Tab threading device for battery, and assembly apparatus

Abstract

Disclosed in the present application are a tab threading device for a battery, and an assembly apparatus. The battery comprises a case and an electrode assembly, wherein the case is provided with an accommodating cavity and through holes. The tab threading device is used for guiding tab parts of the electrode assembly to extend out through the through holes. The tab threading device comprises a clamping mechanism and a driving mechanism, wherein the clamping mechanism comprises a first clamping member and a second clamping member; and 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 tab parts to pass through the through hole and extend from the accommodating cavity. In this way, the present application can effectively reduce the assembly difficulty of the battery.

Description

Battery tab piercing device and assembly equipment

[0001] This application claims priority to the Chinese patent application with application number "202323280594X" filed on November 30, 2023, and invention name "Battery Tab Piercing Device and Assembly Equipment", which is incorporated herein by reference in its entirety.

Technical field

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

[0003] A battery is a device that converts chemical energy into electrical energy. It contains a cup, tank, or other container, or a portion of a composite container, that contains an electrolyte solution and metal electrodes to generate an electric current. With the advancement of technology, batteries, with their advantages of portability, ease of charge and discharge, and long-term stable power supply, have become widely used in automobiles, home appliances, aerospace, and other fields.

[0004] The battery's tabs are the metal conductors that lead the positive and negative electrodes from the cell out of the casing. Therefore, during battery assembly, these tabs need to be extended outside the casing to serve as contact points during charging and discharging. However, during assembly, when the battery cell is assembled into the casing, the tabs tend to bend inside the casing and become unable to extend outside. This complicates the battery assembly process and results in a low battery yield.

[0005] [Summary of the invention]

[0006] The main technical problem 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.

[0007] In a first aspect, the present application provides a tab-piercing device for a battery, wherein the battery comprises a shell and an electrode assembly, wherein the shell has a housing cavity, and a through hole connecting the housing cavity and the outside is provided on the shell, and the electrode assembly is arranged in the housing cavity, and the tab-piercing device is used to guide the tab portion of the electrode assembly to extend from the through hole. The tab-piercing device comprises a clamping mechanism and a driving mechanism, wherein the clamping mechanism comprises 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. 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 tab portion to pass through the through hole and extend out of the housing cavity.

[0008] Through the above method, by providing a clamping mechanism that can be extended into the accommodating cavity to clamp the pole ear part, and providing 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. Without affecting or 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 and cause damage or fail to penetrate the through hole smoothly, thereby realizing the precise entry of the electrode assembly into the shell, effectively improving the working stability and reliability of the pole ear piercing device, effectively reducing the assembly difficulty of the battery, and effectively improving the assembly efficiency and yield rate of the battery.

[0009] In some embodiments, the first clamping member and / or the second clamping member are configured to be rotatable about a predetermined rotation axis.

[0010] 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 the operation is convenient, which is conducive to improving the clamping efficiency of the clamping mechanism and effectively improving the working reliability of the clamping assembly.

[0011] In some embodiments, the predetermined rotation axis is arranged to be perpendicular to the axis of the through hole.

[0012] 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 clamping mechanism when clamping the pole ear portion using the first clamping member and the second clamping member, and when clamping the pole ear portion, the clamping mechanism only needs to adjust the opening and closing angle, without the need for additional adjustment of 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, 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 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.

[0014] 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 the adjustment of the opening and closing angle, thereby achieving precise control of the clamping mechanism while improving 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 first clamping member is provided with a clearance hole extending through both sides thereof, the clearance hole spanning the first connecting portion and the first clamping plate through the bent connection. During the rotation of the first clamping plate and / or the second clamping plate, the clearance hole is used to avoid the second connecting portion.

[0016] 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 structural stability, effectively improving the clamping efficiency of the clamping mechanism, and effectively improving the working reliability of the clamping assembly.

[0017] 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.

[0018] 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 realized, ensuring the structural stability while realizing the adjustment of the opening and closing angle, which is beneficial to improving the clamping efficiency of the clamping mechanism and effectively improving the working reliability of the clamping assembly.

[0019] In some embodiments, 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 elastically deflected 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 is slidably mounted on the first clamping member and the second clamping member. When the clamping slider is in the release 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 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 clamping member and the second clamping member, so that the opening and closing angles can be changed by the clamping slider.

[0020] In the above manner, 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 conducive to improving the working stability and reliability of the piercing lug device.

[0021] 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.

[0022] Through the above method, the first clamping member and the second clamping member are arranged in a sheet shape, which can reduce the manufacturing cost while providing conditions for adjusting the opening and closing angle, 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.

[0023] 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.

[0024] 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 pole ear portion can enter the clamping space between the first clamping member and the second clamping member while the electrode assembly is gradually inserted into the shell, and 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.

[0025] 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.

[0026] 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. 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.

[0027] 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 switch 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.

[0028] Through the above-described 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, this can effectively reduce the space occupied by the clamping mechanism and the area of ​​the required through-hole, allowing the first clamping member and the second clamping member to smoothly pass through the through-hole, effectively improving space utilization. After extending into the accommodating cavity, the clamping mechanism switches from the clamping position to the release position, facilitating the entry of the pole lug into the clamping space of the clamping mechanism, facilitating the clamping of the pole lug, and effectively improving the reliability of the operation of the pole lug piercing device.

[0029] In a second aspect, the present application provides a battery assembly device, which includes a shell insertion device and a tab insertion device as described above. 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 includes a shell fixing mechanism and a bearing assembly, the shell fixing mechanism is used to fix the shell, and the bearing assembly is used to bear the electrode assembly. The shell fixing mechanism and the tab insertion device can move relative to the bearing assembly to move away from or closer 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 tab portion in the accommodating cavity, so that the tab portion passes through the through hole and extends out of the accommodating cavity.

[0030] Through the above method, when the battery shell is inserted into the electrode assembly, the pole ear of the battery can be smoothly guided to pass through the through hole, so that the pole ear is not easy to block the shell from being inserted into the electrode assembly, and the pole ear is not easy to collide with the shell to cause damage or fail to pass through the through hole smoothly, thereby realizing the precise insertion of the electrode assembly into the shell, effectively improving the working stability and reliability of the pole ear insertion device, effectively reducing the difficulty of battery assembly, and effectively improving the assembly efficiency and yield rate of the battery.

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

[0032] In the above manner, by arranging the pole ear welding device, the pole post welding device and the bottom cover welding device, the assembly equipment can realize the formation of the pole ear portion, the connection between the pole ear portion and the pole post, and the connection between the bottom cover and the shell, which is beneficial to improving the connection stability of the various parts of the battery structure and the stability and reliability of the battery operation.

Brief Description of the Drawings

[0033] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0034] FIG1 is a schematic structural diagram of a vehicle according to one or more embodiments;

[0035] FIG2 is a schematic diagram of an exploded structure of a power supply battery according to one or more embodiments;

[0036] FIG3 is a schematic diagram of an exploded structure of a battery according to one or more embodiments;

[0037] FIG4 is a schematic structural diagram of an assembly device according to one or more embodiments;

[0038] FIG5 is a schematic structural diagram of a battery assembly system according to one or more embodiments;

[0039] FIG6 is a schematic structural diagram of a tab piercing device according to one or more embodiments;

[0040] FIG7 is a schematic structural diagram of the clamping mechanism shown in FIG6 in a released position;

[0041] FIG8 is a schematic structural diagram of the clamping mechanism shown in FIG6 in the clamping position;

[0042] FIG9 is another structural schematic diagram of the clamping mechanism shown in FIG6 in the release position;

[0043] FIG10 is another structural schematic diagram of the clamping mechanism shown in FIG6 in the clamping position;

[0044] FIG11 is a schematic diagram of an implementation scenario of the clamping mechanism shown in FIG6 ;

[0045] FIG12 is a schematic diagram of another implementation scenario of the clamping mechanism shown in FIG6 .

[0046] The accompanying drawings in the specific implementation manner are as follows:

[0047] 1000a vehicles;

[0048] 100a power supply battery; 200a controller; 300a motor;

[0049] 10a housing; 11a first part; 12a second part;

[0050] F1 presets the assembly direction; L1 presets the rotation axis; A opens and closes the angle;

[0051] 1. Battery; 10. Shell; 11. Accommodating cavity; 12. Open end; 13. Top; 14. Through hole; 15. Post; 20. Electrode assembly; 21. Ear portion; 30. Bottom cover; 2. 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; 112. First connecting portion; 120. Second clamping piece; 121. Second clamping plate; 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. Carrying assembly; 50. Ear welding device; 60. Post welding device; 70. Bottom cover welding device; 80. Pairing device; 4. Conveying equipment; 5. Battery assembly system. [Specific implementation method]

[0052] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0053] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0054] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0055] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0056] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0057] 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).

[0058] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0059] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0060] With the advancement of battery technology, batteries are being used in a growing number of fields and are gradually replacing traditional fossil fuels in the automotive powertrain sector. Batteries store chemical energy and controllably convert it into electrical energy. In recyclable batteries, after discharge, the active materials can be activated by recharging for continued use.

[0061] A battery is a device that converts chemical energy into electrical energy. It contains a cup, tank, or other container, or a portion of a composite container, that contains an electrolyte solution and metal electrodes to generate an electric current. With the advancement of technology, batteries, with their advantages of portability, ease of charge and discharge, and long-term stable power supply, have become widely used in automobiles, home appliances, aerospace, and other fields.

[0062] The battery's tabs are the metal conductors that lead the positive and negative electrodes from the cell out of the casing. Therefore, during battery assembly, these tabs need to be extended outside the casing to serve as contact points during charging and discharging. However, during assembly, when the battery cell is assembled into the casing, the tabs tend to bend inside the casing and become unable to extend out, making it difficult to successfully assemble the cell and casing. This results in a more difficult battery assembly process and a lower battery yield rate.

[0063] In order to achieve accurate insertion of the electrode assembly into the shell and smoothly extend the pole ear from inside the shell to outside the shell, the pole ear can be guided when the electrode assembly is inserted into the shell so that the pole ear can smoothly extend from inside the shell to outside the shell.

[0064] Based on the above considerations, the present application provides a tab-piercing device and assembly equipment for a battery. The battery includes a shell and an electrode assembly, the shell having a housing cavity, a through-hole connecting the housing cavity and the outside world, the electrode assembly is arranged in the housing cavity, and the tab-piercing device is used to guide the tab portion of the electrode assembly to extend from the through-hole. The tab-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. 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 tab portion to pass through the through-hole and extend out of the housing cavity. In this way, without affecting or damaging the shell, the pole ear can be guided to smoothly penetrate into the through hole, so that the pole ear can smoothly extend out of the shell, so that the pole ear is not easy to block the shell from being inserted into the electrode assembly, and the pole ear is not easy to collide with the shell and cause damage or 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.

[0065] The battery disclosed in the embodiments of the present application can be used in electrical devices that use the battery as a power source or various energy storage systems that use the battery as an energy storage element. The electrical device can be, but is not limited to, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, and the like. Among them, the electric toy can include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, and the like, and the spacecraft can include airplanes, rockets, space shuttles, and spacecraft, and the like.

[0066] For the convenience of description, the following embodiments are described by taking a vehicle 1000a as an example of an electrical device according to an embodiment of the present application.

[0067] Referring to Figure 1, vehicle 1000a can be a fuel vehicle, a gas vehicle, or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle, etc. A power supply battery 100a is provided inside vehicle 1000a. The power supply battery 100a can be provided at the bottom, head, or tail of vehicle 1000a. The power supply battery 100a can be used to power vehicle 1000a. For example, the power supply battery 100a can serve as an operating power source for vehicle 1000a. Vehicle 1000a can also include a controller 200a and a motor 300a. The controller 200a is used to control the power supply battery 100a to power the motor 300a, for example, to meet the power requirements of vehicle 1000a during startup, navigation, and driving.

[0068] 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.

[0069] 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.

[0070] 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.

[0071] In the embodiment of the present application, the battery 1 may be a secondary battery, which refers to a battery that can be recharged to activate the active material after discharge and continue to be used. Each battery 1 may also be a primary battery.

[0072] The battery 1 includes, but is not limited to, a lithium-ion battery, a sodium-ion battery, a sodium-lithium-ion battery, a lithium metal battery, a sodium metal battery, a lithium-sulfur battery, a magnesium-ion battery, a nickel-metal hydride battery, a nickel-cadmium battery, a lead-acid battery, etc. The battery 1 may be cylindrical, flat, rectangular, or have other shapes.

[0073] 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.

[0074] In some embodiments, referring to FIG. 2 , the power supply battery 100 a may be a battery pack, which includes a box 10 a and a battery 1 , wherein the battery 1 or a battery module is housed in the box 10 a .

[0075] In some embodiments, the box 10a can serve as part of the chassis structure of the vehicle 1000a. For example, a portion of the box 10a can become at least a portion of the floor of the vehicle 1000a, or a portion of the box 10a can become at least a portion of the cross member and longitudinal member of the vehicle 1000a.

[0076] Referring to Figure 2 , a power supply battery 100a includes a housing 10a and a battery 1, which is housed within the housing 10a. The housing 10a provides storage space for the battery 1 and can have various structures. In some embodiments, the housing 10a can include a first portion 11a and a second portion 12a, which overlap each other and together define a storage space for the battery 1. The second portion 12a can be a hollow structure with one end open. The first portion 11a can be a plate-like structure, overlapping the open side of the second portion 12a, so that the first and second portions 11a and 12a together define the storage space. Alternatively, the first and second portions 11a and 12a can each be a hollow structure with one end open, with the open side of the first portion 11a overlapping the open side of the second portion 12a. Of course, the housing 10a formed by the first and second portions 11a and 12a can have various shapes, such as a cylinder or a rectangular parallelepiped.

[0077] In the power supply battery 100a, there may be multiple cells 1, and these cells 1 may be connected in series, in parallel, or in a hybrid configuration. A hybrid configuration refers to a combination of series and parallel connections. The multiple cells 1 may be directly connected in series, in parallel, or in a hybrid configuration, and then the entire structure of the multiple cells 1 is housed within the housing 10a. Alternatively, the power supply battery 100a may be constructed by first connecting multiple cells 1 in series, in parallel, or in a hybrid configuration to form a battery module, which is then connected in series, in parallel, or in a hybrid configuration to form a single structure, which is then housed within the housing 10a. The power supply battery 100a may also include other structures, such as a busbar assembly for electrically connecting the multiple cells 1.

[0078] 3 , the battery 1 is the smallest unit of the battery. As shown in FIG3 , the battery 1 includes a housing 10 , an electrode assembly 20 , and other functional components.

[0079] In some embodiments, the housing 10 is used to encapsulate the electrode assembly 20 and the electrolyte and other components. The housing 10 can be a steel housing, an aluminum housing, a plastic housing (such as polypropylene), a composite metal housing (such as a copper-aluminum composite housing), or an aluminum-plastic film.

[0080] 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 aluminum alloy), so that the bottom cover 30 is not easily deformed when squeezed or collided, so that the battery 1 can have a higher structural strength and improved safety performance. The material of the bottom cover 30 can also be various, for example, including but not limited to copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc. In some embodiments, an insulating component can also be provided on the inner side of the bottom cover 30, and the insulating component can be used to isolate the electrical connection components in the shell 10 from the bottom cover 30 to reduce the risk of short circuit. Exemplarily, the insulating component can be plastic, rubber, etc.

[0081] The housing 10 is a component that cooperates with the bottom cover 30 to form the internal environment of the battery 1. This internal environment can accommodate the electrode assembly 20, electrolyte, and other components. The housing 10 and bottom cover 30 can be separate components. An open end 12 can be provided on the housing 10, and the bottom cover 30 is placed over the open end 12 to form the internal environment of the battery 1. Alternatively, the bottom cover 30 and the housing 10 can be integrated. Specifically, the bottom cover 30 and the housing 10 can form a common connection surface before other components are inserted into the housing. When the interior of the housing 10 needs to be enclosed, the bottom cover 30 is placed over the housing 10. The housing 10 can be of various shapes and sizes, such as a rectangular parallelepiped, a cylinder, or a hexagonal prism. Specifically, the shape of the housing 10 can be determined based on the specific shape and size of the electrode assembly 20. The housing 10 can be made of a variety of materials, including but not limited to copper, iron, aluminum, stainless steel, aluminum alloy, and plastic. Functional components such as electrode terminals can be provided on the housing 10. The electrode terminals can be used to electrically connect to the electrode assembly 20 for outputting or inputting electrical energy into or out of the battery 1. In some embodiments, the housing 10 can also be provided with a pressure relief mechanism for releasing internal pressure when the internal pressure or temperature of the battery 1 reaches a threshold.

[0082] 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.

[0083] In some embodiments, the electrode assembly 20 includes a positive electrode, a negative electrode, and a separator. During the battery's charge and discharge processes, active ions (e.g., lithium ions) are intercalated and released between the positive and negative electrodes. The separator, positioned between the positive and negative electrodes, prevents short circuits between the positive and negative electrodes while allowing the active ions to pass through.

[0084] In some embodiments, the positive electrode may be a positive electrode sheet, which may include a positive electrode current collector and a positive electrode active material disposed on at least one surface of the positive electrode current collector.

[0085] As an example, the positive electrode current collector has two surfaces facing each other in its thickness direction, and the positive electrode active material is provided on either or both of the two facing surfaces of the positive electrode current collector.

[0086] As an example, the positive electrode current collector may be a metal foil or a composite current collector. For example, as the metal foil, aluminum or stainless steel with a silver surface treatment, stainless steel, copper, aluminum, nickel, carbon electrode, carbon, nickel or titanium, etc. may be used. The composite current collector may include a polymer material base layer and a metal layer. The composite current collector may be formed by forming a metal material (aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, silver and silver alloy, etc.) on a polymer material substrate (such as a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).

[0087] As an example, the positive electrode active material may include at least one of the following materials: lithium-containing phosphates, lithium transition metal oxides, and their respective modified compounds. However, the present application is not limited to these materials, and other traditional materials that can be used as positive electrode active materials for batteries may also be used. These positive electrode active materials may be used alone or in combination of two or more. Examples of lithium-containing phosphates may include, but are not limited to, at least one of lithium iron phosphate (such as LiFePO4 (also referred to as LFP)), a composite material of lithium iron phosphate and carbon, lithium manganese phosphate (such as LiMnPO4), a composite material of lithium manganese phosphate and carbon, lithium iron manganese phosphate, and a composite material of lithium iron manganese phosphate and carbon. Examples of lithium transition metal oxides may include, but are not limited to, lithium cobalt oxide (such as LiCoO2), lithium nickel oxide (such as LiNiO2), lithium manganese oxide (such as LiMnO2, LiMn2O4), lithium nickel cobalt oxide, lithium manganese cobalt oxide, lithium nickel manganese oxide, lithium nickel cobalt manganese oxide (such as LiNi1 / 3Co1 / 3Mn1 / 3O2 (also referred to as NCM333), LiNi0.5Co0.2Mn0.3O2 (also referred to as NCM523), LiNi0.5Co0.25Mn0.25O2 (also referred to as NCM211), LiNi0.6Co0.2Mn0.2O2 (also referred to as NCM622), LiNi0.8Co0.1Mn0.1O2 (also referred to as NCM811), lithium nickel cobalt aluminum oxide (such as LiNi0.85Co0.15Al0.05O2) and at least one of their modified compounds.

[0088] In some embodiments, the negative electrode may be a negative electrode sheet, and the negative electrode sheet may include a negative electrode current collector.

[0089] As an example, the negative electrode current collector may be a metal foil, a metal foam, or a composite current collector. For example, as the metal foil, aluminum or stainless steel with a silver surface treatment, stainless steel, copper, aluminum, nickel, carbon electrode, carbon, nickel, or titanium, etc. may be used. The metal foam may be nickel foam, copper foam, aluminum foam, alloy foam, or carbon foam, etc. The composite current collector may include a polymer material base layer and a metal layer. The composite current collector may be formed by forming a metal material (copper, copper alloy, nickel, nickel alloy, titanium, titanium alloy, silver, and silver alloy, etc.) on a polymer material substrate (such as a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).

[0090] 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.

[0091] As an example, the negative electrode current collector has two surfaces facing each other in its thickness direction, and the negative electrode active material is provided on either or both of the two facing surfaces of the negative electrode current collector.

[0092] As an example, the negative electrode active material may be a negative electrode active material for a battery that is well known in the art. As an example, the negative electrode active material may include at least one of the following materials: artificial graphite, natural graphite, soft carbon, hard carbon, silicon-based materials, tin-based materials, lithium titanate, etc. The silicon-based material may be selected from at least one of elemental silicon, silicon oxide compounds, silicon-carbon composites, silicon-nitrogen composites, and silicon alloys. The tin-based material may be selected from at least one of elemental tin, tin oxide compounds, and tin alloys. However, the present application is not limited to these materials, and other traditional materials that can be used as negative electrode active materials for batteries may also be used. These negative electrode active materials may be used alone or in combination of two or more.

[0093] 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.

[0094] In some embodiments, the electrode assembly 20 further includes a separator disposed between the positive electrode and the negative electrode.

[0095] In some embodiments, the separator is a separator. The present application has no particular limitation on the type of separator, and any known separator with a porous structure having good chemical and mechanical stability can be selected.

[0096] As an example, the primary material of the separator can be selected from at least one of glass fiber, non-woven fabric, polyethylene, polypropylene, polyvinylidene fluoride, and ceramic. The separator can be a single-layer film or a multi-layer composite film, without particular limitation. When the separator is a multi-layer composite film, the materials of each layer can be the same or different, without particular limitation. The separator can be a separate component positioned between the positive and negative electrodes, or it can be attached to the surfaces of the positive and negative electrodes.

[0097] In some embodiments, the separator is a solid electrolyte, which is disposed between the positive electrode and the negative electrode and serves to transport ions and isolate the positive and negative electrodes.

[0098] In some embodiments, battery 1 further includes an electrolyte, which acts as a conductive medium between the positive and negative electrodes. The present application does not specifically limit the type of electrolyte, and the electrolyte may be selected based on needs. The electrolyte may be liquid, gel, or solid.

[0099] The liquid electrolyte includes an electrolyte salt and a solvent.

[0100] In some embodiments, the electrolyte salt may be selected from at least one of lithium hexafluorophosphate, lithium tetrafluoroborate, lithium perchlorate, lithium hexafluoroarsenate, lithium bis(fluorosulfonyl)imide, lithium bis(trifluoromethanesulfonyl)imide, lithium trifluoromethanesulfonate, lithium difluorophosphate, lithium difluorooxalatoborate, lithium dioxalatoborate, lithium difluorodioxalatophosphate, and lithium tetrafluorooxalatophosphate.

[0101] In some embodiments, solvent can be selected from at least one of ethylene carbonate, propylene carbonate, ethyl methyl carbonate, diethyl carbonate, dimethyl carbonate, dipropyl carbonate, methylpropyl carbonate, ethylpropyl carbonate, butylene carbonate, fluoroethylene carbonate, methyl formate, methyl acetate, ethyl acetate, propyl acetate, methyl propionate, ethyl propionate, propyl propionate, methyl butyrate, ethyl butyrate, 1,4-butyrolactone, cyclopentane, dimethyl sulfone, methyl ethyl sulfone and diethyl sulfone. 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.

[0102] Among them, the gel electrolyte includes a skeleton network with a polymer as the electrolyte, combined with an ionic liquid-lithium salt.

[0103] Among them, solid electrolytes include polymer solid electrolytes, inorganic solid electrolytes, and composite solid electrolytes.

[0104] As an example, the polymer solid electrolyte may be polyether (polyethylene oxide), polysiloxane, polycarbonate, polyacrylonitrile, polyvinylidene fluoride, polymethyl methacrylate, a single ion polymer, polyionic liquid-lithium salt, cellulose, or the like.

[0105] 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.

[0106] As an example, a composite solid electrolyte is formed by adding an inorganic solid electrolyte filler to a polymer solid electrolyte.

[0107] In some embodiments, the electrode assembly 20 is a wound structure in which the positive electrode sheet and the negative electrode sheet are wound into a wound structure.

[0108] In some embodiments, the electrode assembly 20 includes tabs 21 that conduct current from the electrode assembly 20. The tabs 21 include a positive tab and a negative tab. The positive and negative tabs can be located together at one end of the main body or separately at opposite ends. During the charge and discharge process of the power supply battery 100a, the positive and negative active materials react with the electrolyte, and the tabs 21 connect to the electrode terminals to form a current loop.

[0109] According to some embodiments of the present application, as shown in Figure 3, the battery 1 may include a shell 10 and an electrode assembly 20, the shell 10 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 world, one end of the electrode assembly 20 may be provided with a pole ear portion 21, 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.

[0110] Optionally, as shown in FIG3 , the housing 10 may include a post 15 . The post 15 may be disposed at the top 13 of the housing 10 , and a through-hole 14 may be provided in the post 15 . The active material coating portion of the electrode assembly 20 is disposed within the housing 10 , and the tab 21 of the electrode assembly 20 may pass through the through-hole 14 and connect to the side of the post 15 facing away from the accommodating cavity 11 , thereby outputting the electrical energy within the electrode assembly 20 to the outside of the battery 1 . The housing 10 may be inserted into the electrode assembly 20 through the open end 12 to accommodate the electrode assembly 20 .

[0111] Optionally, as shown in FIG3 , the battery 1 may further include a bottom cover 30 , which is used to cover the opening end 12 so that the electrode assembly 20 is not likely to fall out of the opening end 12 after being placed in the shell.

[0112] According to some embodiments of the present application, optionally, as shown in FIG4 , the assembly device 3 includes a shell insertion device 40 and a tab insertion device 2. The shell insertion device 40 is used to insert the electrode assembly 20 into the shell 10 from the open end 12 of the shell 10. The shell insertion device 40 includes a shell fixing mechanism 41 and a carrying assembly 42. The shell fixing mechanism 41 is used to fix the shell 10. The carrying assembly 42 is located below the shell fixing mechanism 41 and the tab insertion device 2 in the preset assembly direction F1 and is used to carry the electrode assembly 20.

[0113] Optionally, the electrode assembly 20 and the bottom cover 30 can be stacked sequentially on the carrier assembly 42 according to a preset assembly direction F1, so that after the electrode assembly 20 is placed in the shell, the bottom cover 30 can cover the open end 12. The carrier assembly 42 can also further secure the electrode assembly 20 and the bottom cover 30 to reduce the displacement of the electrode assembly 20 during transportation or shell placement.

[0114] The housing fixing mechanism 41 and the tab device 2 are configured to be movable relative to the support assembly 42, specifically, they can be raised and lowered along a preset assembly direction F1 to move away from or approach the support assembly 42. Before clamping the tab portion 21, the tab device 2 is configured to penetrate into the accommodating cavity 11 through the through hole 14. The housing fixing mechanism 41 is used to insert the housing 10 into the electrode assembly 20, specifically, the housing fixing mechanism 41 inserts the housing 10 into the electrode assembly 20 during the descent process. During the process of inserting the housing 10 into the electrode assembly 20, the tab device 2 can guide the tab portion 21 into the through hole 14.

[0115] Furthermore, the process of inserting the shell 10 into the electrode assembly 20 includes a first stage and a second stage arranged in a sequential order. In the first stage, the shell fixing mechanism 41 and the through-tab device 2 are configured to be able to descend together along a preset assembly direction F1 relative to the supporting assembly 42, so that the through-tab device 2 can contact the pole lug portion 21 in the accommodating cavity 11. In the second stage, the shell fixing mechanism 41 is configured to be able to descend along a preset assembly direction F1 relative to the through-tab device 2, so that the through-tab device 2 guides the pole lug portion 21 to penetrate into the through hole 14. Before the first stage, the through-tab device 2 is configured to be able to descend along the preset assembly direction F1 relative to the shell fixing mechanism 41, and penetrate into the accommodating cavity 11 from the side of the top 13 through the through hole 14, and descend relative to the supporting assembly 42 together with the shell fixing mechanism 41 in the first stage.

[0116] 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 penetrate the through hole 14 smoothly, thereby realizing the precise insertion of the electrode assembly 20 into the shell, effectively improving the working stability and reliability of the pole ear insertion device 2, effectively reducing the assembly difficulty of the battery 1, and effectively improving the assembly efficiency and yield of the battery 1.

[0117] Optionally, as shown in FIG5 , in some embodiments, the assembly device 3 includes a tab welding device 50, a post welding device 60, and a bottom cover welding device 70. The tab welding device 50 is used to weld the multiple tabs of the electrode assembly 20 to form the tab portion 21; the post welding device 60 is used to weld the tab portion 21 passing through the through hole 14 to the side of the post 15 of the housing 10 facing away from the accommodating cavity 11; and the bottom cover welding device 70 is used to weld the bottom cover 30 to the open end 12 of the housing 10.

[0118] In the above manner, by setting up the pole ear welding device 50, the pole post welding device 60 and the bottom cover welding device 70, the assembly equipment 3 can realize the formation of the pole ear portion 21, the connection between the pole ear portion 21 and the pole post 15, and the connection between the bottom cover 30 and the shell 10, which is beneficial to improving the connection stability of the various parts of the battery 1 and the stability and reliability of the battery 1.

[0119] It should be noted that in this embodiment, the structures to be assembled can be transported between the various workstations of the assembly equipment 3 via a conveyor device 4. The conveyor device 4 and the assembly equipment 3 together constitute the battery assembly system 5. The conveyor device 4 includes a conveyor line, which can be a conveyor structure formed by motor-driven conveyor rollers and a conveyor belt, a conveyor structure formed by motor-driven conveyor chain links, or an AGV conveyor vehicle. It only needs to be able to achieve conveyance in at least one direction and support and ensure the stability of the structures to be assembled.

[0120] The purpose of the tab welding device 50 is to pre-weld the tabs to form the tab portion 21. It can be an ultrasonic welding device that ensures the tabs are welded in a stable, clamped state. The purpose of the pole welding device 60 is to weld the tab portion 21 to the pole 15. It can be a laser welding device. The purpose of the bottom cover welding device 70 is to weld the circumferential edge of the bottom cover 30 to the open end 12 of the housing 10. It is also a laser welding device.

[0121] In addition, the assembly equipment 3 is not limited to including the tab welding device 50, the shell insertion device 40, the tab piercing device 2, the pole welding device 60 and the bottom cover welding device 70. For example, when the number of electrode assemblies 20 is multiple, for example, two, the assembly equipment 3 also includes a matching device 80, which is used to stack multiple electrode assemblies 20 so that the tabs of the two electrode assemblies 20 are roughly opposite to each other, so that the conveying structure can convey the matched electrode assemblies 20 to the tab welding device 50 for welding the tabs to facilitate the formation of the tab portion 21. For example, in order to ensure the reliability of the battery assembly process, dust removal, NG detection stations, etc. can also be added between any two adjacent stations, which is not limited in this embodiment.

[0122] According to some embodiments of the present application, as shown in FIG6 , the tab piercing 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 tab portion 21 through the through hole 14 and extend out of the accommodating cavity 11.

[0123] In some embodiments, the drive 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 drive 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 drive 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.

[0124] 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 electrode 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 electrode ear portion 21 so that the electrode ear portion 21 can be clamped and inserted into the through hole 14.

[0125] 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 electrode ear portion 21 in the accommodating cavity 11, so as to clamp the electrode ear portion 21 and pass it into the through hole 14. The driving mechanism 200 may include a motor, which provides power to the clamping mechanism 100 to clamp the electrode ear portion 21. The motor may be a DC motor or an AC motor.

[0126] 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 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 entry of the electrode assembly 20 into the shell, effectively improving the working stability and reliability of the ear-piercing device 2, effectively reducing the assembly difficulty of the battery 1, and effectively improving the assembly efficiency and yield rate of the battery 1.

[0127] According to some embodiments of the present application, optionally, as shown in FIG. 7 , the first clamping member 110 and / or the second clamping member 120 is configured to be rotatable around a preset rotation axis L1 .

[0128] In some embodiments, the first clamping member 110 is configured to rotate about a predetermined rotation axis L1, while the second clamping member 120 maintains a fixed position. In some embodiments, the second clamping member 120 is configured to rotate about a predetermined rotation axis L1, while the first clamping member 110 maintains a fixed position. In some embodiments, the first clamping member 110 and the second clamping member 120 are configured to rotate about a predetermined rotation axis L1, and both can rotate simultaneously to adjust the opening and closing angle A.

[0129] 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 use the first clamping member 110 and the second clamping member 120 to clamp the pole ear portion 21, which is conducive to the clamping mechanism 100 to smoothly clamp the pole ear portion 21. It has a simple structure and is easy to operate, which is conducive to improving the clamping efficiency of the clamping mechanism 100 and effectively improving the working reliability of the clamping assembly.

[0130] Furthermore, the preset rotation axis L1 is set to be parallel to the top 13 , or perpendicular to the axis of the through hole 14 .

[0131] In the above manner, 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, 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, as shown in Figures 7 and 8, the first clamping member 110 includes a first clamping plate body 111 and a first connecting portion 112, the first clamping plate body 111 and the first connecting portion 112 being connected, and the second clamping member 120 includes a second clamping plate body 121 and a second connecting portion 122, the second clamping plate body 121 and the second connecting portion 122 being connected. The first clamping plate body 111 and the first connecting portion 112 are connected by bending, 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 so as to adjust the size of the opening and closing angle A.

[0133] In the above manner, 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.

[0134] According to some embodiments of the present application, as shown in FIG7 , the first clamping member 110 may optionally have a clearance hole 202 extending through both sides thereof. The clearance hole 202 extends across the first connecting portion 112 and the first clamping plate 111 via a bent connection. During the rotation of the first clamping plate 111 and / or the second clamping plate 121, the clearance hole 202 is used to avoid the second connecting portion 122.

[0135] In the above manner, 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.

[0136] According to some embodiments of the present application, optionally, as shown in Figure 8, the bending connection is provided with a first rotating shaft accommodating hole 203 on both sides of the avoidance hole 202, and the second connecting portion 122 is provided with a second rotating shaft accommodating hole 204, and the clamping mechanism 100 includes a rotating shaft 130, and the rotating shaft 130 is passed through the first rotating shaft accommodating hole 203 and the second rotating shaft accommodating hole 204.

[0137] 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, ensuring the structural stability while achieving the adjustment of the opening and closing angle A, which is beneficial to improving the clamping efficiency of the clamping mechanism 100 and effectively improving the working reliability of the clamping assembly.

[0138] According to some embodiments of the present application, optionally, as shown in FIG9 , 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 about the connection point, so that the first clamping member 110 and the second clamping member 120 are rotatably connected. The clamping mechanism 100 also includes a pressing slider 140 that is slidably mounted on the first clamping member 110 and the second clamping member 120.

[0139] Furthermore, as shown in Figure 9 , when the pressing slider 140 is in the released position, the first clamping member 110 and the second clamping member 120 are arranged at an angled relationship from the first end 205 toward the second end 206 to form a clamping space 201. The drive mechanism 200 is in transmission connection with the pressing slider 140 and is configured to drive the pressing slider 140 to slide along the first clamping member 110 and the second clamping member 120, thereby enabling the pressing slider 140 to change the opening and closing angle A. When the pressing slider 140 is in the clamping position, as shown in Figure 10 , the first clamping member 110 and the second clamping member 120 are compressed by the pressing slider 140, causing the opening and closing angle A to decrease.

[0140] In the above manner, the driving mechanism 200 drives the sliding of the clamping slider 140 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 conducive to improving the working stability and reliability of the piercing lug device 2.

[0141] According to some embodiments of the present application, optionally, as shown in FIG. 7 and FIG. 9 , 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.

[0142] By adopting 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, effectively reducing 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 improving the effectiveness of the clamping mechanism 100, and facilitating the clamping mechanism 100 to smoothly clamp the pole ear portion 21.

[0143] According to some embodiments of the present application, optionally, as shown in Figure 11, 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.

[0144] In the above manner, 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, and 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.

[0145] According to some embodiments of the present application, as shown in FIG12 , the process of inserting the housing 10 into the electrode assembly 20 optionally includes a second stage following the first stage. In the second stage, the first clamping member 110 and the second clamping member 120 are configured to move relative to the housing 10 in a direction away from each other and to maintain the clamping of the electrode lug 21, so that the electrode lug 21 passes through the through hole 14.

[0146] In the above manner, 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 pass through the through hole 14 while the electrode assembly 20 is further inserted into the shell. The assembly process is smooth and clear, effectively improving the efficiency of the pole ear portion 21 passing through the through hole 14 and the assembly efficiency of the battery 1.

[0147] According to some embodiments of the present application, as shown in Figures 7 and 8, a drive mechanism 200 is optionally configured 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 switch between a clamped position and a released position. The opening and closing angle A in the clamped position is smaller than the opening and closing angle A in the released position. Before the first stage, the first clamping member 110 and the second clamping member 120 are configured to move relative to the housing 10 to approach the housing 10, and the drive mechanism 200 is configured to drive the first clamping member 110 and / or the second clamping member 120 to switch to the clamped 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. After the first clamping member 110 and the second clamping member 120 extend into the accommodating cavity 11, the drive mechanism 200 is configured to drive the first clamping member 110 and / or the second clamping member 120 to rotate so that the relative position switches from the clamped position to the released position.

[0148] 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 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 is in a first release position and the second clamping member is in a 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 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 is in a 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 positions 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.

[0149] Through the above-described 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 penetrating the through-hole 14, the space occupied by the clamping mechanism 100 can be effectively reduced, and the area of ​​the through-hole 14 required 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 space utilization. After extending into the accommodating cavity 11, the clamping mechanism 100 switches from the clamping position to the release position, facilitating the entry of the pole lug portion 21 into the clamping space 201 of the clamping mechanism 100, facilitating the clamping of the pole lug portion 21, and effectively improving the reliability of the operation of the pole lug piercing device 2.

[0150] According to some embodiments of the present application, optionally, as shown in Figures 3 to 8, the battery 1 includes a shell 10 and an electrode assembly 20, the shell 10 has a receiving cavity 11, and a through hole 14 connecting the receiving cavity 11 and the outside, the electrode assembly 20 is disposed in the receiving cavity 11, and the tab device 2 is used to guide the tab portion 21 of the electrode assembly 20 to extend from the through hole 14. The tab 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. 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 a bend. The bend 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. The angle between the first clamping member 111 and the second clamping member 121 forms an opening / closing angle A. A driving mechanism 200 is in driving connection with the first connecting portion 112 and / or the second connecting portion 122 to rotate the first clamping member 111 and / or the second clamping member 121 to adjust the opening / closing angle A. The first clamping member 110 is provided with a clearance hole 202 extending through both sides thereof. The clearance hole 202 spans the first connecting portion 112 and the first clamping member 111 at the bend. During rotation of the first clamping member 111 and / or the second clamping member 121, the clearance hole 202 allows the second connecting portion 122 to clear the clearance. The bending connection is provided with a first shaft 130 accommodating hole 203 on both sides of the avoidance hole 202, and the second connecting 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 elastically deflected about the connection point, 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. When the clamping slider 140 is in the released position, the first clamping member 110 and the second clamping member 120 are arranged 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. 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 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 arranged to be able to move relative to the electrode assembly 20 together with the shell 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 shell 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 arranged to be able to move relative to the shell 10 in a direction away from each other and maintain the clamping of 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 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 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.

[0151] According to some embodiments of the present application, as shown in FIG4 , the assembly device 3 includes the above-mentioned tab-piercing device 2. This arrangement allows the tab portion 21 to smoothly extend out of the housing 10, effectively reducing the difficulty of assembling the battery 1 and improving the assembly efficiency of the battery 1.

[0152] In summary, the embodiments of the present application can enable the tab portion 21 to smoothly extend out of the housing 10 , which can effectively reduce the difficulty of assembling the battery 1 and effectively improve the assembly efficiency of the battery 1 .

[0153] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery 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 ear 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 8, 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 movable relative to the housing to approach the housing, 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. The first clamping member and the second clamping member are enabled to 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 releasing 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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