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 communicated with the containing cavity and the outside is formed in the shell, the electrode assembly is arranged in the containing cavity, and the tab penetrating device is used for guiding a tab part of the electrode assembly to extend out of the through hole. The tab penetrating device comprises a guide part and a supporting mechanism, the guide part is used for penetrating into the through hole, and the supporting mechanism is connected with the guide part and used for fixing the first end of the guide part. And the guide piece is used for extending into the accommodating cavity and guiding the tab part to extend 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 technical field of batteries, in particular to a through-pole ear device, an assembly device and an assembly method for batteries. Background Art

[0002] A battery refers to a cup, tank or other container or a partial space of a composite container containing an electrolyte solution and metal electrodes to generate an electric current, and is a device that can convert chemical energy into electrical energy. With the development of technology, batteries with the advantages of being convenient to carry, easy to charge and discharge, and providing stable power supply for a long time are widely used in fields such as automobiles, household appliances, aerospace, etc.

[0003] The pole ear part of a battery is a metal conductor that leads the positive and negative electrodes out of the battery cell case. Therefore, during the assembly process of the battery, the pole ear part of the battery needs to be led out of the case to serve as a 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 case, the pole ear part is prone to bend inside the case and cannot extend out of the case, resulting in a high difficulty in the assembly preparation process of the battery and a low yield rate of the battery preparation. Summary of the Invention

[0004] The main technical problem to be solved by the present application is to provide a solution such that the pole ear part can smoothly extend out of the case, effectively reducing the assembly difficulty of the battery and effectively improving the assembly efficiency of the battery.

[0005] In a first aspect, the present application provides a through-pole ear device for a battery. The battery includes a case and an electrode assembly; the case has a receiving cavity, and a through-hole communicating the receiving cavity with the outside is provided on the case. The electrode assembly is disposed in the receiving cavity, and the through-pole ear device is used to guide the pole ear part of the electrode assembly to extend out from the through-hole. The through-pole ear device includes a guiding member and a supporting mechanism. The guiding member is used to penetrate into the through-hole, and the supporting mechanism is connected to the guiding member and is used to fix the first end of the guiding member. Among them, the guiding member is used to extend into the receiving cavity and guide the pole ear part to pass through the through-hole and extend out of the receiving cavity.

[0006] By the above method, by providing a guiding member that can extend into the receiving cavity to guide the pole ear part, it can be achieved that during the assembly process of the battery, when the case is sleeved on the electrode assembly, the pole ear part can contact the guiding member. Without affecting and damaging the case and the pole ear part, it can guide the pole ear part to smoothly penetrate into 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 the pole ear part is not prone to collide with the case and cause damage or failure to smoothly penetrate into the through-hole. Furthermore, the accurate insertion of the electrode assembly into the case is realized, effectively improving the working stability and reliability of the through-pole ear device, effectively reducing the assembly difficulty of the battery, and effectively improving the assembly efficiency and yield rate of the battery.

[0007] In some embodiments, the support mechanism is configured to drive the deflector to deflect, such that the extending direction of the deflector forms an angle with the preset assembly direction, so as to obliquely guide the pole ear portion to extend out of the accommodation cavity through the through hole.

[0008] In the above manner, by setting the extending direction of the deflector to form an angle with the preset assembly direction, the deflector can use a reasonable inclination angle to guide the pole ear portion, facilitating the deflector to provide a relatively gentle guide to the pole ear portion, so that the pole ear portion can be guided into the through hole without damage, and it is not easy to occur that the pole ear portion is bent or stuck and cannot penetrate, effectively improving the working stability and reliability of the pole ear threading device.

[0009] In some embodiments, an angle is formed between the extending direction of the deflector and the extending direction of the pole ear portion, and the extending direction of the pole ear portion is set to form an angle with the preset assembly direction.

[0010] In the above manner, by setting an angle between the extending direction of the deflector and the extending direction of the pole ear portion, and setting the extending direction of the pole ear portion to form an angle with the preset assembly direction, it is beneficial to realize the guiding of the pole ear portion by the deflector, effectively avoiding the pole ear portion from colliding with the housing and causing bending or damage, effectively reducing the assembly difficulty of the battery, and effectively improving the assembly efficiency and the yield rate of the battery.

[0011] In some embodiments, the pole ear portion has a first side surface and a second side surface facing away from each other, and the pole ear portion is inclined toward the side where the first side surface is located relative to the preset assembly direction; the second end of the deflector is inclined toward the side where the first side surface is located relative to the first end and contacts the pole ear portion on the side where the first side surface is located.

[0012] In the above manner, the pole ear portion can be lapped on the surface of the inclined deflector, so that the deflector can guide the pole ear portion during the process of the electrode assembly entering the housing, effectively reducing the assembly difficulty of the battery, and effectively improving the assembly efficiency and the yield rate of the battery.

[0013] In some embodiments, with the pole ear portion as the boundary, the deflector is set to obliquely extend from the side where the second side surface is located to the first side surface and contact the pole ear portion on the side where the first side surface of the pole ear portion is located.

[0014] In the above manner, by setting the deflector to obliquely extend from the side where the second side surface is located to the first side surface, the deflector can guide the pole ear portion relatively gently, effectively avoiding the pole ear portion from colliding with the deflector or the housing and causing bending or damage, effectively reducing the assembly difficulty of the battery, and effectively improving the assembly efficiency and the yield rate of the battery.

[0015] In some embodiments, the support mechanism includes a base, a flipping drive motor, and a clamping mechanism. The clamping mechanism is disposed on the base, and the flipping drive motor is disposed on the base and is in transmission connection with the clamping mechanism. The clamping mechanism clamps the guiding member, and the flipping drive motor is configured to drive the clamping mechanism to rotate so as to drive the guiding member to deflect.

[0016] In the above manner, by providing the flipping drive motor to drive the clamping mechanism to rotate so as to drive the guiding member to deflect, the inclination angle of the guiding member can be adjusted, enabling the guiding member to penetrate into the through hole at a reasonable inclination angle, thereby gently guiding the tab portion, which is beneficial to improving the working reliability of the tab-piercing device.

[0017] In some embodiments, the clamping mechanism includes a rotating seat and a clamping block. The rotating seat includes a connecting portion, an extending portion, and a limiting portion. The connecting portion and the limiting portion are disposed at both ends of the extending portion and extend in the same side direction of the extending portion. The extending directions of the limiting portion and the connecting portion are perpendicular to the extending direction of the extending portion. The connecting portion is rotatably connected to the base. The clamping block is disposed on the same side of the extending portion and is located between the connecting portion and the limiting portion. During the process of the housing being sleeved onto the electrode assembly, a part of the extending portion, the clamping block, and the limiting portion are oppositely disposed with respect to the top of the housing. In the extending directions of the limiting portion and the connecting portion, the height of the clamping block is lower than the height of the limiting portion, and the clamping block is used to clamp the guiding member.

[0018] In the above manner, by providing the clamping block to fix the guiding member to the clamping mechanism and providing the rotating seat to achieve the deflection of the guiding member, the guiding member can guide the tab portion in a suitable inclined posture, effectively improving the working stability and reliability of the tab-piercing device. In addition, by setting the height of the clamping block to be lower than the height of the limiting portion in the extending directions of the limiting portion and the connecting portion, the limiting portion is used to limit the length of the guiding member extending into the accommodating cavity, effectively reducing the possibility of damage to the tab portion or the housing due to the overlong length of the guiding member extending into the accommodating cavity, which is beneficial to improving the working reliability and stability of the tab-piercing device.

[0019] In some embodiments, the guiding member is provided in a sheet shape, and one main surface of the guiding member is used for the tab portion to overlap.

[0020] In the above manner, by providing the sheet-shaped guiding member, a smooth main surface is provided for the tab portion to be guided, which is beneficial to improving the guiding efficiency and stability of the guiding member for the tab portion and is beneficial to reducing the assembly difficulty of the battery.

[0021] In some embodiments, the support mechanism fixes the first end of the guiding member, such that the second end of the guiding member is suspended.

[0022] In the above manner, the first end of the guiding member is fixed by the supporting mechanism, and the second end of the guiding member is suspended, so that while the guiding member is fixed, the suspended second end can extend into the accommodating cavity, thereby guiding the tab ear portion, with a simple and effective structure, which is beneficial to improving the guiding efficiency and stability of the guiding member for the tab ear portion, and is beneficial to reducing the assembly difficulty of the battery.

[0023] In some embodiments, the process of the housing being sleeved onto the electrode assembly includes a first stage. In the first stage, the supporting mechanism is arranged to be able to move relative to the electrode assembly together with the housing, and the guiding member is used to contact the tab ear portion in the first stage and allow the tab ear portion to slide on the guiding member, so that the tab ear portion is lapped on the guiding member.

[0024] In the above manner, in the first stage, the supporting mechanism and the housing move relative to the electrode assembly together, so as to enable the guiding member to extend into the through hole and contact the tab ear portion, thereby making the tab ear portion lap on the guiding member and slide along the guiding member, so as to guide the tab ear portion into a posture convenient for extending out of the through hole, and can smoothly and fluently guide the tab ear portion, effectively improving the guiding efficiency of the tab ear piercing device and the assembly efficiency of the battery.

[0025] 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 supporting mechanism is arranged to be able to move relative to each other in a direction away from each other with the housing, so that the guiding member and the housing move away from each other. In the second stage, the guiding member is arranged to keep in contact with and relatively stationary with the tab ear portion, and then guide the tab ear portion to pass through the through hole and extend out of the accommodating cavity during the relative movement of the housing away.

[0026] In the above manner, by the supporting mechanism and the guiding member moving relative to the housing in a direction away from each other in the second stage, and the guiding member keeping in contact with and relatively stationary with the tab ear portion, so as to be able to guide the tab ear portion to penetrate into 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 portion penetrating into the through hole and the assembly efficiency of the battery.

[0027] In a second aspect, the present application provides an assembly device for a battery. The assembly device includes a housing insertion device and the tab ear piercing device as described above. The housing insertion device is used to insert the electrode assembly into the housing from the open end of the housing. The housing insertion 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 ear piercing device can move relative to the carrying component to correspondingly move away from or close to the carrying component; the guiding member is arranged such that its second end can pass through the through hole and extend into the accommodating cavity; the housing fixing mechanism is used to sleeve the housing onto the electrode assembly; the guiding member is used to contact the tab ear portion in the accommodating cavity, so that the tab ear portion is lapped on the guiding member, so as to guide the tab ear portion to pass through the through hole and extend out of the accommodating cavity.

[0028] In the above manner, when the battery housing is sleeved onto the electrode assembly, the tab portion of the battery can be smoothly guided through the through hole, so that the tab portion is not likely to block the housing from being sleeved onto the electrode assembly, and the tab portion is not likely to collide with the housing, causing damage or being unable to pass through the through hole smoothly. Furthermore, the accurate insertion of the electrode assembly into the housing can be achieved, effectively improving the working stability and reliability of the tab-passing device, effectively reducing the assembly difficulty of the battery, and effectively improving the assembly efficiency and the qualified rate of the battery.

[0029] In some embodiments, the assembly device includes a tab welding device, a terminal welding device, and a bottom cover welding device. Among them, the tab welding device is used to weld a plurality of tab pieces of the electrode assembly to form a tab portion; the terminal welding device is used to weld the tab portion passing through the through hole to the side of the terminal of the housing facing away from the accommodation cavity; the bottom cover welding device is used to weld the bottom cover to the open end of the housing.

[0030] In the above manner, by providing a tab welding device, a terminal welding device, and a bottom cover welding device, the assembly device can form the tab portion, connect the tab portion to the terminal, and connect the bottom cover to the housing, which is beneficial to improving the connection stability of each part structure of the battery and the working stability and reliability of the battery.

[0031] In a third aspect, the present application provides a battery assembly method. 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 is provided on the housing. The electrode assembly is disposed in the accommodation cavity, and a tab-passing device is used to guide the tab portion of the electrode assembly to extend out of the through hole. The assembly method includes: controlling the guide member to penetrate into the accommodation cavity through the through hole, and controlling the housing to be sleeved onto the electrode assembly; during the process of sleeving the housing onto the electrode assembly, controlling the guide member to contact the tab portion so that the tab portion overlaps on the guide member to guide the tab portion to pass through the through hole and extend out of the accommodation cavity.

[0032] In the above manner, the tab portion of the battery can be smoothly guided through the through hole, so that the tab portion is not likely to block the housing from being sleeved onto the electrode assembly, and the tab portion is not likely to collide with the housing, causing damage or being unable to pass through the through hole smoothly. Furthermore, the accurate insertion of the electrode assembly into the housing can be achieved, and the tab portion is guided through the through hole while the housing is sleeved onto the electrode assembly, effectively improving the working stability and reliability of the tab-passing device, effectively reducing the assembly difficulty of the battery, and effectively improving the assembly efficiency of the battery.

[0033] In some embodiments, the control guide contacts the ear portion of the pole such that the ear portion of the pole overlaps on the guide, including: in the first stage, the control support mechanism and the housing move relative to the electrode assembly together to drive the guide to contact the ear portion of the pole in the first stage, such that the ear portion of the pole overlaps on the guide; in the second stage, the control support mechanism and the housing move relatively away from each other, such that the guide and the housing move away from each other, and the control support mechanism keeps the guide in contact with and relatively stationary to the ear portion of the pole, so as to guide the ear portion of the pole through the through-hole and extend out of the accommodation cavity during the relatively far movement of the housing.

[0034] In the above manner, by moving the support mechanism and the housing relative to the electrode assembly together in the first stage, it is possible to achieve the contact between the guide and the ear portion of the pole while the electrode assembly gradually enters the housing. In the second stage, the support mechanism and the housing move relatively away from each other and keep the guide in contact with the ear portion of the pole, which can guide the ear portion of the pole to penetrate into the through-hole while the electrode assembly further enters the housing. The assembly process is smooth and clear, effectively improving the efficiency of the ear portion of the pole penetrating into the through-hole and the assembly efficiency of the battery.

[0035] In some embodiments, controlling the guide to penetrate into the accommodation cavity through the through-hole includes: controlling the support mechanism to drive the guide to deflect such that the extending direction of the guide forms an angle with the preset assembly direction; controlling the support mechanism to make the guide penetrate into the accommodation cavity through the through-hole in the deflected state.

[0036] In the above manner, it is possible to provide conditions for guiding the ear portion of the pole subsequently while enabling the guide to smoothly penetrate into the accommodation cavity. The extending direction of the guide forming an angle with the preset assembly direction can provide a relatively gentle guiding trajectory for the ear portion of the pole, so that the ear portion of the pole is not easily bent or deformed, which is beneficial to improving the reliability of the assembly and can improve the efficiency of the electrode assembly entering the housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] By reading the detailed description of the preferred embodiments below, 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 to the present application. And in all the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0038] Figure 1 is a schematic structural diagram of a vehicle according to one or more embodiments;

[0039] Figure 2 is an exploded structural diagram of a battery according to one or more embodiments;

[0040] Figure 3 is an exploded structural diagram of a battery according to one or more embodiments;

[0041] Figure 4 Schematic structural diagram of an assembly device according to one or more embodiments;

[0042] Figure 5 Schematic structural diagram of a battery assembly system according to one or more embodiments;

[0043] Figure 6 Schematic structural diagram of a pole tab piercing device according to one or more embodiments;

[0044] Figure 7 is Figure 6 Schematic diagram of an implementation scenario of the pole tab piercing device shown;

[0045] Figure 8 is Figure 6 Another schematic diagram of an implementation scenario of the pole tab piercing device shown;

[0046] Figure 9 is Figure 8 Schematic cross-sectional structure diagram of the pole tab piercing device shown along the A-A cutting line;

[0047] Figure 10 is Figure 6 Front view of the pole tab piercing device shown;

[0048] Figure 11 Schematic flow diagram of an embodiment of the battery assembly method of the present application.

[0049] The reference numerals in the specific embodiments are as follows:

[0050] Vehicle 1000a;

[0051] Power supply battery 100a; Controller 200a; Motor 300a;

[0052] Box 10a; First part 11a; Second part 12a;

[0053] Preset assembly direction F1; Extension direction F2 of the guide; Extension direction F3 of the pole ear part; Extension direction F4 of the connecting part; Extension direction F5 of the extension part;

[0054] 1 Battery; 10 Housing; 11 Accommodating Chamber; 12 Open End; 13 Top; 14 Through Hole; 15 Terminal; 20 Electrode Assembly; 21 Ear; 211 First Side; 102 Second Side; 30 Bottom Cover; 2 Ear-Passing Device; 201 First End; 202 Second End; 100 Guide; 200 Support Mechanism; 210 Base; 220 Flip Driving Motor; 221 First Synchronous Pulley; 222 Second Synchronous Pulley; 223 Timing Belt; 230 Clamping Mechanism; 231 Rotating Seat; 232 Connecting Portion; 233 Extending Portion; 234 Limiting Portion; 235 Clamping Block; 3 Assembly Equipment; 40 Housing Insertion Device; 41 Housing Fixing Mechanism; 42 Carrying Assembly; 50 Ear Welding Device; 60 Terminal Welding Device; 70 Bottom Cover Welding Device; 80 Pairing Device; 4 Conveying Equipment; 5 Battery Assembly System. Detailed Embodiments

[0055] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to 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 scope of protection of the present application.

[0056] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill 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.

[0057] 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, "a plurality" means more than two, unless otherwise specifically defined.

[0058] Reference to "embodiments" herein means that a particular feature, structure or characteristic 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 will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0059] In the description of the embodiments of the present application, the term "and / or" is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after.

[0060] In the description of the embodiments of the present application, the term "a plurality of" refers to two or more (including two). Similarly, "a plurality of groups" refers to two or more groups (including two groups), and "a plurality of pieces" refers to two or more pieces (including two pieces).

[0061] In the description of the embodiments of the present application, the orientation or positional relationship indicated by technical terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is the orientation or positional relationship 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. Therefore, it should not be construed as a limitation to the embodiments of the present application.

[0062] 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 circumstances.

[0063] 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 convert the chemical energy into electrical energy controllably. In a recyclable battery, after discharging, the active substances can be activated by charging and continue to be used.

[0064] A battery refers to a cup, trough, or other container or part of the 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.

[0065] The tab part of the battery is a metal conductor that leads the positive and negative electrodes out of the battery cell and into the housing. Therefore, during the battery assembly process, the tab 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 battery assembly process, when the battery cell is assembled into the housing, the tab 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. As a result, the difficulty of the battery assembly preparation process is relatively high, and the yield rate of battery preparation is relatively low.

[0066] In order to accurately insert the electrode assembly into the housing and smoothly extend the tab part out of the housing, the tab part can be guided when the electrode assembly is inserted into the housing, so that the tab part can smoothly extend out of the housing.

[0067] Based on the above considerations, the present application provides a battery tab piercing device, an assembly device, and an assembly method. The battery includes a housing and an electrode assembly; the housing has a receiving cavity, and a through hole communicating the receiving cavity with the outside is formed on the housing. The electrode assembly is disposed in the receiving cavity, and the tab piercing device is used to guide the tab part of the electrode assembly to extend out of the through hole. The tab piercing device includes a guiding member and a supporting mechanism. The guiding member is used to penetrate the through hole, and the supporting mechanism is connected to the guiding member and used to fix the first end of the guiding member. Among them, the guiding member is used to extend into the receiving cavity and guide the tab part to pass through the through hole and extend out of the receiving cavity. In this way, without affecting and damaging the housing, the tab part can be smoothly guided into the through hole, so that the tab part can smoothly extend out of the housing, so that the tab part is not likely to block the housing from being sleeved on the electrode assembly, and the tab part is not likely to collide with the housing and cause damage or fail to smoothly penetrate the through hole. Furthermore, the accurate insertion of the electrode assembly into the housing can be realized, the working stability and reliability of the tab piercing device can be effectively improved, the assembly difficulty of the battery can be effectively reduced, and the assembly efficiency and yield rate of the battery can be effectively improved.

[0068] 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 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 computer, a laptop computer, an electric toy, an electric tool, a battery car, an electric vehicle, a ship, a spacecraft, etc. Among them, the electric toy can include a fixed or mobile electric toy, for example, a game console, an electric vehicle toy, an electric ship toy, an electric plane toy, etc., and the spacecraft can include an airplane, a rocket, a space shuttle, a spaceship, etc.

[0069] For the convenience of description in the following embodiments, a vehicle 1000a, which is an electrical device according to an embodiment of the present application, is taken as an example for description.

[0070] 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, an extended-range vehicle, etc. A power supply battery 100a is disposed inside the vehicle 1000a, and the power supply battery 100a can be disposed at the bottom, head, or tail of the vehicle 1000a. The power supply battery 100a can be used to supply power to the vehicle 1000a. For example, the power supply battery 100a can serve as the operating power source of the vehicle 1000a. The vehicle 1000a may further include a controller 200a and a motor 300a. The controller 200a is used to control the power supply battery 100a to supply power to the motor 300a. For example, it is used for the working power requirements during the start, navigation, and driving of the vehicle 1000a.

[0071] In some embodiments of the present application, the power supply battery 100a can not only serve as the operating power source of the vehicle 1000a, but also serve as the driving power source of the vehicle 1000a, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000a.

[0072] 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.

[0073] 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.

[0074] 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.

[0075] 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.

[0076] 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.

[0077] In some embodiments, please refer to Figure 2 , the power supply battery 100a can be a battery pack, and the battery pack includes a box body 10a and the battery 1. The battery 1 or the battery module is accommodated in the box body 10a.

[0078] In some embodiments, the box body 10a can be part of the chassis structure of the vehicle 1000a. For example, part of the box body 10a can form at least part of the floor of the vehicle 1000a, or part of the box body 10a can form at least part of the cross beams and longitudinal beams of the vehicle 1000a.

[0079] 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 can 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 can be a hollow structure with one end open, and the first part 11a can be a plate-like structure. The first part 11a covers the open side of the second part 12a so that the first part 11a and the second part 12a jointly define an accommodation space; the first part 11a and the second part 12a can also both be hollow structures with one side open, and the open side of the first part 11a covers the open side of the second part 12a. Of course, the box body 10a formed by the first part 11a and the second part 12a can be of various shapes, such as a cylinder, a cuboid, etc.

[0080] In the power supply battery 100a, there can be multiple batteries 1. The multiple batteries 1 can be connected in series, parallel, or in a combined series-parallel connection. A combined series-parallel 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, parallel, or in a combined series-parallel 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 in the form that multiple batteries 1 are first connected in series, parallel, or in a combined series-parallel connection to form battery modules, and then the multiple battery modules are connected in series, parallel, or in a combined series-parallel connection to form a whole and are accommodated in the box body 10a. The power supply battery 100a can also include other structures. For example, the power supply battery 100a can also include a busbar component for realizing the electrical connection between the multiple batteries 1.

[0081] 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.

[0082] 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.

[0083] 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.

[0084] The housing 10 is a component used to cooperate 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 can be independent components. An open end 12 can 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 can also be integrated. Specifically, the bottom cover 30 and the housing 10 can 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 can have various shapes and sizes, such as rectangular parallelepiped shape, cylindrical shape, hexagonal prism shape, etc. Specifically, the shape of the housing 10 can be determined according to the specific shape and size of the electrode assembly 20. The material of the housing 10 can be 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 can 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 can also be provided on the housing 10.

[0085] The electrode assembly 20 is a component in the battery 1 where an electrochemical reaction occurs. The housing 10 can contain one or more electrode assemblies 20.

[0086] In some embodiments, the electrode assembly 20 includes a positive electrode, a negative electrode, and a separator. During the charging and discharging process of the battery, 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 prevent short circuit between the positive and negative electrodes and at the same time allow the active ions to pass through.

[0087] 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.

[0088] 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.

[0089] As an example, the positive electrode current collector may be a metal foil or a composite current collector. For example, as the metal foil, aluminum or stainless steel with a silver surface treatment, stainless steel, copper, aluminum, nickel, carbon electrode, carbon, nickel, or titanium, etc. may be used. The composite current collector may include a polymer material substrate 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.).

[0090] As an example, the positive electrode active material may include at least one of the following materials: lithium-containing phosphates, lithium transition metal oxides, and their respective modified compounds. However, the present application is not limited to these materials, and other conventional materials that can be used as 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 lithium-containing phosphates 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 lithium transition metal oxides 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.

[0091] In some embodiments, the negative electrode can be a negative electrode sheet, and the negative electrode sheet can include a negative electrode current collector.

[0092] 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 base 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.).

[0093] As an example, the negative electrode sheet can include a negative electrode current collector and a negative electrode active material disposed on at least one surface of the negative electrode current collector.

[0094] 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 disposed on any one or both of the two opposite surfaces of the negative electrode current collector.

[0095] 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 battery negative electrode active materials can also be used. These negative electrode active materials can be used alone or in combination of two or more.

[0096] In some embodiments, the material of the positive current collector can be aluminum, and the material of the negative current collector can be copper.

[0097] In some embodiments, the electrode assembly 20 further includes a separator disposed between the positive electrode and the negative electrode.

[0098] In some embodiments, the separator is a separator membrane. The present application does not particularly limit the type of the separator membrane, and any well-known porous structure separator membrane with good chemical stability and mechanical stability can be selected.

[0099] 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 single component located between the positive and negative electrodes, or can be attached to the surfaces of the positive and negative electrodes.

[0100] 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.

[0101] In some embodiments, the battery 1 further includes an electrolyte, and the electrolyte 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-like, or solid.

[0102] Among them, the liquid electrolyte includes an electrolyte salt and a solvent.

[0103] 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.

[0104] 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.

[0105] Among them, the gel electrolyte includes a polymer as the skeleton network of the electrolyte, combined with an ionic liquid-lithium salt.

[0106] Among them, the solid electrolyte includes a polymer solid electrolyte, an inorganic solid electrolyte, and a composite solid electrolyte.

[0107] 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.

[0108] 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.

[0109] As an example, the composite solid electrolyte is formed by adding an inorganic solid electrolyte filler to the polymer solid electrolyte.

[0110] In some embodiments, the electrode assembly 20 is a wound structure. The positive electrode sheet and the negative electrode sheet are wound into a wound structure.

[0111] In some embodiments, the electrode assembly 20 is provided with pole ears 21, and the pole ears 21 can lead the current out of the electrode assembly 20. The pole ears 21 include a positive pole ear and a negative pole ear. The positive pole ear and the negative pole ear 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 active material and the negative active material react with the electrolyte, and the pole ears 21 are connected to the electrode terminals to form a current loop.

[0112] According to some embodiments of the present application, such as Figure 3As shown, the battery 1 may include a housing 10 and an electrode assembly 20. The housing 10 has a receiving cavity 11. An open end 12 communicating with the receiving cavity 11 is formed on the housing 10. The housing 10 further has a top 13 disposed opposite to the open end 12. A through hole 14 communicating the receiving cavity 11 and the outside may be formed in the top 13. One end of the electrode assembly 20 may be provided with a tab 21. The housing 10 is used to be sleeved onto the electrode assembly 20 along a preset assembly direction F1 through the open end 12, so that the electrode assembly 20 is received in the receiving cavity 11 and the tab 21 extends out of the receiving cavity 11 through the through hole 14.

[0113] Optionally, as Figure 3 shown, the housing 10 may include a terminal post 15. The terminal post 15 may be disposed on the top 13 of the housing 10, and the through hole 14 may be formed in the terminal post 15. Wherein, the active material coating portion of the electrode assembly 20 is disposed inside the housing 10. The tab 21 of the electrode assembly 20 may pass through the through hole 14 and be connected to the side of the terminal post 15 facing away from the receiving cavity 11, so as to output the electric energy inside the electrode assembly 20 to the outside of the battery 1. The housing 10 may be sleeved onto the electrode assembly 20 through the open end 12 to receive the electrode assembly 20.

[0114] Optionally, as Figure 3 shown, the battery 1 may further include a bottom cover 30. The bottom cover 30 is used to cover the open end 12, so that it is not easy for the electrode assembly 20 to fall out of the open end 12 after being put into the housing.

[0115] According to some embodiments of the present application, optionally, as Figure 4 shown, the assembling device 3 includes a housing inserting device 40 and a tab threading device 2. The housing inserting device 40 is used to insert the electrode assembly 20 into the housing 10 from the open end 12 of the housing 10. The housing inserting device 40 includes a housing fixing mechanism 41 and a carrying component 42. The housing fixing mechanism 41 is used to fix the housing 10. The carrying component 42 is located below the housing fixing mechanism 41 and the tab threading device 2 in the preset assembly direction F1, and is used to carry the electrode assembly 20.

[0116] Optionally, the electrode assembly 20 and the bottom cover 30 may be stacked on the carrying component 42 in sequence according to the preset assembly direction F1, so that after the electrode assembly 20 is put into the housing, the bottom cover 30 can cover the open end 12. The carrying component 42 may also further fix the electrode assembly 20 and the bottom cover 30 to reduce the displacement of the electrode assembly 20 during transportation or housing insertion.

[0117] Among them, the housing fixing mechanism 41 and the pole ear threading device 2 are arranged to be movable relative to the carrier assembly 42 along a preset assembly direction F1 to correspondingly move away from or close to the carrier assembly 42. The pole ear threading device 2 includes a guide member 100 for contacting and guiding the pole ear portion 21. The first end 201 of the guide member 100 is used to connect to the pole ear threading device 2, and the second end 202 of the guide member 100 is used to pass through the through hole 14 to guide the pole ear portion 21. Specifically, before contacting the pole ear portion 21, the guide member 100 is arranged such that its second end 202 can pass through the through hole 14 and extend into the accommodation cavity 11. During the descending process of the housing fixing mechanism 41, the housing 10 is sleeved onto the electrode assembly 20. During the process of sleeving the housing 10 onto the electrode assembly 20, the guide member 100 contacts the pole ear portion 21 in the accommodation cavity 11, so that the pole ear portion 21 overlaps on the guide member 100 to guide the pole ear portion 21 to penetrate into the through hole 14.

[0118] Furthermore, the process of sleeving the housing 10 onto the electrode assembly 20 includes a first stage and a second stage arranged in sequence. In the first stage, the housing fixing mechanism 41 and the pole ear threading device 2 are arranged to be able to descend together relative to the carrier assembly 42 along the preset assembly direction F1, so that the pole ear threading device 2 can contact the pole ear portion 21 in the accommodation cavity 11. In the second stage, the housing fixing mechanism 41 is arranged to be able to descend relative to the pole ear threading device 2 along the preset assembly direction F1, so that the pole ear threading device 2 guides the pole ear portion 21 to penetrate into the through hole 14. Before the first stage, the pole ear threading device 2 is arranged to be able to descend relative to the housing fixing mechanism 41 along the preset assembly direction F1, and penetrate into the accommodation cavity 11 from one side of the top 13 through the through hole 14, and descend together with the housing fixing mechanism 41 relative to the carrier assembly 42 in the first stage.

[0119] By the above method, when the housing 10 of the battery 1 is sleeved onto the electrode assembly 20, the pole ear portion 21 of the battery 1 can be smoothly guided to penetrate into the through hole 14, so that the pole ear portion 21 is not likely to block the sleeving of the housing 10 onto the electrode assembly 20, and the pole ear portion 21 is not likely to collide with the housing 10 to cause damage or failure to smoothly penetrate into the through hole 14. Furthermore, the accurate insertion of the electrode assembly 20 into the housing can be realized, the working stability and reliability of the pole ear threading device 2 can be effectively improved, the assembly difficulty of the battery 1 can be effectively reduced, and the assembly efficiency and the qualified product rate of the battery 1 can be effectively improved.

[0120] Optionally, as Figure 5 shown, in some embodiments, the assembly device 3 includes a pole ear welding device 50, a pole column welding device 60, and a bottom cover welding device 70. Among them, the pole ear welding device 50 is used to weld a plurality of pole ear pieces of the electrode assembly 20 to form the pole ear portion 21; the pole column welding device 60 is used to weld the pole ear portion 21 passing through the through hole 14 to the side of the pole column 15 of the housing 10 facing away from the accommodation cavity 11; the bottom cover welding device 70 is used to weld the bottom cover 30 to the open end 12 of the housing 10.

[0121] 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.

[0122] 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.

[0123] 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.

[0124] 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.

[0125] According to some embodiments of the present application, Figure 6 As shown, the tab piercing device 2 includes a guide member 100 and a support mechanism 200. The guide member 100 is used to penetrate into the through hole 14. The support mechanism 200 is connected to the guide member 100 and is used to fix the first end 201 of the guide member 100.

[0126] Before contacting the ear part 21 of the contact electrode, the guiding member 100 is arranged such that its second end 202 can pass through the through hole 14 and extend into the accommodation cavity 11. During the process of sleeving the housing 10 onto the electrode assembly 20, the guiding member 100 is used to extend into the accommodation cavity 11 and contact the ear part 21 of the electrode, so that the ear part 21 of the electrode is lapped on the guiding member 100 to guide the ear part 21 of the electrode to extend out of the accommodation cavity 11 through the through hole 14.

[0127] By the above method, by arranging the guiding member 100 that can extend into the accommodation cavity 11 to guide the ear part 21 of the electrode, it can be realized that during the assembly process of the battery 1, when the housing 10 is sleeved onto the electrode assembly 20 along the preset assembly direction F1 through the open end 12, the ear part 21 of the electrode can be lapped on the guiding member 100. Without affecting and damaging the housing 10 and the ear part 21 of the electrode, the ear part 21 of the electrode can be guided to smoothly penetrate into the through hole 14, so that the ear part 21 of the electrode can smoothly extend out of the housing 10, thereby making it difficult for the ear part 21 of the electrode to block the housing 10 from being sleeved onto the electrode assembly 20, and it is also difficult for the ear part 21 of the electrode to collide with the housing 10 and cause damage or fail to smoothly penetrate into the through hole 14. Furthermore, the accurate insertion of the electrode assembly 20 into the housing can be realized, effectively improving the working stability and reliability of the ear-piercing device 2, effectively reducing the assembly difficulty of the battery 1, and effectively improving the assembly efficiency and the qualified product rate of the battery 1.

[0128] According to some embodiments of the present application, optionally, as Figures 7 to 9 shown, the support mechanism 200 is arranged to drive the guiding member 100 to deflect, so that the extending direction F2 of the guiding member 100 forms an angle with the preset assembly direction F1, so as to obliquely guide the ear part 21 of the electrode to penetrate into the through hole 14.

[0129] Optionally, before entering the through hole 14, the extending direction F2 of the guiding member 100 can be consistent with the preset assembly direction F1, and when it is necessary for the guiding member 100 to enter the through hole 14 to guide the ear part 21 of the electrode, the support mechanism 200 drives the guiding member 100 to deflect so that its extending direction F2 forms an angle with the preset assembly direction F1.

[0130] By setting the extending direction F2 of the guiding member 100 to form an angle with the preset assembly direction F1, it is realized that the guiding member 100 uses a reasonable inclination angle to guide the ear part 21 of the electrode, which is convenient for the guiding member 100 to provide a relatively gentle guidance to the ear part 21 of the electrode, and the inclined guiding member 100 can be misaligned with the ear part 21 of the electrode when entering the through hole 14, reducing the possibility of damage caused by collision between the guiding member 100 and the ear part 21 of the electrode. Thus, the ear part 21 of the electrode can be guided to penetrate into the through hole 14 without damaging the ear part 21 of the electrode, and it is not easy to occur that the ear part 21 of the electrode is bent or stuck and cannot penetrate out, effectively improving the working stability and reliability of the ear-piercing device 2.

[0131] According to some embodiments of the present application, optionally, asFigure 9 As shown, an included angle is provided between the extending direction F2 of the guiding member 100 and the extending direction F3 of the tab 21, and the extending direction F3 of the tab 21 is provided to form an included angle with the preset assembling direction F1.

[0132] By providing an included angle between the extending direction F2 of the guiding member 100 and the extending direction F3 of the tab 21, and setting the extending direction F3 of the tab 21 to form an included angle with the preset assembling direction F1, it is beneficial to realize the guiding of the tab 21 by the guiding member 100, effectively avoid the tab 21 from colliding with the housing 10 and causing bending or damage, effectively reduce the assembling difficulty of the battery 1, and effectively improve the assembling efficiency and the qualified rate of the battery 1.

[0133] According to some embodiments of the present application, optionally, as Figure 9 shown, the tab 21 has a first side surface 101 and a second side surface 102 facing away from each other. The tab 21 is inclined towards the side where the first side surface 101 is located with respect to the preset assembling direction F1. The second end 202 of the guiding member 100 is inclined towards the side where the first side surface 101 is located with respect to the first end 201, and contacts the tab 21 on the side where the first side surface 101 is located.

[0134] The tab 21 is inclined towards the side where the first side surface 101 is located with respect to the preset assembling direction F1. By setting the second end 202 of the guiding member 100 to be inclined towards the side where the first side surface 101 is located with respect to the first end 201, a misalignment setting between the guiding member 100 and the tab 21 can be realized, so that the tab 21 can overlap on the surface of the inclined guiding member 100, and further, the guiding of the tab 21 by the guiding member 100 can be realized during the process of inserting the electrode assembly 20 into the housing, effectively reducing the assembling difficulty of the battery 1 and effectively improving the assembling efficiency and the qualified rate of the battery 1.

[0135] According to some embodiments of the present application, optionally, as Figure 9 shown, with the tab 21 as the boundary, the guiding member 100 is set to extend obliquely from the side where the second side surface 102 is located to the first side surface 101, and contacts the tab 21 on the side where the first side surface 101 of the tab 21 is located.

[0136] By setting the guiding member 100 to extend obliquely from the side where the second side surface 102 is located to the first side surface 101, the inclination angle of the guiding member 100 with respect to the tab 21 is made relatively gentle, so as to guide the tab 21 relatively gently, and enable the tab 21 to smoothly overlap on the guiding member 100, effectively avoiding the tab 21 from colliding with the guiding member 100 or the housing 10 and causing bending or damage, effectively reducing the assembling difficulty of the battery 1, and effectively improving the assembling efficiency and the qualified rate of the battery 1.

[0137] According to some embodiments of the present application, optionally, as Figure 10 shown, the support mechanism 200 includes a base 210, a flipping drive motor 220, and a clamping mechanism 230. The clamping mechanism 230 is disposed on the base 210, the flipping drive motor 220 is disposed on the base 210 and is in transmission connection with the clamping mechanism 230. The clamping mechanism 230 clamps the guide member 100, and the flipping drive motor 220 is used to drive the clamping mechanism 230 to rotate, so as to drive the guide member 100 to deflect.

[0138] Optionally, the support mechanism 200 may include a first synchronous pulley 221, a second synchronous pulley 222, and a synchronous belt 223. The first synchronous pulley 221 is driven by the flipping drive motor 220 to rotate, so that the first synchronous pulley 221 drives the second synchronous pulley 222 to rotate through the synchronous belt 223, so as to drive the clamping mechanism 230 to rotate driven by the second synchronous pulley 222.

[0139] In the above manner, by setting the flipping drive motor 220 to drive the clamping mechanism 230 to rotate, so as to drive the guide member 100 to deflect, the inclination angle of the guide member 100 is adjusted, and the guide member 100 penetrates into the through hole 14 at a reasonable inclination angle, so as to gently guide the pole ear portion 21, which is beneficial to improving the working reliability of the pole ear threading device 2.

[0140] According to some embodiments of the present application, optionally, as Figure 10 shown, the clamping mechanism 230 includes a rotating seat 231 and a clamping block 235. The rotating seat 231 includes a connecting portion 232, an extending portion 233, and a limiting portion 234. The connecting portion 232 and the limiting portion 234 are disposed at both ends of the extending portion 233 and extend in the same side direction of the extending portion 233. The extending directions F4 of the limiting portion 234 and the connecting portion 232 are perpendicular to the extending direction F5 of the extending portion 233. The connecting portion 232 is rotatably connected to the base 210. The clamping block 235 is disposed on the same side of the extending portion 233 and is located between the connecting portion 232 and the limiting portion 234. During the process of the housing 10 being sleeved on the electrode assembly 20, a part of the extending portion 233, the clamping block 235, and the limiting portion 234 are oppositely disposed with respect to the top 13 of the housing 10. In the extending direction F4 of the limiting portion 234 and the connecting portion 232, the height of the clamping block 235 is lower than the height of the limiting portion 234, and the clamping block 235 is used to clamp the guide member 100.

[0141] In the above manner, the guiding member 100 is fixed to the clamping mechanism 230 by setting the clamping block 235, and the rotating seat 231 is set to realize the deflection of the guiding member 100, so as to make the guiding member 100 guide the tab 21 in a suitable inclined posture, effectively improving the working stability and reliability of the tab-piercing device 2. In addition, by setting the height of the clamping block 235 to be lower than the height of the limiting portion 234 in the extending direction F4 of the limiting portion 234 and the connecting portion 232, the limiting portion 234 is used to limit the length of the guiding member 100 extending into the accommodating cavity 11, effectively reducing the possibility of damage to the tab 21 or the housing 10 caused by the overlong length of the guiding member 100 extending into the accommodating cavity 11, which is beneficial to improving the working reliability and stability of the tab-piercing device 2.

[0142] According to some embodiments of the present application, optionally, as Figure 9 shown, the guiding member 100 is arranged in a sheet shape, and one main surface of the guiding member 100 is used for the tab 21 to lap.

[0143] In the above manner, by setting the sheet-shaped guiding member 100, a smooth main surface is provided for the tab 21 to be guided, which is beneficial to improving the guiding efficiency and stability of the guiding member 100 for the tab 21, and is beneficial to reducing the assembly difficulty of the battery 1.

[0144] According to some embodiments of the present application, optionally, as Figure 6 shown, the supporting mechanism 200 fixes the first end 201 of the guiding member 100, so that the second end 202 of the guiding member 100 is suspended.

[0145] In the above manner, the first end 201 of the guiding member 100 is fixed by the supporting mechanism 200, and the second end 202 of the guiding member 100 is suspended, so that while the guiding member 100 is fixed, the suspended second end 202 can extend into the accommodating cavity 11 to guide the tab 21. The structure is simple and effective, which is beneficial to improving the guiding efficiency and stability of the guiding member 100 for the tab 21, and is beneficial to reducing the assembly difficulty of the battery 1.

[0146] According to some embodiments of the present application, optionally, as Figures 7 to 9 shown, the process of the housing 10 being sleeved on the electrode assembly 20 includes a first stage. In the first stage, the supporting mechanism 200 is set to be able to move relative to the electrode assembly 20 together with the housing 10, and the guiding member 100 is used to contact the tab 21 in the first stage and allow the tab 21 to slide on the guiding member 100, so that the tab 21 laps on the guiding member 100.

[0147] By moving the support mechanism 200 and the housing 10 relative to the electrode assembly 20 in the first stage, the guide member 100 is inserted into the through hole 14 and contacts the tab portion 21, so that the tab portion 21 is lapped on the guide member 100 and slides along the guide member 100, guiding the tab portion 21 into a posture convenient for extending out of the through hole 14, which can smoothly and efficiently guide the tab portion 21 and effectively improve the guiding efficiency of the tab-piercing device 2 and the assembly efficiency of the battery 1.

[0148] According to some embodiments of the present application, optionally, as Figure 9 shown, 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 support mechanism 200 is configured to be able to move relative to the housing 10 in a direction away from each other, so that the guide member 100 and the housing 10 move away from each other. In the second stage, the guide member 100 is configured to remain in contact with and relatively stationary with respect to the tab portion 21, and then guide the tab portion 21 to penetrate into the through hole 14 during the relative movement of the housing 10 away from each other.

[0149] In the above manner, by moving the support mechanism 200 and the guide member 100 relative to the housing 10 in a direction away from each other in the second stage, and the guide member 100 remains in contact with and relatively stationary with respect to the tab portion 21, the tab portion 21 can be guided to penetrate into the through hole 14 while the electrode assembly 20 is further inserted into the housing, and the assembly process is smooth and clear, effectively improving the efficiency of the tab portion 21 penetrating into the through hole 14 and the assembly efficiency of the battery 1.

[0150] According to some embodiments of the present application, as Figure 11 shown, the assembly method of the battery 1 of the present application may include the following steps.

[0151] S100: Control the guide member to penetrate into the accommodation cavity through the through hole, and control the housing to be sleeved onto the electrode assembly.

[0152] Control the support mechanism 200 to drive the guide member 100 to deflect, so that the extension direction F2 of the guide member 100 forms an angle with the preset assembly direction F1, and then control the support mechanism 200 to make the guide member 100 penetrate into the accommodation cavity 11 through the through hole 14 in the deflected state, and then control the guide member 100 and the housing 10 to descend along the preset assembly direction F1 to approach the electrode assembly 20, so that the tab portion 21 is smoothly lapped on the guide member 100, and the housing 10 is gradually sleeved onto the electrode assembly 20.

[0153] In the above manner, it is possible to smoothly insert the guiding member 100 into the receiving cavity 11 while providing conditions for guiding the pole ear portion 21 subsequently. The extending direction F2 of the guiding member 100 is set at an angle with the preset assembling direction F1, which can provide a relatively gentle guiding trajectory for the pole ear portion 21, so that the pole ear portion 21 is not easily bent or deformed, which is beneficial to improving the reliability of the assembly and can improve the efficiency of inserting the electrode assembly 20 into the housing.

[0154] S200: During the process of sleeving the housing on the electrode assembly, control the guiding member to contact the pole ear portion so that the pole ear portion overlaps on the guiding member to guide the pole ear portion to extend out of the receiving cavity through the through hole.

[0155] The process of sleeving the housing 10 on the electrode assembly 20 includes a first stage and a second stage arranged in sequence. In the first stage, control the support mechanism 200 and the housing 10 to move relative to the electrode assembly 20 together, so as to drive the guiding member 100 to contact the pole ear portion 21 in the first stage, so that the pole ear portion 21 overlaps on the guiding member 100. In the second stage, control the support mechanism 200 and the housing 10 to move relatively in a direction away from each other, so that the guiding member 100 and the housing 10 are away from each other, and control the support mechanism 200 to keep the guiding member 100 in contact with the pole ear portion 21 and relatively stationary, and then guide the pole ear portion 21 to penetrate into the through hole 14 during the process of the housing 10 moving relatively away.

[0156] By moving the support mechanism 200 and the housing 10 relative to the electrode assembly 20 together in the first stage, it is possible to achieve the contact between the guiding member 100 and the pole ear portion 21 while the electrode assembly 20 is gradually inserted into the housing. In the second stage, the support mechanism 200 and the housing 10 move relatively in a direction away from each other and keep the guiding member 100 in contact with the pole ear portion 21, which can guide the pole ear portion 21 to penetrate into 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 portion 21 penetrating into the through hole 14 and the assembly efficiency of the battery 1. By smoothly guiding the pole ear portion 21 to penetrate into the through hole 14, the pole ear portion 21 is not easily blocked when the housing 10 is sleeved on the electrode assembly 20, and the pole ear portion 21 is not easily collided with the housing 10 to cause damage or failure to penetrate into the through hole 14 smoothly. Furthermore, the accurate insertion of the electrode assembly 20 into the housing is realized, and while the housing 10 is sleeved on the electrode assembly 20, the pole ear portion 21 is guided to penetrate into the through hole 14, 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 of the battery 1.

[0157] According to some embodiments of the present application, optionally, as Figures 3 to 10As shown, the battery 1 includes a shell 10 and an electrode assembly 20; the shell 10 has a receiving cavity 11, and a through hole 14 is opened on the shell 10 to connect the receiving cavity 11 and the outside, the electrode assembly 20 is arranged in the receiving cavity 11, and 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 guide member 100 and a support mechanism 200, the guide member 100 is used to penetrate the through hole 14, and the support mechanism 200 is connected to the guide member 100 and is used to fix the first end 201 of the guide member 100. Among them, the guide member 100 is used to extend into the receiving cavity 11 and guide the pole ear portion 21 to extend out of the receiving cavity 11 through the through hole 14. The support mechanism 200 is configured to drive the guide member 100 to deflect, so that the extension direction F2 of the guide member 100 is set at an angle with the preset assembly direction F1, so as to obliquely guide the pole ear portion 21 to extend out of the receiving cavity 11 through the through hole 14. The extension direction F2 of the guide member 100 is set at an angle to the extension direction F3 of the pole ear portion 21, and the extension direction F3 of the pole ear portion 21 is set to be set at an angle to the preset assembly direction F1. The pole ear portion 21 has a first side surface 101 and a second side surface 102 opposite to each other, and the pole ear portion 21 is inclined toward the side where the first side surface 101 is located relative to the preset assembly direction F1; the second end 202 of the guide member 100 is inclined toward the side where the first side surface 101 is located relative to the first end 201, and contacts the pole ear portion 21 on the side where the first side surface 101 is located. With the pole ear portion 21 as the boundary, the guide member 100 is set to extend obliquely from the side where the second side surface 102 is located to the first side surface 101, and contacts the pole ear portion 21 on the side where the first side surface 101 of the pole ear portion 21 is located. The supporting mechanism 200 includes a base 210, a flip driving motor 220 and a clamping mechanism 230. The clamping mechanism 230 is arranged on the base 210. The flip driving motor 220 is arranged on the base 210 and is in transmission connection with the clamping mechanism 230. The clamping mechanism 230 clamps the guide member 100. The flip driving motor 220 is used to drive the clamping mechanism 230 to rotate so as to drive the guide member 100 to deflect. The clamping mechanism 230 includes a rotating seat 231 and a clamping block 235. The rotating seat 231 includes a connecting portion 232, an extending portion 233 and a limiting portion 234. The connecting portion 232 and the limiting portion 234 are arranged at both ends of the extending portion 233 and extend in the same side direction of the extending portion 233. The extending direction F4 of the limiting portion 234 and the connecting portion 232 is perpendicular to the extending direction F5 of the extending portion 233. The connecting portion 232 is rotatably connected to the base 210, and the clamping block 235 is disposed on the same side of the extension portion 233 and between the connecting portion 232 and the limiting portion 234. When the housing 10 is inserted into the electrode assembly 20, the portion of the extension portion 233, the clamping block 235 and the limiting portion 234 are disposed opposite to the top 13 of the housing 10. In the extending direction F4 of the limiting portion 234 and the connecting portion 232, the height of the clamping block 235 is lower than the height of the limiting portion 234, and the clamping block 235 is used to clamp the guide member 100.The guiding member 100 is arranged in a sheet shape, and one main surface of the guiding member 100 is for the tab 21 of the electrode to lap. The supporting mechanism 200 fixes the first end 201 of the guiding member 100, so that the second end 202 of the guiding member 100 is suspended. The process of the housing 10 being sleeved on the electrode assembly 20 includes a first stage. In the first stage, the supporting mechanism 200 is arranged to be able to move relative to the electrode assembly 20 together with the housing 10, and the guiding member 100 is used to contact the tab 21 in the first stage and allow the tab 21 to slide on the guiding member 100, so that the tab 21 laps on the guiding member 100. The process of the housing 10 being sleeved on the electrode assembly 20 includes a second stage after the first stage. In the second stage, the supporting mechanism 200 is arranged to be able to move relative to the housing 10 in a direction away from each other, so that the guiding member 100 and the housing 10 move away from each other. In the second stage, the guiding member 100 is arranged to keep in contact with and relatively stationary with the tab 21, and thus guide the tab 21 to extend out of the accommodation cavity 11 through the through hole 14 during the relative movement away of the housing 10.

[0158] According to some embodiments of the present application, as Figure 4 shown, the assembling device 3 includes the above-mentioned tab-passing device 2. With such an arrangement, the tab 21 of the electrode can extend out of the housing 10 smoothly, which can effectively reduce the assembly difficulty of the battery 1 and effectively improve the assembly efficiency of the battery 1.

[0159] In summary, the embodiments of the present application can enable the tab 21 of the electrode to extend out of the housing 10 smoothly, which can effectively reduce the assembly difficulty of the battery 1 and effectively improve the assembly efficiency of the battery 1.

[0160] It should be noted later that: the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the 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 within 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 device for passing through the tab of a battery, characterized in that, the battery includes a housing and an electrode assembly; the housing has a receiving cavity, a through hole communicating the receiving cavity with the outside is formed on the housing, the electrode assembly is disposed in the receiving cavity, and the device for passing through the tab is used to guide the tab of the electrode assembly to extend out from the through hole; the device for passing through the tab includes: a guiding member for passing through the through hole; a supporting mechanism connected to the guiding member for fixing the first end of the guiding member; wherein, the guiding member is used to extend into the receiving cavity and guide the tab to extend out of the receiving cavity through the through hole.

2. The device for passing through the tab according to claim 1, characterized in that, the supporting mechanism is configured to drive the guiding member to deflect, so that the extending direction of the guiding member forms an angle with the preset assembly direction, and the tab is inclined to be guided to extend out of the receiving cavity through the through hole.

3. The device for passing through the tab according to claim 2, characterized in that, an angle is formed between the extending direction of the guiding member and the extending direction of the tab; the extending direction of the tab is set to form an angle with the preset assembly direction.

4. The device for passing through the tab according to claim 3, characterized in that, the tab has a first side surface and a second side surface facing away from each other, the tab is inclined towards the side where the first side surface is located relative to the preset assembly direction; the second end of the guiding member is inclined towards the side where the first side surface is located relative to the first end and contacts the tab on the side where the first side surface is located.

5. The device for passing through the tab according to claim 4, characterized in that, taking the tab as a boundary, the guiding member is configured to extend obliquely from the side where the second side surface is located to the first side surface and contact the tab on the side where the first side surface of the tab is located.

6. The device for passing through the tab according to claim 2, characterized in that, the supporting mechanism includes a base, a flipping drive motor and a clamping mechanism, the clamping mechanism is disposed on the base, the flipping drive motor is disposed on the base and is in transmission connection with the clamping mechanism; the clamping mechanism clamps the guiding member, and the flipping drive motor is used to drive the clamping mechanism to rotate so as to drive the guiding member to deflect.

7. The device for passing through the tab according to claim 6, characterized in that, The clamping mechanism includes a rotating seat and a clamping block. The rotating seat includes a connecting portion, an extending portion, and a limiting portion. The connecting portion and the limiting portion are disposed at two ends of the extending portion and extend in the same side direction of the extending portion, and the extending directions of the limiting portion and the connecting portion are perpendicular to the extending direction of the extending portion. The connecting portion is rotatably connected to the base. The clamping block is disposed on the same side of the extending portion and is located between the connecting portion and the limiting portion. During the process of the housing being sleeved onto the electrode assembly, a part of the extending portion, the clamping block, and the limiting portion are oppositely disposed with respect to the top of the housing. In the extending directions of the limiting portion and the connecting portion, the height of the clamping block is lower than the height of the limiting portion. The clamping block is used for clamping the guiding member.

8. The ear-piercing device according to any one of claims 1 to 7, characterized in that the guiding member is arranged in a sheet shape, and one main surface of the guiding member is for the ear portion of the electrode to be lapped thereon.

9. The ear-piercing device according to any one of claims 1 to 7, characterized in that the supporting mechanism fixes the first end of the guiding member, so that the second end of the guiding member is suspended.

10. The ear-piercing device according to any one of claims 1 to 7, characterized in that the process of the housing being sleeved onto the electrode assembly includes a first stage. In the first stage, the supporting mechanism is arranged to be able to move relative to the electrode assembly together with the housing. The guiding member is used for contacting the ear portion of the electrode and allowing the ear portion of the electrode to slide on the guiding member in the first stage, so that the ear portion of the electrode is lapped on the guiding member.

11. The ear-piercing device according to claim 10, characterized in that the process of the housing being sleeved onto the electrode assembly includes a second stage after the first stage. In the second stage, the supporting mechanism is arranged to be able to move relative to the housing in a direction away from each other, so that the guiding member and the housing move away from each other; in the second stage, the guiding member is arranged to remain in contact with and relatively stationary with respect to the ear portion of the electrode, and thus guide the ear portion of the electrode to extend out of the accommodating cavity through the through hole during the process of the housing moving relatively away.

12. An assembly device for a battery, characterized in that it includes: a housing inserting device and the ear-piercing device according to any one of claims 1 - 11. The housing inserting device is used for inserting the electrode assembly into the housing from the open end of the housing. The housing inserting device includes a housing fixing mechanism and a carrying component. The housing fixing mechanism is used for fixing the housing, and the carrying component is used for carrying the electrode assembly. Among them, the shell fixing mechanism and the pole ear device can move relative to the bearing assembly to correspondingly move away from or close to the bearing assembly; the guide member is configured so that its second end can pass through the through hole and extend into the accommodating cavity; the shell fixing mechanism is used to insert the shell into the electrode assembly; the guide member is used to contact the pole ear portion in the accommodating cavity, so that the pole ear portion overlaps the guide member to guide the pole ear portion to pass through the through hole and extend out of the accommodating cavity.

13. The assembly device according to claim 12, It is characterized in that The assembly equipment includes a pole ear welding device, a pole column welding device and a bottom cover welding device; wherein the pole ear welding device is used to weld multiple pole ear sheets of the electrode assembly to form the pole ear portion; the pole column welding device is used to weld the pole ear portion passing through the through hole to the side of the pole of the shell away from the accommodating cavity; the bottom cover welding device is used to weld the bottom cover to the open end of the shell.

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

15. The assembly method according to claim 14, It is characterized in that The step of controlling the guide member to contact the pole ear portion so that the pole ear portion overlaps the guide member includes: In the first stage, the support mechanism is controlled to move together with the shell relative to the electrode assembly, so as to drive the guide member to contact the pole ear portion in the first stage, so that the pole ear portion overlaps the guide member; In the second stage, the support mechanism and the shell are controlled to move relative to each other in a direction away from each other, so that the guide member and the shell move away from each other, and the support mechanism is controlled so that the guide member and the pole ear portion remain in contact and relatively still, thereby guiding the pole ear portion to pass through the through hole and extend out of the accommodating cavity during the process of the shell moving away from each other.

16. The assembly method according to claim 14, It is characterized in that The step of controlling the guide member to pass through the through hole into the accommodating cavity comprises: Controlling the support mechanism to drive the guide member to deflect, so that the extension direction of the guide member is set at an angle to the preset assembly direction; The supporting mechanism is controlled so that the guide member penetrates into the accommodating cavity through the through hole in a deflected state.

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