Battery tab penetrating device, assembling equipment and assembling method

Abstract

The invention discloses a tab penetrating device, assembling equipment and an assembling method of a battery, the battery comprises a shell and an electrode assembly, the shell is provided with a containing cavity, a through hole communicating the containing cavity with the outside is formed in the shell, the electrode assembly is arranged in the containing cavity, and the tab penetrating device is used for guiding a tab part of the electrode assembly to extend out of the through hole. The tab penetrating device comprises a clamping mechanism and a driving mechanism, the clamping mechanism is used for clamping the tab part, and the driving mechanism is in transmission connection with the clamping mechanism and used for driving the clamping mechanism to move. And the driving mechanism is configured to drive the clamping mechanism to clamp the tab part in the accommodating cavity, and the tab part extends out of the accommodating cavity through the through hole. Through the mode, the assembly difficulty of the battery can be effectively reduced.

Description

Technical Field

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

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

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

[0004] In view of the above problems, the present application provides a battery ear insertion device, assembly equipment and assembly method, so that the ear part can smoothly extend out of the shell, which can effectively reduce the difficulty of battery assembly and effectively improve the battery assembly efficiency.

[0005] In a first aspect, the present application provides a battery ear-piercing device, the battery comprising a shell and an electrode assembly, the shell having a receiving cavity, a through hole connecting the receiving cavity and the outside world being provided on the shell, the electrode assembly being arranged in the receiving cavity, and the ear-piercing device being used to guide the ear portion of the electrode assembly to extend out of the through hole. The ear-piercing device comprises a clamping mechanism and a driving mechanism, the clamping mechanism being used to clamp the ear portion, the driving mechanism being connected to the clamping mechanism in a transmission manner and being used to drive the clamping mechanism to move. The driving mechanism is configured to drive the clamping mechanism to clamp the ear portion in the receiving cavity and extend out of the receiving cavity through the through hole.

[0006] Through the above method, by setting a clamping mechanism that can clamp the pole ear part, and setting a driving mechanism that transmits and connects the clamping mechanism, it can be achieved that during the assembly process of the battery, when the shell is inserted into the electrode assembly, the driving mechanism drives the clamping mechanism to clamp the pole ear part, and under the premise of not affecting and damaging the shell, the pole ear part can be guided to smoothly penetrate into the through hole, so that the pole ear part can smoothly extend out of the shell, so that the pole ear part is not easy to block the shell from being inserted into the electrode assembly, and the pole ear part is not easy to collide with the shell to cause damage or fail to smoothly penetrate into the through hole, thereby realizing accurate shell insertion of the electrode assembly, effectively improving the working stability and reliability of the pole ear piercing device, effectively reducing the difficulty of battery assembly, and effectively improving the assembly efficiency and yield rate of the battery.

[0007] In some embodiments, the clamping mechanism includes a plurality of clamping plates, and the driving mechanism is in transmission connection with at least one of the plurality of clamping plates and is configured to drive the at least one clamping plate to move. Moreover, the driving mechanism is configured to be able to drive the plurality of clamping plates to clamp the circumferential direction of the tab portion so that the tab portion can extend out of the accommodating cavity, and is configured to enable the plurality of clamping plates to loosen the circumferential direction of the tab portion to release the tab portion.

[0008] In the above manner, by providing a plurality of clamping plates to clamp the tab portion, the efficiency of clamping and releasing the tab portion can be improved, and clamping the circumferential direction of the tab portion by the plurality of clamping plates can improve the clamping stability and effectively improve the reliability of the clamping mechanism.

[0009] In some embodiments, the plurality of clamping plates include a first clamping plate and a second clamping plate, and the driving mechanism is configured to drive the first clamping plate and the second clamping plate to abut and clamp both sides in the thickness direction of the tab portion.

[0010] In the above manner, by providing the first clamping plate and the second clamping plate that can clamp both sides in the thickness direction of the tab portion, the clamping of the tab portion can be achieved without damaging the tab portion, which is beneficial to improving the reliability of the clamping mechanism.

[0011] In some embodiments, the driving mechanism is used to drive at least one clamping plate to rotate so that the plurality of clamping plates can jointly clamp or release the tab portion.

[0012] In the above manner, by providing the driving mechanism to drive at least one clamping plate to rotate to achieve the joint clamping or releasing of the tab portion by the plurality of clamping plates, the difficulty of switching between clamping and releasing the tab portion by the clamping mechanism is effectively reduced, which is beneficial to improving the working efficiency of the tab piercing device.

[0013] In some embodiments, the driving mechanism is used to drive the first clamping plate and the second clamping plate to rotate. The first clamping plate can rotate around a first rotation axis, and the second clamping plate can rotate around a second rotation axis. The first rotation axis and the second rotation axis are arranged side by side. Alternatively, the driving mechanism is in transmission connection with the first clamping plate and is configured to drive the first clamping plate to rotate around a preset rotation axis, and the second clamping plate is arranged at an interval from the preset rotation axis and is relatively fixed.

[0014] In the above manner, by providing a first clamping plate and a second clamping plate that can rotate around a first rotation axis and a second rotation axis respectively, or by providing a first clamping plate that can rotate around a preset rotation axis and a relatively fixed second clamping plate, the first clamping plate and the second clamping plate are spaced apart from each other before the clamping mechanism clamps the tab portion, so that the tab portion can enter the clampable range between the two, facilitating the rotation of the first clamping plate and / or the second clamping plate to both sides in the thickness direction of the tab portion to abut against the tab portion, thereby realizing clamping the tab portion from both sides of the tab portion. The structure is simple, the operation is convenient, the tab portion is not easily damaged, which is beneficial to improving the clamping efficiency of the clamping mechanism and effectively enhancing the working reliability of the clamping assembly.

[0015] In some embodiments, the driving mechanism is used to drive the first clamping plate and / or the second clamping plate to rotate, so that the relative positions of the first clamping plate and the second clamping plate can be switched between a clamping position and a release position; in the clamping position, the first clamping plate and the second clamping plate at least partially overlap and abut against each other in the thickness direction of the tab portion to clamp both sides in the thickness direction of the tab portion; in the release position, the abutment between the first clamping plate and the second clamping plate is cancelled to release the tab portion.

[0016] In the above manner, by making the first clamping plate and the second clamping plate at least partially overlap in the clamping position to abut against both sides in the thickness direction of the tab portion, while improving the clamping stability, it is not easy to damage the tab portion, effectively enhancing the working reliability of the clamping assembly.

[0017] In some embodiments, the first clamping plate is provided with a first avoidance notch, and the second clamping plate is provided with a second avoidance notch; in the release position, the first avoidance notch and the second avoidance notch are arranged opposite to each other, and there is a spacing space between the first avoidance notch and the second avoidance notch, and the first avoidance notch, the second avoidance notch and the spacing space communicate with each other to form an avoidance space.

[0018] In the above manner, by providing the first avoidance notch, the second avoidance notch and the spacing space to communicate with each other to form an avoidance space, it is beneficial for the tab portion to smoothly enter the avoidance space when the first clamping plate and the second clamping plate are in the release position, without interference and damage between the first clamping plate and the second clamping plate. And the setting of the first avoidance notch and the second avoidance notch can reduce the space occupied by the clamping mechanism on the premise of ensuring the size of the avoidance space, which is beneficial to improving the space utilization rate and effectively enhancing the working reliability of the clamping mechanism.

[0019] In some embodiments, the first clamping plate includes a first plate body and a first rotating portion, the first rotating portion protruding from a side edge of the first plate body to form a first avoidance gap between the first rotating portion and the first plate body, and the driving mechanism is transmission connected to the first rotating portion to drive the first rotating portion to rotate around the first rotation axis; and / or, the second clamping plate includes a second plate body and a second rotating portion, the second rotating portion protruding from a side edge of the second plate body to form a second avoidance gap between the second rotating portion and the second plate body, and the driving mechanism is transmission connected to the second rotating portion to drive the second rotating portion to rotate around the second rotation axis.

[0020] Through the above method, the first plate body and the first rotating part are set to form a first avoidance gap, and the second plate body and the second rotating part are set to form a second avoidance gap, so that the pole ear part can be accommodated in the avoidance space when the first clamping plate and the second clamping plate are in the release position, and when switching to the clamping position, the driving mechanism only needs to drive the first rotating part and the second rotating part to rotate to drive the first plate body and the second plate body to rotate, so as to achieve clamping of the pole ear part. The operation is convenient and the structure is simple, which effectively improves the clamping efficiency and working reliability of the clamping mechanism.

[0021] In some embodiments, the first clamping plate and the second clamping plate rotate in the same direction; and / or, the first rotation axis and the second rotation axis are parallel to each other; and / or, the first rotation axis and the second rotation axis are arranged to be parallel to the axis of the through hole.

[0022] Through the above method, the difficulty of installing and positioning the first clamping plate and the second clamping plate is effectively reduced, and it is conducive to smoothly clamping and guiding the pole ear part to penetrate into the through hole, effectively improving the clamping efficiency of the clamping mechanism and effectively improving the working reliability of the pole ear piercing device.

[0023] In some embodiments, the ratio of the width of the first clamping plate in the direction perpendicular to the first rotation axis to the width of the second clamping plate in the direction perpendicular to the second rotation axis is 0.5 to 2; and / or, the length of the first clamping plate along the first rotation axis is the same as the length of the second clamping plate along the second rotation axis.

[0024] In the above manner, by reasonably setting the ratio of the width of the first clamping plate in the direction perpendicular to the first rotation axis to the width of the second clamping plate in the direction perpendicular to the second rotation axis, the clamping stability of the pole ear portion is effectively improved while effectively ensuring the smooth operation of the clamping mechanism, and the possibility of failing to stably and reliably clamp the pole ear portion due to the ratio of the widths being too small or too large is effectively reduced. The length of the first clamping plate and the second clamping plate is reasonably set, which can effectively ensure the area of ​​the overlapping part between the two in the clamping position, effectively improve the space utilization rate, and provide effective and reliable clamping for the pole ear portion.

[0025] In some embodiments, the first clamping plate and the second clamping plate are rotatably connected, and the first clamping plate and the second clamping plate can rotate relative to each other about the same preset rotation axis. The driving mechanism is in transmission connection with the first clamping plate and / or the second clamping plate to drive the first clamping plate and / or the second clamping plate to rotate about the preset rotation axis.

[0026] In the above manner, by providing the first clamping plate and the second clamping plate that rotate about the same preset rotation axis, the release position and the clamping position can be smoothly switched, which is beneficial to smoothly clamping and guiding the pole ear portion to penetrate into the through hole, effectively improving the clamping efficiency of the clamping mechanism and effectively improving the working reliability of the pole ear piercing device.

[0027] In some embodiments, the pole ear piercing device includes a transmission mechanism. The driving mechanism is in transmission connection with the transmission mechanism, and the transmission mechanism is in transmission connection with the first clamping plate and the second clamping plate.

[0028] In the above manner, by providing the transmission mechanism, the transmission connection between the driving mechanism and the first clamping plate and the second clamping plate is realized, providing a basis for the switching between the release position and the clamping position, and effectively improving the working reliability of the pole ear piercing device.

[0029] In some embodiments, the transmission mechanism includes a first transmission rod that rotates about a first rotation axis and a second transmission rod that rotates about a second rotation axis. The first transmission rod is connected to the first clamping plate, and the second transmission rod is connected to the second clamping plate. The driving mechanism is in transmission connection with the first transmission rod and the second transmission rod for driving the first transmission rod to rotate about the first rotation axis and driving the second transmission rod to rotate about the second rotation axis.

[0030] In the above manner, by providing the first transmission rod and the second transmission rod, the driving mechanism can drive the first transmission rod and the second transmission rod to rotate respectively to drive the first clamping plate and the second clamping plate to rotate respectively, so as to realize the first clamping plate and the second clamping plate to rotate about the first rotation axis and the second rotation axis respectively, and further realize the switching between the release position and the clamping position, effectively improving the working reliability of the pole ear piercing device.

[0031] In some embodiments, the transmission mechanism includes a link mechanism. The link mechanism is in transmission connection with the first transmission rod and the second transmission rod, and the driving mechanism is in transmission connection with the link mechanism. The driving mechanism is used to drive the first transmission rod and the second transmission rod to rotate through the link mechanism.

[0032] In the above manner, by providing the link mechanism to drive the first transmission rod and the second transmission rod to rotate, it is beneficial to smoothly switch the release position and the clamping position, and then facilitate the clamping of the pole ear portion, effectively improving the working reliability of the pole ear piercing device. Moreover, the link mechanism has a stable structure, is convenient for loading and unloading, and is convenient for installation and maintenance.

[0033] In some embodiments, the linkage mechanism includes a base, a first link, a second link, and a third link. The first link, the second link, and the third link are disposed on one side of the base, and the third link is respectively in transmission connection with the first link and the second link. A driving mechanism is used to drive the third link to rotate; a first transmission rod and a second transmission rod penetrate through the base from the other side of the base and are respectively in transmission connection with the first link and the second link.

[0034] In the above manner, by providing the linkage mechanism to drive the first transmission rod and the second transmission rod to rotate, it is beneficial to smoothly switch between the release position and the clamping position of the clamping mechanism, and thus facilitate clamping of the tab portion, effectively improving the working reliability of the tab piercing device. Moreover, the linkage mechanism has a strong load-bearing capacity and good impact resistance, which is beneficial to extending the service life of the tab piercing device.

[0035] In some embodiments, the transmission mechanism includes an input shaft and a coupling. The driving mechanism has an output shaft, and the input shaft and the output shaft are connected by the coupling. The input shaft is in transmission connection with the linkage mechanism.

[0036] In the above manner, by providing the input shaft and the coupling, the power output by the output shaft of the driving mechanism is input to the linkage mechanism through the coupling and the input shaft, which is convenient to operate, has a simple structure, and effectively improves the working stability and reliability of the transmission mechanism.

[0037] In some embodiments, the transmission mechanism includes a gear mechanism. The gear mechanism is in transmission connection with the first transmission rod and the second transmission rod, and the driving mechanism is in transmission connection with the gear mechanism. The driving mechanism is used to drive the first transmission rod and the second transmission rod to rotate through the gear mechanism.

[0038] In the above manner, by providing the gear mechanism to drive the first transmission rod and the second transmission rod to rotate, it is beneficial to smoothly switch between the release position and the clamping position of the clamping mechanism, and thus facilitate clamping of the tab portion, effectively improving the working reliability of the tab piercing device. Moreover, the gear mechanism has a stable structure, a relatively low manufacturing cost, is convenient for positioning, installation, and disassembly, and effectively reduces the difficulty of installation and maintenance.

[0039] In some embodiments, the gear mechanism includes a base, a main gear, a first driven gear, and a second driven gear. The main gear, the first driven gear, and the second driven gear are disposed on one side of the base, and the first driven gear and the second driven gear mesh with each other. The driving mechanism is used to drive the first driving wheel to rotate; the first transmission rod and the second transmission rod penetrate through the base from the other side of the base and are respectively in transmission connection with the first driven gear and the second driven gear.

[0040] In the above - mentioned manner, by driving the first main gear to rotate through the driving mechanism, the rotation of the first driven gear and the second driven gear can be realized, thereby realizing the switching between the release position and the clamping position of the clamping mechanism. The operation is convenient, the structure is simple, it is convenient for loading and unloading, and the structural stability is high, which is beneficial to improving the service life of the gear mechanism and the working reliability of the pole - ear piercing device.

[0041] In some embodiments, the transmission mechanism includes an input shaft and a coupling. The driving mechanism has an output shaft, and the input shaft and the output shaft are connected through the coupling, and the input shaft is in transmission connection with the gear mechanism.

[0042] In the above - mentioned manner, by setting the input shaft and the coupling, the power output by the output shaft of the driving mechanism is input into the gear mechanism through the coupling and the input shaft. The operation is convenient, the structure is simple, and the working stability and reliability of the transmission mechanism are effectively improved.

[0043] In some embodiments, the pole - ear piercing device includes a flange seat, and the driving mechanism and the transmission mechanism are connected through the flange seat.

[0044] In the above - mentioned manner, by setting the flange seat to connect the driving mechanism and the transmission mechanism, the connection stability between the driving mechanism and the transmission mechanism is effectively improved, which is beneficial to enhancing the working stability and reliability of the transmission mechanism.

[0045] In some embodiments, the process of the housing being sleeved onto the electrode assembly includes a first stage. In the first stage, the clamping mechanism is set to be able to move relative to the electrode assembly together with the housing to clamp the pole ear part in the first stage.

[0046] In the above - mentioned manner, by the clamping mechanism moving relative to the electrode assembly together with the housing in the first stage, the clamping mechanism can approach the pole ear part while the electrode assembly is gradually inserted into the housing, so as to clamp the pole ear part in the first stage, and the clamping of the pole ear part can be achieved smoothly and smoothly, effectively improving the clamping efficiency of the clamping mechanism and the assembly efficiency of the battery.

[0047] In some embodiments, the process of the housing being sleeved onto the electrode assembly includes a second stage after the first stage. In the second stage, the clamping mechanism is set to be able to move relative to the housing in a direction away from each other and keep clamping the pole ear part, and then the clamped pole ear part extends out of the accommodation cavity through the through - hole.

[0048] In the above - mentioned manner, by the clamping mechanism moving relative to the housing in a direction away from each other in the second stage and keeping clamping the pole ear part, the pole ear part can be guided to penetrate into the through - hole while the electrode assembly is further inserted into the housing. The assembly process is smooth and clear, effectively improving the efficiency of the pole ear part penetrating into the through - hole and the assembly efficiency of the battery.

[0049] In a second aspect, the present application provides an assembly device for a battery. The assembly device includes a case loading device and the pole ear threading device as described above. The case loading device is used to load the electrode assembly into the case from the open end of the case. The case loading device includes a case fixing mechanism and a carrying component. The case fixing mechanism is used to fix the case, and the carrying component is used to carry the electrode assembly. Among them, the case fixing mechanism and the pole ear threading device are arranged to be able to move up and down relative to the carrying component to correspondingly move away from or close to the carrying component; the pole ear threading device is used to penetrate into the accommodation cavity through the through hole before clamping the pole ear part; the case fixing mechanism is used to sleeved the case on the electrode assembly; the driving mechanism is used to drive the clamping mechanism to clamp the pole ear part in the accommodation cavity and drive the clamping mechanism to guide the pole ear part to extend out of the accommodation cavity through the through hole.

[0050] In the above manner, when the case of the battery is sleeved on the electrode assembly, the pole ear part of the battery can be smoothly guided to extend out of the accommodation cavity through the through hole, so that the pole ear part can smoothly extend out of the case, thereby making it difficult for the pole ear part to block the case from being sleeved on the electrode assembly, and it is also not easy for the pole ear part to collide with the case and cause damage or fail to smoothly penetrate into the through hole. Furthermore, the accurate case loading of the electrode assembly can be realized, the working stability and reliability of the pole ear threading device can be effectively improved, the assembly difficulty of the battery can be effectively reduced, and the assembly efficiency and the qualified product rate of the battery can be effectively improved.

[0051] In a third aspect, the present application provides an assembly method for a battery. The battery includes a case and an electrode assembly. The case has an accommodation cavity and a through hole communicating the accommodation cavity with the outside. The electrode assembly is disposed in the accommodation cavity, and the pole ear part of the electrode assembly extends out from the through hole. The assembly method includes: controlling the clamping mechanism to pass through the through hole and extend into the accommodation cavity, and controlling the case to be sleeved on the electrode assembly; during the process of the case being sleeved on the electrode assembly, controlling the driving mechanism to drive the clamping mechanism to clamp the pole ear part in the accommodation cavity and drive the clamping mechanism to guide the pole ear part to extend out of the accommodation cavity through the through hole.

[0052] In the above manner, the pole ear part of the battery can be smoothly guided to penetrate into the through hole, so that it is difficult for the pole ear part to block the case from being sleeved on the electrode assembly, and it is also not easy for the pole ear part to collide with the case and cause damage or fail to smoothly penetrate into the through hole. Furthermore, the accurate case loading of the electrode assembly can be realized, and while the case is sleeved on the electrode assembly, the pole ear part is guided to penetrate into the through hole, effectively improving the working stability and reliability of the pole ear threading device, effectively reducing the assembly difficulty of the battery, and effectively improving the assembly efficiency and the qualified product rate of the battery.

[0053] In some embodiments, controlling the driving mechanism to drive the clamping mechanism to clamp the pole ear part and drive the clamping mechanism to guide the pole ear part to extend out of the accommodation cavity through the through hole includes: in the first stage, controlling the clamping mechanism and the case to move relative to the electrode assembly together to clamp the pole ear part in the first stage; in the second stage, controlling the clamping mechanism and the case to move relative to each other in a direction away from each other while keeping the pole ear part clamped, and further clamping the pole ear part to extend out of the accommodation cavity through the through hole.

[0054] In the above - mentioned manner, by moving the first - stage clamping mechanism and the housing relative to the electrode assembly together, it is possible to clamp the tab ear by the clamping mechanism while the electrode assembly gradually enters the housing, and smooth and fluent clamping of the tab ear can be achieved. In the second stage, the clamping mechanism and the housing move relative to each other in a direction away from each other while maintaining the clamping of the tab ear, which can guide the tab ear to penetrate through the through - hole while the electrode assembly further enters the housing. The assembly process is smooth and clear, effectively improving the efficiency of the tab ear penetrating through the through - hole and the assembly efficiency of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered as a limitation of the present application. Moreover, in all the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0056] Figure 1 is a schematic structural diagram of a vehicle according to one or more embodiments;

[0057] Figure 2 is an exploded structural diagram of a battery according to one or more embodiments;

[0058] Figure 3 is an exploded structural diagram of a power - supply battery according to one or more embodiments;

[0059] Figure 4 is a schematic structural diagram of an assembly device according to one or more embodiments;

[0060] Figure 5 is a schematic structural diagram of a battery assembly system according to one or more embodiments;

[0061] Figure 6 is a schematic structural diagram of a tab - piercing device according to one or more embodiments;

[0062] Figure 7 is Figure 6 a front - view schematic diagram of the tab - piercing device in the clamping position;

[0063] Figure 8 is Figure 6 a front - view schematic diagram of the tab - piercing device in the release position;

[0064] Figure 9 is Figure 6 another front - view schematic diagram of the tab - piercing device in the release position;

[0065] Figure 10 is Figure 7Schematic diagram of the implementation scenario of the shown link mechanism;

[0066] Figure 11 For Figure 7 Another schematic diagram of the implementation scenario of the shown link mechanism;

[0067] Figure 12 Exploded structural schematic diagram of the pole ear piercing device according to one or more embodiments;

[0068] Figure 13 For Figure 6 Schematic diagram of the implementation scenario of the shown transmission mechanism;

[0069] Figure 14 Flow schematic diagram of the embodiment of the battery assembly method of the present application.

[0070] The reference numerals in the specific implementation manners are as follows:

[0071] Vehicle 1000a;

[0072] Power supply battery 100a; Controller 200a; Motor 300a;

[0073] Box 10a; First part 11a; Second part 12a;

[0074] Preset assembly direction F1; Vertical direction of the first rotation axis F2; Vertical direction of the second rotation axis F3; Thickness direction of the pole ear part F4; First rotation axis L1; Second rotation axis L2; Preset rotation axis L3;

[0075] Battery 1; Housing 10; Accommodation cavity 11; Open end 12; Top 13; Through hole 14; Pole 15; Electrode assembly 20; Pole ear part 21; Bottom cover 30; Pole ear piercing device 2; Avoidance space 201; First avoidance notch 202; Second avoidance notch 203; Spacing space 204; Clamping mechanism 100; First clamping plate 110; First plate body 111; First rotating part 112; Second clamping plate 120; Second plate body 121; Second rotating part 122; Clamping plate 130; Driving mechanism 200; Output shaft 210; Transmission mechanism 300; First transmission rod 310; Second transmission rod 320; Link mechanism 330; First link 331; Second link 332; Third link 333; Input shaft 340; Coupling 350; Gear mechanism 360; First driven gear 361; Second driven gear 362; Main gear 363; Base 370; Flange seat 400; Assembly equipment 3; Case loading device 40; Housing fixing mechanism 41; Carrying component 42; Pole ear welding device 50; Pole welding device 60; Bottom cover welding device 70; Pairing device 80; Conveyor equipment 4; Battery assembly system 5. Specific implementation manners

[0076] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0077] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion.

[0078] In the description of the embodiments of the present application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary-secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is more than two, unless otherwise specifically defined.

[0079] Referring to "embodiments" herein means that the specific features, structures or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0080] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after.

[0081] In the description of the embodiments of the present application, the term "a plurality of" refers to more than two (including two). Similarly, "a plurality of groups" refers to more than two groups (including two groups), and "a plurality of pieces" refers to more than two pieces (including two pieces).

[0082] In the description of the embodiments of the present application, the orientation or positional relationship indicated by technical terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the embodiments of the present application.

[0083] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.

[0084] With the development of battery technology, batteries are applied in more and more fields and gradually replace traditional fossil energy in the field of automotive power. A battery can store chemical energy and controllably convert the chemical energy into electrical energy. In a recyclable battery, after discharging, the active substances can be activated by charging and continue to be used.

[0085] A battery refers to a cup, trough or other container or a partial space of a composite container containing an electrolyte solution and metal electrodes to generate current, and is a device that can convert chemical energy into electrical energy. With the development of technology, batteries with the advantages of being easy to carry, simple and easy to charge and discharge, and stable power supply for a long time are widely used in fields such as automobiles, household appliances, and aerospace.

[0086] The pole ear part of a battery is a metal conductor that leads the positive and negative electrodes out of the battery cell to the outside of the housing. Therefore, during the assembly process of the battery, the pole ear part of the battery needs to be led out of the housing to serve as the contact point when the battery is charged and discharged. However, during the assembly process of the battery, when the battery cell is assembled into the housing, the pole ear part is easily bent inside the housing and cannot extend out of the housing, making it difficult to smoothly complete the assembly between the battery cell and the housing. Therefore, the difficulty of the battery assembly preparation process is relatively high, and the yield of battery preparation is relatively low.

[0087] In order to accurately insert the electrode assembly into the housing and smoothly extend the pole ear part out of the housing, the pole ear part can be guided when the electrode assembly is inserted into the housing, so that the pole ear part smoothly extends out of the housing.

[0088] Based on the above considerations, the present application provides a battery ear-piercing device, assembly equipment and assembly method. The battery includes a shell and an electrode assembly, the shell has a housing cavity, a through hole connecting the housing cavity and the outside is opened on the shell, the electrode assembly is arranged in the housing cavity, and the ear-piercing device is used to guide the ear portion of the electrode assembly to extend from the through hole. The ear-piercing device includes a clamping mechanism and a driving mechanism, the clamping mechanism is used to clamp the ear portion, and the driving mechanism is connected to the clamping mechanism for driving the clamping mechanism to move. Among them, the driving mechanism is configured to drive the clamping mechanism to clamp the ear portion located in the housing cavity and extend through the through hole to the housing cavity. In this way, under the premise of not affecting and damaging the shell, the ear portion can be guided to smoothly penetrate into the through hole, so that the ear portion can smoothly extend out of the shell, so that the ear portion is not easy to block the shell from being inserted into the electrode assembly, and the ear portion is not easy to collide with the shell to cause damage or fail to smoothly penetrate the through hole, thereby realizing the precise entry of the electrode assembly into the shell, effectively improving the working stability and reliability of the ear-piercing device, effectively reducing the difficulty of battery assembly, and effectively improving the assembly efficiency and yield rate of the battery.

[0089] The battery disclosed in the embodiments of the present application can be used in an electrical device that uses the battery as a power source or in various energy storage systems that use the battery as an energy storage element. The electrical device can be, but is not limited to, a mobile phone, a tablet, a laptop, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, and the like. Among them, the electric toy can include a fixed or mobile electric toy, for example, a game console, an electric car toy, an electric ship toy, and an electric airplane toy, and the like, and the spacecraft can include an airplane, a rocket, a space shuttle, and a spacecraft, and the like.

[0090] For the convenience of description, the following embodiments are described by taking a vehicle 1000a as an example of an electrical device in an embodiment of the present application.

[0091] Please refer to Figure 1 The vehicle 1000a can be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A power supply battery 100a is arranged inside the vehicle 1000a. The power supply battery 100a can be arranged at the bottom, head or tail of the vehicle 1000a. The power supply battery 100a can be used to power the vehicle 1000a. For example, the power supply battery 100a can be used as an operating power source for the vehicle 1000a. The vehicle 1000a can also include a controller 200a and a motor 300a. The controller 200a is used to control the power supply battery 100a to power the motor 300a, for example, for the starting, navigation and driving power requirements of the vehicle 1000a.

[0092] 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 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.

[0093] In some embodiments, the power supply battery 100a can be an energy storage device. The energy storage device includes an energy storage container, an energy storage cabinet, etc.

[0094] The power supply battery 100a mentioned in the embodiments of the present application refers to a single physical module including one or more batteries 1 to provide higher voltage and capacity.

[0095] In the embodiments of the present application, the battery 1 can be a secondary battery, which refers to a battery that can activate the active material by charging after discharging. Each battery 1 can also be a primary battery.

[0096] The battery 1 includes but is not limited to lithium-ion batteries, sodium-ion batteries, sodium-lithium-ion batteries, lithium-metal batteries, sodium-metal batteries, lithium-sulfur batteries, magnesium-ion batteries, nickel-metal hydride batteries, nickel-cadmium batteries, lead-acid batteries, etc. The battery 1 can be in the shape of a cylinder, a flat body, a cuboid or other shapes, etc.

[0097] In some embodiments, the power supply battery 100a can be a battery module. When there are multiple batteries 1, the multiple batteries 1 are arranged and fixed to form a battery module.

[0098] In some embodiments, please refer to Figure 2 , the power supply battery 100a can be a battery pack. The battery pack includes a box body 10a and the battery 1, and the battery 1 or the battery module is accommodated in the box body 10a.

[0099] In some embodiments, the box body 10a can be part of the chassis structure of the vehicle 1000a. For example, a part of the box body 10a can become at least a part of the floor of the vehicle 1000a, or a part of the box body 10a can become at least a part of the cross beam and longitudinal beam of the vehicle 1000a.

[0100] Please refer to Figure 2, the power supply battery 100a includes a box body 10a and a battery 1, and the battery 1 is accommodated in the box body 10a. Among them, the box body 10a is used to provide an accommodation space for the battery 1, and the box body 10a can adopt various structures. In some embodiments, the box body 10a may include a first part 11a and a second part 12a, the first part 11a and the second part 12a cover each other, and the first part 11a and the second part 12a jointly define an accommodation space for accommodating the battery 1. The second part 12a may be a hollow structure with one end open, and the first part 11a may be a plate-like structure. The first part 11a covers the opening side of the second part 12a so that the first part 11a and the second part 12a jointly define an accommodation space; the first part 11a and the second part 12a may also both be hollow structures with one side open, and the opening side of the first part 11a covers the opening side of the second part 12a. Of course, the box body 10a formed by the first part 11a and the second part 12a can be various shapes, such as a cylinder, a cuboid, etc.

[0101] In the power supply battery 100a, there may be multiple batteries 1, and the multiple batteries 1 can be connected in series, in parallel, or in a mixed connection. A mixed connection means that among the multiple batteries 1, there are both series and parallel connections. The multiple batteries 1 can be directly connected in series, in parallel, or in a mixed connection together, and then the whole formed by the multiple batteries 1 is accommodated in the box body 10a; of course, the power supply battery 100a can also be that multiple batteries 1 are first connected in series, in parallel, or in a mixed connection to form a battery module form, and then multiple battery modules are connected in series, in parallel, or in a mixed connection to form a whole and are accommodated in the box body 10a. The power supply battery 100a may further include other structures. For example, the power supply battery 100a may further include a busbar component for realizing electrical connection between the multiple batteries 1.

[0102] Please refer to Figure 3 , the battery 1 refers to the smallest unit that makes up the battery. As Figure 3 shown, the battery 1 includes a housing 10, an electrode assembly 20, and other functional components.

[0103] In some embodiments, the housing 10 is used to encapsulate components such as the electrode assembly 20 and the electrolyte. The housing 10 can be a steel shell, an aluminum shell, a plastic shell (such as polypropylene), a composite metal shell (such as a copper-aluminum composite shell), or an aluminum-plastic film, etc.

[0104] The battery 1 may include a bottom cover 30. The bottom cover 30 refers to a component that covers the opening of the housing 10 to isolate the internal environment of the battery 1 from the external environment. Without limitation, the shape of the bottom cover 30 may be adapted to the shape of the housing 10 to fit the housing 10. Optionally, the bottom cover 30 may be made of a material with a certain hardness and strength (such as aluminum alloy). In this way, the bottom cover 30 is not easily deformed when subjected to extrusion and collision, enabling the battery 1 to have higher structural strength and improved safety performance. The material of the bottom cover 30 may also be diverse. For example, it includes but is not limited to copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc. In some embodiments, an insulating component may be provided on the inner side of the bottom cover 30. The insulating component can be used to isolate the electrical connection components in the housing 10 from the bottom cover 30 to reduce the risk of short circuit. Exemplarily, the insulating component may be plastic, rubber, etc.

[0105] The housing 10 is a component for cooperating with the bottom cover 30 to form the internal environment of the battery 1. Among them, the formed internal environment can be used to accommodate the electrode assembly 20, electrolyte, and other components. The housing 10 and the bottom cover 30 may be independent components. An open end 12 may be provided on the housing 10, and the bottom cover 30 is covered on the open end 12 at the open end 12 to form the internal environment of the battery 1. Without limitation, the bottom cover 30 and the housing 10 may also be integrated. Specifically, the bottom cover 30 and the housing 10 may first form a common connection surface before other components are put into the housing. When it is necessary to encapsulate the inside of the housing 10, then the bottom cover 30 is covered on the housing 10. The housing 10 may have various shapes and sizes, such as rectangular parallelepiped shape, cylindrical shape, hexagonal prism shape, etc. Specifically, the shape of the housing 10 may be determined according to the specific shape and size of the electrode assembly 20. The material of the housing 10 may be diverse. For example, it includes but is not limited to copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc. Functional components such as electrode terminals may be provided on the housing 10. The electrode terminals can be used to electrically connect with the electrode assembly 20 for outputting or inputting the electrical energy of the battery 1. In some embodiments, a pressure relief mechanism for releasing the internal pressure when the internal pressure or temperature of the battery 1 reaches a threshold may also be provided on the housing 10.

[0106] The electrode assembly 20 is a component in the battery 1 where an electrochemical reaction occurs. The housing 10 may contain one or more electrode assemblies 20.

[0107] In some embodiments, the electrode assembly 20 includes a positive electrode, a negative electrode, and a separator. During the charge and discharge process of the battery 1, active ions (such as lithium ions) are embedded and extracted back and forth between the positive electrode and the negative electrode. The separator is disposed between the positive electrode and the negative electrode, which can play a role in preventing short circuit between the positive and negative electrodes and at the same time allow the active ions to pass through.

[0108] 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 provided on at least one surface of the positive electrode current collector.

[0109] As an example, the positive electrode current collector has two surfaces opposite to each other in its own thickness direction, and the positive electrode active material is provided on any one or both of the two opposite surfaces of the positive electrode current collector.

[0110] 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 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 (such as 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.).

[0111] As an example, the positive electrode active material may include at least one of the following materials: lithium-containing phosphate, lithium transition metal oxide and their respective modified compounds. However, the present application is not limited to these materials, and other conventional materials that can be used as battery positive electrode active materials may also be used. These positive electrode active materials may be used alone or in combination of two or more. Among them, examples of the lithium-containing phosphate may include but are not limited to lithium iron phosphate (such as LiFePO4 (which may also be abbreviated 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 manganese iron phosphate, a composite material of lithium manganese iron phosphate and carbon, etc. Examples of the lithium transition metal oxide may include but are not limited to lithium cobalt oxide (such as LiCoO 2 ), lithium nickel oxide (such as LiNiO 2 ), lithium manganese oxide (such as LiMnO 2 , LiMn2O 4 ), lithium nickel cobalt oxide, lithium manganese cobalt oxide, lithium nickel manganese oxide, lithium nickel cobalt manganese oxide (such as LiNi 1 / 3 Co 1 / 3 Mn 1 / 3 O 2 (which may also be abbreviated as NCM 333 ), LiNi 0.5 Co 0.2 Mn 0.3 O 2 (which may also be abbreviated as NCM 523 ), LiNi 0.5 Co 0.25 Mn 0.25 O 2 (which may also be abbreviated as NCM211 )), LiNi 0.6 Co 0.2 Mn 0.2 O 2 (which can also be abbreviated as NCM 622 )), LiNi 0.8 Co 0.1 Mn 0.1 O 2 (which can also be abbreviated as NCM 811 ), lithium nickel cobalt aluminum oxide (such as LiNi 0.85 Co 0.15 Al 0.05 O 2 ) and at least one of its modified compounds, etc.

[0112] In some embodiments, the negative electrode can be a negative electrode sheet, and the negative electrode sheet can include a negative electrode current collector.

[0113] As an example, the negative electrode current collector can be a metal foil, a foam metal, 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, a carbon electrode, carbon, nickel, titanium, etc. can be used. The foam metal can be foam nickel, foam copper, foam aluminum, foam alloy, or foam carbon, etc. The composite current collector can include a polymer material substrate layer and a metal layer. The composite current collector can be formed by forming a metal material (such as 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.).

[0114] As an example, the negative electrode sheet can include a negative electrode current collector and a negative electrode active material provided on at least one surface of the negative electrode current collector.

[0115] As an example, the negative electrode current collector has two surfaces opposite to each other in its own thickness direction, and the negative electrode active material is provided on either or both of the two opposite surfaces of the negative electrode current collector.

[0116] As an example, the negative electrode active material can be a negative electrode active material for a battery well-known in the art. As an example, the negative electrode active material can include at least one of the following materials: artificial graphite, natural graphite, soft carbon, hard carbon, silicon-based materials, tin-based materials, and lithium titanate, etc. The silicon-based materials can be selected from at least one of elemental silicon, silicon oxides, silicon-carbon composites, silicon-nitrogen composites, and silicon alloys. The tin-based materials can be selected from at least one of elemental tin, tin oxides, and tin alloys. However, the present application is not limited to these materials, and other conventional materials that can be used as the negative electrode active material of the battery can also be used. These negative electrode active materials can be used alone or in combination of two or more.

[0117] In some embodiments, the material of the positive current collector can be aluminum, and the material of the negative current collector can be copper.

[0118] In some embodiments, the electrode assembly 20 further includes a separator disposed between the positive electrode and the negative electrode.

[0119] In some embodiments, the separator is a separator membrane. The present application does not particularly limit the type of the separator membrane, and any publicly known porous structure separator membrane with good chemical stability and mechanical stability can be selected.

[0120] As an example, the main material of the separator membrane can be selected from at least one of glass fiber, non-woven fabric, polyethylene, polypropylene, polyvinylidene fluoride, and ceramics. The separator membrane can be a single-layer film or a multi-layer composite film, without particular limitation. When the separator membrane 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 located between the positive and negative electrodes, or can be attached to the surfaces of the positive and negative electrodes.

[0121] In some embodiments, the separator is a solid electrolyte. The solid electrolyte is disposed between the positive electrode and the negative electrode, and simultaneously functions to transport ions and isolate the positive and negative electrodes.

[0122] In some embodiments, the battery 1 further includes an electrolyte, which functions to conduct ions between the positive and negative electrodes. The present application does not specifically limit the type of the electrolyte, and it can be selected according to requirements. The electrolyte can be liquid, gel, or solid.

[0123] Among them, the liquid electrolyte includes an electrolyte salt and a solvent.

[0124] In some embodiments, the electrolyte salt can be selected from at least one of lithium hexafluorophosphate, lithium tetrafluoroborate, lithium perchlorate, lithium hexafluoroarsenate, lithium bis(fluorosulfonyl)imide, lithium bis(trifluoromethanesulfonyl)imide, lithium trifluoromethanesulfonate, lithium difluorophosphate, lithium difluoro(oxalato)borate, lithium bis(oxalato)borate, lithium difluoro(bis(oxalato))phosphate, and lithium tetrafluoro(oxalato)phosphate.

[0125] In some embodiments, the solvent may be selected from at least one of ethylene carbonate, propylene carbonate, ethyl methyl carbonate, diethyl carbonate, dimethyl carbonate, dipropyl carbonate, methyl propyl carbonate, ethyl propyl carbonate, butylene carbonate, fluoroethylene carbonate, methyl formate, methyl acetate, ethyl acetate, propyl acetate, methyl propionate, ethyl propionate, propyl propionate, methyl butyrate, ethyl butyrate, 1,4-butyrolactone, sulfolane, dimethyl sulfone, methyl ethyl sulfone, and diethyl sulfone. The solvent may also be an ether solvent. The ether solvent may 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.

[0126] Among them, the gel electrolyte includes a polymer as the skeletal network of the electrolyte, combined with an ionic liquid-lithium salt.

[0127] Among them, the solid electrolyte includes a polymer solid electrolyte, an inorganic solid electrolyte, and a composite solid electrolyte.

[0128] As an example, the polymer solid electrolyte may be polyether (polyethylene oxide), polysiloxane, polycarbonate, polyacrylonitrile, polyvinylidene fluoride, polymethyl methacrylate, single-ion polymer, polyionic liquid-lithium salt, cellulose, etc.

[0129] As an example, the inorganic solid electrolyte may be an oxide solid electrolyte (crystalline perovskite, sodium superionic conductor, garnet, amorphous LiPON film), a sulfide solid electrolyte (crystalline lithium superionic conductor (lithium germanium phosphorus sulfur, argyrodite), amorphous sulfide), and one or more of a halide solid electrolyte, a nitride solid electrolyte, and a hydride solid electrolyte.

[0130] As an example, the composite solid electrolyte is formed by adding an inorganic solid electrolyte filler to the polymer solid electrolyte.

[0131] In some embodiments, the electrode assembly 20 has a wound structure. The positive electrode sheet and the negative electrode sheet are wound into a wound structure.

[0132] In some embodiments, the electrode assembly 20 is provided with electrode tabs 21, and the electrode tabs 21 can conduct current out of the electrode assembly 20. The electrode tabs 21 include a positive electrode tab and a negative electrode tab. The positive electrode tab and the negative electrode tab may be located at one end of the main body together or at both ends of the main body respectively. During the charging and discharging process of the power supply battery 100a, the positive electrode active material and the negative electrode active material react with the electrolyte, and the electrode tabs 21 are connected to the electrode terminals to form a current loop.

[0133] According to some embodiments of the present application, such as Figure 3As shown, the battery 1 may include a shell 10 and an electrode assembly 20. The shell 10 may have a accommodating cavity 11 and an open end 12 connected to the accommodating cavity 11. The shell 10 also has a top 13 arranged opposite to the open end 12. The top 13 may be provided with a through hole 14 connecting the accommodating cavity 11 and the outside. 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 penetrates into the through hole 14 and extends out from the through hole 14.

[0134] Alternatively, if Figure 3 As shown, the housing 10 may include a pole 15. The pole 15 may be disposed at the top 13 of the housing 10, and a through hole 14 may be opened at the pole 15. The active material coating portion of the electrode assembly 20 is disposed in the housing 10, and the pole ear portion 21 of the electrode assembly 20 may pass through the through hole 14 and be connected to the side of the pole 15 away from the accommodation cavity 11, thereby outputting the electrical energy in the electrode assembly 20 to the outside of the battery 1. The housing 10 may be inserted into the electrode assembly 20 through the open end 12 to accommodate the electrode assembly 20.

[0135] Alternatively, if Figure 3 As shown, the battery 1 may further include a bottom cover 30, which is used to cover the opening end 12 so that the electrode assembly 20 is not easy to fall from the opening end 12 after being put into the shell.

[0136] According to some embodiments of the present application, optionally, Figure 4 As shown, the assembly device 3 includes a shell insertion device 40 and a tab insertion device 2, wherein 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 bearing assembly 42, wherein the shell fixing mechanism 41 is used to fix the shell 10, and the bearing assembly 42 is located below the shell fixing mechanism 41 and the tab insertion device 2 in the preset assembly direction F1, and is used to carry the electrode assembly 20.

[0137] Optionally, the electrode assembly 20 and the bottom cover 30 can be stacked on the carrier assembly 42 in sequence according to the preset assembly direction F1, so that after the electrode assembly 20 is placed in the shell, the bottom cover 30 can cover the open end 12. The carrier assembly 42 can also further fix the electrode assembly 20 and the bottom cover 30 to reduce the displacement of the electrode assembly 20 during transportation or shell placement.

[0138] The shell fixing mechanism 41 and the tab device 2 are configured to be able to rise and fall relative to the bearing assembly 42 along a preset assembly direction F1, so as to be correspondingly away from or close to the bearing assembly 42. Before clamping the tab portion 21, the tab device 2 is configured to be able to penetrate into the accommodating cavity 11 through the through hole 14, and the shell fixing mechanism 41 is configured to insert the shell 10 into the electrode assembly 20 during the descent process. In the process of inserting the shell 10 into the electrode assembly 20, the tab device 2 can guide the tab portion 21 to extend out of the accommodating cavity 11 through the through hole 14.

[0139] Furthermore, the process of inserting the shell 10 into the electrode assembly 20 includes a first stage and a second stage arranged in a sequential order. In the first stage, the shell fixing mechanism 41 and the through-ear device 2 are arranged to be able to descend together along the preset assembly direction F1 relative to the bearing assembly 42, so that the through-ear device 2 can contact the pole ear portion 21 in the accommodating cavity 11. In the second stage, the shell fixing mechanism 41 is arranged to be able to descend along the preset assembly direction F1 relative to the through-ear device 2, so that the through-ear device 2 guides the pole ear portion 21 to extend out of the accommodating cavity 11 through the through hole 14. Before the first stage, the through-ear device 2 is arranged 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 bearing assembly 42 together with the shell fixing mechanism 41 in the first stage.

[0140] 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 through the through hole 14 to extend out of the accommodating cavity 11, so that the pole ear portion 21 can smoothly extend out of the shell 10, so that the pole ear portion 21 is not easy to block the shell 10 from being inserted into the electrode assembly 20, and the pole ear portion 21 is not easy to collide with the shell 10 to cause damage or fail to smoothly penetrate the through hole 14, thereby achieving accurate shell insertion of the electrode assembly 20, effectively improving the working stability and reliability of the pole ear 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.

[0141] Alternatively, if Figure 5 As shown, in some embodiments, the assembly device 3 includes a tab welding device 50, a pole welding device 60, and a bottom cover welding device 70. The tab welding device 50 is used to weld a plurality of tab sheets of the electrode assembly 20 to form a tab portion 21; the pole welding device 60 is used to weld the tab portion 21 passing through the through hole 14 to the side of the pole 15 of the housing 10 away from the accommodating cavity 11; and the bottom cover welding device 70 is used to weld the bottom cover 30 to the open end 12 of the housing 10.

[0142] In the above manner, by setting up the pole ear welding device 50, the pole post welding device 60 and the bottom cover welding device 70, the assembly equipment 3 can realize the formation of the pole ear part 21, the connection between the pole ear part 21 and the pole post 15, and the connection between the bottom cover 30 and the shell 10, which is beneficial to improving the connection stability of the various parts of the battery 1 and the stability and reliability of the operation of the battery 1.

[0143] It should be noted that, in this embodiment, the structures to be assembled can be transported between the various workstations of the assembly equipment 3 by the conveying equipment 4, and the conveying equipment 4 and the assembly equipment 3 together constitute the battery assembly system 5. The conveying equipment 4 includes a conveying line, which can be a conveying structure formed by a conveying roller driven by a motor and a conveying belt, or a conveying structure formed by a conveying chain link driven by a motor, or an AGV conveying trolley, which can realize conveying in at least one direction and can support and ensure the stability of the structure to be assembled.

[0144] The purpose of the pole lug welding device 50 is to form the pole lug portion 21 after pre-welding the pole lug sheet, and it can be an ultrasonic welding device, which can ensure that the pole lug sheet is welded in a clamped stable state. The purpose of the pole column welding device 60 is to achieve the welding of the pole lug portion 21 and the pole 15, and it can be a laser welding device. The purpose of the bottom cover welding device 70 is to achieve the circumferential edge welding of the bottom cover 30 and the opening end 12 of the shell 10, and it is also a laser welding device.

[0145] In addition, the assembly equipment 3 is not limited to including the pole tab welding device 50, the shell insertion device 40, the pole tab piercing device 2, the pole column welding device 60 and the bottom cover welding device 70. Exemplarily, when the number of electrode assemblies 20 is multiple, for example, two, the assembly equipment 3 also includes a pairing device 80, which is used to stack multiple electrode assemblies 20 so that the pole tabs of the two electrode assemblies 20 are roughly opposite, so that the conveying structure can convey the matched electrode assemblies 20 to the pole tab welding device 50 for welding the pole tabs to facilitate the formation of the pole tab portion 21. Exemplarily again, in order to ensure the reliability of the battery assembly process, dust removal, NG detection stations, etc. can also be added between any two adjacent stations, which is not limited in this embodiment.

[0146] According to some embodiments of the present application, Figure 6 As shown, the tab piercing device 2 comprises a clamping mechanism 100 and a driving mechanism 200 . The clamping mechanism 100 is used to clamp the tab portion 21 , and the driving mechanism 200 is drivingly connected to the clamping mechanism 100 .

[0147] The clamping mechanism 100 is used to clamp the pole ear portion 21 , and the driving mechanism 200 is transmission-connected to the clamping mechanism 100 for driving the clamping mechanism 100 to move. The driving mechanism 200 is configured to drive the clamping mechanism 100 to clamp the pole ear portion 21 in the accommodating cavity 11 and extend out of the accommodating cavity 11 through the through hole 14 .

[0148] Optionally, the clamping mechanism 100 is used to pass through the through hole 14 and extend into the accommodating cavity 11 before clamping the pole ear portion 21. During the process of inserting the housing 10 into the electrode assembly 20, the driving mechanism 200 is used to drive the clamping mechanism 100 to clamp the pole ear portion 21 in the accommodating cavity 11, and drive the clamping mechanism 100 to guide the pole ear portion 21 to extend out of the accommodating cavity 11 through the through hole 14. The driving mechanism 200 may include a motor, which provides power for the clamping mechanism 100 to clamp the pole ear portion 21, and the motor may be a DC motor or an AC motor.

[0149] Through the above-mentioned method, by setting a clamping mechanism 100 that can clamp the pole ear part 21, and setting a driving mechanism 200 that is connected to the clamping mechanism 100, it can be achieved that during the assembly process of the battery 1, when the shell 10 is inserted into the electrode assembly 20 through the open end 12, the driving mechanism 200 drives the clamping mechanism 100 to clamp the pole ear part 21, and under the premise of not affecting and damaging the shell 10, the pole ear part 21 can be guided to smoothly penetrate into the through hole 14, so that the pole ear part 21 can smoothly extend out of the shell 10, so that the pole ear part 21 is not easy to block the shell 10 from being inserted into the electrode assembly 20, and the pole ear part 21 is not easy to collide with the shell 10 to cause damage or fail to smoothly penetrate into the through hole 14, thereby achieving accurate shell insertion of the electrode assembly 20, effectively improving the working stability and reliability of the pole ear piercing device 2, effectively reducing the assembly difficulty of the battery 1, and effectively improving the assembly efficiency and yield rate of the battery 1.

[0150] According to some embodiments of the present application, optionally, Figure 7 As shown, the clamping mechanism 100 includes a plurality of clamping plates 130, and the driving mechanism 200 is in transmission connection with at least one of the plurality of clamping plates 130, and is used to drive at least one clamping plate 130 to move. Optionally, the driving mechanism 200 is configured to drive the plurality of clamping plates 130 to clamp the circumference of the pole ear portion 21 so that the pole ear portion 21 can extend out of the accommodating cavity 11, and is configured to enable the plurality of clamping plates 130 to loosen the circumference of the pole ear portion 21 to release the pole ear portion 21.

[0151] By providing a plurality of clamping plates 130 to clamp the pole ear 21 in the above manner, the efficiency of clamping and releasing the pole ear 21 can be improved, and the circumferential clamping of the pole ear 21 by the plurality of clamping plates 130 can improve the clamping stability, thereby effectively improving the working reliability of the clamping mechanism 100.

[0152] According to some embodiments of the present application, optionally, Figure 3 and Figure 7 As shown, the plurality of clamping plates 130 include a first clamping plate 110 and a second clamping plate 120 , and the driving mechanism 200 is configured to drive the first clamping plate 110 and the second clamping plate 120 to abut against both sides of the clamping pole lug portion 21 in the thickness direction F4 .

[0153] Through the above method, by providing the first clamping plate 110 and the second clamping plate 120 capable of clamping the two sides of the thickness direction F4 of the pole ear portion 21, wherein the two sides of the thickness direction F4 of the pole ear portion 21 are two side surfaces with larger areas, the contact area between the first clamping plate 110 and the second clamping plate 120 and the pole ear portion 21 when clamping the pole ear portion 21 is increased, thereby achieving clamping of the pole ear portion 21 without causing damage to the pole ear portion 21, which is beneficial to improving the working reliability of the clamping mechanism 100.

[0154] According to some embodiments of the present application, optionally, Figure 7 and Figure 8 As shown, the driving mechanism 200 is used to drive at least one clamping plate 130 to rotate, so that a plurality of clamping plates 130 can clamp or release the pole lug portion 21 together.

[0155] In the above manner, by setting a driving mechanism 200 to drive at least one clamping plate 130 to rotate, multiple clamping plates 130 can be used to clamp or release the pole ear portion 21 together, effectively reducing the difficulty of the clamping mechanism 100 switching between clamping and releasing the pole ear portion 21, which is beneficial to improving the working efficiency of the pole ear piercing device 2.

[0156] According to some embodiments of the present application, optionally, Figure 7 and Figure 8 As shown, the driving mechanism 200 is transmission-connected with the first clamping plate 110 and the second clamping plate 120, or the driving mechanism 200 is transmission-connected with the first clamping plate 110 or the second clamping plate 120, and is used to drive the first clamping plate 110 and / or the second clamping plate 120 to move, thereby realizing the relative movement of the first clamping plate 110 and the second clamping plate 120 to enable the first clamping plate 110 and the second clamping plate 120 to abut against both sides of the pole ear portion 21 to clamp the pole ear portion 21, and enable the first clamping plate 110 and the second clamping plate 120 to detach from both sides of the pole ear portion 21 to release the pole ear portion 21.

[0157] In the above - mentioned manner, by providing a clamping mechanism 100 including a first clamping plate 110 and a second clamping plate 120, and providing a driving mechanism 200 that is in transmission connection with the first clamping plate 110 and / or the second clamping plate 120 and is used to drive the first clamping plate 110 and / or the second clamping plate 120 to move, it is realized that the clamping mechanism 100 does not contact the pole ear part 21 before clamping the pole ear part 21, so that the pole ear part 21 can enter the clampable range of the clamping mechanism 100. Subsequently, the first clamping plate 110 and the second clamping plate 120 are abutted against both sides of the pole ear part 21 to clamp the pole ear part 21, and after the pole ear part 21 penetrates through the through - hole 14, the first clamping plate 110 and the second clamping plate 120 are separated from both sides of the pole ear part 21 to release the pole ear part 21. The assembly process is simple and smooth. Clamping in the way of abutting against both sides of the pole ear part 21 can guide the pole ear part 21 to smoothly penetrate through the through - hole 14 without damaging the pole ear part 21, which is beneficial to improving the efficiency of the pole ear part 21 penetrating through the through - hole 14, and effectively improves the working stability and reliability of the pole - ear - piercing device 2.

[0158] According to some embodiments of the present application, optionally, as Figures 7 to 9 shown, the driving mechanism 200 is used to drive the first clamping plate 110 and the second clamping plate 120 to rotate, or the driving mechanism 200 is used to drive the first clamping plate 110 or the second clamping plate 120 to rotate, so that the first clamping plate 110 and the second clamping plate 120 can clamp or release the pole ear part 21.

[0159] In the above - mentioned manner, by the rotation of the first clamping plate 110 and / or the second clamping plate 120 to realize the relative movement between the two, and further enabling the first clamping plate 110 and the second clamping plate 120 to switch between abutting against the pole ear part 21 and separating from the pole ear part 21, the difficulty of the clamping mechanism 100 switching between clamping and releasing the pole ear part 21 is effectively reduced, which is beneficial to improving the working efficiency of the pole - ear - piercing device 2.

[0160] According to some embodiments of the present application, optionally, as Figure 7 and Figure 8 shown, the driving mechanism 200 is used to drive the first clamping plate 110 and the second clamping plate 120 to rotate. The first clamping plate 110 is arranged to be able to rotate around a first rotation axis L1, and the second clamping plate 120 is arranged to be able to rotate around a second rotation axis L2. The first rotation axis L1 and the second rotation axis L2 are arranged side by side.

[0161] Optionally, the first clamping plate 110 is switched between the first clamping position and the first release position by rotating around the first rotation axis L1, and the second clamping plate 120 is switched between the second clamping position and the second rotation position by rotating around the second rotation axis L2. When the first clamping plate 110 is in the first release position and the second clamping plate 120 is in the second release position, the relative positions of the two are in the release position, and the first clamping plate 110 and the second clamping plate 120 are spaced apart from each other; when the first clamping plate 110 is in the first clamping position and the second clamping plate 120 is in the second clamping position, the relative positions of the two are in the clamping position, and the first clamping plate 110 and the second clamping plate 120 are respectively rotated to at least partially overlap each other.

[0162] Optionally, the first rotation axis L1 and the second rotation axis L2 are arranged in parallel. When the clamping mechanism 100 is switched from the release position to the clamping position, the first clamping plate 110 and the second clamping plate 120 respectively rotate around the first rotation axis L1 and the second rotation axis L2 in the same direction, and can be rotated in a clockwise direction or a counterclockwise direction, until the first clamping plate 110 and the second clamping plate 120 are respectively rotated to at least partially overlap with each other. When the first clamping plate 110 and the second clamping plate 120 are in the clamping position to clamp the pole ear portion 21, the first clamping plate 110 and the second clamping plate 120 respectively abut against the two sides of the pole ear portion 21, so as to use the overlapping part of the first clamping plate 110 and the second clamping plate 120 to clamp the pole ear portion 21.

[0163] Through the above method, by setting the first clamping plate 110 and the second clamping plate 120 which can rotate around the first rotation axis L1 and the second rotation axis L2 respectively, and the first rotation axis L1 and the second rotation axis L2 are set side by side, it is achieved that the first clamping plate 110 and the second clamping plate 120 are spaced apart from each other in the release position, so that the pole ear portion 21 can enter therebetween. When switching to the clamping position, the first clamping plate 110 and the second clamping plate 120 rotate simultaneously, and respectively rotate to at least partially overlap with each other, so that the overlapping part of the two clamps the pole ear portion 21. The structure is simple and the operation is convenient, which is conducive to improving the clamping efficiency of the clamping mechanism 100 and effectively improving the working reliability of the clamping assembly.

[0164] According to some embodiments of the present application, optionally, Figure 9 As shown, the driving mechanism 200 is in transmission connection with the first clamping plate 110 for driving the first clamping plate 110 to rotate around a preset rotation axis L3, and the second clamping plate 120 is spaced apart from the preset rotation axis L3 and relatively fixed.

[0165] Optionally, the first clamping plate 110 rotates about a preset rotation axis L3 to switch between a first clamping position and a first release position, and the second clamping plate 120 is fixedly arranged at the second clamping position. When the first clamping plate 110 rotates to the first release position, the second clamping plate 120 is at the second clamping position, and the relative position of the first clamping plate 110 and the second clamping plate 120 is the release position. At this time, the second clamping plate 120 and the first clamping plate 110 are spaced apart from each other. When the first clamping plate 110 rotates to the first clamping position, the second clamping plate 120 is at the second clamping position, and the relative position of the first clamping plate 110 and the second clamping plate 120 is the clamping position. At this time, the first clamping plate 110 rotates to at least partially overlap with the second clamping plate 120.

[0166] Optionally, by rotating the first clamping plate 110 about the preset rotation axis L3 to switch the release position and the clamping position between the first clamping plate 110 and the second clamping plate 120, the first clamping plate 110 can rotate in the clockwise direction or the counterclockwise direction. When in the clamping position, the first clamping plate 110 and the second clamping plate 120 are respectively located on both sides of the pole ear portion 21 to clamp the pole ear portion 21 by using the overlapping portion of the first clamping plate 110 and the second clamping plate 120.

[0167] In the above manner, the driving mechanism 200 drives the first clamping plate 110 to rotate to switch the release position and the clamping position between the first clamping plate 110 and the second clamping plate 120. Furthermore, it is convenient to properly position the pole ear portion 21 by using the second clamping plate 120 at the release position. When switched to the clamping position, the first clamping plate 110 rotates to at least partially overlap with the second clamping plate 120 to clamp the pole ear portion 21 by using the overlapping portion of each other, which is beneficial to improving the clamping accuracy and effectively enhancing the working reliability of the clamping assembly.

[0168] According to some embodiments of the present application, optionally, as Figure 9 shown, the first clamping plate 110 and the second clamping plate 120 are rotatably connected, the first clamping plate 110 and the second clamping plate 120 can rotate relative to each other about the same preset rotation axis L3, and the driving mechanism 200 is in transmission connection with the first clamping plate 110 and / or the second clamping plate 120 to drive the first clamping plate 110 and / or the second clamping plate 120 to rotate about the preset rotation axis L3.

[0169] In the above manner, by providing the first clamping plate 110 and the second clamping plate 120 that rotate around the same preset rotation axis L3, the release position and the clamping position between the first clamping plate 110 and the second clamping plate 120 can be smoothly switched, which is conducive to smoothly clamping and guiding the tab portion 21 to penetrate into the through hole 14, effectively improving the clamping efficiency of the clamping mechanism 100 and effectively improving the working reliability of the tab-piercing device 2. Moreover, by setting the first clamping plate 110 and the second clamping plate 120 to rotate around the same preset rotation axis L3, the installation and positioning of the first clamping plate 110 and the second clamping plate 120 are facilitated, which is conducive to reducing the loading and unloading difficulty of the tab-piercing device 2.

[0170] According to some embodiments of the present application, optionally, as Figure 7 and Figure 8 shown, the driving mechanism 200 is used to drive the first clamping plate 110 and / or the second clamping plate 120 to rotate, so that the relative positions of the first clamping plate 110 and the second clamping plate 120 can be switched between the clamping position and the release position. In the clamping position, the first clamping plate 110 and the second clamping plate 120 at least partially overlap and abut against each other in the thickness direction F4 of the tab portion 21 to clamp both sides of the tab portion 21 in the thickness direction F4; in the release position, the abutment between the first clamping plate 110 and the second clamping plate 120 is cancelled to release the tab portion 21. In some embodiments, in the release position, the first clamping plate 110 and the second clamping plate 120 are arranged in a spaced and flat manner.

[0171] In the above manner, by arranging the first clamping plate 110 and the second clamping plate 120 in a spaced and flat manner in the release position, the space occupied by the clamping mechanism 100 can be reduced, and the installation and positioning of the first clamping plate 110 and the second clamping plate 120 are facilitated. While in the clamping position, the first clamping plate 110 and the second clamping plate 120 at least partially overlap to abut against both sides of the tab portion 21, which can improve the clamping stability and is not easy to damage the tab portion 21, effectively improving the working reliability of the clamping assembly.

[0172] According to some embodiments of the present application, optionally, as Figure 8 shown, when the relative positions between the first clamping plate 110 and the second clamping plate 120 are in the release position, a relief space 201 for accommodating the tab portion 21 is formed between the first clamping plate 110 and the second clamping plate 120. When the relative positions between the first clamping plate 110 and the second clamping plate 120 are in the clamping position, the overlapping portions of the first clamping plate 110 and the second clamping plate 120 are respectively located on the opposite side surfaces of the tab portion 21 to clamp the tab portion 21.

[0173] In the above manner, when in the release position, the tab portion 21 can enter the avoidance space 201 formed between the first clamping plate 110 and the second clamping plate 120. Thus, when switching to the clamping position, the first clamping plate 110 and the second clamping plate 120 only need to rotate to abut against both sides of the tab portion 21 to clamp the tab portion 21, without the need for additional position adjustment, effectively improving the clamping efficiency of the clamping mechanism 100. Moreover, the overlapping portions of the two are respectively located on the opposite side surfaces of the tab portion 21, which is conducive to improving the clamping stability, effectively reducing the possibility of damaging the tab portion 21, and effectively enhancing the working reliability of the clamping mechanism 100.

[0174] According to some embodiments of the present application, optionally, as Figure 8 shown, the first clamping plate 110 is provided with a first avoidance notch 202, and the second clamping plate 120 is provided with a second avoidance notch 203. When the relative position between the first clamping plate 110 and the second clamping plate 120 is in the release position, the first avoidance notch 202 and the second avoidance notch are oppositely arranged, and there is a spaced space 204 between the first avoidance notch 202 and the second avoidance notch 203. The first avoidance notch 202, the second avoidance notch 203 and the spaced space 204 communicate with each other to form the avoidance space 201.

[0175] In the above manner, by providing the first avoidance notch 202, the second avoidance notch 203 and the spaced space 204 to communicate and form the avoidance space 201, it is conducive for the tab portion 21 to smoothly enter the avoidance space 201 when the relative position between the first clamping plate 110 and the second clamping plate 120 is in the release position, without interference with the first clamping plate 110 and the second clamping plate 120 and causing damage. And the setting of the first avoidance notch 202 and the second avoidance notch 203 can reduce the space occupied by the clamping mechanism 100 on the premise of ensuring the size of the avoidance space 201, which is conducive to improving the space utilization rate and effectively enhancing the working reliability of the clamping mechanism 100.

[0176] According to some embodiments of the present application, optionally, as Figure 8As shown, the first clamping plate 110 includes a first plate body 111 and a first rotating portion 112. The first rotating portion 112 protrudes from one side edge of the first plate body 111 to form a first avoidance notch 202 between the first rotating portion 112 and the first plate body 111. The driving mechanism 200 is in transmission connection with the first rotating portion 112 to drive the first rotating portion 112 to rotate around the first rotation axis L1. Optionally, the second clamping plate 120 includes a second plate body 121 and a second rotating portion 122. The second rotating portion 122 protrudes from one side edge of the second plate body 121 to form a second avoidance notch 203 between the second rotating portion 122 and the second plate body 121. The driving mechanism 200 is in transmission connection with the second rotating portion 122 to drive the second rotating portion 122 to rotate around the second rotation axis L2.

[0177] In the above manner, by providing the first plate body 111 and the first rotating portion 112 to form the first avoidance notch 202, and providing the second plate body 121 and the second rotating portion 122 to form the second avoidance notch 203, when the relative position between the first clamping plate 110 and the second clamping plate 120 is in the release position, the pole ear portion 21 can be accommodated in the avoidance space 201. When switched to the clamping position, the driving mechanism 200 only needs to drive the first rotating portion 112 and the second rotating portion 122 to rotate to drive the first plate body 111 and the second plate body 121 to rotate, so as to clamp the pole ear portion 21. The operation is convenient and the structure is simple, effectively improving the clamping efficiency and working reliability of the clamping mechanism 100.

[0178] According to some embodiments of the present application, optionally, as Figure 7 and Figure 8 shown, the first clamping plate 110 and the second clamping plate 120 rotate in the same direction. In some embodiments, the first rotation axis L1 and the second rotation axis L2 are parallel to each other. In some embodiments, the first rotation axis L1 and the second rotation axis L2 are arranged perpendicular to the top 13, or parallel to the axis of the through hole 14.

[0179] In the above manner, the installation and positioning difficulty of the first clamping plate 110 and the second clamping plate 120 is effectively reduced, which is beneficial to smoothly clamping and guiding the pole ear portion 21 to penetrate into the through hole 14, effectively improving the clamping efficiency of the clamping mechanism 100 and effectively improving the working reliability of the pole ear threading device 2.

[0180] According to some embodiments of the present application, optionally, as Figure 8 shown, the ratio of the width of the first clamping plate 110 in the vertical direction F2 of the first rotation axis L1 to the width of the second clamping plate 120 in the vertical direction F3 of the second rotation axis L2 is 0.5 to 2. In some embodiments, the length of the first clamping plate 110 along the first rotation axis L1 is the same as the length of the second clamping plate 120 along the second rotation axis L2.

[0181] In some embodiments, the ratio of the width of the first clamping plate 110 in the vertical direction F2 of the first rotation axis L1 to the width of the second clamping plate 120 in the vertical direction F3 of the second rotation axis L2 is 0.5. In some embodiments, the ratio of the width of the first clamping plate 110 in the vertical direction F2 of the first rotation axis L1 to the width of the second clamping plate 120 in the vertical direction F3 of the second rotation axis L2 is 1. In some embodiments, the ratio of the width of the first clamping plate 110 in the vertical direction F2 of the first rotation axis L1 to the width of the second clamping plate 120 in the vertical direction F3 of the second rotation axis L2 is 1.5. In some embodiments, the ratio of the width of the first clamping plate 110 in the vertical direction F2 of the first rotation axis L1 to the width of the second clamping plate 120 in the vertical direction F3 of the second rotation axis L2 is 2.

[0182] In the above manner, by reasonably setting the ratio of the width of the first clamping plate 110 in the vertical direction F2 of the first rotation axis L1 to the width of the second clamping plate 120 in the vertical direction F3 of the second rotation axis L2, while effectively ensuring the smooth operation of the clamping mechanism 100, the clamping stability of the tab portion 21 is effectively improved, and the possibility of being unable to stably and reliably clamp the tab portion 21 due to the ratio of the widths of the two being too small or too large is effectively reduced. By reasonably setting the lengths of the first clamping plate 110 and the second clamping plate 120, the area of the overlapping portion between the two at the clamping position can be effectively ensured, effectively improving the space utilization rate while providing effective and reliable clamping for the tab portion 21.

[0183] According to some embodiments of the present application, optionally, as Figure 6 shown, the tab piercing device 2 includes a transmission mechanism 300. The driving mechanism 200 is in transmission connection with the transmission mechanism 300, and the transmission mechanism 300 is in transmission connection with the first clamping plate 110 and the second clamping plate 120.

[0184] In the above manner, by setting the transmission mechanism 300, the transmission connection between the driving mechanism 200 and the first clamping plate 110 and the second clamping plate 120 is realized, providing a basis for the switching between the release position and the clamping position, and effectively improving the working reliability of the tab piercing device 2.

[0185] According to some embodiments of the present application, optionally, as Figure 7As shown, the transmission mechanism 300 includes a first transmission rod 310 that rotates about a first rotation axis L1 and a second transmission rod 320 that rotates about a second rotation axis L2. The first transmission rod 310 is connected to the first clamping plate 110, and the second transmission rod 320 is connected to the second clamping plate 120. The driving mechanism 200 is in transmission connection with the first transmission rod 310 and the second transmission rod 320, and is used to drive the first transmission rod 310 to rotate about the first rotation axis L1 and drive the second transmission rod 320 to rotate about the second rotation axis L2.

[0186] In the above manner, by providing the first transmission rod 310 and the second transmission rod 320, the driving mechanism 200 can drive the first transmission rod 310 and the second transmission rod 320 to rotate respectively, so as to drive the first clamping plate 110 and the second clamping plate 120 to rotate respectively, so as to realize the rotation of the first clamping plate 110 and the second clamping plate 120 about the first rotation axis and the second rotation axis respectively, and further realize the switching between the release position and the clamping position, effectively improving the working reliability of the pole ear piercing device 2.

[0187] According to some embodiments of the present application, optionally, as Figure 7 shown, the transmission mechanism 300 includes a link mechanism 330. The link mechanism 330 is in transmission connection with the first transmission rod 310 and the second transmission rod 320, and the driving mechanism 200 is in transmission connection with the link mechanism 330. The driving mechanism 200 is used to drive the first transmission rod 310 and the second transmission rod 320 to rotate through the link mechanism 330.

[0188] In the above manner, by providing the link mechanism 330 to drive the first transmission rod 310 and the second transmission rod 320 to rotate, it is beneficial to smoothly switch between the release position and the clamping position, and further facilitate the clamping of the pole ear part 21, effectively improving the working reliability of the pole ear piercing device 2. Moreover, the link mechanism 330 has a stable structure, is convenient for loading and unloading, and is convenient for installation and maintenance.

[0189] According to some embodiments of the present application, optionally, as Figure 10 and Figure 11 shown, the link mechanism 330 includes a base 370, a first link 331, a second link 332 and a third link 333. The first link 331, the second link 332 and the third link 333 are arranged on one side of the base 370, and the third link 333 is in transmission connection with the first link 331 and the second link 332 respectively. The driving mechanism 200 is used to drive the third link 333 to rotate. The first transmission rod 310 and the second transmission rod 320 pass through the base 370 from the other side of the base 370 and are in transmission connection with the first link 331 and the second link 332 respectively.

[0190] In the above manner, by setting the link mechanism 330 to drive the first transmission rod 310 and the second transmission rod 320 to rotate, it is beneficial to smoothly switch between the release position and the clamping position of the clamping mechanism 100, thereby facilitating the clamping of the tab portion 21, effectively improving the working reliability of the tab-piercing device 2, and the link mechanism 330 has a strong load-bearing capacity and good impact resistance, which is beneficial to extending the service life of the tab-piercing device 2.

[0191] Further, as Figure 10 and Figure 11 shown, one end of the first link 331 and one end of the second link 332 are respectively drivingly connected to both ends of the third link 333, the other end of the first link 331 and the other end of the second link 332 are respectively connected to the base 370, the driving mechanism 200 drives the third link 333 to rotate, and the third link 333 drives the first link 331 and the second link 332 to rotate, thereby driving the first transmission rod 310 and the second transmission rod 320 to rotate to switch between the release position and the clamping position. As Figure 11 shown, the clamping mechanism 100 is in the release position, and as Figure 10 shown, the clamping mechanism 100 is in the clamping position.

[0192] According to some embodiments of the present application, optionally, as Figure 12 shown, the transmission mechanism 300 includes an input shaft 340 and a coupling 350. The driving mechanism 200 has an output shaft 210. The input shaft 340 and the output shaft 210 are connected by the coupling 350, and the input shaft 340 is drivingly connected to the link mechanism 330.

[0193] In the above manner, by setting the input shaft 340 and the coupling 350, the power output by the output shaft 210 of the driving mechanism 200 is input to the link mechanism 330 through the coupling 350 and the input shaft 340, which is convenient to operate and has a simple structure, effectively improving the working stability and reliability of the transmission mechanism 300.

[0194] According to some embodiments of the present application, optionally, as Figure 13 shown, the transmission mechanism 300 includes a gear mechanism 360. The gear mechanism 360 is drivingly connected to the first transmission rod 310 and the second transmission rod 320, and the driving mechanism 200 is drivingly connected to the gear mechanism 360. The driving mechanism 200 is used to drive the first transmission rod 310 and the second transmission rod 320 to rotate through the gear mechanism 360.

[0195] In the above manner, by setting the gear mechanism 360 to drive the first transmission rod 310 and the second transmission rod 320 to rotate, it is beneficial to smoothly switch between the release position and the clamping position of the clamping mechanism 100, thereby facilitating the clamping of the tab portion 21, effectively improving the working reliability of the tab piercing device 2. Moreover, the gear mechanism 360 has a stable structure, a relatively low manufacturing cost, is convenient for positioning, installation and disassembly, and effectively reduces the difficulty of installation and maintenance.

[0196] According to some embodiments of the present application, optionally, as Figure 13 shown, the gear mechanism 360 includes a base 370, a main gear 363, a first driven gear 361, and a second driven gear 362. The main gear 363, the first driven gear 361, and the second driven gear 362 are disposed on one side of the base 370, and the first driven gear 361 and the second driven gear 362 mesh with each other. The driving mechanism 200 is used to drive the first driving wheel to rotate. The first transmission rod 310 and the second transmission rod 320 pass through the base 370 from the other side of the base 370 and are respectively drivingly connected to the first driven gear 361 and the second driven gear 362.

[0197] In the above manner, by driving the main gear 363 to rotate through the driving mechanism 200, the rotation of the first driven gear 361 and the second driven gear 362 can be realized, and then the switching between the release position and the clamping position of the clamping mechanism 100 can be realized. The operation is convenient, the structure is simple, it is convenient for loading and unloading, and the structural stability is high, which is beneficial to improving the service life of the gear mechanism 360 and the working reliability of the tab piercing device 2.

[0198] According to some embodiments of the present application, optionally, as Figure 12 shown, the transmission mechanism 300 includes an input shaft 340 and a coupling 350. The driving mechanism 200 has an output shaft 210. The input shaft 340 and the output shaft 210 are connected through the coupling 350, and the input shaft 340 is drivingly connected to the gear mechanism 360.

[0199] In the above manner, by setting the input shaft 340 and the coupling 350, the power output by the output shaft 210 of the driving mechanism 200 is input into the gear mechanism 360 through the coupling 350 and the input shaft 340. The operation is convenient, the structure is simple, and the working stability and reliability of the transmission mechanism 300 are effectively improved.

[0200] According to some embodiments of the present application, optionally, as Figure 12 shown, the tab piercing device 2 includes a flange seat 400, and the driving mechanism 200 and the transmission mechanism 300 are connected through the flange seat 400.

[0201] In the above manner, by providing the flange base 400, the connection between the driving mechanism 200 and the transmission mechanism 300 is realized, effectively improving the connection stability between the driving mechanism 200 and the transmission mechanism 300, which is beneficial to enhancing the working stability and reliability of the transmission mechanism 300.

[0202] Further, the process of the housing 10 being sleeved onto the electrode assembly 20 includes a first stage. In the first stage, the clamping mechanism 100 is arranged to be able to move relative to the electrode assembly 20 together with the housing 10 to clamp the pole ear part 21 in the first stage. The process of the housing 10 being sleeved onto the electrode assembly 20 includes a second stage after the first stage. In the second stage, the clamping mechanism 100 is arranged to be able to move relative to the housing 10 in a direction away from each other and keep clamping the pole ear part 21, and then the clamped pole ear part 21 extends out of the accommodation cavity 11 through the through hole 14.

[0203] In the above manner, by the clamping mechanism 100 moving relative to the electrode assembly 20 together with the housing 10 in the first stage, it is possible to make the clamping mechanism 100 approach the pole ear part 21 while the electrode assembly 20 is gradually inserted into the housing, so as to clamp the pole ear part 21 in the first stage, and smoothly and fluently clamp the pole ear part 21 can be achieved, effectively improving the clamping efficiency of the clamping mechanism 100 and the assembly efficiency of the battery 1. By the clamping mechanism 100 moving relative to the housing 10 in a direction away from each other in the second stage and keeping clamping the pole ear part 21, it is possible to guide the pole ear part 21 to extend out of the accommodation cavity 11 through the through hole 14 while the electrode assembly 20 is further inserted into the housing. The assembly process is smooth and clear, effectively improving the efficiency of the pole ear part 21 passing through the through hole 14 and the assembly efficiency of the battery 1.

[0204] According to some embodiments of the present application, optionally, as Figure 7 and Figure 8 shown, the driving mechanism 200 is used to drive the clamping mechanism 100 to switch between the clamping position and the release position, and the clamping mechanism 100 is used to switch from the release position to the clamping position to clamp the pole ear part 21. Before the first stage, the driving mechanism 200 is used to drive the clamping mechanism 100 to be in the clamping position, and the clamping mechanism 100 is arranged to be able to move relative to the housing 10 to pass through the through hole 14 and extend into the accommodation cavity 11 in the clamping position. The driving mechanism 200 is used to drive the clamping mechanism 100 to switch from the clamping position to the release position after the clamping mechanism 100 extends into the accommodation cavity 11.

[0205] In the above manner, the clamping mechanism 100 in the clamping position in the first stage can smoothly pass through the through hole 14 and extend into the accommodation cavity 11. Compared with the clamping mechanism 100 passing through the through hole 14 in the release position, the space occupied by the clamping mechanism 100 can be effectively reduced, and the area of the through hole 14 required when the clamping structure passes through the through hole 14 can be reduced, effectively improving the space utilization rate. After the clamping mechanism 100 extends into the accommodation cavity 11, it switches from the clamping position to the release position, which facilitates the pole ear part 21 to enter the clampable range of the clamping mechanism 100, facilitating the clamping of the pole ear part 21, and effectively improving the reliability of the operation of the pole ear piercing device 2.

[0206] According to some embodiments of the present application, as Figure 14 shown, the assembly method of the battery 1 of the present application may include the following steps.

[0207] S100: Control the clamping mechanism to pass through the through hole and extend into the accommodation cavity, and control the housing to be sleeved on the electrode assembly.

[0208] First, control the clamping mechanism 100 with the relative position between the first clamping plate 110 and the second clamping plate 120 in the clamping position to pass through the through hole 14 and extend into the accommodation cavity 11, so as to reduce the area of the required through hole 14 and reduce the possibility of damaging the housing 10. Then, control the clamping mechanism 100 and the housing 10 to descend along the preset assembly direction F1 to approach the electrode assembly 20, and sleeve the housing 10 on the electrode assembly 20.

[0209] S200: During the process of the housing being sleeved on the electrode assembly, control the driving mechanism to drive the clamping mechanism to clamp the pole ear part in the accommodation cavity, and drive the clamping mechanism to guide the pole ear part to extend out of the accommodation cavity through the through hole.

[0210] The process of the housing 10 being sleeved on the electrode assembly 20 includes a first stage and a second stage arranged in sequence. In the first stage, control the clamping mechanism 100 and the housing 10 to move relative to the electrode assembly 20 together, and control the clamping mechanism 100 to switch the relative position between the first clamping plate 110 and the second clamping plate 120 to the release position in the accommodation cavity 11, so as to facilitate the pole ear part 21 to enter the clampable range of the clamping mechanism 100, and switch the relative position between the first clamping plate 110 and the second clamping plate 120 to the clamping position after the pole ear part 21 enters the clampable range of the clamping mechanism 100, so as to clamp the pole ear part 21 in the first stage. In the second stage, control the clamping mechanism 100 and the housing 10 to move relative to each other in a direction away from each other, and the clamping mechanism 100 keeps clamping the pole ear part 21, and then clamps the pole ear part 21 to extend out of the accommodation cavity 11 through the through hole 14, and enables the housing 10 to be further sleeved on the electrode assembly 20.

[0211] In the above manner, while the electrode assembly 20 is gradually inserted into the housing, the clamping mechanism 100 can clamp the tab portion 21 of the electrode. The tab portion 21 of the battery 1 can be smoothly guided through the through hole 14 and extend out of the accommodation cavity 11, so that the tab portion 21 is not likely to block the housing 10 from being sleeved on the electrode assembly 20, and the tab portion 21 is not likely to collide with the housing 10 to cause damage or fail to smoothly penetrate the through hole 14. Furthermore, the accurate insertion of the electrode assembly 20 into the housing can be achieved, and while the housing 10 is sleeved on the electrode assembly 20, the tab portion 21 is guided through the through hole 14 and extends out of the accommodation cavity 11, effectively improving the working stability and reliability of the tab 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.

[0212] According to some embodiments of the present application, optionally, as Figures 3 to 12As shown, the battery 1 includes a shell 10 and an electrode assembly 20. The shell 10 has a housing 11. A through hole 14 is provided on the shell 10 to connect the housing 11 with the outside. The electrode assembly 20 is arranged in the housing 11. The electrode ear device 2 is used to guide the pole ear portion 21 of the electrode assembly 20 to extend from the through hole 14. The pole ear device 2 includes a clamping mechanism 100 and a driving mechanism 200. The clamping mechanism 100 is used to clamp the pole ear portion 21. The driving mechanism 200 is connected to the clamping mechanism 100 in a transmission manner and is used to drive the clamping mechanism 100 to move. The driving mechanism 200 is configured to drive the clamping mechanism 100 to clamp the pole ear portion 21 located in the housing 11 and extend it out of the housing 11 through the through hole 14. The clamping mechanism 100 includes a plurality of clamping plates 130. The driving mechanism 200 is connected to at least one of the plurality of clamping plates 130 in a transmission manner and is used to drive at least one clamping plate 130 to move. Furthermore, the driving mechanism 200 is configured to drive the plurality of clamping plates 130 to clamp the circumference of the pole ear portion 21 so that the pole ear portion 21 can extend out of the accommodating cavity 11, and is configured to enable the plurality of clamping plates 130 to loosen the circumference of the pole ear portion 21 to release the pole ear portion 21. The plurality of clamping plates 130 include a first clamping plate 110 and a second clamping plate 120, and the driving mechanism 200 is configured to drive the first clamping plate 110 and the second clamping plate 120 to abut against both sides of the thickness direction F4 of the clamping pole ear portion 21. The driving mechanism 200 is used to drive at least one clamping plate 130 to rotate so that the plurality of clamping plates 130 can clamp or release the pole ear portion 21 together. The driving mechanism 200 is used to drive the first clamping plate 110 and the second clamping plate 120 to rotate. The first clamping plate 110 can rotate around the first rotation axis L1, and the second clamping plate 120 can rotate around the second rotation axis L2. The first rotation axis L1 and the second rotation axis L2 are arranged side by side. Alternatively, the driving mechanism 200 is connected to the first clamping plate 110 in a transmission manner, and is used to drive the first clamping plate 110 to rotate around a preset rotation axis L3. The second clamping plate 120 is spaced apart from the preset rotation axis L3 and is relatively fixed. The driving mechanism 200 is used to drive the first clamping plate 110 and / or the second clamping plate 120 to rotate so that the relative position of the first clamping plate 110 and the second clamping plate 120 can be switched between a clamping position and a release position; in the clamping position, the first clamping plate 110 and the second clamping plate 120 at least partially overlap and abut against each other in the thickness direction F4 of the pole ear portion 21 to clamp the two sides of the thickness direction F4 of the pole ear portion 21; in the release position, the abutment between the first clamping plate 110 and the second clamping plate 120 is cancelled to release the pole ear portion 21.The first clamping plate 110 is provided with a first avoidance notch 202, and the second clamping plate 120 is provided with a second avoidance notch 203; in the release position, the first avoidance notch 202 and the second avoidance notch 203 are arranged oppositely, and there is a spaced space 204 between the first avoidance notch 202 and the second avoidance notch 203. The first avoidance notch 202, the second avoidance notch 203 and the spaced space 204 communicate with each other to form an avoidance space 201. The first clamping plate 110 includes a first plate body 111 and a first rotating part 112. The first rotating part 112 protrudes from one side edge of the first plate body 111 to form the first avoidance notch 202 between the first rotating part 112 and the first plate body 111. The driving mechanism 200 is in transmission connection with the first rotating part 112 to drive the first rotating part 112 to rotate around the first rotation axis L1; and / or, the second clamping plate 120 includes a second plate body 121 and a second rotating part 122. The second rotating part 122 protrudes from one side edge of the second plate body 121 to form the second avoidance notch 203 between the second rotating part 122 and the second plate body 121. The driving mechanism 200 is in transmission connection with the second rotating part 122 to drive the second rotating part 122 to rotate around the second rotation axis L2. The rotation directions of the first clamping plate 110 and the second clamping plate 120 are the same; and / or, the first rotation axis L1 and the second rotation axis L2 are parallel to each other; and / or, the first rotation axis L1 and the second rotation axis L2 are arranged parallel to the axis of the through hole 14. The ratio of the width of the first clamping plate 110 in the vertical direction F2 of the first rotation axis L1 to the width of the second clamping plate 120 in the vertical direction F3 of the second rotation axis L2 is 0.5 to 2; and / or, the length of the first clamping plate 110 along the first rotation axis L1 is the same as the length of the second clamping plate 120 along the second rotation axis L2. The first clamping plate 110 and the second clamping plate 120 are rotatably connected. The first clamping plate 110 and the second clamping plate 120 can rotate relative to each other around the same preset rotation axis L3. The driving mechanism 200 is in transmission connection with the first clamping plate 110 and / or the second clamping plate 120 to drive the first clamping plate 110 and / or the second clamping plate 120 to rotate around the preset rotation axis L3. The pole tab device 2 includes a transmission mechanism 300. The driving mechanism 200 is in transmission connection with the transmission mechanism 300, and the transmission mechanism 300 is in transmission connection with the first clamping plate 110 and the second clamping plate 120. The transmission mechanism 300 includes a first transmission rod 310 rotating around the first rotation axis L1 and a second transmission rod 320 rotating around the second rotation axis L2. The first transmission rod 310 is connected to the first clamping plate 110, and the second transmission rod 320 is connected to the second clamping plate 120; the driving mechanism 200 is in transmission connection with the first transmission rod 310 and the second transmission rod 320 to drive the first transmission rod 310 to rotate around the first rotation axis L1 and drive the second transmission rod 320 to rotate around the second rotation axis L2.The transmission mechanism 300 includes a linkage mechanism 330. The linkage mechanism 330 is in transmission connection with a first transmission rod 310 and a second transmission rod 320. A driving mechanism 200 is in transmission connection with the linkage mechanism 330. The driving mechanism 200 is configured to drive the first transmission rod 310 and the second transmission rod 320 to rotate through the linkage mechanism 330. The linkage mechanism 330 includes a base 370, a first connecting rod 331, a second connecting rod 332, and a third connecting rod 333. The first connecting rod 331, the second connecting rod 332, and the third connecting rod 333 are disposed on one side of the base 370, and the third connecting rod 333 is in transmission connection with the first connecting rod 331 and the second connecting rod 332 respectively. The driving mechanism 200 is configured to drive the third connecting rod 333 to rotate; the first transmission rod 310 and the second transmission rod 320 pass through the base 370 from the other side of the base 370 and are respectively in transmission connection with the first connecting rod 331 and the second connecting rod 332. The transmission mechanism 300 includes an input shaft 340 and a coupling 350. The driving mechanism 200 has an output shaft 210. The input shaft 340 and the output shaft 210 are connected by the coupling 350, and the input shaft 340 is in transmission connection with the linkage mechanism 330. The transmission mechanism 300 includes a gear mechanism 360. The gear mechanism 360 is in transmission connection with the first transmission rod 310 and the second transmission rod 320. The driving mechanism 200 is in transmission connection with the gear mechanism 360. The driving mechanism 200 is configured to drive the first transmission rod 310 and the second transmission rod 320 to rotate through the gear mechanism 360. The gear mechanism 360 includes a base 370, a main gear 363, a first driven gear 361, and a second driven gear 362. The main gear 363, the first driven gear 361, and the second driven gear 362 are disposed on one side of the base 370, and the first driven gear 361 and the second driven gear 362 mesh with each other. The driving mechanism 200 is configured to drive the first driving gear to rotate; the first transmission rod 310 and the second transmission rod 320 pass through the base 370 from the other side of the base 370 and are respectively in transmission connection with the first driven gear 361 and the second driven gear 362. The transmission mechanism 300 includes an input shaft 340 and a coupling 350. The driving mechanism 200 has an output shaft 210. The input shaft 340 and the output shaft 210 are connected by the coupling 350, and the input shaft 340 is in transmission connection with the gear mechanism 360. The tab piercing device 2 includes a flange seat 400. The driving mechanism 200 and the transmission mechanism 300 are connected through the flange seat 400. The process of the housing 10 being sleeved onto the electrode assembly 20 includes a first stage. In the first stage, the clamping mechanism 100 is configured to be able to move relative to the electrode assembly 20 together with the housing 10 to clamp the tab portion 21 in the first stage. The process of the housing 10 being sleeved onto the electrode assembly 20 includes a second stage following the first stage. In the second stage, the clamping mechanism 100 is configured to be able to move relative to the housing 10 in a direction away from each other and keep clamping the tab portion 21, and further clamp the tab portion 21 to extend out of the accommodation cavity 11 through the through hole 14.

[0213] According to some embodiments of the present application, such asFigure 4 As shown, the assembling device 3 includes the above-mentioned pole tab device 2. With such an arrangement, the pole tab portion 21 can smoothly extend out of the housing 10, which can effectively reduce the assembly difficulty of the battery 1 and effectively improve the assembly efficiency of the battery 1.

[0214] In summary, the embodiments of the present application can enable the pole tab portion 21 to smoothly extend out of the housing 10, which can effectively reduce the assembly difficulty of the battery 1 and effectively improve the assembly efficiency of the battery 1.

[0215] It should be noted later that: the above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be covered by the scope of the claims and the description of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery ear-piercing device, It is 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: A clamping mechanism, used for clamping the pole lug portion; A driving mechanism, drivingly connected to the clamping mechanism, and used to drive the clamping mechanism to move; Wherein, the driving mechanism is configured to drive the clamping mechanism to clamp the pole ear portion located in the accommodating cavity so as to extend out of the accommodating cavity through the through hole.

2. The electrode lug device according to claim 1, It is characterized in that The clamping mechanism comprises a plurality of clamping plates, and the driving mechanism is in transmission connection with at least one of the plurality of clamping plates, and is used to drive at least one of the clamping plates to move; Furthermore, the driving mechanism is configured to drive the plurality of clamping plates to clamp the circumference of the pole ear portion so that the pole ear portion can extend out of the accommodating cavity, and is configured to enable the plurality of clamping plates to loosen the circumference of the pole ear portion so as to release the pole ear portion.

3. The electrode lug device according to claim 2, It is characterized in that The plurality of clamping plates include a first clamping plate and a second clamping plate, and the driving mechanism is configured to be able to drive the first clamping plate and the second clamping plate to abut against and clamp both sides of the lug portion in a thickness direction.

4. The electrode lug device according to claim 3, It is characterized in that The driving mechanism is used to drive at least one of the clamping plates to rotate, so that a plurality of the clamping plates can clamp or release the pole lug portion together.

5. The electrode lug device according to claim 4, It is characterized in that The driving mechanism is used to drive the first clamping plate and the second clamping plate to rotate, the first clamping plate can rotate around a first rotation axis, and the second clamping plate can rotate around a second rotation axis; the first rotation axis and the second rotation axis are arranged side by side; or, The driving mechanism is transmission-connected to the first clamping plate and is used for driving the first clamping plate to rotate around a preset rotation axis. The second clamping plate is spaced apart from the preset rotation axis and relatively fixed.

6. The electrode lug device according to claim 5, It is characterized in that The driving mechanism is used to drive the first clamping plate and / or the second clamping plate to rotate so that the relative position of the first clamping plate and the second clamping plate can be switched between a clamping position and a release position; in the clamping position, the first clamping plate and the second clamping plate at least partially overlap and abut against each other in the thickness direction of the pole ear portion to clamp the two sides of the thickness direction of the pole ear portion; in the release position, the abutment between the first clamping plate and the second clamping plate is cancelled to release the pole ear portion.

7. The electrode lug device according to claim 6, It is characterized in that The first clamping plate is provided with a first avoidance notch, and the second clamping plate is provided with a second avoidance notch; at the release position, the first avoidance notch and the second avoidance notch are oppositely arranged, and there is a spaced space between the first avoidance notch and the second avoidance notch, and the first avoidance notch, the second avoidance notch and the spaced space communicate with each other to form an avoidance space.

8. The ear-piercing device according to claim 7, wherein, the first clamping plate includes a first plate body and a first rotating part, the first rotating part protrudes from one side edge of the first plate body to form the first avoidance notch between the first rotating part and the first plate body, and the driving mechanism is in transmission connection with the first rotating part to drive the first rotating part to rotate around the first rotation axis; and / or, the second clamping plate includes a second plate body and a second rotating part, the second rotating part protrudes from one side edge of the second plate body to form the second avoidance notch between the second rotating part and the second plate body, and the driving mechanism is in transmission connection with the second rotating part to drive the second rotating part to rotate around the second rotation axis.

9. The ear-piercing device according to claim 5, wherein, the first clamping plate and the second clamping plate rotate in the same direction; and / or, the first rotation axis and the second rotation axis are parallel to each other; and / or, the first rotation axis and the second rotation axis are arranged parallel to the axis of the through hole.

10. The ear-piercing device according to claim 5, wherein, the ratio of the width of the first clamping plate in the direction perpendicular to the first rotation axis to the width of the second clamping plate in the direction perpendicular to the second rotation axis is 0.5 to 2; and / or, the length of the first clamping plate along the first rotation axis is the same as the length of the second clamping plate along the second rotation axis.

11. The ear-piercing device according to claim 4, wherein, the first clamping plate and the second clamping plate are rotatably connected, the first clamping plate and the second clamping plate can rotate relative to each other around the same preset rotation axis, and the driving mechanism is in transmission connection with the first clamping plate and / or the second clamping plate to drive the first clamping plate and / or the second clamping plate to rotate around the preset rotation axis.

12. The ear-piercing device according to claim 3, wherein, the ear-piercing device includes a transmission mechanism, the driving mechanism is in transmission connection with the transmission mechanism, and the transmission mechanism is in transmission connection with the first clamping plate and the second clamping plate.

13. The ear-piercing device according to claim 12, wherein, the transmission mechanism includes a first transmission rod rotating around the first rotation axis and a second transmission rod rotating around the second rotation axis, the first transmission rod is connected to the first clamping plate, and the second transmission rod is connected to the second clamping plate; The driving mechanism is in transmission connection with the first transmission rod and the second transmission rod, and is used to drive the first transmission rod to rotate around the first rotation axis and drive the second transmission rod to rotate around the second rotation axis.

14. The pole tab piercing device according to claim 13, wherein, the transmission mechanism includes a link mechanism, the link mechanism is in transmission connection with the first transmission rod and the second transmission rod, the driving mechanism is in transmission connection with the link mechanism, and the driving mechanism is used to drive the first transmission rod and the second transmission rod to rotate through the link mechanism.

15. The pole tab piercing device according to claim 14, wherein, the link mechanism includes a base, a first link, a second link and a third link. The first link, the second link and the third link are arranged on one side of the base, and the third link is in transmission connection with the first link and the second link respectively. The driving mechanism is used to drive the third link to rotate; the first transmission rod and the second transmission rod penetrate through the base from the other side of the base and are respectively in transmission connection with the first link and the second link.

16. The pole tab piercing device according to claim 15, wherein, the transmission mechanism includes an input shaft and a coupling. The driving mechanism has an output shaft, the input shaft and the output shaft are connected through the coupling, and the input shaft is in transmission connection with the link mechanism.

17. The pole tab piercing device according to claim 13, wherein, the transmission mechanism includes a gear mechanism, the gear mechanism is in transmission connection with the first transmission rod and the second transmission rod, the driving mechanism is in transmission connection with the gear mechanism, and the driving mechanism is used to drive the first transmission rod and the second transmission rod to rotate through the gear mechanism.

18. The pole tab piercing device according to claim 17, wherein, the gear mechanism includes a base, a main gear, a first driven gear and a second driven gear. The main gear, the first driven gear and the second driven gear are arranged on one side of the base, and the first driven gear and the second driven gear mesh with each other. The driving mechanism is used to drive the driving wheel to rotate; the first transmission rod and the second transmission rod penetrate through the base from the other side of the base and are respectively in transmission connection with the first driven gear and the second driven gear.

19. The pole tab piercing device according to claim 18, wherein, the transmission mechanism includes an input shaft and a coupling. The driving mechanism has an output shaft, the input shaft and the output shaft are connected through the coupling, and the input shaft is in transmission connection with the gear mechanism.

20. The pole tab piercing device according to claim 12, wherein, the pole tab piercing device includes a flange seat, and the driving mechanism and the transmission mechanism are connected through the flange seat.

21. The pole tab piercing device according to claim 1, wherein, The process of fitting the housing onto the electrode assembly includes a first stage; in the first stage, the clamping mechanism is arranged to be able to move relative to the electrode assembly together with the housing to clamp the tab portion in the first stage.

22. The tab-passing device according to claim 21, wherein, the process of fitting the housing onto the electrode assembly includes a second stage following the first stage; in the second stage, the clamping mechanism is arranged to be able to move relative to the housing in a direction away from each other and maintain clamping of the tab portion, and further clamp the tab portion to extend out of the accommodation cavity through the through hole.

23. An assembly device for a battery, wherein, it includes: a housing-fitting device and the tab-passing device according to any one of claims 1-22, the housing-fitting device is used to fit the electrode assembly into the housing from the open end of the housing; the housing-fitting device includes a housing fixing mechanism and a carrying component, the housing fixing mechanism is used to fix the housing, and the carrying component is used to carry the electrode assembly; wherein, the housing fixing mechanism and the tab-passing device are arranged to be able to lift relative to the carrying component to correspondingly move away from or close to the carrying component; the tab-passing device is used to penetrate into the accommodation cavity through the through hole before clamping the tab portion; the housing fixing mechanism is used to fit the housing onto the electrode assembly; the driving mechanism is used to drive the clamping mechanism to clamp the tab portion in the accommodation cavity and drive the clamping mechanism to guide the tab portion to extend out of the accommodation cavity through the through hole.

24. An assembly method for a battery, wherein, the battery includes a housing and an electrode assembly; the housing has an accommodation cavity and a through hole communicating the accommodation cavity with the outside, the electrode assembly is arranged in the accommodation cavity, and the tab portion of the electrode assembly extends out from the through hole; the assembly method includes: controlling the clamping mechanism to pass through the through hole and extend into the accommodation cavity, and controlling the housing to be fitted onto the electrode assembly; during the process of fitting the housing onto the electrode assembly, controlling the driving mechanism to drive the clamping mechanism to clamp the tab portion in the accommodation cavity and drive the clamping mechanism to guide the tab portion to extend out of the accommodation cavity through the through hole.

25. The assembly method according to claim 24, wherein, the controlling the driving mechanism to drive the clamping mechanism to clamp the tab portion and drive the clamping mechanism to guide the tab portion to extend out of the accommodation cavity includes: in the first stage, controlling the clamping mechanism and the housing to move relative to the electrode assembly together to clamp the tab portion in the first stage; in the second stage, controlling the clamping mechanism and the housing to move relative to each other in a direction away from each other and maintain clamping of the tab portion, and further clamp the tab portion to extend out of the accommodation cavity through the through hole.

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