Battery tab penetrating device and assembling equipment

Abstract

The utility model discloses a tab penetrating device and assembling equipment of a battery. The battery comprises a shell and an electrode assembly, the shell is provided with a containing cavity, a through hole communicated with the containing cavity and the outside is formed in the shell, the electrode assembly is arranged in the containing cavity, and the tab penetrating device is used for guiding a tab part of the electrode assembly to extend out of the through hole. The tab penetrating device comprises a clamping mechanism and a driving mechanism, the clamping mechanism comprises a first clamping piece and a second clamping piece which are movably connected, and a clamping space with an adjustable opening and closing angle can be formed between the first clamping piece and the second clamping piece. And the driving mechanism is in transmission connection with the first clamping piece and / or the second clamping piece so as to drive the first clamping piece and / or the second clamping piece to move to adjust the size of the opening and closing angle. And the driving mechanism is configured to drive the first clamping piece and / or the second clamping piece to move, so that the first clamping piece and the second clamping piece can clamp the tab part to pass through the through hole and extend out of the accommodating cavity. Through the mode, the assembly difficulty of the battery can be effectively reduced.

Description

Technical Field

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

[0002] A battery is a cup, tank or other container or part of a composite container that contains an electrolyte solution and metal electrodes to generate an electric current. It is a device that can convert chemical energy into electrical energy. With the development of science and technology, batteries with advantages such as easy portability, simple and easy charging and discharging, and long-term stable power supply are widely used in the fields of automobiles, home appliances, aerospace, etc.

[0003] The battery's tabs are metal conductors that lead the positive and negative electrodes out of the shell from the battery cell. Therefore, during the battery assembly process, the battery's tabs need to be led out of the shell to serve as contact points when the battery is charged and discharged. However, during the battery assembly process, when the battery cell is assembled in the shell, the tabs are easily bent inside the shell and cannot extend out of the shell, which makes the battery assembly and preparation process more difficult and the battery preparation yield is low. Utility Model Content

[0004] The main technical problem solved by the present application is to provide a battery ear-piercing device and assembly equipment, so that the ear part can smoothly extend out of the shell, which can effectively reduce the difficulty of battery assembly and effectively improve the battery assembly efficiency.

[0005] In the first aspect, the present application provides a battery ear-piercing device, the battery includes a shell and an electrode assembly, the shell has a accommodating cavity, a through hole connecting the accommodating cavity and the outside is opened on the shell, the electrode assembly is arranged in the accommodating cavity, and the ear-piercing device is used to guide the ear portion of the electrode assembly to extend from the through hole. The ear-piercing device includes a clamping mechanism and a driving mechanism, the clamping mechanism includes a first clamping member and a second clamping member that are movably connected, and a clamping space with an adjustable opening and closing angle can be formed between the first clamping member and the second clamping member. The driving mechanism is transmission-connected to the first clamping member and / or the second clamping member to drive the first clamping member and / or the second clamping member to move to adjust the size of the opening and closing angle. Among them, the driving mechanism is configured to drive the first clamping member and / or the second clamping member to move, so that the first clamping member and the second clamping member can clamp the ear portion through the through hole and extend out of the accommodating cavity.

[0006] Through the above-mentioned method, by setting a clamping mechanism that can be extended into the accommodating cavity to clamp the pole ear part, and setting a driving mechanism that transmits and connects the first clamping member and / or the second clamping member, it can be achieved that during the assembly process of the battery, when the shell is inserted into the electrode assembly so that the electrode assembly is accommodated in the accommodating cavity, the driving mechanism drives the first clamping member and / or the second clamping member to move to adjust the opening and closing angle to clamp the pole ear part, and under the premise of not affecting and damaging the shell, the pole ear part can be guided to smoothly penetrate the through hole and can smoothly extend out of the accommodating cavity, so that the pole ear part is not easy to block the shell from being inserted into the electrode assembly, and the pole ear part is not easy to collide with the shell to cause damage or fail to smoothly penetrate the through hole, thereby realizing the precise entry of the electrode assembly into the shell, effectively improving the working stability and reliability of the pole ear piercing device, effectively reducing the difficulty of battery assembly, and effectively improving the assembly efficiency and yield rate of the battery.

[0007] In some embodiments, the first clamping member and / or the second clamping member are configured to be rotatable about a preset rotation axis.

[0008] Through the above method, it is possible to adjust the opening and closing angle of the clamping space by rotating the first clamping member and / or the second clamping member, which facilitates the pole ear to extend into the clamping space, thereby facilitating the clamping mechanism to smoothly clamp the pole ear. The structure is simple and easy to operate, which is conducive to improving the clamping efficiency of the clamping mechanism and effectively improving the working reliability of the clamping assembly.

[0009] In some embodiments, the predetermined rotation axis is arranged to be perpendicular to the axis of the through hole.

[0010] Through the above method, by setting a preset rotation axis perpendicular to the axis of the through hole, it is possible to facilitate the positioning of the pole ear portion when the clamping mechanism uses the first clamping member and the second clamping member to clamp the pole ear portion, and when clamping the pole ear portion, the clamping mechanism only needs to adjust the opening and closing angle without additionally adjusting the angle or posture of the clamping mechanism as a whole relative to the pole ear portion, which is beneficial to reducing the possibility of damaging the pole ear portion, and is beneficial to improving the clamping efficiency of the clamping mechanism, and effectively improving the working reliability of the clamping assembly.

[0011] In some embodiments, the first clamping member includes a first clamping plate body and a first connecting portion, the first clamping plate body and the first connecting portion are connected, and the second clamping member includes a second clamping plate body and a second connecting portion, the second clamping plate body and the second connecting portion are connected. The first clamping plate body and the first connecting portion are bent and connected, and the bent connection between the first clamping plate body and the first connecting portion is rotatably connected to the second connecting portion and / or the second clamping plate body. A clamping space is formed between the first clamping plate body and the second clamping plate body, and the angle between the first clamping plate body and the second clamping plate body forms an opening and closing angle. The driving mechanism is in transmission connection with the first connecting portion and / or the second connecting portion to drive the first clamping plate body and / or the second clamping plate body to rotate to adjust the size of the opening and closing angle.

[0012] Through the above method, by setting the first clamping member to include a first clamping plate body and a first connecting part, and setting the second clamping member to include a second clamping plate body and a second connecting part, the first clamping plate body and the second clamping plate body are used to clamp the pole ear part, and the first connecting part and / or the second connecting part are used to drive and adjust the size of the opening and closing angle, thereby achieving precise control of the clamping mechanism while improving the structural stability, effectively improving the clamping efficiency of the clamping mechanism, and effectively improving the working reliability of the clamping assembly.

[0013] In some embodiments, the first clamping member is provided with a avoidance hole penetrating through both sides thereof, the avoidance hole spanning the first connection portion and the first clamping plate body via the bent connection. During the rotation of the first clamping plate body and / or the second clamping plate body, the avoidance hole is used to avoid the second connection portion.

[0014] Through the above method, by setting the avoidance hole to provide space for the relative rotation between the second clamping member and the first clamping member, it is convenient to clamp the pole ear by adjusting the opening and closing angle, thereby achieving precise control of the clamping mechanism while improving the structural stability, effectively improving the clamping efficiency of the clamping mechanism, and effectively improving the working reliability of the clamping assembly.

[0015] In some embodiments, the bending connection is provided with a first shaft accommodating hole on both sides of the avoidance hole, the second connection portion is provided with a second shaft accommodating hole, and the clamping mechanism includes a shaft, which is passed through the first shaft accommodating hole and the second shaft accommodating hole.

[0016] Through the above method, by passing the rotating shaft through the first rotating shaft accommodating hole and the second rotating shaft accommodating hole, the connection and relative rotation between the first clamping member and the second clamping member can be achieved, and the opening and closing angle can be adjusted while ensuring the structural stability, which is beneficial to improving the clamping efficiency of the clamping mechanism and effectively improving the working reliability of the clamping assembly.

[0017] In some embodiments, the first end of the first clamp and the first end of the second clamp are connected to each other, and the first clamp and / or the second clamp are configured to be able to elastically deflect around the connection between each other, so that the first clamp and the second clamp are rotatably connected. The clamping mechanism also includes a clamping slider, which is slidably mounted on the first clamp and the second clamp. When the clamping slider is in the release position, the first clamp and the second clamp are arranged at an angle from the first end to the second end to form a clamping space; the driving mechanism is transmission-connected to the clamping slider, and is used to drive the clamping slider to slide along the first clamp and the second clamp, so that the opening and closing angles can be changed by the clamping slider.

[0018] Through the above method, the driving mechanism drives the sliding of the clamping slider to adjust the opening and closing angle of the clamping mechanism. The structure is simple, the operation is convenient, and the structural stability is high, which is beneficial to improving the working stability and reliability of the ear-piercing device.

[0019] In some embodiments, the first clamping member and the second clamping member are arranged in a sheet shape, and the first clamping member and the second clamping member are arranged opposite to each other.

[0020] Through the above method, the first clamping member and the second clamping member are arranged in a sheet shape, which can provide conditions for adjusting the opening and closing angle while reducing the manufacturing cost, effectively reducing the possibility that the first clamping member and the second clamping member are too thick to provide a sufficient opening and closing angle, effectively improving the effectiveness of the clamping mechanism, and facilitating the clamping mechanism to smoothly clamp the pole ear.

[0021] In some embodiments, the process of inserting the shell into the electrode assembly includes a first stage; in the first stage, the first clamping member and the second clamping member are configured to be able to move relative to the electrode assembly together with the shell so that the pole ear portion enters the clamping space, and the driving mechanism drives the first clamping member and the second clamping member to reduce the opening and closing angle to clamp the pole ear portion.

[0022] Through the above method, by moving the first clamping member and the second clamping member together with the shell relative to the electrode assembly in the first stage, the electrode assembly can be gradually inserted into the shell while the pole ear portion enters the clamping space between the first clamping member and the second clamping member, so that the pole ear portion can be clamped smoothly and fluently, effectively improving the clamping efficiency of the clamping mechanism and the assembly efficiency of the battery.

[0023] In some embodiments, the process of inserting the shell into the electrode assembly includes a second stage located after the first stage; in the second stage, the first clamping member and the second clamping member are configured to be able to move relative to the shell in a direction away from each other and maintain the clamping of the pole ear portion, so that the pole ear portion passes through the through hole and extends out of the accommodating cavity.

[0024] Through the above method, by moving the first clamping member and the second clamping member relative to the shell in the direction away from each other in the second stage and maintaining the clamping of the pole ear, the pole ear can be clamped to pass through the through hole while the electrode assembly is further inserted into the shell, and 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.

[0025] In some embodiments, the driving mechanism is used to drive the first clamping member and / or the second clamping member to rotate so that the relative position of the first clamping member and the second clamping member can be switched between the clamping position and the release position; the opening and closing angle in the clamping position is smaller than the opening and closing angle in the release position; before the first stage, the first clamping member and the second clamping member are configured to be able to move relative to the shell to approach the shell, and the driving mechanism is used to drive the first clamping member and / or the second clamping member to rotate to switch to the clamping position, so that the first clamping member and the second clamping member can pass through the through hole and extend into the accommodating cavity; the driving mechanism is configured to drive the first clamping member and / or the second clamping member to rotate after the first clamping member and the second clamping member extend into the accommodating cavity space so that the relative position is switched from the clamping position to the release position.

[0026] Through the above method, the clamping mechanism in the clamping position in the first stage can smoothly pass through the through hole and extend into the accommodating cavity. Compared with the clamping mechanism in the release position passing through the through hole, the space occupied by the clamping mechanism can be effectively reduced, and the area of ​​the required through hole can be reduced, so that the first clamping member and the second clamping member can smoothly pass through the through hole, effectively improving the space utilization rate. After the clamping mechanism extends into the accommodating cavity, it is convenient for the pole ear part to enter the clamping space of the clamping mechanism, and it is convenient to clamp the pole ear part, which effectively improves the reliability of the work of the pole ear piercing device.

[0027] In a second aspect, the present application provides a battery assembly device, the assembly device comprising a shell insertion device and a pole ear piercing device as described above. The shell insertion device is used to load the electrode assembly into the shell from the open end of the shell; the shell insertion device comprises 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. Among them, the shell fixing mechanism and the pole ear piercing device can move relative to the bearing assembly to correspondingly move away from or close to the bearing assembly. The shell fixing mechanism is used to insert the shell into the electrode assembly; the driving mechanism is used to drive the first clamping member and the second clamping member to clamp the pole ear portion in the accommodating cavity, so that the pole ear portion passes through the through hole and extends out of the accommodating cavity.

[0028] 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 achieving accurate shell insertion, effectively improving the working stability and reliability of the pole ear insertion device, effectively reducing the difficulty of battery assembly, and effectively improving the assembly efficiency and yield rate of the battery.

[0029] In some embodiments, the assembly equipment includes a pole ear welding device, a pole column welding device and a bottom cover welding device; wherein, the pole ear welding device is used to weld multiple pole ear sheets of the electrode assembly to form a pole ear portion; the pole column welding device is used to weld the pole ear portion passing through the through hole to the side of the pole of the shell away from the accommodating cavity; the bottom cover welding device is used to weld the bottom cover to the open end of the shell.

[0030] Through the above method, by setting up 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 part, the connection between the pole ear part and the pole post, and the connection between the bottom cover and the shell, which is beneficial to improving the connection stability of the various parts of the battery structure and the stability and reliability of the battery operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0032] Figure 1 is a schematic structural diagram of a vehicle according to one or more embodiments;

[0033] Figure 2 is a schematic diagram of an exploded structure of a power supply battery according to one or more embodiments;

[0034] Figure 3 is a schematic diagram of an exploded structure of a battery according to one or more embodiments;

[0035] Figure 4 is a schematic diagram of the structure of an assembly device according to one or more embodiments;

[0036] Figure 5 is a schematic structural diagram of a battery assembly system according to one or more embodiments;

[0037] Figure 6 is a schematic structural diagram of a piercing lug device according to one or more embodiments;

[0038] Figure 7 for Figure 6 A schematic diagram of the structure of the clamping mechanism in the release position;

[0039] Figure 8 for Figure 6 A schematic diagram of the structure of the clamping mechanism shown in the clamping position;

[0040] Fig. 9 for Figure 6 Another structural schematic diagram of the clamping mechanism shown in the release position;

[0041] Fig.10 for Figure 6 Another structural schematic diagram of the clamping mechanism shown in the clamping position;

[0042] Fig.11 for Figure 6 A schematic diagram of an implementation scenario of the clamping mechanism shown;

[0043] Fig.12 for Figure 6 A schematic diagram of another implementation scenario of the clamping mechanism shown.

[0044] The reference numerals in the specific implementation manner are as follows:

[0045] 1000a vehicles;

[0046] 100a power supply battery; 200a controller; 300a motor;

[0047] 10a housing; 11a first part; 12a second part;

[0048] F1 presets the assembly direction; L1 presets the rotation axis; A opens and closes the angle;

[0049] 1 battery; 10 shell; 11 accommodating cavity; 12 open end; 13 top; 14 through hole; 15 pole; 20 electrode assembly; 21 pole ear; 30 bottom cover; 2 pole ear insertion device; 201 clamping space; 202 avoidance hole; 203 first rotating shaft accommodating hole; 204 second rotating shaft accommodating hole; 205 first end; 206 second end; 100 clamping mechanism; 110 first clamping piece; 111 first clamping plate body; 112 first connecting portion; 120 second clamping piece; 121 second clamping plate body; 122 second connecting portion; 130 rotating shaft; 140 pressing slider; 200 driving mechanism; 3 assembly equipment; 40 shell insertion device; 41 shell fixing mechanism; 42 bearing assembly; 50 pole ear welding device; 60 pole column welding device; 70 bottom cover welding device; 80 matching device; 4 conveying equipment; 5 battery assembly system. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0051] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field 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" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0052] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0053] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0054] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0055] 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).

[0056] 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. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0057] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0058] With the development of battery technology, batteries are used in more and more fields and are gradually replacing traditional fossil energy in the field of automobile power. Batteries can store chemical energy and controllably convert chemical energy into electrical energy. In recyclable batteries, the active materials can be activated by charging after discharge and continue to be used.

[0059] A battery is a cup, tank or other container or part of a composite container that contains an electrolyte solution and metal electrodes to generate an electric current. It is a device that can convert chemical energy into electrical energy. With the development of science and technology, batteries with advantages such as easy portability, simple and easy charging and discharging, and long-term stable power supply are widely used in the fields of automobiles, home appliances, aerospace, etc.

[0060] The battery's tabs are metal conductors that lead the positive and negative electrodes out of the shell from the battery cell. Therefore, during the battery assembly process, the battery's tabs need to be led out of the shell to serve as contact points when the battery is charged and discharged. However, during the battery assembly process, when the battery cell is assembled in the shell, the tabs are easily bent inside the shell and cannot extend out of the shell, making it difficult to smoothly assemble the battery cell and the shell. This results in a high degree of difficulty in the battery assembly and preparation process, and a low battery preparation yield.

[0061] In order to achieve accurate insertion of the electrode assembly into the shell and smoothly extend the pole ear portion from inside the shell to outside the shell, the pole ear portion can be guided when the electrode assembly is inserted into the shell so that the pole ear portion can smoothly extend from inside the shell to outside the shell.

[0062] Based on the above considerations, the present application provides a battery ear-piercing device and assembly equipment. The battery includes a shell and an electrode assembly, the shell has a accommodating cavity, a through hole connecting the accommodating cavity and the outside is opened on the shell, the electrode assembly is arranged in the accommodating cavity, and the ear-piercing device is used to guide the ear portion of the electrode assembly to extend from the through hole. The ear-piercing device includes a clamping mechanism and a driving mechanism, the clamping mechanism includes a first clamping member and a second clamping member that are movably connected, and a clamping space with an adjustable opening and closing angle can be formed between the first clamping member and the second clamping member. The driving mechanism is transmission-connected to the first clamping member and / or the second clamping member to drive the first clamping member and / or the second clamping member to move to adjust the size of the opening and closing angle. Wherein, the driving mechanism is configured to drive the first clamping member and / or the second clamping member to move, so that the first clamping member and the second clamping member can clamp the ear portion through the through hole and extend out of the accommodating cavity. In this way, under the premise of not affecting or damaging the shell, 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 smoothly penetrate into the through hole, thereby realizing accurate shell insertion of the electrode assembly, effectively improving the working stability and reliability of the pole ear piercing device, effectively reducing the difficulty of battery assembly, and effectively improving the assembly efficiency and yield rate of the battery.

[0063] The battery disclosed in the embodiments of the present application can be used in an electrical device that uses the battery as a power source or in various energy storage systems that use the battery as an energy storage element. The electrical device can be, but is not limited to, a mobile phone, a tablet, a laptop, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, and the like. Among them, the electric toy can include a fixed or mobile electric toy, for example, a game console, an electric car toy, an electric ship toy, and an electric airplane toy, and the like, and the spacecraft can include an airplane, a rocket, a space shuttle, and a spacecraft, and the like.

[0064] For the convenience of description, the following embodiments are described by taking a vehicle 1000a as an example of an electrical device in an embodiment of the present application.

[0065] Please refer to Figure 1 The vehicle 1000a can be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A power supply battery 100a is arranged inside the vehicle 1000a. The power supply battery 100a can be arranged at the bottom, head or tail of the vehicle 1000a. The power supply battery 100a can be used to power the vehicle 1000a. For example, the power supply battery 100a can be used as an operating power source for the vehicle 1000a. The 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, for the starting, navigation and driving power requirements of the vehicle 1000a.

[0066] 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.

[0067] 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.

[0068] 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.

[0069] 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 the battery is discharged and can continue to be used. Each battery 1 may also be a primary battery.

[0070] The battery 1 includes, but is not limited to, lithium ion batteries, sodium ion batteries, sodium lithium ion batteries, lithium metal batteries, sodium metal batteries, lithium sulfur batteries, magnesium ion batteries, nickel hydrogen batteries, nickel cadmium batteries, lead storage batteries, etc. The battery 1 may be cylindrical, flat, rectangular, or in other shapes.

[0071] 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.

[0072] In some embodiments, please refer to Figure 2 The power supply battery 100a may be a battery pack, which includes a box body 10a and a battery 1, wherein the battery 1 or a battery module is accommodated in the box body 10a.

[0073] In some embodiments, the box 10a can be used as a part of the chassis structure of the vehicle 1000a. For example, part of the box 10a can become at least a part of the floor of the vehicle 1000a, or part of the box 10a can become at least a part of the cross beam and longitudinal beam of the vehicle 1000a.

[0074] Please refer to Figure 2The power supply battery 100a includes a box 10a and a battery 1, and the battery 1 is contained in the box 10a. The box 10a is used to provide a storage space for the battery 1, and the box 10a can adopt a variety of structures. In some embodiments, the box 10a can include a first part 11a and a second part 12a, and the first part 11a and the second part 12a cover each other, and the first part 11a and the second part 12a jointly define a storage space for accommodating the battery 1. The second part 12a can be a hollow structure with one end open, and the first part 11a can be a plate-like structure, and the first part 11a covers the open side of the second part 12a, so that the first part 11a and the second part 12a jointly define a storage space; the first part 11a and the second part 12a can also be hollow structures with one side open, and the open side of the first part 11a covers the open side of the second part 12a. Of course, the box 10a formed by the first part 11a and the second part 12a can be a variety of shapes, such as a cylinder, a cuboid, etc.

[0075] In the power supply battery 100a, there can be multiple batteries 1, and the multiple batteries 1 can be connected in series, in parallel, or in mixed connection. Mixed connection means that the multiple batteries 1 are both connected in series and in parallel. The multiple batteries 1 can be directly connected in series, in parallel, or in mixed connection, and then the whole formed by the multiple batteries 1 is accommodated in the box 10a; of course, the power supply battery 100a can also be a battery module formed by connecting multiple batteries 1 in series, in parallel, or in mixed connection, and then the multiple battery modules are connected in series, in parallel, or in mixed connection to form a whole, and accommodated in the box 10a. The power supply battery 100a can also include other structures. For example, the power supply battery 100a can also include a converging component for realizing electrical connection between the multiple batteries 1.

[0076] Please refer to Figure 3 , battery 1 refers to the smallest unit that makes up the battery. Figure 3 As shown, the battery 1 includes a housing 10 , an electrode assembly 20 and other functional components.

[0077] In some embodiments, the housing 10 is used to encapsulate the electrode assembly 20 and electrolyte components. The housing 10 can be a steel housing, an aluminum housing, a plastic housing (such as polypropylene), a composite metal housing (such as a copper-aluminum composite housing), or an aluminum-plastic film.

[0078] The battery 1 also includes 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 an aluminum alloy), so that the bottom cover 30 is not easily deformed when it is squeezed and collided, so that the battery 1 can have a higher structural strength and the safety performance can also be improved. The material of the bottom cover 30 can also be a variety of materials, for example, including but not limited to copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc. 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.

[0079] The housing 10 is a component used to cooperate with the bottom cover 30 to form the internal environment of the battery 1, wherein the formed internal environment can be used to accommodate the electrode assembly 20, the electrolyte and other components. The housing 10 and the bottom cover 30 can be independent components, and an open end 12 can be set on the housing 10, and the internal environment of the battery 1 is formed by covering the open end 12 with the bottom cover 30 at the open end 12. Without limitation, the bottom cover 30 and the housing 10 can also be integrated. Specifically, the bottom cover 30 and the housing 10 can form a common connection surface before other components are put into the shell, and when the interior of the housing 10 needs to be encapsulated, the bottom cover 30 is covered with the housing 10. The housing 10 can be of various shapes and sizes, such as a rectangular parallelepiped, a cylindrical shape, a hexagonal prism, etc. Specifically, the shape of the housing 10 can be determined according to the specific shape and size of the electrode assembly 20. The material of the housing 10 can be various, for example, including but not limited to copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc. Functional components such as electrode terminals can be provided on the housing 10. The electrode terminal can be used to electrically connect to the electrode assembly 20 to output or input electric energy of the battery 1. In some embodiments, the housing 10 can also be provided with a pressure relief mechanism for releasing the internal pressure when the internal pressure or temperature of the battery 1 reaches a threshold value.

[0080] 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.

[0081] In some embodiments, the electrode assembly 20 includes a positive electrode, a negative electrode, and a separator. During the battery charging and discharging process, active ions (such as lithium ions) are inserted and removed back and forth between the positive electrode and the negative electrode. The separator is arranged between the positive electrode and the negative electrode to prevent the positive and negative electrodes from short-circuiting, while allowing the active ions to pass through.

[0082] In some embodiments, the positive electrode may be a positive electrode sheet, and the positive electrode sheet may include a positive electrode current collector and a positive electrode active material disposed on at least one surface of the positive electrode current collector.

[0083] 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 disposed on either or both of the two facing surfaces of the positive electrode current collector.

[0084] 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, stainless steel, copper, aluminum, nickel, carbon electrode, carbon, nickel or titanium, etc., treated with silver surface, may be used. The composite current collector may include a polymer material base and a metal layer. The composite current collector may be formed by forming a metal material (aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, silver and silver alloy, etc.) on a polymer material substrate (such as a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).

[0085] 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 can also be used. These positive electrode active materials can be used alone or in combination of two or more. Among them, 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 LiNi 1 / 3 Co 1 / 3 Mn 1 / 3 O2 (also referred to as NCM 333 )、LiNi 0.5 Co 0.2 Mn 0.3 O2 (also referred to as NCM 523 )、LiNi 0.5 Co 0.25 Mn 0.25 O2 (also referred to as NCM 211 )、LiNi 0.6 Co 0.2 Mn 0.2 O2 (also referred to as NCM 622)、LiNi 0.8 Co 0.1 Mn 0.1 O2 (also referred to as NCM 811 ), lithium nickel cobalt aluminum oxide (such as LiNi 0.85 Co 0.15 Al 0.05 O2) and its modified compounds, etc.

[0086] In some embodiments, the negative electrode may be a negative electrode sheet, and the negative electrode sheet may include a negative electrode current collector.

[0087] As an example, the negative electrode current collector can be a metal foil, a foamed metal or a composite current collector. For example, as a metal foil, aluminum or stainless steel treated with silver, stainless steel, copper, aluminum, nickel, carbon electrode, carbon, nickel or titanium, etc. can be used. The foamed metal can be a foamed nickel, a foamed copper, a foamed aluminum, a foamed alloy, or a foamed carbon, etc. The composite current collector can include a polymer material base and a metal layer. The composite current collector can be formed by forming a metal material (copper, copper alloy, nickel, nickel alloy, titanium, titanium alloy, silver and silver alloy, etc.) on a polymer material substrate (such as a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).

[0088] 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.

[0089] 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 disposed on either or both of the two facing surfaces of the negative electrode current collector.

[0090] As an example, the negative electrode active material may adopt the negative electrode active material for the battery 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 and lithium titanate, etc. The silicon-based material may be selected from at least one of elemental silicon, silicon oxide compounds, silicon-carbon composites, silicon-nitrogen composites and silicon alloys. The tin-based material may be selected from at least one of elemental tin, tin oxide compounds and tin alloys. 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.

[0091] 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.

[0092] In some embodiments, the electrode assembly 20 further includes a separator disposed between the positive electrode and the negative electrode.

[0093] 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 stability and mechanical stability can be selected.

[0094] As an example, the main material of the separator can be selected from at least one of glass fiber, non-woven fabric, polyethylene, polypropylene, polyvinylidene fluoride, and ceramic. The separator can be a single-layer film or a multi-layer composite film, without special restrictions. When the separator is a multi-layer composite film, the materials of each layer can be the same or different, without special restrictions. The separator can be a separate component located between the positive and negative electrodes, or it can be attached to the surface of the positive and negative electrodes.

[0095] In some embodiments, the separator is a solid electrolyte, which is disposed between the positive electrode and the negative electrode and serves to transmit ions and isolate the positive and negative electrodes.

[0096] In some embodiments, the battery 1 further includes an electrolyte, which plays a role of conducting ions between the positive and negative electrodes. The present application has no specific restrictions on the type of electrolyte, which can be selected according to needs. The electrolyte can be liquid, gel or solid.

[0097] The liquid electrolyte includes an electrolyte salt and a solvent.

[0098] In some embodiments, the electrolyte salt can be selected from at least one of lithium hexafluorophosphate, lithium tetrafluoroborate, lithium perchlorate, lithium hexafluoroarsenate, lithium bis(fluorosulfonyl)imide, lithium bis(trifluoromethanesulfonyl)imide, lithium trifluoromethanesulfonate, lithium difluorophosphate, lithium difluorooxalatoborate, lithium dioxalatoborate, lithium difluorodioxalatophosphate, and lithium tetrafluorooxalatophosphate.

[0099] 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, methyl propyl carbonate, ethyl propyl carbonate, butylene carbonate, fluoroethylene carbonate, methyl formate, methyl acetate, ethyl acetate, propyl acetate, methyl propionate, ethyl propionate, propyl propionate, methyl butyrate, ethyl butyrate, 1,4-butyrolactone, cyclopentane, dimethyl sulfone, methyl ethyl sulfone and diethyl sulfone. The solvent can also be selected from ether solvents. Ether solvents can include one or more of ethylene glycol dimethyl ether, ethylene glycol diethyl ether, diethylene glycol dimethyl ether, triethylene glycol dimethyl ether, tetraethylene glycol dimethyl ether, 1,3-dioxolane, tetrahydrofuran, methyltetrahydrofuran, diphenyl ether and crown ether.

[0100] Among them, the gel electrolyte includes a skeleton network with a polymer as the electrolyte, combined with an ionic liquid-lithium salt.

[0101] Among them, solid electrolytes include polymer solid electrolytes, inorganic solid electrolytes, and composite solid electrolytes.

[0102] 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, and the like.

[0103] 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.

[0104] As an example, the composite solid electrolyte is formed by adding an inorganic solid electrolyte filler to a polymer solid electrolyte.

[0105] In some embodiments, the electrode assembly 20 is a wound structure. The positive electrode sheet and the negative electrode sheet are wound into a wound structure.

[0106] In some embodiments, the electrode assembly 20 is provided with a lug portion 21, which can lead current from the electrode assembly 20. The lug portion 21 includes a positive lug and a negative lug. The positive lug and the negative lug can be located together at one end of the main body or at both ends of the main body. During the charge and discharge process of the power supply battery 100a, the positive active material and the negative active material react with the electrolyte, and the lug portion 21 connects the electrode terminal to form a current loop.

[0107] According to some embodiments of the present application, Figure 3 As shown, the battery 1 may include a shell 10 and an electrode assembly 20. The shell 10 may have a accommodating cavity 11 and an open end 12 connected to the accommodating cavity 11. The shell 10 also has a top 13 arranged opposite to the open end 12. The top 13 may be provided with a through hole 14 connecting the accommodating cavity 11 and the outside. A pole ear portion 21 may be provided at one end of the electrode assembly 20. The shell 10 is used to insert the electrode assembly 20 through the open end 12 along a preset assembly direction F1, so that the electrode assembly 20 is accommodated in the accommodating cavity 11 and the pole ear portion 21 is inserted into the through hole 14.

[0108] Alternatively, if Figure 3As shown, the housing 10 may include a pole 15. The pole 15 may be disposed at the top 13 of the housing 10, and a through hole 14 may be opened at the pole 15. The active material coating portion of the electrode assembly 20 is disposed in the housing 10, and the pole ear portion 21 of the electrode assembly 20 may pass through the through hole 14 and be connected to the side of the pole 15 away from the accommodation cavity 11, thereby outputting the electrical energy in the electrode assembly 20 to the outside of the battery 1. The housing 10 may be inserted into the electrode assembly 20 through the open end 12 to accommodate the electrode assembly 20.

[0109] Alternatively, if Figure 3 As shown, 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 easy to fall from the opening end 12 after being put into the shell.

[0110] According to some embodiments of the present application, optionally, Figure 4 As shown, the assembly device 3 includes a shell insertion device 40 and a tab insertion device 2. The shell insertion device 40 is used to insert the electrode assembly 20 into the shell 10 from the open end 12 of the shell 10, and the shell insertion device 40 includes a shell fixing mechanism 41 and a bearing assembly 42. The shell fixing mechanism 41 is used to fix the shell 10, and the bearing assembly 42 is located below the shell fixing mechanism 41 and the tab insertion device 2 in the preset assembly direction F1, and is used to carry the electrode assembly 20.

[0111] Optionally, the electrode assembly 20 and the bottom cover 30 can be stacked on the carrier assembly 42 in sequence according to the preset assembly direction F1, so that after the electrode assembly 20 is placed in the shell, the bottom cover 30 can cover the open end 12. The carrier assembly 42 can also further fix the electrode assembly 20 and the bottom cover 30 to reduce the displacement of the electrode assembly 20 during transportation or shell placement.

[0112] Among them, the shell fixing mechanism 41 and the ear-piercing device 2 are configured to be movable relative to the bearing assembly 42, specifically, they can be lifted and lowered along the preset assembly direction F1 to correspond to being away from or close to the bearing assembly 42. Before clamping the ear portion 21, the ear-piercing device 2 is configured to be able to penetrate into the accommodating cavity 11 through the through hole 14, and the shell fixing mechanism 41 is used to insert the shell 10 into the electrode assembly 20, specifically, the shell fixing mechanism 41 inserts the shell 10 into the electrode assembly 20 during the descent process. In the process of inserting the shell 10 into the electrode assembly 20, the ear-piercing device 2 can guide the ear portion 21 to penetrate into the through hole 14.

[0113] 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-ear device 2 are arranged to be able to descend together along a preset assembly direction F1 relative to the bearing assembly 42, so that the through-ear device 2 can contact the pole ear portion 21 in the accommodating cavity 11. In the second stage, the shell fixing mechanism 41 is arranged to be able to descend along a preset assembly direction F1 relative to the through-ear device 2, so that the through-ear device 2 guides the pole ear portion 21 to penetrate into the through hole 14. Before the first stage, the through-ear device 2 is arranged to be able to descend along a preset assembly direction F1 relative to the shell fixing mechanism 41, and penetrate into the accommodating cavity 11 from the side of the top 13 through the through hole 14, and descend relative to the bearing assembly 42 together with the shell fixing mechanism 41 in the first stage.

[0114] 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 can smoothly extend out of the shell 10, so that the pole ear portion 21 is not easy to block the shell 10 from being inserted into the electrode assembly 20, and the pole ear portion 21 is not easy to collide with the shell 10 to cause damage or fail to smoothly penetrate the through hole 14, thereby achieving accurate shell insertion of the electrode assembly 20, effectively improving the working stability and reliability of the pole ear insertion device 2, effectively reducing the assembly difficulty of the battery 1, and effectively improving the assembly efficiency and yield rate of the battery 1.

[0115] Alternatively, if Figure 5 As shown, in some embodiments, the assembly device 3 includes a tab welding device 50, a pole welding device 60, and a bottom cover welding device 70. The tab welding device 50 is used to weld a plurality of tab sheets of the electrode assembly 20 to form a tab portion 21; the pole welding device 60 is used to weld the tab portion 21 passing through the through hole 14 to the side of the pole 15 of the housing 10 away from the accommodating cavity 11; and the bottom cover welding device 70 is used to weld the bottom cover 30 to the open end 12 of the housing 10.

[0116] 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 part 21, the connection between the pole ear part 21 and the pole post 15, and the connection between the bottom cover 30 and the shell 10, which is beneficial to improving the connection stability of the various parts of the battery 1 and the stability and reliability of the operation of the battery 1.

[0117] 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 by the conveying equipment 4, and the conveying equipment 4 and the assembly equipment 3 together constitute the battery assembly system 5. The conveying equipment 4 includes a conveying line, which can be a conveying structure formed by a conveying roller driven by a motor and a conveying belt, or a conveying structure formed by a conveying chain link driven by a motor, or an AGV conveying trolley, which can realize conveying in at least one direction and can support and ensure the stability of the structure to be assembled.

[0118] The purpose of the pole lug welding device 50 is to form the pole lug portion 21 after pre-welding the pole lug sheet, and it can be an ultrasonic welding device, which can ensure that the pole lug sheet is welded in a clamped stable state. The purpose of the pole column welding device 60 is to achieve the welding of the pole lug portion 21 and the pole 15, and it can be a laser welding device. The purpose of the bottom cover welding device 70 is to achieve the circumferential edge welding of the bottom cover 30 and the opening end 12 of the shell 10, and it is also a laser welding device.

[0119] In addition, the assembly equipment 3 is not limited to including the pole tab welding device 50, the shell insertion device 40, the pole tab piercing device 2, the pole column welding device 60 and the bottom cover welding device 70. Exemplarily, when the number of electrode assemblies 20 is multiple, for example, two, the assembly equipment 3 also includes a pairing device 80, which is used to stack multiple electrode assemblies 20 so that the pole tabs of the two electrode assemblies 20 are roughly opposite, so that the conveying structure can convey the matched electrode assemblies 20 to the pole tab welding device 50 for welding the pole tabs to facilitate the formation of the pole tab portion 21. Exemplarily again, 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.

[0120] According to some embodiments of the present application, Figure 6 As shown, the electrode ear device 2 includes a clamping mechanism 100 and a driving mechanism 200. The clamping mechanism 100 includes a first clamping member 110 and a second clamping member 120 that are movably connected, and a clamping space 201 with an adjustable opening and closing angle A can be formed between the first clamping member 110 and the second clamping member 120. The driving mechanism 200 is in transmission connection with the first clamping member 110 and / or the second clamping member 120 to drive the first clamping member 110 and / or the second clamping member 120 to move to adjust the size of the opening and closing angle A, so that the first clamping member 110 and / or the second clamping member 120 can clamp the electrode ear portion 21 through the through hole 14 and extend out of the accommodating cavity 11.

[0121] In some embodiments, the driving mechanism 200 is in transmission connection with the first clamping member 110 to drive the first clamping member 110 to rotate relative to the second clamping plate to adjust the opening and closing angle A. In some embodiments, the driving mechanism 200 is in transmission connection with the second clamping member 120 to drive the second clamping member 120 to rotate relative to the first clamping plate to adjust the opening and closing angle A. In some embodiments, the driving mechanism 200 is in transmission connection with the first clamping member 110 and the second clamping member 120 to drive the first clamping member 110 and the second clamping member 120 to rotate relative to each other to adjust the opening and closing angle A.

[0122] The first clamping member 110 and the second clamping member 120 are configured to pass through the through hole 14 and extend into the accommodating cavity 11 before clamping the pole ear portion 21. During the process of inserting the housing 10 into the electrode assembly 20, the driving mechanism 200 is used to drive the clamping mechanism 100 to adjust the opening and closing angle A to clamp the pole ear portion 21, so as to be able to clamp the pole ear portion 21 and pass through the through hole 14.

[0123] During the process of inserting the housing 10 into the electrode assembly 20, the driving mechanism 200 is used to drive the first clamping member 110 and the second clamping member 120 to clamp the pole ear portion 21 in the accommodating cavity 11, so as to clamp the pole ear portion 21 and pass it into the through hole 14. The driving mechanism 200 may include a motor, which provides power for the clamping mechanism 100 to clamp the pole ear portion 21, and the motor may be a DC motor or an AC motor.

[0124] In the above manner, by providing a clamping mechanism 100 that can extend into the accommodating cavity 11 to clamp the pole ear portion 21, and providing a driving mechanism 200 that is transmission-connected to the first clamping member 110 and / or the second clamping member 120, it is possible to achieve that during the assembly process of the battery 1, when the shell 10 is inserted into the electrode assembly 20 so that the electrode assembly 20 is accommodated in the accommodating cavity 11, the driving mechanism 200 drives the first clamping member 110 and / or the second clamping member 120 to move to adjust the opening and closing angle A to clamp the pole ear portion 21, without affecting the shell 10. Under the premise of preventing the ear portion 21 from being damaged or disturbed, the ear portion 21 can be guided to smoothly penetrate into the through hole 14, so that the ear portion 21 can smoothly extend out of the shell 10, so that the ear portion 21 is not easy to block the shell 10 from being inserted into the electrode assembly 20, and the ear portion 21 is not easy to collide with the shell 10 to cause damage or fail to smoothly penetrate into the through hole 14, thereby realizing the precise shell entry of the electrode assembly 20, effectively improving the working stability and reliability of the ear insertion device 2, effectively reducing the assembly difficulty of the battery 1, and effectively improving the assembly efficiency and yield rate of the battery 1.

[0125] According to some embodiments of the present application, optionally, Figure 7 As shown, the first clamping member 110 and / or the second clamping member 120 are configured to be rotatable around a preset rotation axis L1.

[0126] In some embodiments, the first clamp 110 is configured to rotate around a preset rotation axis L1, and the second clamp 120 maintains a fixed position. In some embodiments, the second clamp 120 is configured to rotate around a preset rotation axis L1, and the first clamp 110 maintains a fixed position. In some embodiments, the first clamp 110 and the second clamp 120 are configured to rotate around a preset rotation axis L1, and the two can rotate simultaneously to adjust the opening and closing angle A.

[0127] Through the above method, it is possible to adjust the opening and closing angle A of the clamping space 201 by rotating the first clamping member 110 and / or the second clamping member 120. When the opening and closing angle A is small, it is convenient for the pole ear portion 21 to extend into the clamping space 201. When the opening and closing angle A is large, it is convenient to clamp the pole ear portion 21 by the first clamping member 110 and the second clamping member 120, which is conducive to the clamping mechanism 100 to smoothly clamp the pole ear portion 21. The structure is simple and the operation is convenient, which is conducive to improving the clamping efficiency of the clamping mechanism 100 and effectively improving the working reliability of the clamping assembly.

[0128] Further, the preset rotation axis L1 is arranged to be parallel to the top 13 , or perpendicular to the axis of the through hole 14 .

[0129] Through the above-mentioned method, by setting a preset rotation axis L1 parallel to the top 13 or perpendicular to the axis of the through hole 14, it is possible to facilitate the positioning of the clamping mechanism 100 when clamping the pole ear portion 21 using the first clamping member 110 and the second clamping member 120, and when clamping the pole ear portion 21 and guiding the pole ear portion 21, the clamping mechanism 100 only needs to adjust the opening and closing angle A and move along the preset assembly direction F1, without the need for additional adjustment of the angle or posture of the clamping mechanism 100 as a whole relative to the pole ear portion 21, which is beneficial to reducing the possibility of damaging the pole ear portion 21, and is beneficial to improving the clamping efficiency of the clamping mechanism 100, and effectively improving the working reliability of the clamping assembly.

[0130] According to some embodiments of the present application, optionally, Figure 7 and Figure 8As shown, the first clamping member 110 includes a first clamping plate body 111 and a first connecting portion 112, and the first clamping plate body 111 and the first connecting portion 112 are connected. The second clamping member 120 includes a second clamping plate body 121 and a second connecting portion 122, and the second clamping plate body 121 and the second connecting portion 122 are connected. The first clamping plate body 111 and the first connecting portion 112 are bent and connected, and the bent connection between the first clamping plate body 111 and the first connecting portion 112 is rotatably connected to the second connecting portion 122 and / or the second clamping plate body 121. A clamping space 201 is formed between the first clamping plate body 111 and the second clamping plate body 121, and the angle between the first clamping plate body 111 and the second clamping plate body 121 is formed as an opening and closing angle A. The driving mechanism 200 is in transmission connection with the first connecting portion 112 and / or the second connecting portion 122 to drive the first clamping plate body 111 and / or the second clamping plate body 121 to rotate to adjust the size of the opening and closing angle A.

[0131] Through the above method, by setting the first clamping member 110 to include a first clamping plate body 111 and a first connecting portion 112, and setting the second clamping member 120 to include a second clamping plate body 121 and a second connecting portion 122, the first clamping plate body 111 and the second clamping plate body 121 are used to clamp the pole ear portion 21, and the first connecting portion 112 and / or the second connecting portion 122 are used to drive the adjustment of the size of the opening and closing angle A, thereby achieving precise control of the clamping mechanism 100 while improving the structural stability, effectively improving the clamping efficiency of the clamping mechanism 100, and effectively improving the working reliability of the clamping assembly.

[0132] According to some embodiments of the present application, optionally, Figure 7 As shown, the first clamping member 110 is provided with a avoidance hole 202 running through both sides thereof, and the avoidance hole 202 spans the first connection portion 112 and the first clamping plate body 111 through a bent connection. During the rotation of the first clamping plate body 111 and / or the second clamping plate body 121, the avoidance hole 202 is used to avoid the second connection portion 122.

[0133] Through the above method, by setting the avoidance hole 202 to provide space for the relative rotation between the second clamping member 120 and the first clamping member 110, it is convenient to clamp the pole ear portion 21 by adjusting the opening and closing angle A, thereby achieving precise control of the clamping mechanism 100 while improving the structural stability, effectively improving the clamping efficiency of the clamping mechanism 100, and effectively improving the working reliability of the clamping assembly.

[0134] According to some embodiments of the present application, optionally, Figure 8 As shown, the bending connection is provided with a first shaft accommodating hole 203 on both sides of the avoidance hole 202, the second connection portion 122 is provided with a second shaft accommodating hole 204, and the clamping mechanism 100 includes a shaft 130, which is passed through the first shaft accommodating hole 203 and the second shaft accommodating hole 204.

[0135] Through the above method, by passing the rotating shaft 130 through the first rotating shaft accommodating hole 203 and the second rotating shaft accommodating hole 204, the connection and relative rotation between the first clamping member 110 and the second clamping member 120 can be achieved, and the opening and closing angle A can be adjusted while ensuring the structural stability, which is beneficial to improving the clamping efficiency of the clamping mechanism 100 and effectively improving the working reliability of the clamping assembly.

[0136] According to some embodiments of the present application, optionally, Fig. 9 As shown, the first end 205 of the first clamping member 110 and the first end 205 of the second clamping member 120 are connected to each other, and the first clamping member 110 and / or the second clamping member 120 are configured to be elastically deflected around the connection between each other, so that the first clamping member 110 and the second clamping member 120 are rotatably connected. The clamping mechanism 100 also includes a clamping slider 140, which is slidably mounted on the first clamping member 110 and the second clamping member 120.

[0137] Furthermore, if Fig. 9 As shown in FIG. 1 , when the clamping slider 140 is in the release position, the first clamping member 110 and the second clamping member 120 are arranged to be open at an angle from the first end 205 to the second end 206 to form a clamping space 201. The driving mechanism 200 is in transmission connection with the clamping slider 140, and is used to drive the clamping slider 140 to slide along the first clamping member 110 and the second clamping member 120, so that the opening and closing angle A can be changed by the clamping slider 140. When the clamping slider 140 is in the clamping position, as shown in FIG. Fig.10 As shown, the first clamping member 110 and the second clamping member 120 are pressed by the pressing slider 140 so that the opening and closing angle A becomes smaller.

[0138] In the above manner, the driving mechanism 200 drives the clamping slider 140 to slide, so as to adjust the opening and closing angle A of the clamping mechanism 100. The structure is simple, the operation is convenient, and the structural stability is high, which is beneficial to improving the working stability and reliability of the piercing ear device 2.

[0139] According to some embodiments of the present application, optionally, Figure 7 and Fig. 9 As shown, the first clamping member 110 and the second clamping member 120 are arranged in a sheet shape, and the first clamping member 110 and the second clamping member 120 are arranged opposite to each other.

[0140] Through the above method, the first clamping member 110 and the second clamping member 120 are arranged in a sheet shape, which can provide conditions for adjusting the opening and closing angle A while reducing the manufacturing cost, and effectively reduce the possibility that the first clamping member 110 and the second clamping member 120 are too thick to provide a sufficient opening and closing angle A, effectively improve the effectiveness of the clamping mechanism 100, and facilitate the clamping mechanism 100 to smoothly clamp the pole ear portion 21.

[0141] According to some embodiments of the present application, optionally, Fig.11 As shown, the process of inserting the shell 10 into the electrode assembly 20 includes a first stage. In the first stage, the first clamping member 110 and the second clamping member 120 are configured to be able to move relative to the electrode assembly 20 together with the shell 10 so that the pole ear portion 21 can enter the clamping space 201, and the driving mechanism 200 drives the first clamping member 110 and the second clamping member 120 to reduce the opening and closing angle A to clamp the pole ear portion 21.

[0142] Through the above method, by moving the first clamping member 110 and the second clamping member 120 together with the shell 10 relative to the electrode assembly 20 in the first stage, the pole ear portion 21 can enter the clamping space 201 between the first clamping member 110 and the second clamping member 120 while the electrode assembly 20 is gradually inserted into the shell, so that the pole ear portion 21 can be clamped smoothly and fluently, effectively improving the clamping efficiency of the clamping mechanism 100 and the assembly efficiency of the battery 1.

[0143] According to some embodiments of the present application, optionally, Fig.12 As shown, the process of inserting the housing 10 into the electrode assembly 20 includes a second stage located after the first stage. In the second stage, the first clamping member 110 and the second clamping member 120 are configured to be able to move relative to the housing 10 in a direction away from each other and to hold the pole ear portion 21 so that the pole ear portion 21 passes through the through hole 14.

[0144] Through the above method, by moving the first clamping member 110 and the second clamping member 120 relative to the shell 10 in the direction away from each other in the second stage and maintaining the clamping of the pole ear portion 21, the pole ear portion 21 can be guided to penetrate into the through hole 14 while the electrode assembly 20 is further inserted into the shell, and the assembly process is smooth and clear, effectively improving the efficiency of the pole ear portion 21 penetrating into the through hole 14 and the assembly efficiency of the battery 1.

[0145] According to some embodiments of the present application, optionally, Figure 7 and Figure 8As shown, the driving mechanism 200 is used to drive the first clamping member 110 and / or the second clamping member 120 to rotate so that the relative position of the first clamping member 110 and the second clamping member 120 can be switched between the clamping position and the release position. The opening and closing angle A in the clamping position is smaller than the opening and closing angle A in the release position. Before the first stage, the first clamping member 110 and the second clamping member 120 are configured to be able to move relative to the housing 10 to approach the housing 10, and the driving mechanism 200 is used to drive the first clamping member 110 and / or the second clamping member 120 to switch to the clamping position so that the first clamping member 110 and the second clamping member 120 can pass through the through hole 14 and extend into the accommodating cavity 11. The driving mechanism 200 is configured to drive the first clamping member 110 and / or the second clamping member 120 to rotate after the first clamping member 110 and the second clamping member 120 extend into the space of the accommodating cavity 11 so that the relative position is switched from the clamping position to the release position.

[0146] In some embodiments, the driving mechanism 200 is used to drive the first clamping member 110 and the second clamping member 120 to rotate so that the relative position of the first clamping member 110 and the second clamping member 120 can be switched between the clamping position and the release position. When in the clamping position, the first clamping member 110 is in the first clamping position and the second clamping member is in the second clamping position. When in the release position, the first clamping member is in the first release position and the second clamping member is in the second release position. In some embodiments, the driving mechanism 200 is used to drive the first clamping member 110 to rotate so that the relative position of the first clamping member 110 and the second clamping member 120 can be switched between the clamping position and the release position. When in the clamping position, the first clamping member 110 is in the first clamping position and the second clamping member is in the second clamping position. When in the release position, the first clamping member is in the first release position and the second clamping member maintains the second clamping position. In some embodiments, the driving mechanism 200 is used to drive the second clamping member 120 to rotate so that the relative position of the first clamping member 110 and the second clamping member 120 can be switched between a clamping position and a release position. When in the clamping position, the first clamping member 110 is in a first clamping position and the second clamping member is in a second clamping position. When in the release position, the first clamping member maintains the first clamping position and the second clamping member is in a second release position.

[0147] Through the above method, the clamping mechanism 100 in the clamping position in the first stage can smoothly pass through the through hole 14 and extend into the accommodating cavity 11. Compared with the clamping mechanism 100 in the release position and passing through the through hole 14, the space occupied by the clamping mechanism 100 can be effectively reduced, and the area of ​​the required through hole 14 can be reduced, so that the first clamping member 110 and the second clamping member 120 can smoothly pass through the through hole 14, effectively improving the space utilization rate. After the clamping mechanism 100 extends into the accommodating cavity 11, it is convenient for the pole ear part 21 to enter the clamping space 201 of the clamping mechanism 100, and it is convenient to clamp the pole ear part 21, which effectively improves the reliability of the work of the pole ear piercing device 2.

[0148] According to some embodiments of the present application, optionally, Figures 3 to 8As shown, the battery 1 includes a shell 10 and an electrode assembly 20, the shell 10 has a housing 11, and a through hole 14 connecting the housing 11 and the outside, the electrode assembly 20 is arranged in the housing 11, and the electrode lug device 2 is used to guide the electrode lug portion 21 of the electrode assembly 20 to extend from the through hole 14. The electrode lug device 2 includes a clamping mechanism 100 and a driving mechanism 200, the clamping mechanism 100 includes a first clamping member 110 and a second clamping member 120 that are movably connected, and a clamping space 201 with an adjustable opening and closing angle A can be formed between the first clamping member 110 and the second clamping member 120. The driving mechanism 200 is transmission-connected to the first clamping member 110 and / or the second clamping member 120 to drive the first clamping member 110 and / or the second clamping member 120 to move to adjust the size of the opening and closing angle A. The driving mechanism 200 is configured to drive the first clamping member 110 and / or the second clamping member 120 to move, so that the first clamping member 110 and the second clamping member 120 can clamp the pole ear portion 21 through the through hole 14 and extend out of the accommodating cavity 11. The first clamping member 110 and / or the second clamping member 120 are configured to be able to rotate around a preset rotation axis L1. The preset rotation axis L1 is configured to be perpendicular to the axis of the through hole 14. The first clamping member 110 includes a first clamping plate body 111 and a first connecting portion 112, and the first clamping plate body 111 and the first connecting portion 112 are connected. The second clamping member 120 includes a second clamping plate body 121 and a second connecting portion 122, and the second clamping plate body 121 and the second connecting portion 122 are connected. The first clamping member 111 is connected to the first connecting portion 112 by bending, and the bending connection between the first clamping member 111 and the first connecting portion 112 is rotatably connected to the second connecting portion 122 and / or the second clamping member 121. A clamping space 201 is formed between the first clamping member 111 and the second clamping member 121, and the angle between the first clamping member 111 and the second clamping member 121 is formed as an opening angle A. The driving mechanism 200 is connected to the first connecting portion 112 and / or the second connecting portion 122 by transmission to drive the first clamping member 111 and / or the second clamping member 121 to rotate to adjust the size of the opening angle A. The first clamping member 110 is provided with an avoidance hole 202 running through both sides thereof, and the avoidance hole 202 spans the first connecting portion 112 and the first clamping member 111 through the bending connection. During the rotation of the first clamping member 111 and / or the second clamping member 121, the avoidance hole 202 is used to avoid the second connecting portion 122. The bending connection is provided with first shaft 130 accommodating holes 203 on both sides of the avoidance hole 202, and the second connection portion 122 is provided with a second shaft accommodating hole 204. The clamping mechanism 100 includes a shaft, which is passed through the first shaft 130 accommodating hole 203 and the second shaft accommodating hole 204. The first end 205 of the first clamping member 110 and the first end 205 of the second clamping member 120 are connected to each other, and the first clamping member 110 and / or the second clamping member 120 are configured to be able to elastically deflect around the connection between them, so that the first clamping member 110 and the second clamping member 120 are rotatably connected.The clamping mechanism 100 further includes a clamping slider 140, which is slidably mounted on the first clamping member 110 and the second clamping member 120. When the clamping slider 140 is in the release position, the first clamping member 110 and the second clamping member 120 are arranged to be angled from the first end 205 to the second end 206 to form a clamping space 201; the driving mechanism 200 is in transmission connection with the clamping slider 140, and is used to drive the clamping slider 140 to slide along the first clamping member 110 and the second clamping member 120, so that the opening and closing angle A can be changed by the clamping slider 140. The first clamping member 110 and the second clamping member 120 are arranged in a sheet shape, and the first clamping member 110 and the second clamping member 120 are arranged opposite to each other. The process of inserting the housing 10 into the electrode assembly 20 includes a first stage; in the first stage, the first clamping member 110 and the second clamping member 120 are configured to be able to move relative to the electrode assembly 20 together with the housing 10, so that the pole ear portion 21 enters the clamping space 201, and the driving mechanism 200 drives the first clamping member 110 and the second clamping member 120 to reduce the opening and closing angle A to clamp the pole ear portion 21. The process of inserting the housing 10 into the electrode assembly 20 includes a second stage located after the first stage; in the second stage, the first clamping member 110 and the second clamping member 120 are configured to be able to move relative to the housing 10 in a direction away from each other and keep clamping the pole ear portion 21, so that the pole ear portion 21 passes through the through hole 14 and extends out of the accommodating cavity 11. The driving mechanism 200 is used to drive the first clamping member 110 and / or the second clamping member 120 to rotate so that the relative position of the first clamping member 110 and the second clamping member 120 can be switched between the clamping position and the release position; the opening and closing angle A at the clamping position is smaller than the opening and closing angle A at the release position; before the first stage, the first clamping member 110 and the second clamping member 120 are configured to be able to move relative to the shell 10 to approach the shell 10, and the driving mechanism 200 is used to drive the first clamping member 110 and / or the second clamping member 120 to rotate to switch to the clamping position, so that the first clamping member 110 and the second clamping member 120 can pass through the through hole 14 and extend into the accommodating cavity 11; the driving mechanism 200 is configured to drive the first clamping member 110 and / or the second clamping member 120 to rotate after the first clamping member 110 and the second clamping member 120 extend into the space of the accommodating cavity 11 so that the relative position is switched from the clamping position to the release position.

[0149] According to some embodiments of the present application, Figure 4 As shown, the assembly device 3 includes the above-mentioned lug piercing device 2. Such arrangement enables the lug portion 21 to smoothly extend out of the housing 10, which can effectively reduce the assembly difficulty of the battery 1 and effectively improve the assembly efficiency of the battery 1.

[0150] In summary, the embodiments of the present application can enable the pole ear portion 21 to smoothly extend out of the housing 10 , which can effectively reduce the difficulty of assembling the battery 1 and effectively improve the assembly efficiency of the battery 1 .

[0151] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate 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, characterized in that: 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: The clamping mechanism comprises a first clamping member and a second clamping member which are movably connected, and a clamping space with an adjustable opening and closing angle can be formed between the first clamping member and the second clamping member; a driving mechanism, which is in transmission connection with the first clamping member and / or the second clamping member, so as to drive the first clamping member and / or the second clamping member to move so as to adjust the size of the opening and closing angle; Wherein, the driving mechanism is configured to drive the first clamping member and / or the second clamping member to move, so that the first clamping member and the second clamping member can clamp the pole ear portion to pass through the through hole and extend out of the accommodating cavity.

2. The electrode lug device according to claim 1, characterized in that: The first clamping member and / or the second clamping member are configured to be rotatable around a preset rotation axis.

3. The electrode lug device according to claim 2, characterized in that: The preset rotation axis is arranged to be perpendicular to the axis of the through hole.

4. The electrode lug device according to claim 1, characterized in that: The first clamping member includes a first clamping plate body and a first connecting portion, the first clamping plate body and the first connecting portion are connected, the second clamping member includes a second clamping plate body and a second connecting portion, the second clamping plate body and the second connecting portion are connected; the first clamping plate body and the first connecting portion are bent and connected, the bent connection between the first clamping plate body and the first connecting portion is rotatably connected to the second connecting portion and / or the second clamping plate body, the clamping space is formed between the first clamping plate body and the second clamping plate body, and the angle between the first clamping plate body and the second clamping plate body forms the opening and closing angle; the driving mechanism is transmission-connected to the first connecting portion and / or the second connecting portion to drive the first clamping plate body and / or the second clamping plate body to rotate to adjust the size of the opening and closing angle.

5. The electrode lug device according to claim 4, characterized in that: The first clamping member is provided with an avoidance hole penetrating through its two side surfaces, and the avoidance hole spans the first connection portion and the first clamping plate body through the bent connection; during the rotation of the first clamping plate body and / or the second clamping plate body, the avoidance hole is used to avoid the second connection portion.

6. The electrode lug device according to claim 5, characterized in that: The bending connection is provided with a first rotating shaft accommodating hole on both sides of the avoiding hole, the second connecting portion is provided with a second rotating shaft accommodating hole, and the clamping mechanism includes a rotating shaft, and the rotating shaft is passed through the first rotating shaft accommodating hole and the second rotating shaft accommodating hole.

7. The electrode lug device according to claim 1, characterized in that: The first end of the first clamping member and the first end of the second clamping member are connected to each other, and the first clamping member and / or the second clamping member are configured to be able to elastically deflect around the connection between each other, so that the first clamping member and the second clamping member are rotatably connected; The clamping mechanism also includes a clamping slider, which can be slidably mounted on the first clamping member and the second clamping member; when the clamping slider is in a released position, the first clamping member and the second clamping member are arranged to be angled from the first end to the second end to form the clamping space; the driving mechanism is transmission-connected to the clamping slider, and is used to drive the clamping slider to slide along the first clamping member and the second clamping member so that the opening and closing angle can be changed by the clamping slider.

8. The electrode lug device according to claim 7, characterized in that: The first clamping member and the second clamping member are arranged in a sheet shape, and the first clamping member and the second clamping member are arranged opposite to each other.

9. The electrode lug device according to claim 1, characterized in that: The process of inserting the shell into the electrode assembly includes a first stage; in the first stage, the first clamping member and the second clamping member are configured to be able to move relative to the electrode assembly together with the shell so that the pole ear portion enters the clamping space, and the driving mechanism drives the first clamping member and the second clamping member to reduce the opening and closing angle to clamp the pole ear portion.

10. The electrode lug device according to claim 9, characterized in that: The process of inserting the shell into the electrode assembly includes a second stage located after the first stage; in the second stage, the first clamping member and the second clamping member are configured to be able to move relative to the shell in a direction away from each other and keep clamping the pole ear portion, so that the pole ear portion passes through the through hole and extends out of the accommodating cavity.

11. The electrode lug device according to claim 9, characterized in that: The driving mechanism is used to drive the first clamping member and / or the second clamping member to rotate, so that the relative position of the first clamping member and the second clamping member can be switched between a clamping position and a release position; the opening and closing angle at the clamping position is smaller than the opening and closing angle at the release position; Before the first stage, the first clamping member and the second clamping member are configured to be able to move relative to the shell to approach the shell, and the driving mechanism is used to drive the first clamping member and / or the second clamping member to rotate to switch to the clamping position, so that the first clamping member and the second clamping member can pass through the through hole and extend into the accommodating cavity; the driving mechanism is configured to drive the first clamping member and / or the second clamping member to rotate after the first clamping member and the second clamping member extend into the accommodating cavity space so that the relative position is switched from the clamping position to the release position.

12. A battery assembly device, characterized in that: 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; Among them, the shell fixing mechanism and the pole ear device can move relative to the supporting assembly to correspondingly move away from or close to the supporting assembly; the shell fixing mechanism is used to insert the shell into the electrode assembly; the driving mechanism is used to drive the first clamping member and the second clamping member to clamp the pole ear part in the accommodating cavity, so that the pole ear part passes through the through hole and extends out of the accommodating cavity.

13. The assembly device according to claim 12, characterized in that 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.

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