the mobile device 100 drives the guide member 210 and the electrode assembly 24 to move; or the mobile device 100 drives the shell 21, the guide member 210 and the electrode assembly 24 to move at the same time. The toggle assembly 200 may also include a transmission mechanism, which is connected to the guide member 210 and can be used to drive the guide member 210 to rotate. The guide member 210 can be in the form of a sheet. After extending into the through hole 23, the guide member 210 contacts the pole ear portion 25, so that the pole ear portion 25 can be overlapped on the guide member 210, so that the deflection angle of the pole ear portion 25 can be adjusted by rotating the guide member 210, and then during the relative movement between the shell 21, the guide member 210 and the electrode assembly 24, the pole ear portion 25 can be extended out of the accommodating cavity 22.

[0086] In some embodiments, the mobile device 100 may include a carrying assembly 120 and a moving assembly 110. The carrying assembly 120 is used to drive the electrode assembly 24 to move, and the moving assembly 110 is used to drive the housing 21 and the guide member 210 to move relative to each other. The carrying assembly 120 can be used to carry the electrode assembly 24, and the carrying assembly 120 can drive the electrode assembly 24 to move up and down along the straight path F through a transmission mechanism. The moving assembly 110 can fix the housing 21 and drive the housing 21 to move up and down along the straight path F through a transmission mechanism, and / or the moving assembly 110 can be connected to the toggle assembly 200 and drive the toggle assembly 200 to move up and down along the straight path F through a transmission mechanism, thereby driving the guide member 210, the housing 21, and the electrode assembly 24 to move relative to each other through the mobile device 100.

[0087] The straight path F may be a moving path extending in the direction of gravity. In this embodiment, the electrode assembly 24 carried by the carrying assembly 120 may be located below the shell 21 in the direction of gravity. The moving device 100 drives the guide member 210, the shell 21, and the electrode assembly 24 to move relative to each other, which may include the following implementations: the electrode assembly 24 and the guide member 210 remain stationary on the straight path F, and the moving assembly 110 drives the shell 21 to move downward toward the electrode assembly 24; or the electrode assembly 24 remains stationary on the straight path F, and the moving assembly 110 drives the shell 21 to move downward toward the electrode assembly 24. The movable component 110 drives the shell 21 to move downward, and at the same time drives the guide component 210 to move upward; or the shell 21 remains stationary on the straight path F, the movable component 110 drives the guide component 210 to move upward, and the carrying component 120 drives the electrode assembly 24 to move upward; or the guide component 210 remains stationary on the straight path F, the movable component 110 drives the shell 21 to move downward, and the carrying component 120 drives the electrode assembly 24 to move upward; or the movable component 110 drives the shell 21 to move downward, and at the same time drives the guide component 210 to move upward, and the carrying component 120 drives the electrode assembly 24 to move upward.

[0088] Among them, the ear-piercing device 10 provided in the present application also includes a controller, which can be used to control the mobile device 100 and the toggle assembly 200. Specifically, the controller can be used to execute the assembly method of the battery 20 as described in any of the following embodiments, so that the ear portion 25 extends out of the accommodating cavity 22 through the through hole 23 on the shell 21.

[0089] Combine Figure 5 , Figure 5 1 is a flow chart of a method for assembling a battery 20 according to one or more embodiments of the present application, specifically comprising the following steps S501 to S502.

[0090] Step S501: Control the moving device and the toggle assembly of the tab piercing device to be in a preparation position.

[0091] The toggle assembly 200 includes a guide member 210. The mobile device 100 is used to drive the guide member 210, the housing 21 of the battery 20, and the electrode assembly 24 to move relative to each other. The housing 21 has a receiving cavity 22. The housing 21 has a through hole 23 connecting the receiving cavity 22 with the outside world. The electrode assembly 24 has a pole ear portion 25. The guide member 210 can extend into the through hole 23 and contact the pole ear portion 25. The preparation position can be set according to actual conditions. For example, the preparation position can be the position where the guide member 210 of the toggle assembly 200 has just extended into the through hole 23 of the housing 21; or the preparation position can be the position where the guide member 210 of the toggle assembly 200 has just extended into the housing 21 and just contacted the pole ear portion 25, etc. Before controlling the mobile device 100 and the toggle assembly 200 to move to the preparation position, the mobile device 100 and the toggle assembly 200 can be located at the initial position and can receive the shell 21 and the electrode assembly 24 at the initial position. After the shell 21 and the electrode assembly 24 are installed, the mobile device 100 and the toggle assembly 200 can be controlled to be at the preparation position.

[0092] Step S502: Control the toggle assembly and the moving device to move synchronously, so that when the moving device changes the relative positions of the shell, the electrode assembly and the guide member, the guide member rotates in the accommodating cavity to change the bending direction of the pole ear portion, thereby allowing the pole ear portion to extend out of the accommodating cavity through the through hole.

[0093] Both the toggle assembly 200 and the mobile device 100 may be provided with a transmission mechanism, and the guide member 210 may be driven to rotate by controlling the transmission mechanism of the toggle assembly 200, and the relative positions of the housing 21, the electrode assembly 24, and the guide member 210 may be changed by controlling the transmission mechanism of the mobile device 100. In this embodiment, the process of the mobile device 100 changing the relative positions of the housing 21, the electrode assembly 24, and the guide member 210 may include: the guide member 210 and the electrode assembly 24 do not move, and the mobile device 100 drives the housing 21 to move relative to the guide member 210 and the electrode assembly 24 simultaneously; or the electrode assembly 24 does not move, and the mobile device 100 drives the housing 21 and the guide member 210 to move; or the housing 21 does not move, and the mobile device 100 drives the guide member 210 and the electrode assembly 24 to move; or the mobile device 100 drives the housing 21, the guide member 210, and the electrode assembly 24 to move simultaneously. Among them, in the process of the mobile device 100 changing the relative positions of the shell 21, the electrode assembly 24 and the guide member 210, the guide member 210 rotates in the accommodating cavity 22 to change the bending direction of the pole ear portion 25. It can be understood that: in the entire process of the mobile device 100 changing the relative positions of the shell 21, the electrode assembly 24 and the guide member 210, the guide member 210 is in a rotating state until the bending direction of the pole ear portion 25 is changed and the pole ear portion 25 extends out of the accommodating cavity 22 through the through hole 23; or in the partial process of the mobile device 100 changing the relative positions of the shell 21, the electrode assembly 24 and the guide member 210, the guide member 210 is in a rotating state to change the bending direction of the pole ear portion 25, and after adjusting the bending direction of the pole ear portion 25 to the preset state, the guide member 210 does not rotate, and it is only necessary to keep the pole ear portion 25 in the preset state.

[0094] Through the above-mentioned embodiment, the movement of the toggle assembly 200 and the mobile device 100 is controlled so that the pole ear portion 25 extends out of the accommodating cavity 22 through the through hole 23. Under the premise of not affecting and damaging the shell 21 and the pole ear portion 25, the pole ear portion 25 can be automatically guided to smoothly penetrate into the through hole 23, so that the pole ear portion 25 can smoothly extend out of the shell 21, and the toggle assembly 200 and the mobile device 100 move synchronously, so that in the process of the mobile device 100 changing the relative positions of the shell 21, the electrode assembly 24 and the guide member 210, the guide member 210 rotates in the accommodating cavity 22 to change the bending direction of the pole ear portion 25, which can effectively improve the working stability and reliability of the movement process, effectively reduce the assembly difficulty of the battery 20, and effectively improve the assembly efficiency and yield rate of the battery 20.

[0095] In some embodiments, the mobile device 100 includes a supporting component 120 and a moving component 110, the supporting component 120 is used to drive the electrode component 24 to move, and the moving component 110 is used to drive the shell 21 and the guide member 210 to move relative to each other. The step of controlling the synchronous movement of the toggle component 200 and the mobile device 100 includes: using a virtual axis to control the synchronous movement of the transmission mechanism of the supporting component 120, the transmission mechanism of the moving component 110 and the transmission mechanism of the toggle component 200.

[0096] The carrying assembly 120 can be used to carry the electrode assembly 24. The carrying assembly 120 can drive the electrode assembly 24 to move along the linear path F via a transmission mechanism. The moving assembly 110 can fix the housing 21 and drive the housing 21 to move along the linear path F via a transmission mechanism, and / or the moving assembly 110 can be connected to the toggle assembly 200 and drive the toggle assembly 200 to move along the linear path F via a transmission mechanism. In this way, the guide member 210, the housing 21, and the electrode assembly 24 can be driven by the moving device 100 to move relative to each other.

[0097] The real axis refers to the motor's actual mechanical axis. The virtual axis is a reference axis calculated through an algorithm that reflects the motor's motion characteristics. Coupled with the real axis, the virtual axis enables real-time dynamic control of the real axis. By controlling the virtual axis to operate according to preset parameters, the real axis can also be controlled to operate according to preset parameters, resulting in different motions for the transmission mechanisms of the load-bearing assembly 120, the moving assembly 110, and the shifting assembly 200. Preset parameters for the real axis may include the position, velocity, and acceleration of the motor's servo axis.

[0098] During the assembly of the battery 20, the transmission mechanism of the supporting component 120, the transmission mechanism of the movable component 110 and the transmission mechanism of the toggle component 200 need to move synchronously. By referring to the virtual axis, it is convenient to realize the synchronous movement of the corresponding transmission mechanisms, thereby improving the reliability and accuracy of the movement of the supporting component 120, the movable component 110 and the toggle component 200, thereby improving the smoothness of the entire ear insertion process, and by introducing the virtual axis, the total number of axes that need to be controlled can be reduced, the debugging time can be reduced, and the production efficiency can be improved.

[0099] Furthermore, the step of using a virtual axis to control the synchronous movement of the transmission mechanism of the carrier assembly 120, the transmission mechanism of the mobile assembly 110, and the transmission mechanism of the toggle assembly 200 includes: coupling the virtual axis with the transmission mechanism of the mobile assembly 110, and coupling the virtual axis with the transmission mechanism of the toggle assembly 200; performing linear interpolation on the corresponding transmission mechanisms of the carrier assembly 120 using the virtual axis to obtain an interpolation path; and controlling the synchronous movement of the transmission mechanisms of the carrier assembly 120, the transmission mechanisms of the mobile assembly 110, and the toggle assembly 200 according to the interpolation path. The virtual axis can be coupled to the transmission mechanism of the mobile assembly 110 via a virtual gear, and coupled to the transmission mechanism of the toggle assembly 200 via a virtual gear. After the virtual axis is coupled to the transmission mechanism of the moving component 110 and the transmission mechanism of the toggle component 200 respectively, the virtual axis is linearly coupled to the transmission mechanism corresponding to the supporting component 120. The interpolation paths thus formed can be associated with the transmission mechanism of the moving component 110, the transmission mechanism of the toggle component 200 and the transmission mechanism corresponding to the supporting component 120 through the virtual axis, so as to facilitate the synchronous movement of the transmission mechanism of the supporting component 120, the transmission mechanism of the moving component 110 and the transmission mechanism of the toggle component 200 according to the interpolation path.

[0100] Therefore, the transmission mechanism of the moving component 110 and the transmission mechanism corresponding to the toggle component 200 are coupled through the virtual axis, and the transmission mechanism corresponding to the supporting component 120 is linearly interpolated through the virtual axis to obtain an interpolation path, thereby realizing synchronous movement of the transmission mechanism, which can further improve the reliability and accuracy of the motion control between the various components, and further improve the smoothness and production efficiency of the entire ear insertion process.

[0101] Furthermore, the step of linearly interpolating the transmission mechanism corresponding to the carrier assembly 120 through the virtual axis includes: when the virtual axis is at the origin, linearly interpolating the transmission mechanism corresponding to the carrier assembly 120 through the virtual axis. After the virtual axis is coupled with the transmission mechanism of the moving assembly 110 and the transmission mechanism of the toggle assembly 200, it can be determined that the coupling result meets the requirements, and then the virtual axis is controlled to return to the origin and the result is confirmed. After confirming that the virtual axis is at the origin, linear interpolation is performed on the transmission mechanism corresponding to the carrier assembly 120 through the virtual axis, so that the final interpolation path can be more in line with actual needs, thereby improving the smoothness of the operation of the piercing lug device 10 and the overall work efficiency.

[0102] In some embodiments, the step of controlling the synchronous movement of the transmission mechanism of the supporting component 120, the transmission mechanism of the moving component 110 and the transmission mechanism of the toggle component 200 according to the interpolation path includes: synchronously controlling the transmission mechanism of the supporting component 120 to drive the electrode component 24 to move along the straight line path F according to the interpolation path, controlling the transmission mechanism of the moving component 110 to drive the shell 21 and the guide member 210 to move in opposite directions on the straight line path F, and controlling the transmission mechanism of the toggle component 200 to drive the guide member 210 to rotate.

[0103] The interpolation path can be one or more, and can be set according to actual conditions. The linear path F can be a movement path extending in the direction of gravity. In this embodiment, the electrode assembly 24 carried by the carrying assembly 120 can be located below the housing 21 in the direction of gravity, and the guide member 210 can also be located above the housing 21 in the direction of gravity. Synchronously controlling the transmission mechanism of the carrying assembly 120 to drive the electrode assembly 24 to move along the straight path F and controlling the transmission mechanism of the moving assembly 110 to drive the shell 21 and the guide member 210 to move in opposite directions on the straight path F according to the interpolation path may include the following implementation methods: the electrode assembly 24 and the guide member 210 are stationary on the straight path F, and the moving assembly 110 drives the shell 21 to move downward toward the electrode assembly 24; or the electrode assembly 24 is stationary on the straight path F, and the moving assembly 110 drives the shell 21 downward and drives the guide member 210 upward at the same time; or the shell 21 is stationary on the straight path F, the moving assembly 110 drives the guide member 210 upward and the carrying assembly 120 drives the electrode assembly 24 upward; or the guide member 210 is stationary on the straight path F, the moving assembly 110 drives the shell 21 downward and the carrying assembly 120 drives the electrode assembly 24 upward; or the moving assembly 110 drives the shell 21 downward and drives the guide member 210 upward at the same time, and the carrying assembly 120 drives the electrode assembly 24 upward.

[0104] Thus, the transmission mechanism of the supporting component 120 is controlled according to the interpolation path to drive the electrode component 24 to move along the straight path F, and the transmission mechanism of the moving component 110 is controlled to drive the shell 21 and the guide member 210 to move in opposite directions on the straight path F, thereby simplifying the moving paths of the respective components, improving the reliability and accuracy of the motion control between the various components, and improving the smoothness and production efficiency of the entire ear piercing process.

[0105] Combine Figure 6 , Figure 6This is a schematic flow diagram illustrating control based on an interpolation path in an assembly method according to one or more embodiments provided herein. In this embodiment, the interpolation path may include a first interpolation path and a second interpolation path. Synchronously controlling the transmission mechanism of the carrier assembly 120 to drive the electrode assembly 24 along a linear path F, controlling the transmission mechanism of the moving assembly 110 to drive the housing 21 and guide member 210 to move in opposite directions along the linear path F, and controlling the transmission mechanism of the shifting assembly 200 to drive the guide member 210 to rotate according to the interpolation path includes the following steps S601 and S602.

[0106] Step S601: Synchronously control the transmission mechanism of the supporting assembly to drive the electrode assembly to move along a straight path according to the first interpolation path, control the transmission mechanism of the moving assembly to drive the shell and the guide member to move in opposite directions on the straight path, and control the transmission mechanism of the toggle assembly to drive the guide member to rotate until the pole ear extends along a straight path in the accommodating cavity.

[0107] According to the first interpolation path, the transmission mechanism of the supporting assembly 120 can drive the electrode assembly 24 to move upward along the straight path F, while simultaneously controlling the transmission mechanism of the movable assembly 110 to drive the housing 21 to move downward along the straight path F according to the first interpolation path; or according to the first interpolation path, the transmission mechanism of the movable assembly 110 can drive the guide member 210 to move upward along the straight path F; or according to the first interpolation path, the transmission mechanism of the movable assembly 110 can drive the guide member 210 to move upward along the straight path F and drive the housing 21 to move downward along the straight path F. During the aforementioned movement process, the guide member 210 remains within the accommodating cavity 22, and the guide member 210 can also continue to rotate during this process to drive the pole ear portion 25 to rotate until the pole ear portion 25 extends along the straight path F within the accommodating cavity 22. The guide member 210 can then stop rotating to allow the pole ear portion 25 to remain extended along the straight path F.

[0108] Step S602: Synchronously control the guide member according to the second interpolation path to keep the pole ear portion extending along the straight path, control the transmission mechanism of the moving component to drive the shell and the guide member to move in opposite directions on the straight path, and control the transmission mechanism of the supporting component to drive the electrode assembly to move along the straight path until the pole ear portion extends out of the accommodating cavity through the through hole.

[0109] The second interpolation path differs from the first interpolation path. After the guide member 210 rotates the tab 25 until it extends along the linear path F within the accommodating cavity 22, the guide member 210 can be controlled to remain stationary or slightly oscillate to maintain the tab 25 extending along the linear path F. While the tab 25 is extending along the linear path F, the transmission mechanism of the movable assembly 110 can be controlled according to the second interpolation path to drive the housing 21 downward along the linear path F; or the transmission mechanism of the movable assembly 110 can be controlled according to the second interpolation path to drive the guide member 210 upward along the linear path F; or the transmission mechanism of the movable assembly 110 can be controlled according to the second interpolation path to drive the guide member 210 upward along the linear path F and the housing 21 downward along the linear path F. Simultaneously, the transmission mechanism of the carrier assembly 120 can be controlled according to the second interpolation path to drive the electrode assembly 24 upward along the linear path F until the tab 25 extends out of the accommodating cavity 22 through the through hole 23.

[0110] Therefore, the interpolation path includes a first interpolation path and a second interpolation path. The first interpolation path can be used to perform the first stage of motion control on the transmission mechanism of the supporting component 120, the transmission mechanism of the toggle component 200, and the transmission mechanism of the moving component 110. The second interpolation path can be used to perform the second stage of motion control on the transmission mechanism of the supporting component 120, the transmission mechanism of the toggle component 200, and the transmission mechanism of the moving component 110. This can further improve the reliability and accuracy of the motion control between the various components, improve the smoothness of the entire ear piercing process, and improve production efficiency.

[0111] Furthermore, the assembly method also includes: decoupling the virtual axis from the transmission mechanism of the moving component 110 and the transmission mechanism of the toggle component 200; and controlling the transmission mechanism of the moving component 110, the transmission mechanism of the toggle component 200 and the transmission mechanism of the supporting component 120 to reset in the decoupled state.

[0112] After the tab portion 25 is extended out of the accommodating cavity 22 through the through hole 23, the entire tab piercing device 10 needs to be reset in order to perform the next tab piercing operation. The reset process has low requirements on the movement accuracy and synchronization between the transmission mechanisms of each component, and the movement differences of the transmission mechanisms between the components during the reset process may be large. Therefore, it is necessary to first decouple the virtual axis from the transmission mechanism of the moving component 110 and the transmission mechanism of the toggle component 200. After the decoupling is completed, the reset operation is performed by controlling the transmission mechanism of the moving component 110, the transmission mechanism of the toggle component 200 and the transmission mechanism of the bearing component 120, so as to facilitate the rapid reset of each transmission mechanism.

[0113] See also Figure 7 , Figure 7 yes Figure 5The flowchart before step S501 in the assembly method shown in FIG. Specifically, the process includes the following steps S701 to S702.

[0114] Step S701: obtaining the bending direction of the tab portion.

[0115] The image of the pole ear portion 25 can be collected by an image collection device, and then the image of the pole ear portion 25 can be analyzed to determine the bending direction of the pole ear portion 25. Figure 4 As shown, the free end of the pole ear portion 25 is inclined to the left relative to the fixed end. In other embodiments, the free end of the pole ear portion 25 may be inclined to the right relative to the fixed end, which may be determined according to actual conditions.

[0116] Step S702: adjusting the deflection direction of the guide member according to the bending direction.

[0117] The deflection direction of the guide member 210 can be understood as: the free end of the guide member 210 is tilted to the left or right relative to the fixed end of the guide member 210. Before the guide member 210 is inserted into the housing 21, the deflection direction of the guide member 210 can be adjusted according to the bending direction, and the guide member 210 is inserted into the housing 21 according to the adjusted deflection direction; or after the guide member 210 is inserted into the housing 21, the deflection direction of the guide member 210 can be adjusted according to the bending direction. Figure 4 For example, when the free end of the pole ear 25 is tilted to the left relative to the fixed end, the free end of the guide 210 can be adjusted to tilt to the left relative to the fixed end of the guide 210; when the free end of the pole ear 25 is tilted to the right relative to the fixed end, the free end of the guide 210 can be adjusted to tilt to the right relative to the fixed end of the guide 210, so that the guide 210 and the pole ear 25 are staggered, which can facilitate the pole ear 25 to overlap on the surface of the guide 210, and then the guide 210 can guide the pole ear 25 during the process of the electrode assembly 24 entering the shell, effectively reducing the assembly difficulty of the battery 20, effectively improving the assembly efficiency and yield of the battery 20, improving the reliability of the pole ear deflection adjustment, and improving the smoothness of the entire pole ear insertion process and production efficiency.

[0118] Furthermore, the step of obtaining the bending direction of the tab portion 25 (step S702) includes: when the mobile device 100 and the toggle assembly 200 are in the initial position, determining whether the housing 21 and the electrode assembly 24 are in the work position; and in response to whether the housing 21 and the electrode assembly 24 are in the work position, obtaining the bending direction of the tab portion 25. The state in which the mobile device 100 and the toggle assembly 200 are in the initial position can be understood as the position in which the mobile device 100 and the toggle assembly 200 have completed the reset operation, at which operations such as the insertion of the housing 21 and the electrode assembly 24 can be performed. When it is determined that the housing 21 and the electrode assembly 24 are in the work position, the step of obtaining the bending direction of the tab portion 25 can be performed. Therefore, after determining whether the housing 21 and the electrode assembly 24 are in the work position, the bending direction of the tab portion 25 is obtained, which can make the entire process of the tab insertion device 10 more reliable and improve overall work efficiency.

[0119] To sum up, the movement of the toggle assembly 200 and the mobile device 100 is controlled so that the pole ear portion 25 extends out of the accommodating cavity 22 through the through hole 23. Under the premise of not affecting or damaging the shell 21 and the pole ear portion 25, the pole ear portion 25 can be automatically guided to smoothly penetrate the through hole 23, so that the pole ear portion 25 can smoothly extend out of the shell 21, and the toggle assembly 200 and the mobile device 100 move synchronously, so that in the process of the mobile device 100 changing the relative positions of the shell 21, the electrode assembly 24 and the guide member 210, the guide member 210 rotates in the accommodating cavity 22 to change the bending direction of the pole ear portion 25, which can effectively improve the working stability and reliability of the movement process, effectively reduce the assembly difficulty of the battery 20, and effectively improve the assembly efficiency and yield of the battery 20.

[0120] The assembled battery 20 of the present application can be used in electrical devices, which may include but are not limited to mobile phones, tablets, laptops, electric toys, electric tools, battery-powered vehicles, electric cars, ships, spacecraft, etc. Among them, electric toys may include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft may include airplanes, rockets, space shuttles, and spacecraft, etc. The electrical devices can be powered by the battery 20 to achieve corresponding functions.

[0121] When the electrical device is a vehicle, the vehicle can be a fuel-powered vehicle, a gas-powered vehicle, or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle. A battery 20 is disposed within the vehicle and can be located at the bottom, front, or rear of the vehicle. Battery 20 can be used to power the vehicle, for example, as an operating power source for the vehicle. The vehicle can also include a controller and a motor. The controller is used to control battery 20 to power the motor, for example, to meet the vehicle's power requirements for starting, navigation, and driving.

[0122] In some embodiments of the present application, the battery 20 can serve not only as the operating power source of the vehicle, but also as the driving power source of the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1.

[0123] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery assembly method, performed on a tab piercing device, characterized in that: The assembly method comprises: A moving device and a toggle assembly for controlling the tab-piercing device are in a preparation position, wherein the toggle assembly includes a guide member, and the moving device is used to drive the guide member, the battery housing, and the electrode assembly to move relative to each other, the housing having a receiving cavity, a through hole connecting the receiving cavity and the outside, the electrode assembly having a tab portion, and the guide member can extend into the through hole to contact the tab portion; The toggle assembly and the moving device are controlled to move synchronously, so that when the moving device changes the relative positions of the shell, the electrode assembly and the guide member, the guide member rotates in the accommodating cavity to change the bending direction of the pole ear portion, thereby allowing the pole ear portion to extend out of the accommodating cavity through the through hole.

2. The assembly method according to claim 1, characterized in that: The moving device includes a bearing assembly and a moving assembly, the bearing assembly is used to drive the electrode assembly to move, and the moving assembly is used to drive the housing and the guide member to move relative to each other, and the step of controlling the synchronous movement of the toggle assembly and the moving device includes: The transmission mechanism of the bearing assembly, the transmission mechanism of the moving assembly and the transmission mechanism of the shifting assembly are controlled to move synchronously by using a virtual axis.

3. The assembly method according to claim 2, characterized in that: The step of using a virtual axis to control the synchronous movement of the transmission mechanism of the bearing assembly, the transmission mechanism of the moving assembly, and the transmission mechanism of the toggle assembly comprises: coupling the virtual axis to the transmission mechanism of the moving component, and coupling the virtual axis to the transmission mechanism of the shifting component; Performing linear interpolation on the transmission mechanism corresponding to the bearing assembly through the virtual axis to obtain an interpolation path; The transmission mechanism of the carrying component, the transmission mechanism of the moving component and the transmission mechanism of the toggle component are controlled to move synchronously according to the interpolation path.

4. The assembly method according to claim 3, characterized in that: The step of controlling the transmission mechanism of the carrying assembly, the transmission mechanism of the moving assembly, and the transmission mechanism of the toggle assembly to move synchronously according to the interpolation path includes: According to the interpolation path, the transmission mechanism of the carrying component is synchronously controlled to drive the electrode component to move along a straight path, the transmission mechanism of the moving component is controlled to drive the shell and the guide member to move in opposite directions on the straight path, and the transmission mechanism of the toggle component is controlled to drive the guide member to rotate.

5. The assembly method according to claim 4, characterized in that: The interpolation path includes a first interpolation path and a second interpolation path; The steps of synchronously controlling the transmission mechanism of the bearing assembly to drive the electrode assembly to move along a straight path according to the interpolation path, controlling the transmission mechanism of the moving assembly to drive the housing and the guide member to move in opposite directions on the straight path, and controlling the transmission mechanism of the toggle assembly to drive the guide member to rotate include: Synchronously controlling the transmission mechanism of the carrier assembly to drive the electrode assembly to move along the linear path according to the first interpolation path, controlling the transmission mechanism of the moving assembly to drive the housing and the guide member to move in opposite directions along the linear path, and controlling the transmission mechanism of the toggle assembly to drive the guide member to rotate until the electrode lug extends along the linear path within the accommodating cavity; According to the second interpolation path, the guide member is synchronously controlled to keep the pole ear portion extending along the straight path, the transmission mechanism of the moving component is controlled to drive the shell and the guide member to move in opposite directions on the straight path, and the transmission mechanism of the supporting component is controlled to drive the electrode assembly to move along the straight path until the pole ear portion passes through the through hole and extends out of the accommodating cavity.

6. The assembly method according to claim 5, characterized in that: The assembly method further comprises: Decoupling the virtual axis from the transmission mechanism of the moving assembly and the transmission mechanism of the toggle assembly; In the decoupled state, the transmission mechanism of the moving assembly, the transmission mechanism of the toggle assembly, and the transmission mechanism of the carrying assembly are controlled to reset.

7. The assembly method according to any one of claims 1 to 6, characterized in that: Before the step of controlling the moving device and the toggle assembly to be in the preparation position, the assembly method includes: Obtaining a bending direction of the pole lug portion; The deflection direction of the guide member is adjusted according to the bending direction.

8. The assembly method according to claim 7, characterized in that: The step of obtaining the bending direction of the tab portion includes: When the moving device and the toggle assembly are in an initial position, determining whether the housing and the electrode assembly are in a working position; In response to whether the shell and the electrode assembly are in a working position, a bending direction of the electrode lug portion is acquired.

9. The assembly method according to claim 3, characterized in that: The step of performing linear interpolation on the transmission mechanism corresponding to the bearing assembly through the virtual axis includes: When the virtual axis is at the origin, linear interpolation is performed on the transmission mechanism corresponding to the bearing assembly through the virtual axis.

10. A tab piercing device, characterized in that: The tab piercing device comprises: A moving device, configured to drive the battery housing and the electrode assembly to move relative to each other, wherein the housing has a receiving cavity, a through hole is formed on the housing to connect the receiving cavity with the outside, and the electrode assembly has an electrode ear; A toggle assembly, comprising a guide member, wherein the guide member is capable of extending into the through hole and contacting the electrode lug portion, wherein the moving device is further configured to drive the guide member, the housing, and the electrode assembly to move relative to each other; A controller is used to execute the assembly method according to any one of claims 1 to 9, so that the pole ear portion extends out of the accommodating cavity through the through hole.

Images