Tab threading device for battery, and assembly apparatus and assembly method

Abstract

Disclosed in the present application are a tab threading device for a battery, and an assembly apparatus and an assembly method. The battery comprises a case and an electrode assembly, wherein the case is provided with an accommodating cavity and through holes; and the electrode assembly is arranged in the accommodating cavity. The tab threading device is used for guiding tab parts of the electrode assembly to extend out through the through holes. The tab threading device comprises a guide member and a supporting mechanism, wherein the supporting mechanism is connected to the guide member; and the guide member is configured to extend into the accommodating cavity and guide the tab parts to extend from the accommodating cavity through the through holes. In this way, the present application can effectively reduce the assembly difficulty of the battery.

Description

Battery tab piercing device, assembly equipment and assembly method

[0001] This application claims priority to the Chinese patent application with application number "2023116436999" filed on November 30, 2023, and invention name "Battery Tab Piercing Device, Assembly Equipment and Assembly Method", which is incorporated herein by reference in its entirety.

Technical field

[0002] The present application relates to the field of battery technology, and in particular to a battery tab piercing device, assembly equipment, and assembly method. [Background Technology]

[0003] 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.

[0004] 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.

[0005] [Summary of the invention]

[0006] 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 assembling the battery and effectively improve the assembly efficiency of the battery.

[0007] In a first aspect, the present application provides a tab-piercing device for a battery, the battery comprising a housing and an electrode assembly; the housing having a housing cavity, a through-hole connecting the housing cavity to the outside world, the electrode assembly disposed in the housing cavity, and the tab-piercing device for guiding the tab portion of the electrode assembly to extend through the through-hole. The tab-piercing device comprises a guide member and a support mechanism, the guide member being configured to penetrate the through-hole, the support mechanism being connected to the guide member and configured to secure a first end of the guide member. The guide member is configured to extend into the housing cavity and guide the tab portion through the through-hole and out of the housing cavity.

[0008] Through the above method, by providing a guide member that can be extended into the accommodating cavity to guide the pole ear part, it can be achieved that during the assembly process of the battery, when the shell is inserted into the electrode assembly, the pole ear part can contact the guide member, and without affecting or 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 and cause damage or fail to penetrate the through hole smoothly, thereby realizing the precise entry of the electrode assembly into the shell, effectively improving the working stability and reliability of the pole ear insertion device, effectively reducing the assembly difficulty of the battery, and effectively improving the assembly efficiency and yield rate of the battery.

[0009] In some embodiments, the support mechanism is configured 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, so as to obliquely guide the pole ear portion to extend through the through hole and out of the accommodating cavity.

[0010] Through the above method, by setting the extension direction of the guide member at an angle to the preset assembly direction, the guide member can guide the pole ear portion at a reasonable inclination angle, which makes it easier for the guide member to provide 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 it is less likely that the pole ear portion will bend or get stuck and be unable to pass out, thereby effectively improving the working stability and reliability of the pole ear piercing device.

[0011] In some embodiments, an extending direction of the guide member forms an angle with an extending direction of the pole lug portion, and the extending direction of the pole lug portion forms an angle with a preset assembly direction.

[0012] Through the above method, 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 to the preset assembly direction, it is beneficial to achieve the guidance of the pole ear portion by the guide member, 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 assembly efficiency and yield of the battery.

[0013] In some embodiments, 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 side where the first side surface is located relative to a preset assembly direction; the second end of the guide member is inclined toward the side where the first side surface is located relative to the first end, and contacts the pole ear portion on the side where the first side surface is located.

[0014] Through the above method, the pole ear can be overlapped on the inclined guide surface, so that the guide can guide the pole ear 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.

[0015] In some embodiments, with the pole ear portion as a boundary, 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.

[0016] Through the above method, by setting the guide member to extend obliquely from the side where the second side is located to the first side, 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.

[0017] In some embodiments, the support mechanism includes a base, a tilt drive motor, and a clamping mechanism. The clamping mechanism is disposed on the base, and the tilt drive motor is disposed on the base and is in transmission connection with the clamping mechanism. The clamping mechanism clamps the guide member, and the tilt drive motor is used to drive the clamping mechanism to rotate, thereby causing the guide member to deflect.

[0018] Through the above method, 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 penetrates 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.

[0019] In some embodiments, the clamping mechanism includes a rotating seat and a clamping block, and 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. In the process of inserting the shell into the electrode assembly, 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.

[0020] In the above manner, by providing a clamping block to secure the guide member to the clamping mechanism, and providing a rotating seat to achieve deflection of the guide member, the guide member is able to guide the tab portion in a suitable tilted posture, effectively improving the operational stability and reliability of the tab-piercing device. Furthermore, by setting the height of the clamping block to be lower than the height of the limiting portion in the extension direction of the limiting portion and the connecting portion, the limiting portion is used to limit the length of the guide member extending into the accommodating cavity, effectively reducing the possibility of damage to the tab portion or the housing due to the excessive length of the guide member extending into the accommodating cavity, thereby facilitating improved operational reliability and stability of the tab-piercing device.

[0021] In some embodiments, the guide member is provided in a sheet shape, and a main surface of the guide member is used for the pole ear portion to overlap.

[0022] In the above manner, by providing a sheet-like guide member, 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.

[0023] In some embodiments, the support mechanism fixes the first end of the guide member so that the second end of the guide member is suspended in the air.

[0024] In the above manner, the first end of the guide member is fixed by a 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 portion. The structure is simple and effective, 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.

[0025] In some embodiments, the process of inserting the housing into the electrode assembly includes a first stage. In the first stage, the support mechanism is configured to move relative to the electrode assembly together with the housing, and the guide member is configured to contact the electrode lug portion and allow the electrode lug portion to slide on the guide member in the first stage, so that the electrode lug portion overlaps the guide member.

[0026] Through the above method, in the first stage, the support 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, which can achieve smooth and fluent guidance of the pole ear portion, effectively improving the guiding efficiency of the pole ear piercing device and the assembly efficiency of the battery.

[0027] In some embodiments, the process of inserting the housing into the electrode assembly includes a second stage following the first stage. During the second stage, the support mechanism is configured to move relative to the housing in a direction away from each other, causing the guide member and the housing to move away from each other. During the second stage, the guide member is configured to maintain contact with the electrode tab and remain relatively stationary, thereby guiding the electrode tab through the through hole and out of the accommodating cavity during the relative movement of the housing.

[0028] Through the above method, in the second stage, the support mechanism and the guide member move relative to the shell in the direction away from each other, and the guide member remains in contact with the pole ear and relatively stationary, 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.

[0029] In a second aspect, the present application provides a battery assembly device, which includes a shell insertion device and the above-mentioned ear-piercing device, and the shell insertion device is used to install the electrode assembly from the open end of the shell into 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 ear-piercing device can move relative to the bearing assembly to move 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 ear portion in the accommodating cavity, so that the ear portion overlaps the guide member to guide the ear portion through the through hole and out of the accommodating cavity.

[0030] Through the above method, 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 realizing the precise insertion of the electrode assembly into the shell, 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.

[0031] In some embodiments, the assembly equipment includes a tab welding device, a pole welding device and a bottom cover welding device; wherein, the tab welding device is used to weld multiple tab sheets of the electrode assembly to form a tab portion; the pole welding device is used to weld the tab portion passing through the through hole to the side of the pole of the shell facing away from the accommodating cavity; the bottom cover welding device is used to weld the bottom cover to the open end of the shell.

[0032] In the above manner, by arranging the pole ear welding device, the pole post welding device and the bottom cover welding device, the assembly equipment can realize the formation of the pole ear portion, the connection between the pole ear portion 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.

[0033] In a third aspect, the present application provides a method for assembling a battery, the battery comprising a housing and an electrode assembly, the housing having a housing cavity and a through-hole connecting the housing cavity to the outside world, the electrode assembly being disposed in the housing cavity, and a tab-piercing device for guiding the tab portion of the electrode assembly to extend through the through-hole. The assembly method comprises: controlling a guide member to penetrate into the housing cavity through the through-hole, and controlling the housing to insert into the electrode assembly; during the process of inserting the housing into the electrode assembly, controlling the guide member to contact the tab portion so that the tab portion overlaps the guide member, thereby guiding the tab portion to pass through the through-hole and extend out of the housing cavity.

[0034] Through the above method, 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 and cause damage or be unable 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.

[0035] In some embodiments, 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 so that the guide member and the shell are 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 stationary, 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 away from each other.

[0036] Through the above method, in the first stage, 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. In the second stage, 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. 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.

[0037] In some embodiments, 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.

[0038] Through the above method, the guide member can be smoothly inserted into the accommodating cavity while providing conditions for subsequent guidance of the pole ear. 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, so that the pole ear is less likely to bend and deform, which is beneficial to improving the reliability of assembly and can improve the efficiency of the electrode assembly into the shell.

Brief Description of the Drawings

[0039] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0040] FIG1 is a schematic structural diagram of a vehicle according to one or more embodiments;

[0041] FIG2 is a schematic diagram of an exploded structure of a battery according to one or more embodiments;

[0042] FIG3 is a schematic diagram of an exploded structure of a battery according to one or more embodiments;

[0043] FIG4 is a schematic structural diagram of an assembly device according to one or more embodiments;

[0044] FIG5 is a schematic structural diagram of a battery assembly system according to one or more embodiments;

[0045] FIG6 is a schematic structural diagram of a tab piercing device according to one or more embodiments;

[0046] FIG7 is a schematic diagram of an implementation scenario of the tab piercing device shown in FIG6 ;

[0047] FIG8 is a schematic diagram of another implementation scenario of the tab piercing device shown in FIG6 ;

[0048] FIG9 is a schematic cross-sectional view of the structure of the tab-piercing device shown in FIG8 along the AA section line;

[0049] FIG10 is a front view of the tab piercing device shown in FIG6 ;

[0050] FIG11 is a schematic flow chart of an embodiment of a battery assembly method of the present application.

[0051] The accompanying drawings in the specific implementation manner are as follows:

[0052] 1000a vehicles;

[0053] 100a power supply battery; 200a controller; 300a motor;

[0054] 10a housing; 11a first part; 12a second part;

[0055] F1 preset assembly direction; F2 extension direction of the guide member; F3 extension direction of the pole ear; F4 extension direction of the connecting portion; F5 extension direction of the extension portion;

[0056] 1. Battery; 10. Shell; 11. Accommodating cavity; 12. Open end; 13. Top; 14. Through hole; 15. Post; 20. Electrode assembly; 21. Ear portion; 211. First side; 102. Second side; 30. Bottom cover; 2. Ear-piercing device; 201. First end; 202. Second end; 100. Guide member; 200. Support mechanism; 210. Base; 220. Flip drive motor; 221. First synchronous wheel; 222. Second synchronous wheel; 223. Synchronous belt; 230. Clamping mechanism; 231. Rotating seat; 232. Connecting portion; 233. Extending portion; 234. Limiting portion; 235. Clamping block; 3. Assembly equipment; 40. Shell insertion device; 41. Shell fixing mechanism; 42. Carrying assembly; 50. Ear welding device; 60. Post welding device; 70. Bottom cover welding device; 80. Pairing device; 4. Conveying equipment; 5. Battery assembly system. [Specific implementation method]

[0057] The following will clearly and completely describe the technical solutions in the embodiments of this application in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] 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).

[0063] 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.

[0064] 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.

[0065] 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.

[0066] 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.

[0067] 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 out, making it difficult to successfully assemble the cell and casing. This results in a more difficult battery assembly process and a lower battery yield rate.

[0068] 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.

[0069] Based on the above considerations, the present application provides a battery tab insertion device, assembly equipment, and assembly method. The battery includes a housing and an electrode assembly. The housing has a housing cavity, and a through-hole is formed in the housing, connecting the housing cavity with the outside world. The electrode assembly is disposed in the housing cavity. The tab insertion device is used to guide the tab portion of the electrode assembly to extend through the through-hole. The tab insertion device includes a guide member and a support mechanism. The guide member is configured to penetrate the through-hole. The support mechanism is connected to the guide member and is configured to secure a first end of the guide member. The guide member is configured to extend into the housing cavity and guide the tab portion through the through-hole and out of the housing cavity. This allows the tab portion to be smoothly inserted into the through-hole and extended out of the housing without affecting or damaging the housing. This prevents the tab portion from obstructing the housing from being inserted into the electrode assembly, and prevents the tab portion from colliding with the housing, causing damage or preventing it from being inserted into the through-hole. This allows for precise insertion of the electrode assembly into the housing, effectively improving the operational stability and reliability of the tab insertion device, reducing the difficulty of battery assembly, and improving battery assembly efficiency and yield.

[0070] The battery disclosed in the embodiments of the present application can be used in electrical devices that use the battery as a power source or 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 computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, and the like. Among them, the electric toy can include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, and the like, and the spacecraft can include airplanes, rockets, space shuttles, and spacecraft, and the like.

[0071] For the convenience of description, the following embodiments are described by taking a vehicle 1000a as an example of an electrical device according to an embodiment of the present application.

[0072] Referring to Figure 1, 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 provided inside vehicle 1000a. The power supply battery 100a can be provided at the bottom, head, or tail of vehicle 1000a. The power supply battery 100a can be used to power vehicle 1000a. For example, the power supply battery 100a can serve as an operating power source for vehicle 1000a. Vehicle 1000a can 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, to meet the power requirements of vehicle 1000a during startup, navigation, and driving.

[0073] In some embodiments of the present application, 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.

[0074] In some embodiments, the power supply battery 100a may be an energy storage device, including an energy storage container, an energy storage cabinet, and the like.

[0075] 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.

[0076] In the embodiment of the present application, the battery 1 may be a secondary battery, which refers to a battery that can be recharged to activate the active material after discharge and continue to be used. Each battery 1 may also be a primary battery.

[0077] The battery 1 includes, but is not limited to, a lithium-ion battery, a sodium-ion battery, a sodium-lithium-ion battery, a lithium metal battery, a sodium metal battery, a lithium-sulfur battery, a magnesium-ion battery, a nickel-metal hydride battery, a nickel-cadmium battery, a lead-acid battery, etc. The battery 1 may be cylindrical, flat, rectangular, or have other shapes.

[0078] In some embodiments, the power supply battery 100a may be a battery module. When there are multiple batteries 1, the multiple batteries 1 are arranged and fixed to form a battery module.

[0079] In some embodiments, referring to FIG. 2 , the power supply battery 100 a may be a battery pack, which includes a box 10 a and a battery 1 , wherein the battery 1 or a battery module is housed in the box 10 a .

[0080] In some embodiments, the box 10a can serve as part of the chassis structure of the vehicle 1000a. For example, a portion of the box 10a can become at least a portion of the floor of the vehicle 1000a, or a portion of the box 10a can become at least a portion of the cross member and longitudinal member of the vehicle 1000a.

[0081] Referring to Figure 2 , a power supply battery 100a includes a housing 10a and a battery 1, which is housed within the housing 10a. The housing 10a provides storage space for the battery 1 and can have various structures. In some embodiments, the housing 10a can include a first portion 11a and a second portion 12a, which overlap each other and together define a storage space for the battery 1. The second portion 12a can be a hollow structure with one end open. The first portion 11a can be a plate-like structure, overlapping the open side of the second portion 12a, so that the first and second portions 11a and 12a together define the storage space. Alternatively, the first and second portions 11a and 12a can each be a hollow structure with one end open, with the open side of the first portion 11a overlapping the open side of the second portion 12a. Of course, the housing 10a formed by the first and second portions 11a and 12a can have various shapes, such as a cylinder or a rectangular parallelepiped.

[0082] In the power supply battery 100a, there may be multiple cells 1, and these cells 1 may be connected in series, in parallel, or in a hybrid configuration. A hybrid configuration refers to a combination of series and parallel connections. The multiple cells 1 may be directly connected in series, in parallel, or in a hybrid configuration, and then the entire structure of the multiple cells 1 is housed within the housing 10a. Alternatively, the power supply battery 100a may be constructed by first connecting multiple cells 1 in series, in parallel, or in a hybrid configuration to form a battery module, which is then connected in series, in parallel, or in a hybrid configuration to form a single structure, which is then housed within the housing 10a. The power supply battery 100a may also include other structures, such as a busbar assembly for electrically connecting the multiple cells 1.

[0083] 3 , the battery 1 is the smallest unit of the battery. As shown in FIG3 , the battery 1 includes a housing 10 , an electrode assembly 20 , and other functional components.

[0084] In some embodiments, the housing 10 is used to encapsulate the electrode assembly 20 and the electrolyte and other 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.

[0085] 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. Without limitation, the shape of the bottom cover 30 can be adapted to the shape of the shell 10 to match the shell 10. Optionally, the bottom cover 30 can be made of a material with a certain hardness and strength (such as aluminum alloy), so that the bottom cover 30 is not easily deformed when squeezed or collided, so that the battery 1 can have a higher structural strength and improved safety performance. The material of the bottom cover 30 can also be various, for example, including but not limited to copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc. In some embodiments, 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. Exemplarily, the insulating component can be plastic, rubber, etc.

[0086] The housing 10 is a component that cooperates with the bottom cover 30 to form the internal environment of the battery 1. This internal environment can accommodate the electrode assembly 20, electrolyte, and other components. The housing 10 and bottom cover 30 can be separate components. An open end 12 can be provided on the housing 10, and the bottom cover 30 is placed over the open end 12 to form the internal environment of the battery 1. Alternatively, the bottom cover 30 and the housing 10 can be integrated. Specifically, the bottom cover 30 and the housing 10 can form a common connection surface before other components are inserted into the housing. When the interior of the housing 10 needs to be enclosed, the bottom cover 30 is placed over the housing 10. The housing 10 can be of various shapes and sizes, such as a rectangular parallelepiped, a cylinder, or a hexagonal prism. Specifically, the shape of the housing 10 can be determined based on the specific shape and size of the electrode assembly 20. The housing 10 can be made of a variety of materials, including but not limited to copper, iron, aluminum, stainless steel, aluminum alloy, and plastic. Functional components such as electrode terminals can be provided on the housing 10. The electrode terminals can be used to electrically connect to the electrode assembly 20 for outputting or inputting electrical energy into or out of the battery 1. In some embodiments, the housing 10 can also be provided with a pressure relief mechanism for releasing internal pressure when the internal pressure or temperature of the battery 1 reaches a threshold.

[0087] 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.

[0088] In some embodiments, the electrode assembly 20 includes a positive electrode, a negative electrode, and a separator. During the battery's charge and discharge processes, active ions (e.g., lithium ions) are intercalated and released between the positive and negative electrodes. The separator, positioned between the positive and negative electrodes, prevents short circuits between the positive and negative electrodes while allowing the active ions to pass through.

[0089] 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.

[0090] 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.

[0091] 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.).

[0092] 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 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. Examples of 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. Examples of 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.

[0093] In some embodiments, the negative electrode may be a negative electrode sheet, and the negative electrode sheet may include a negative electrode current collector.

[0094] As an example, the negative electrode current collector may 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, etc. may be used. The metal foam may be nickel foam, copper foam, aluminum foam, alloy foam, or carbon foam, etc. 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 (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.).

[0095] 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.

[0096] 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.

[0097] As an example, the negative electrode active material may be a negative electrode active material for a battery 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 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. However, 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.

[0098] 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.

[0099] In some embodiments, the electrode assembly 20 further includes a separator disposed between the positive electrode and the negative electrode.

[0100] In some embodiments, 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 and mechanical stability can be selected.

[0101] 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.

[0102] 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.

[0103] In some embodiments, battery 1 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.

[0104] The liquid electrolyte includes an electrolyte salt and a solvent.

[0105] 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.

[0106] 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.

[0107] Among them, the gel electrolyte includes a skeleton network with a polymer as the electrolyte, combined with an ionic liquid-lithium salt.

[0108] Among them, solid electrolytes include polymer solid electrolytes, inorganic solid electrolytes, and composite solid electrolytes.

[0109] 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.

[0110] 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.

[0111] As an example, a composite solid electrolyte is formed by adding an inorganic solid electrolyte filler to a polymer solid electrolyte.

[0112] In some embodiments, the electrode assembly 20 is a wound structure in which the positive electrode sheet and the negative electrode sheet are wound into a wound structure.

[0113] In some embodiments, the electrode assembly 20 includes tabs 21 that conduct current from the electrode assembly 20. The tabs 21 include a positive tab and a negative tab. The positive and negative tabs can be located together at one end of the main body or separately at opposite ends. During the charge and discharge process of the power supply battery 100a, the positive and negative active materials react with the electrolyte, and the tabs 21 connect to the electrode terminals to form a current loop.

[0114] According to some embodiments of the present application, as shown in Figure 3, the battery 1 may include a shell 10 and an electrode assembly 20, the shell 10 has a accommodating cavity 11, and an open end 12 connected to the accommodating cavity 11 is opened on the shell 10. The shell 10 also has a top 13 arranged opposite to the open end 12, and the top 13 may be provided with a through hole 14 connecting the accommodating cavity 11 and the outside world. One end of the electrode assembly 20 may be provided with a pole ear portion 21, and 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.

[0115] Optionally, as shown in FIG3 , the housing 10 may include a post 15 . The post 15 may be disposed at the top 13 of the housing 10 , and a through-hole 14 may be provided in the post 15 . The active material coating portion of the electrode assembly 20 is disposed within the housing 10 , and the tab 21 of the electrode assembly 20 may pass through the through-hole 14 and connect to the side of the post 15 facing away from the accommodating cavity 11 , thereby outputting the electrical energy within 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 .

[0116] Optionally, as shown in FIG3 , 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 out of the opening end 12 after being placed in the shell.

[0117] According to some embodiments of the present application, optionally, as shown in FIG4 , 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. The shell insertion device 40 includes a shell fixing mechanism 41 and a carrying assembly 42. The shell fixing mechanism 41 is used to fix the shell 10. The carrying 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.

[0118] Optionally, the electrode assembly 20 and the bottom cover 30 can be stacked sequentially on the carrier assembly 42 according to a 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 secure the electrode assembly 20 and the bottom cover 30 to reduce the displacement of the electrode assembly 20 during transportation or shell placement.

[0119] Among them, the shell fixing mechanism 41 and the tab device 2 are configured to be able to move relative to the support assembly 42 along a preset assembly direction F1 to correspond to being away from or close to the support assembly 42. The tab device 2 includes a guide member 100 for contacting and guiding the tab portion 21. The first end 201 of the guide member 100 is used to be connected to the tab device 2, and the second end 202 of the guide member 100 is used to pass through the through hole 14 to guide the tab portion 21. Specifically, before contacting the tab 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. The shell fixing mechanism 41 inserts the shell 10 into the electrode assembly 20 during the descent process. During the process of the shell 10 being inserted into the electrode assembly 20, the guide member 100 contacts the tab portion 21 in the accommodating cavity 11, so that the tab portion 21 overlaps the guide member 100 to guide the tab portion 21 to penetrate into the through hole 14.

[0120] Furthermore, 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. In the first stage, the shell fixing mechanism 41 and the through-tab device 2 are configured to be able to descend together along a preset assembly direction F1 relative to the supporting assembly 42, so that the through-tab device 2 can contact the pole lug portion 21 in the accommodating cavity 11. In the second stage, the shell fixing mechanism 41 is configured to be able to descend along a preset assembly direction F1 relative to the through-tab device 2, so that the through-tab device 2 guides the pole lug portion 21 to penetrate into the through hole 14. Before the first stage, the through-tab device 2 is configured to be able to descend along the 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 supporting assembly 42 together with the shell fixing mechanism 41 in the first stage.

[0121] Through the above method, when the shell 10 of the battery 1 is inserted into the electrode assembly 20, 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 realizing the precise insertion of the electrode assembly 20 into the shell, 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 of the battery 1.

[0122] Optionally, as shown in FIG5 , in some embodiments, the assembly device 3 includes a tab welding device 50, a post welding device 60, and a bottom cover welding device 70. The tab welding device 50 is used to weld the multiple tabs of the electrode assembly 20 to form the tab portion 21; the post welding device 60 is used to weld the tab portion 21 passing through the through hole 14 to the side of the post 15 of the housing 10 facing away from the accommodating cavity 11; and the bottom cover welding device 70 is used to weld the bottom cover 30 to the open end 12 of the housing 10.

[0123] In the above manner, by setting up the pole ear welding device 50, the pole post welding device 60 and the bottom cover welding device 70, the assembly equipment 3 can realize the formation of the pole ear portion 21, the connection between the pole ear portion 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 battery 1.

[0124] It should be noted that in this embodiment, the structures to be assembled can be transported between the various workstations of the assembly equipment 3 via a conveyor device 4. The conveyor device 4 and the assembly equipment 3 together constitute the battery assembly system 5. The conveyor device 4 includes a conveyor line, which can be a conveyor structure formed by motor-driven conveyor rollers and a conveyor belt, a conveyor structure formed by motor-driven conveyor chain links, or an AGV conveyor vehicle. It only needs to be able to achieve conveyance in at least one direction and support and ensure the stability of the structures to be assembled.

[0125] The purpose of the tab welding device 50 is to pre-weld the tabs to form the tab portion 21. It can be an ultrasonic welding device that ensures the tabs are welded in a stable, clamped state. The purpose of the pole welding device 60 is to weld the tab portion 21 to the pole 15. It can be a laser welding device. The purpose of the bottom cover welding device 70 is to weld the circumferential edge of the bottom cover 30 to the open end 12 of the housing 10. It is also a laser welding device.

[0126] In addition, the assembly equipment 3 is not limited to including the tab welding device 50, the shell insertion device 40, the tab piercing device 2, the pole welding device 60 and the bottom cover welding device 70. For example, when the number of electrode assemblies 20 is multiple, for example, two, the assembly equipment 3 also includes a matching device 80, which is used to stack multiple electrode assemblies 20 so that the tabs of the two electrode assemblies 20 are roughly opposite to each other, so that the conveying structure can convey the matched electrode assemblies 20 to the tab welding device 50 for welding the tabs to facilitate the formation of the tab portion 21. For example, in order to ensure the reliability of the battery assembly process, dust removal, NG detection stations, etc. can also be added between any two adjacent stations, which is not limited in this embodiment.

[0127] According to some embodiments of the present application, as shown in Figure 6, the tab piercing device 2 includes a guide member 100 and a support mechanism 200. The guide member 100 is used to penetrate 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.

[0128] Among them, 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 pass through the through hole 14 and extend out of the accommodating cavity 11.

[0129] Through the above method, by providing a guide member 100 that can extend into the accommodating cavity 11 to guide the pole ear portion 21, it can be achieved that during the assembly process of the battery 1, when the shell 10 is inserted into the electrode assembly 20 along the preset assembly direction F1 through the open end 12, the pole ear portion 21 can be overlapped on the guide member 100, and without affecting or 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 and cause damage or fail to smoothly penetrate the through hole 14, thereby achieving precise shell 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 of the battery 1.

[0130] According to some embodiments of the present application, optionally, as shown in Figures 7 to 9, 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, so as to tilt and guide the pole ear portion 21 to penetrate the through hole 14.

[0131] Optionally, 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.

[0132] By setting the extension direction F2 of the guide member 100 at an angle to the preset assembly direction F1, the guide member 100 can guide the pole ear portion 21 at a reasonable inclination angle, which facilitates the guide member 100 to provide relatively gentle guidance to the pole ear portion 21, and the inclined guide member 100 can be offset from the pole ear portion 21 when entering the through hole 14, reducing the possibility of the guide member 100 and the pole ear portion 21 colliding and causing damage, thereby guiding the pole ear portion 21 to penetrate the through hole 14 without causing damage to the pole ear portion 21, and it is less likely that the pole ear portion 21 will bend or stuck and unable to penetrate, thereby effectively improving the working stability and reliability of the pole ear piercing device 2.

[0133] According to some embodiments of the present application, optionally, as shown in FIG9 , 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 at an angle to the preset assembly direction F1 .

[0134] By setting the extension direction F2 of the guide member 100 and the extension direction F3 of the pole ear portion 21 at an angle, and setting the extension direction F3 of the pole ear portion 21 to be set at an angle to the preset assembly direction F1, it is beneficial for the guide member 100 to guide the pole ear portion 21, effectively avoiding the pole ear portion 21 from colliding with the shell 10 and causing bending or damage, effectively reducing the assembly difficulty of the battery 1, and effectively improving the assembly efficiency and yield of the battery 1.

[0135] According to some embodiments of the present application, optionally, as shown in Figure 9, 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.

[0136] 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. By setting the second end 202 of the guide member 100 to be inclined toward the side where the first side surface 101 is located relative to the first end 201, the guide member 100 and the pole ear portion 21 are staggered, 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.

[0137] According to some embodiments of the present application, optionally, as shown in Figure 9, with the pole ear portion 21 as the boundary, the guide member 100 is configured to extend obliquely from the side where the second side surface 102 is located to the first side surface 101, and contact the pole ear portion 21 on the side where the first side surface 101 of the pole ear portion 21 is located.

[0138] 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, the inclination angle of the guide member 100 relative to the pole ear portion 21 is relatively gentle, thereby guiding the pole ear portion 21 more gently, and enabling the pole ear portion 21 to 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 and causing bending or damage, effectively reducing the assembly difficulty of the battery 1, and effectively improving the assembly efficiency and yield of the battery 1.

[0139] According to some embodiments of the present application, optionally, as shown in FIG10 , the support mechanism 200 includes a base 210, a flip drive motor 220, and a clamping mechanism 230. 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, thereby causing the guide member 100 to deflect.

[0140] Optionally, the support 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 flip 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.

[0141] In the above manner, by setting a flip drive motor 220 to drive the clamping mechanism 230 to rotate, so as to drive the guide member 100 to deflect, thereby realizing the adjustment of the inclination angle of the guide member 100, and realizing the guide member 100 to penetrate the through hole 14 at a reasonable inclination angle, thereby guiding the pole ear part 21 more gently, which is beneficial to improving the working reliability of the pole ear piercing device 2.

[0142] According to some embodiments of the present application, optionally, as shown in FIG10 , the clamping mechanism 230 includes a rotating base 231 and a clamping block 235. The rotating base 231 includes a connecting portion 232, an extension portion 233, and a limiting portion 234. The connecting portion 232 and the limiting portion 234 are disposed at opposite ends of the extension portion 233 and extend toward the same side of the extension portion 233. The extension direction F4 of the limiting portion 234 and the connecting portion 232 is perpendicular to the extension direction F5 of the extension portion 233. The connecting portion 232 is rotatably connected to the base 210. The clamping block 235 is disposed on the same side of the extension portion 233 and is located between the connecting portion 232 and the limiting portion 234. During 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. In the extension direction F4 of the limiting portion 234 and the connecting portion 232, 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.

[0143] In the above manner, by providing the clamping block 235 to fix the guide member 100 to the clamping mechanism 230, and providing the rotating seat 231 to achieve deflection of the guide member 100, the guide member 100 is enabled to guide the tab portion 21 in a suitable tilted posture, effectively improving the working stability and reliability of the tab-piercing device 2. In addition, by setting the height of the clamping block 235 to be lower than the height of the limiting portion 234 in the extension direction F4 of the limiting portion 234 and the connecting portion 232, the limiting portion 234 is used to limit the length of the guide member 100 extending into the accommodating cavity 11, effectively reducing the possibility of damage to the tab 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 tab-piercing device 2.

[0144] According to some embodiments of the present application, optionally, as shown in FIG. 9 , 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 .

[0145] In the above manner, by providing the sheet-shaped guide member 100 , 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 reducing the difficulty of assembling the battery 1 .

[0146] According to some embodiments of the present application, optionally, as shown in FIG6 , 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 in the air.

[0147] In the above manner, 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 be extended into the accommodating cavity 11 while the guide member 100 is fixed, thereby guiding the pole ear portion 21. The 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.

[0148] According to some embodiments of the present application, optionally, as shown in Figures 7 to 9, the process of inserting the housing 10 into the electrode assembly 20 includes a first stage. In the 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 electrode lug 21 in the first stage and allow the electrode lug 21 to slide on the guide member 100, so that the electrode lug 21 overlaps the guide member 100.

[0149] In the first stage, 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 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 device 2 and the assembly efficiency of the battery 1.

[0150] According to some embodiments of the present application, as shown in FIG9 , the process of inserting the housing 10 into the electrode assembly 20 optionally includes a second stage following the first stage. In the second stage, the support mechanism 200 is configured to move relative to the housing 10 in a direction away from each other, causing the guide member 100 to move away from the housing 10. In the second stage, the guide member 100 is configured to maintain contact with the electrode lug 21 and remain relatively stationary, thereby guiding the electrode lug 21 to pass through the through-hole 14 as the housing 10 moves away from each other.

[0151] In the above manner, in the second stage, 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 in contact with the pole ear portion 21 and relatively stationary, so that 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.

[0152] According to some embodiments of the present application, as shown in FIG11 , the assembly method of the battery 1 of the present application may include the following steps.

[0153] S100: Control the guide member to pass through the through hole into the accommodating cavity, and control the shell to be inserted into the electrode assembly.

[0154] 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 to the preset assembly direction F1, and then the support mechanism 200 is controlled to make the guide member 100 pass through the through hole 14 into the accommodating cavity 11 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.

[0155] Through the above method, the guide member 100 can be smoothly inserted into the accommodating cavity 11 while providing conditions for the subsequent guidance of the pole ear portion 21. The extension direction F2 of the guide member 100 is set at an angle to 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 less likely to bend and deform, which is beneficial to improving the reliability of assembly and can improve the efficiency of the electrode assembly 20 entering the shell.

[0156] S200: During the process of inserting the housing into the electrode assembly, the guide member is controlled to contact the electrode ear portion so that the electrode ear portion overlaps the guide member to guide the electrode ear portion to extend out of the accommodating cavity through the through hole.

[0157] 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. In the first stage, the support mechanism 200 is controlled to move together with the housing 10 relative to the electrode assembly 20, driving the guide member 100 to contact the electrode lug 21 in the first stage, causing the electrode lug 21 to overlap the guide member 100. In the second stage, the support mechanism 200 and the housing 10 are controlled to move relative to each other, causing the guide member 100 and the housing 10 to move away from each other. The support mechanism 200 is controlled to ensure that the guide member 100 and the electrode lug 21 remain in contact and relatively stationary, thereby guiding the electrode lug 21 to pass through the through-hole 14 during the relative movement of the housing 10.

[0158] 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. In the second stage, the support mechanism 200 and the shell 10 move relative to each other in a direction away from each other, and maintain the contact between the guide member 100 and the pole ear portion 21, so that 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. By smoothly guiding the pole ear portion 21 to penetrate the through hole 14, the pole ear portion 21 is not likely to block the shell 10 from being inserted into the electrode assembly 20, and the pole ear portion 21 is not likely to collide with the shell 10 and cause damage or fail to smoothly penetrate the through hole 14, thereby achieving precise 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.

[0159] According to some embodiments of the present application, as shown in Figures 3 to 10 , a battery 1 includes a housing 10 and an electrode assembly 20. The housing 10 has a housing cavity 11 and a through-hole 14 connecting the housing cavity 11 with the outside world. The electrode assembly 20 is disposed in the housing cavity 11. A tab insertion device 2 is configured to guide a tab portion 21 of the electrode assembly 20 to extend through the through-hole 14. The tab insertion device 2 includes a guide member 100 and a support mechanism 200. The guide member 100 is configured to penetrate the through-hole 14. The support mechanism 200 is coupled to the guide member 100 and is configured to secure a first end 201 of the guide member 100. The guide member 100 is configured to extend into the housing cavity 11 and guide the tab portion 21 through the through-hole 14 and out of the housing cavity 11. The support mechanism 200 is configured to drive the guide member 100 to deflect, such that an extension direction F2 of the guide member 100 is angled with a predetermined assembly direction F1, thereby obliquely guiding the tab portion 21 through the through-hole 14 and out of the housing cavity 11. The extension direction F2 of the guide member 100 forms an angle with the extension direction F3 of the tab portion 21. The extension direction F3 of the tab portion 21 forms an angle with the predetermined assembly direction F1. The tab portion 21 has a first side surface 101 and a second side surface 102, which are opposite to each other. The tab portion 21 is tilted toward the first side surface 101 relative to the predetermined assembly direction F1. The second end 202 of the guide member 100 is tilted toward the first side surface 101 relative to the first end 201 and contacts the tab portion 21 on the side where the first side surface 101 is located. With the tab portion 21 as the boundary, the guide member 100 is configured to extend obliquely from the side where the second side surface 102 is located to the first side surface 101, contacting the tab portion 21 on the side where the first side surface 101 is located. The support mechanism 200 includes a base 210, a flip drive motor 220, and a clamping mechanism 230. The clamping mechanism 230 is disposed on the base 210. 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. The flip drive motor 220 is used to drive the clamping mechanism 230 to rotate, thereby causing the guide member 100 to deflect. The clamping mechanism 230 includes a rotating base 231 and a clamping block 235. The rotating base 231 includes a connecting portion 232, an extension portion 233, and a limiting portion 234. The connecting portion 232 and the limiting portion 234 are disposed at opposite ends of the extension portion 233 and extend toward the same side of the extension portion 233. The extension direction F4 of the limiting portion 234 and the connecting portion 232 is perpendicular to the extension direction F5 of the extension portion 233. The connecting portion 232 is rotatably connected to the base 210 . The clamping block 235 is disposed on the same side of the extending portion 233 and is located between the connecting portion 232 and the limiting portion 234 .During insertion of the housing 10 into the electrode assembly 20, portions of the extension 233, the clamping block 235, and the stopper 234 are positioned relative to the top 13 of the housing 10. In the extension direction F4 of the stopper 234 and the connecting portion 232, the height of the clamping block 235 is lower than that of the stopper 234. The clamping block 235 serves to clamp the guide member 100. The guide member 100 is sheet-shaped, with one major surface of the guide member 100 being designed to overlap the electrode lug 21. The support mechanism 200 secures the first end 201 of the guide member 100, leaving the second end 202 of the guide member 100 suspended. Inserting the housing 10 into the electrode assembly 20 includes a first stage. In this first stage, the support mechanism 200 is configured to move relative to the electrode assembly 20 along with the housing 10. The guide member 100 contacts the electrode lug 21 and allows the lug 21 to slide on the guide member 100, thereby overlapping the lug 21. The process of inserting the housing 10 into the electrode assembly 20 includes a second stage following the first stage. During the second stage, the support mechanism 200 is configured to move relative to the housing 10 in a direction away from each other, causing the guide member 100 to move away from the housing 10. During the second stage, the guide member 100 is configured to maintain contact with the electrode tab 21 and remain relatively stationary, thereby guiding the electrode tab 21 through the through hole 14 and out of the accommodating cavity 11 during the relative movement of the housing 10.

[0160] According to some embodiments of the present application, as shown in FIG4 , the assembly device 3 includes the above-mentioned tab-piercing device 2. This arrangement allows the tab portion 21 to smoothly extend out of the housing 10, effectively reducing the difficulty of assembling the battery 1 and improving the assembly efficiency of the battery 1.

[0161] In summary, the embodiments of the present application can enable the tab 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 .

[0162] 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 lug piercing device, wherein: The battery comprises 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 electrode ear device is used to guide the electrode ear part of the electrode assembly to extend from the through hole; the electrode ear device comprises: A guide member, used for penetrating into the through hole; A supporting mechanism, connected to the guide member and used to fix the first end of the guide member; Wherein, the guide member is used to extend into the accommodating cavity and guide the pole ear portion to extend out of the accommodating cavity through the through hole.

2. The electrode lug device according to claim 1, wherein: 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 pass through the through hole and extend out of the accommodating cavity.

3. The electrode lug device according to claim 2, wherein: The extending direction of the guide member is arranged at an angle to the extending direction of the pole ear portion; the extending direction of the pole ear portion is arranged to be arranged at an angle to the preset assembly direction.

4. The electrode lug device according to claim 3, wherein: 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 the 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.

5. The electrode lug device according to claim 4, wherein: With the pole ear portion as a boundary, the guide member is arranged to extend obliquely from the side where the second side surface is located to the first side surface, and to contact the pole ear portion at the side where the first side surface of the pole ear portion is located.

6. The electrode lug device according to claim 2, wherein: The supporting mechanism includes a base, a flip driving motor and a clamping mechanism, wherein the clamping mechanism is arranged on the base, and the flip driving motor is arranged on the base and is transmission-connected with the clamping mechanism; the clamping mechanism clamps the guide member, and the flip driving motor is used to drive the clamping mechanism to rotate so as to drive the guide member to deflect.

7. The electrode lug device according to claim 6, wherein: The clamping mechanism includes a rotating seat and a clamping block, the rotating seat includes a connecting portion, an extending portion and a limiting portion, the connecting portion and the limiting portion are arranged at both ends of the extending portion and extend in the same side direction of the extending portion, and the extending direction of the limiting portion and the connecting portion is perpendicular to the extending direction of the extending portion; the connecting portion is rotatably connected to the base, the clamping block is arranged on the same side of the extending portion and is located between the connecting portion and the limiting portion; in the process of the shell being inserted into the electrode assembly, part of the extending portion, the clamping block and the limiting portion are arranged opposite to the top of the shell; in the extending direction of the limiting portion and the connecting portion, the height of the clamping block is lower than the height of the limiting portion; the clamping block is used to clamp the guide member.

8. The electrode lug device according to any one of claims 1 to 7, wherein: The guide member is provided in a sheet shape, and a main surface of the guide member is used for overlapping the pole ear portion.

9. The electrode lug device according to any one of claims 1 to 7, wherein: The supporting mechanism fixes the first end of the guide member so that the second end of the guide member is suspended.

10. The electrode lug device according to any one of claims 1 to 7, wherein: The process of inserting the shell into the electrode assembly includes a first stage; in the first stage, the support mechanism is configured to be able to move relative to the electrode assembly together with the shell; 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.

11. The electrode lug device according to claim 10, wherein: The process of inserting the shell into the electrode assembly includes a second stage after the first stage; in the second stage, the support mechanism is configured to move relative to the shell in a direction away from each other, so that the guide member and the shell are away from each other; In the second stage, the guide member is arranged to keep in contact with the pole ear portion and to be relatively stationary, 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.

12. A battery assembly device, wherein: include: A shell insertion device and a piercing ear device as claimed in any one of claims 1 to 11, wherein the shell insertion device is used to insert the electrode assembly into the shell from the open end of the shell; the shell insertion device comprises a shell fixing mechanism and a bearing assembly, wherein 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 electrode ear device can move relative to the bearing assembly to move 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 electrode ear portion in the accommodating cavity so that the electrode ear portion The guide member is overlapped to guide the pole ear portion to pass through the through hole and extend out of the accommodating cavity.

13. The assembly apparatus according to claim 12, wherein: 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 the 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.

14. A method for assembling a battery, wherein: The battery comprises 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 from the through hole; 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; During the process of inserting the shell into the electrode assembly, the guide member is controlled to contact the pole ear portion so that the pole ear portion overlaps the guide member to guide the pole ear portion to pass through the through hole and extend out of the accommodating cavity.

15. The assembly method according to claim 14, wherein: The step of controlling the guide member to contact the pole ear portion so that the pole ear portion overlaps the guide member includes: In the first stage, the support mechanism is controlled to move together with the shell relative to the electrode assembly, so as 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 the 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 away from each other.

16. The assembly method according to claim 14, wherein: The step of controlling the guide member to pass through the through hole into the accommodating cavity comprises: Controlling the support mechanism 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; The supporting mechanism is controlled so that the guide member penetrates into the accommodating cavity through the through hole in a deflected state.

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