Winding equipment and winding method of winding equipment

Abstract

The invention is suitable for the technical field of battery manufacturing, and provides winding equipment and a winding method of the winding equipment, and the winding equipment comprises a winding mechanism which is used for winding a base material to form an electrode assembly; the discharging mechanism comprises a first discharging sub-mechanism and a second discharging sub-mechanism. The shaping mechanism comprises a first pressing plate and a second pressing plate, a shaping space is formed between the first pressing plate and the second pressing plate, the shaping space is used for containing the electrode assembly taken down by the discharging mechanism, and the first pressing plate and the second pressing plate are configured to be capable of moving oppositely so as to shape the electrode assembly contained in the shaping space; according to the winding equipment provided by the embodiment of the invention, the first sub-discharging mechanism and the second sub-discharging mechanism are arranged, so that each discharging mechanism can take down the electrode assembly on the winding mechanism and carry out a subsequent shaping treatment process, the time of waiting for discharging of the winding mechanism is shortened, the efficiency of the discharging procedure is improved, and the production efficiency is improved. And the efficiency of the whole processing procedure can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of battery manufacturing, and in particular to a winding device and a winding method of the winding device. Background Art

[0002] Energy conservation and emission reduction are the key to the sustainable development of the automobile industry. Electric vehicles have become an important part of the sustainable development of the automobile industry due to their advantages in energy conservation and environmental protection. For electric vehicles, battery technology is an important factor in their development.

[0003] In the current battery processing process, the wound electrode assembly is usually removed from the winding needle through a feeding device; as the speed of the battery winding process increases, the feeding speed of the feeding device is difficult to adapt to the speed of the battery winding process, resulting in difficulty in improving the overall battery processing efficiency. Summary of the invention

[0004] In view of the above problems, the present application provides a winding device and a winding method for the winding device, which can alleviate the problem that the overall processing efficiency of the battery is difficult to improve due to the low efficiency of the unloading device.

[0005] In a first aspect, an embodiment of the present application provides a winding device, comprising: A winding mechanism for winding a substrate to form an electrode assembly, the winding mechanism comprising a turret and a winding needle disposed on the turret, the turret being configured to drive the winding needle to move to each station, each station including a material unloading station; a material unloading mechanism comprising a first sub-unloading mechanism and a second sub-unloading mechanism, the first sub-unloading mechanism and the second sub-unloading mechanism being configured to simultaneously or alternately remove the electrode assembly from the winding needle at the unloading station; at least one shaping mechanism comprising a first pressing plate and a second pressing plate, a shaping space being formed between the first pressing plate and the second pressing plate, the shaping space being used to accommodate the electrode assembly removed by the material unloading mechanism, the first pressing plate and the second pressing plate being configured to be able to move toward each other to shape the electrode assembly accommodated in the shaping space.

[0006] In the technical solution of this embodiment, a first sub-unloading mechanism and a second sub-unloading mechanism are provided so that each unloading mechanism can remove the electrode assembly on the winding mechanism and perform subsequent shaping processing; in this arrangement, the first sub-unloading mechanism and the second sub-unloading mechanism can take materials simultaneously or alternately, thereby reducing the time the winding mechanism waits for unloading, improving the efficiency of the unloading process, and thus being able to improve the efficiency of the entire processing process.

[0007] In some embodiments, each workstation includes a material unloading workstation, and the first sub-material unloading mechanism and the second sub-material unloading mechanism are configured to alternately remove the electrode assembly from the winding needle of the material unloading workstation.

[0008] In the technical solution of this embodiment, the workstation includes a material unloading station, and the first sub-unloading mechanism and the second sub-unloading mechanism take materials from the material unloading station alternately, which reduces the time the turret waits for unloading and improves the efficiency of the unloading process.

[0009] In some embodiments, each workstation includes a winding station, a finishing station, a gluing station, a material unloading station and a waiting station, and the turret is configured to drive the winding needle to pass through the winding station, the finishing station, the gluing station, the material unloading station and the waiting station in sequence.

[0010] In the technical solution of this embodiment, each workstation corresponds to a different process, so that the winding, finishing, gluing, unloading and other processes of the electrode assembly can be carried out at different positions, thereby reducing the waiting time of the turret at the same position and improving the efficiency of the winding mechanism.

[0011] In some embodiments, each workstation includes two unloading workstations, and the first sub-unloading mechanism and the second sub-unloading mechanism are configured to remove the electrode assembly from the winding needles of different unloading workstations.

[0012] In the technical solution of this embodiment, the workstation includes at least two unloading stations, and the first sub-unloading mechanism and the second sub-unloading mechanism are respectively opposite to different unloading stations, so that the first sub-unloading mechanism and the second sub-unloading mechanism can take materials from the corresponding unloading stations simultaneously or alternately, which can not only increase the number of materials taken and unloaded at a single time, but also reduce the time the turret waits for unloading, thereby improving the efficiency of the unloading process.

[0013] In some embodiments, each workstation includes a winding station, a finishing station, a first unloading station, a second unloading station and a waiting station, and the turret is configured to drive the winding needle to pass through the winding station, the finishing station, the first unloading station, the second unloading station and the waiting station in sequence.

[0014] In the technical solution of this embodiment, the workstation includes two unloading workstations, which are respectively opposite to the first sub-unloading mechanism and the second sub-unloading mechanism, thereby improving the efficiency of the unloading mechanism and the efficiency of the entire unloading process.

[0015] In some embodiments, the winding device includes at least two shaping mechanisms, wherein at least one shaping mechanism is configured to shape the electrode assembly removed by the first sub-feeding mechanism, and at least one shaping mechanism is configured to shape the electrode assembly removed by the second sub-feeding mechanism.

[0016] In the technical solution of this embodiment, the number of shaping mechanisms is set to at least two, and the first sub-unloading mechanism and the second sub-unloading mechanism correspond to different shaping mechanisms respectively, so as to reduce the influence of the shaping time of the shaping mechanism on the unloading process, thereby better improving the efficiency of the unloading process.

[0017] In some embodiments, the first sub-feeding mechanism and the second sub-feeding mechanism both include: a clamping needle assembly for clamping the electrode assembly; and a transport assembly for driving the clamping needle assembly to move back and forth between the winding mechanism and the shaping mechanism.

[0018] The technical solution of this embodiment provides some specific structures of the first sub-unloading mechanism and the second sub-unloading mechanism, so as to drive the clamping needle assembly to move from the winding needle side to the shaping mechanism side through the transfer assembly, so that the unloading mechanism can directly transfer the electrode assembly to the shaping mechanism without transporting the electrode assembly through a conveyor belt.

[0019] In some embodiments, the needle clamping assembly includes a substrate and a needle clamping assembly movably disposed on the substrate; the transport assembly includes a first sub-transport assembly, the substrate is disposed on the first sub-transport assembly, and the first sub-transport assembly is used to drive the needle clamping assembly to move along a first direction to enter or exit the shaping space.

[0020] In the technical solution of this embodiment, the clamping needle assembly includes a clamping needle arranged on a substrate, so that the electrode assembly can be separated from the winding needle through the clamping needle; the transport assembly includes a first sub-transport assembly, so that the clamping needle can be driven to enter or exit the shaping space through the first sub-transport assembly, thereby transporting the electrode assembly to the shaping mechanism.

[0021] In some embodiments, the transfer assembly also includes: a second sub-transfer assembly, used to drive the needle clamping assembly to move along the second direction; a third sub-transfer assembly, used to drive the needle clamping assembly to move along the third direction; wherein the first direction, the second direction and the third direction are perpendicular to each other, and the first sub-transfer assembly, the second sub-transfer assembly and the third sub-transfer assembly are connected in pairs.

[0022] The technical solution of this embodiment provides some specific structures of the transfer component, so that the transfer component includes a second sub-transfer component and a third sub-transfer component with different movement directions, so that the transfer component can drive the clamping needle component to move in different directions, thereby enabling the transfer component to drive the clamping needle component to clamp the electrode assembly and transfer the electrode assembly to the shaping mechanism.

[0023] In some embodiments, the clamping needles include at least two groups of first clamping needles and second clamping needles that are arranged opposite to each other; the clamping needle assembly also includes a clamping needle moving assembly for driving the first clamping needles to approach or move away from the corresponding second clamping needles. In the technical solution of this embodiment, the clamping needle assembly includes a first clamping needle and a second clamping needle, and the first clamping needle can move closer to or away from the second clamping needle to clamp the electrode assembly between the first clamping needle and the second clamping needle, so as to better fix the electrode assembly and reduce the situation where the electrode assembly escapes from the clamping needle assembly; at the same time, the setting of the second clamping needle can also limit the displacement of the first clamping needle, thereby reducing the situation where the electrode assembly is damaged due to excessive force caused by the first clamping needle moving too far.

[0024] In some embodiments, the clamping needle assembly further includes a pressure sensor communicatively connected to the clamping needle moving assembly, and the pressure sensor is used to detect the pressure applied to the electrode assembly when the first clamping needle and the second clamping needle clamp the electrode assembly.

[0025] In the technical solution of this embodiment, a pressure sensor is provided to detect the pressure exerted by the first clamping needle or the second clamping needle on the electrode assembly through the pressure sensor, so that the clamping needle moving assembly controls the action state of the first clamping needle through the pressure detected by the pressure sensor, so as to reduce the situation where the first clamping needle and the second clamping needle excessively clamp the electrode assembly and cause damage to the electrode assembly.

[0026] In some embodiments, the winding needle includes a needle body and at least two material discharge grooves opened on the circumference of the needle body; in the axial direction of the needle body, at least one end of the material discharge groove is connected to the space outside the needle body.

[0027] The technical solution of this embodiment provides some winding needle structures, and a feed slot is provided on the needle body to facilitate the first sub-feeding mechanism and the second sub-feeding mechanism to remove the electrode assembly from the winding needle.

[0028] In some embodiments, the winding device further includes a position detection device disposed on one side of the turret, and the position detection device is configured to detect whether an electrode assembly is present on a winding needle in a material unloading station.

[0029] In the technical solution of this embodiment, a position detection device is provided to detect whether there is an electrode assembly on the winding needle in the unloading station through the position detection device, thereby facilitating the first sub-unloading mechanism and the second sub-unloading mechanism to clamp the electrode assembly from the corresponding unloading station according to the detection signal.

[0030] In some embodiments, the first pressure plate has at least a first position and a second position arranged along the movement direction of the first pressure plate, the distance between the first pressure plate and the second pressure plate when the first pressure plate is in the first position is greater than the distance between the first pressure plate and the second pressure plate when the first pressure plate is in the second position, and the distance between the first pressure plate and the second pressure plate when the first pressure plate is in the first position is less than or equal to the thickness of the electrode assembly.

[0031] In the technical solution of this embodiment, the first pressing plate has at least a first position and a second position. When the first pressing plate is in the first position, the distance between the first pressing plate and the second pressing plate is less than or equal to the thickness of the electrode assembly, so as to limit the deformation of the electrode assembly by the first pressing plate and the second pressing plate, so as to reduce the looseness of the electrode assembly that may occur during the withdrawal of the first clamping needle; at the same time, the first pressing plate and the second pressing plate can also play a role in fixing the electrode assembly, so as to facilitate the withdrawal of the first clamping needle from the electrode assembly, and it is not easy for the electrode assembly to move synchronously with the movement of the first clamping needle.

[0032] In some embodiments, the second pressing plate includes a load-bearing member and a conveyor belt. The load-bearing member is arranged opposite to the first pressing plate to form a shaping space. At least a portion of the conveyor belt extends to the side of the load-bearing member facing the first pressing plate. The conveyor belt is configured to convey the shaped electrode assembly to the next process.

[0033] The embodiments of the present application provide some specific structures of the second pressing plate, and a load-bearing member is provided to cooperate with the first pressing plate to shape the electrode assembly; a conveyor belt is provided to convey the shaped electrode assembly to the next process.

[0034] In a second aspect, an embodiment of the present application further provides a winding method of a winding device, comprising: The substrate is wound by a winding mechanism to obtain an electrode assembly; the electrode assembly is clamped and unloaded by a first sub-unloading mechanism and a second sub-unloading mechanism, and the electrode assembly is transferred to a shaping mechanism; the electrode assembly is shaped by the shaping mechanism to obtain a shaped electrode assembly.

[0035] In the technical solution of this embodiment, a first sub-unloading mechanism and a second sub-unloading mechanism are provided so that each unloading mechanism can remove the electrode assembly on the winding mechanism and perform subsequent shaping processing; in this arrangement, the first sub-unloading mechanism and the second sub-unloading mechanism can take materials simultaneously or alternately, thereby reducing the time the winding mechanism waits for unloading, improving the efficiency of the unloading process, and thus being able to improve the efficiency of the entire processing process.

[0036] In some embodiments, the winding mechanism includes a turret and a winding needle; the step of winding the substrate through the winding mechanism to obtain an electrode assembly includes: rotating the turret and driving the winding needle to move to each workstation, and winding the substrate through the winding needle to obtain an electrode assembly; the step of clamping and unloading the electrode assembly through the first sub-unloading mechanism and the second sub-unloading mechanism includes: clamping and unloading the electrode assembly on the winding needle at the unloading workstation through the first sub-unloading mechanism and the second sub-unloading mechanism, and transferring the electrode assembly to the shaping mechanism.

[0037] In the technical solution of this embodiment, a turret and multiple workstations are provided. The turret can drive the winding needle to move to each workstation, and different processes of the electrode assembly can be carried out at different workstations respectively. This arrangement can reduce the waiting time of the turret at the same position, thereby improving the efficiency of the winding mechanism. The electrode assembly is directly transferred to the shaping mechanism through the unloading mechanism to reduce the risk of the electrode assembly becoming loose or wrinkled during transportation.

[0038] In some embodiments, after the step of transferring the electrode assembly to the shaping mechanism by the first sub-feeding mechanism and the second sub-feeding mechanism, the step further includes: the first sub-feeding mechanism and the second sub-feeding mechanism are separated from the shaping mechanism and reset.

[0039] In the technical solution of this embodiment, the first sub-unloading mechanism and the second sub-unloading mechanism can be reset after being separated from the shaping mechanism, so as to facilitate the reciprocating movement of the first sub-unloading mechanism and the second sub-unloading mechanism between the unloading station and the shaping mechanism.

[0040] In some embodiments, the winding mechanism includes a material unloading station; the step of clamping and unloading the electrode assembly on the winding needle located at the unloading station through the first sub-unloading mechanism and the second sub-unloading mechanism includes: alternately clamping and unloading the electrode assembly on the winding needle located at the unloading station through the first sub-unloading mechanism and the second sub-unloading mechanism, and satisfying: t / 2<T, t is the time taken for the first sub-unloading mechanism and / or the second sub-unloading mechanism to complete the clamping and unloading of the electrode assembly and reset, and T is the total time required for the winding needle to stay in one station and move to the next station.

[0041] In the technical solution of the present embodiment, the winding mechanism includes a material unloading station, and the first sub-unloading mechanism and the second sub-unloading mechanism take materials from the material unloading station alternately, thereby reducing the time the turret waits for unloading and improving the efficiency of the unloading process; the action durations of the first sub-unloading mechanism and the second sub-unloading mechanism are set so that the first sub-unloading mechanism and the second sub-unloading mechanism can take materials from the corresponding material unloading station in time, thereby reducing the negative impact of the first sub-unloading mechanism and the second sub-unloading mechanism on the action cycle of the turret.

[0042] In some embodiments, the winding mechanism includes two unloading stations; the step of clamping and unloading the electrode assembly on the winding needle located at the unloading station through the first sub-unloading mechanism and the second sub-unloading mechanism includes: the electrode assembly on the winding needle located at different unloading stations is clamped and unloaded by the first sub-unloading mechanism and the second sub-unloading mechanism respectively, and satisfies: t<2T, t is the time taken for the first sub-unloading mechanism and / or the second sub-unloading mechanism to complete the clamping and unloading of the electrode assembly and reset, and T is the total time required for the winding needle to stay in one station and move to the next station.

[0043] In the technical solution of the present embodiment, the winding mechanism includes at least two unloading stations, and the first sub-unloading mechanism and the second sub-unloading mechanism are respectively opposite to different unloading stations, so that the first sub-unloading mechanism and the second sub-unloading mechanism can take materials from the winding mechanism simultaneously or alternately, which can not only increase the number of materials unloaded at a single time, but also reduce the time the winding mechanism waits for unloading, thereby improving the efficiency of the unloading process; the action time of the first sub-unloading mechanism and the second sub-unloading mechanism is set, so that the first sub-unloading mechanism and the second sub-unloading mechanism can take materials from the corresponding unloading stations in time, thereby reducing the negative impact of the first sub-unloading mechanism and the second sub-unloading mechanism on the turret action cycle.

[0044] In some embodiments, the step of clamping and cutting the electrode assemblies on the winding needles located at different cutting stations by the first sub-cutting mechanism and the second sub-cutting mechanism respectively includes: clamping and cutting the electrode assemblies on the winding needles located at different cutting stations by the first sub-cutting mechanism and the second sub-cutting mechanism respectively at the same time.

[0045] In the technical solution of this embodiment, the first sub-unloading mechanism and the second sub-unloading mechanism can simultaneously take materials from the corresponding unloading stations, which can not only increase the number of materials unloaded at a single time, but also reduce the time the turret waits for unloading, thereby improving the efficiency of the unloading process.

[0046] In some embodiments, before the step of simultaneously clamping and unloading electrode assemblies on winding needles located at different unloading stations by the first sub-unloading mechanism and the second sub-unloading mechanism, the step includes: detecting whether there is an electrode assembly on the winding needle by a position detection device; when there are electrode assemblies on the winding needles of the two unloading stations, simultaneously clamping and unloading electrode assemblies on the winding needles located at the different unloading stations by the first sub-unloading mechanism and the second sub-unloading mechanism, and transferring the electrode assemblies to the shaping mechanism; when there are unequal electrode assemblies on the winding needles of the two unloading stations, preventing the first sub-unloading mechanism and the second sub-unloading mechanism from entering the corresponding unloading stations.

[0047] In the technical solution of this embodiment, a position detection device is provided to control the action states of the first and second sub-unloading mechanisms through the position detection device, thereby reducing mutual interference among the actions of the first and second sub-unloading mechanisms and the turret.

[0048] In some embodiments, the winding device includes at least two shaping mechanisms; the step of shaping the electrode assembly through the shaping mechanism includes: shaping the electrode assembly removed by the first sub-feeding mechanism through at least one shaping mechanism, and shaping the electrode assembly removed by the second sub-feeding mechanism through at least another shaping mechanism.

[0049] In the technical solution of this embodiment, the number of shaping mechanisms is set to at least two, and the first sub-unloading mechanism and the second sub-unloading mechanism correspond to different shaping mechanisms respectively, so as to reduce the influence of the shaping time of the shaping mechanism on the unloading process, thereby better improving the efficiency of the unloading process.

[0050] In some embodiments, the first sub-feeding mechanism and the second sub-feeding mechanism both include a clamping needle assembly and a transfer assembly; in the step of clamping and unloading the electrode assembly by the first sub-feeding mechanism and the second sub-feeding mechanism, it includes: clamping the electrode assembly on the winding mechanism by the clamping needle assembly; in the step of transferring the electrode assembly to the shaping mechanism by the first sub-feeding mechanism and the second sub-feeding mechanism, it includes: driving the clamping needle assembly to move from the winding mechanism to the shaping mechanism by the transfer assembly.

[0051] In the technical solution of this embodiment, the electrode assembly is clamped from the winding needle by the clamping needle assembly, and the clamping needle assembly is driven by the transfer assembly to move from one side of the winding needle to the side of the shaping mechanism, so that the unloading mechanism can directly transfer the electrode assembly to the shaping mechanism without the need to transport the electrode assembly through a conveyor belt.

[0052] In some embodiments, the clamping needle assembly includes a first clamping needle, a second clamping needle and a clamping needle moving assembly, the transfer assembly includes a first sub-transfer assembly, and the winding mechanism includes a winding needle; the step of clamping the electrode assembly on the winding mechanism by the clamping needle assembly includes: driving the first clamping needle along a first direction into the winding needle feeding trough by the first sub-transfer assembly; driving the first clamping needle to approach the corresponding second clamping needle and hold it against the electrode assembly by the clamping needle moving assembly; driving the clamping needle assembly to move along the first direction by the first sub-transfer assembly to drive the electrode assembly to separate from the winding needle.

[0053] The technical solution of this embodiment provides some steps for the clamping needle assembly to clamp the electrode assembly, so that the clamping needle assembly can clamp the electrode assembly from the winding needle, and the clamping needle assembly can drive the electrode assembly off the winding needle.

[0054] In some embodiments, the transfer assembly also includes a second sub-transfer assembly and a third sub-transfer assembly; the step of driving the needle clamp assembly to move from the winding mechanism to the shaping mechanism through the transfer assembly includes: driving the needle clamp assembly to move along the second direction and the third direction through the second sub-transfer assembly and the third sub-transfer assembly; driving the needle clamp assembly along the first direction into the shaping space of the shaping mechanism through the first sub-transfer assembly.

[0055] In the technical solution of this embodiment, the second sub-transport assembly and the third sub-transport assembly drive the clamping needle assembly to move in different directions, so that the clamping needle assembly can transport the electrode assembly to the shaping mechanism.

[0056] In some embodiments, the step of driving the first clamping needle close to the corresponding second clamping needle through the clamping needle moving assembly includes: obtaining the pressure value applied by the first clamping needle and the second clamping needle to the electrode assembly through the pressure sensor; driving the first clamping needle close to the corresponding second clamping needle through the clamping needle moving assembly until the pressure value obtained by the pressure sensor is greater than or equal to the pressure threshold.

[0057] In the technical solution of this embodiment, the pressure of the first clamping needle or the second clamping needle is detected by a pressure sensor, so that the clamping needle moving assembly controls the action state of the first clamping needle through the pressure value obtained by the pressure sensor, so as to reduce the situation where the first clamping needle and the second clamping needle excessively clamp the electrode assembly and cause damage to the electrode assembly.

[0058] In some embodiments, the step of shaping the electrode assembly by a shaping mechanism to obtain a shaped electrode assembly includes: moving the first pressing plate of the shaping mechanism close to the second pressing plate of the shaping mechanism and moving to a first position to pre-fix the electrode assembly; the first sub-feeding mechanism and / or the second sub-feeding mechanism detach from the electrode assembly and reset; and continuing to move the first pressing plate close to the second pressing plate and moving to a second position to shape the electrode assembly.

[0059] The technical solution of this embodiment provides some steps for the shaping mechanism to shape the electrode assembly, so that the unloading mechanism can be separated from the shaping mechanism during the shaping process to reduce the interference of the unloading mechanism on the shaping mechanism; it can also reduce the risk of the electrode assembly becoming loose and wrinkled during the shaping process, so that the shaping mechanism can better shape the electrode assembly.

[0060] In some embodiments, after the step of shaping the electrode assembly by a shaping mechanism to obtain the shaped electrode assembly, the process includes: conveying the shaped electrode assembly to the next process by a conveyor belt of a second pressing plate.

[0061] In the technical solution of this embodiment, the electrode assembly that has been shaped is conveyed to the next process by a conveyor belt, so that the shaping mechanism can perform the next shaping action.

[0062] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings: Figure 1 A schematic diagram of the structure of a winding device provided in some embodiments of the present application; Figure 2 Schematic diagram of the arrangement structure of each mechanism in the winding device provided in some embodiments of the present application Figure 1 ; Figure 3 Schematic diagram of the arrangement structure of each mechanism in the winding device provided in some embodiments of the present application Figure 2 ; Figure 4 Schematic diagram of the arrangement structure of each mechanism in the winding device provided in some embodiments of the present application Figure 3 ; Figure 5 Schematic diagram of the arrangement structure of each mechanism in the winding device provided in some embodiments of the present application Figure 4 ; Figure 6 Schematic diagram of the arrangement structure of each mechanism in the winding device provided in some embodiments of the present application Figure 5 ; Figure 7 Schematic diagram of the arrangement structure of each mechanism in the winding device provided in some embodiments of the present application Figure 6 ; Figure 8 Schematic diagram of the arrangement structure of each mechanism in the winding device provided in some embodiments of the present application Figure 7 ; Fig. 9 Schematic diagram of the structure of the winding mechanism provided in some embodiments of the present application Figure 1 ; Fig.10 Schematic diagram of the structure of the winding mechanism provided in some embodiments of the present application Figure 2 ; Fig.11 A schematic diagram of the structure of a feeding mechanism and a shaping mechanism provided in some embodiments of the present application; Fig.12 A three-dimensional schematic diagram of a needle clamping assembly provided in some embodiments of the present application; Fig.13 A schematic diagram of the structure after the first clamping needle enters the feeding chute provided in some embodiments of the present application; Fig.14 A schematic diagram of the structure of an electrode assembly provided in some embodiments of the present application during the process of being transferred by a material unloading mechanism; Fig.15 A schematic diagram of the structure when the first pressing plate provided in some embodiments of the present application is located at the first position; Fig.16 A schematic diagram of the structure when the first pressing plate provided in some embodiments of the present application is located in the second position; Fig.17 Schematic diagram of the winding method provided in some embodiments of the present application Figure 1 ; Fig.18 Schematic diagram of the winding method provided in some embodiments of the present application Figure 2 ; Fig.19 Schematic diagram of the winding method provided in some embodiments of the present application Figure 3 ; Fig. 20 Schematic diagram of the winding method provided in some embodiments of the present application Figure 4 ; Fig.21 Schematic diagram of the winding method provided in some embodiments of the present application Figure 5 .

[0064] The meanings of the marks in the figure are: 100. Winding equipment; 10. Winding mechanism; 11. Winding needle; 111. Needle body; 112. Feeding trough; 12. Turret; 13. Winding station; 14. Finishing station; 15. Gluing station; 16. Feeding station; 161. First feeding station; 162. Second feeding station; 17. Waiting station; 20, blanking mechanism; 20a, first sub-blanking mechanism; 20b, second sub-blanking mechanism; 21, clamping needle assembly; 211, substrate; 212, first clamping needle; 213, second clamping needle; 22, transfer assembly; 221, first sub-transfer assembly; 222, second sub-transfer assembly; 223, third sub-transfer assembly; 30. Shaping mechanism; 31. First pressing plate; 32. Second pressing plate; 321. Load-bearing member; 322. Conveyor belt; 33. Frame; 200. Electrode assembly. DETAILED DESCRIPTION

[0065] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0066] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0067] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0068] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0069] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0070] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0071] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0072] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0073] At present, from the perspective of market development, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding.

[0074] A battery usually includes a plurality of battery cells, each of which includes a shell and an electrode assembly. The shell is used to accommodate the electrode assembly. The electrode assembly is a component in the battery cell where an electrochemical reaction occurs. The electrode assembly can be made of a positive electrode sheet, a negative electrode sheet, and a separator using a winding process or a stacking process. For an electrode assembly made using a winding process, during the processing of the electrode assembly, the wound electrode assembly is usually removed from the winding needle by a feeding mechanism. After that, the feeding mechanism needs to transfer the removed electrode assembly to a conveying device, which is used to transport the electrode assembly to a shaping mechanism for shaping. The time required for shaping the electrode assembly is usually relatively fixed and difficult to change. Therefore, the cycle of the feeding mechanism removing the electrode assembly from the winding mechanism is also difficult to change.

[0075] In the current battery processing system, the operation efficiency of the winding mechanism is getting higher and higher, and the winding efficiency of the electrode assembly is also improving. However, since the unloading speed of the unloading mechanism is not easy to change, this leads to the situation that the winding mechanism stops working and waits for the unloading mechanism to unload, making it difficult to improve the overall processing efficiency of the battery.

[0076] Based on the above considerations, in order to alleviate the problem that the overall processing efficiency of the battery is difficult to improve due to the low efficiency of the unloading mechanism, the present application provides a winding device, in which a first sub-unloading mechanism and a second sub-unloading mechanism are arranged on one side of the winding needle, and a shaping mechanism is configured. The first sub-unloading mechanism and the second sub-unloading mechanism can work simultaneously or alternately to remove the electrode assembly on the winding needle, and transfer the electrode assembly to the shaping mechanism for subsequent shaping processing, thereby reducing the time for the winding needle to wait for unloading, improving the efficiency of the unloading process, and thus being able to improve the efficiency of the entire processing process.

[0077] The battery formed by the processing of the embodiment 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, a laptop, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, and the like. Among them, the electric toy can include a fixed or mobile electric toy, for example, a game console, an electric car toy, an electric ship toy, and an electric airplane toy, and the like, and the spacecraft can include an airplane, a rocket, a space shuttle, and a spacecraft, and the like.

[0078] In order to illustrate the technical solution of the present application, a description is given below with reference to specific drawings and embodiments.

[0079] First, refer to Figure 1 , Fig. 9 , Fig.10An embodiment of the present application provides a winding device 100, including a winding mechanism 10, a feeding mechanism 20 and at least one shaping mechanism 30. Among them, the winding mechanism 10 is used to wind the substrate to form the electrode assembly 200. The winding mechanism 10 includes a turret 12 and a winding needle 11 arranged on the turret 12. The turret 12 is configured to drive the winding needle 11 to move to each workstation, and each workstation includes a blanking workstation 16; the blanking mechanism 20 includes a first sub-blanking mechanism 20a and a second sub-blanking mechanism 20b. The first sub-blanking mechanism 20a and the second sub-blanking mechanism 20b are configured to simultaneously or alternately remove the electrode assembly 200 from the winding needle 11 at the blanking workstation 16; the shaping mechanism 30 includes a first pressing plate 31 and a second pressing plate 32. A shaping space is formed between the first pressing plate 31 and the second pressing plate 32. The shaping space is used to accommodate the electrode assembly 200 removed by the blanking mechanism 20. The first pressing plate 31 and the second pressing plate 32 are configured to be able to move toward each other to shape the electrode assembly 200 accommodated in the shaping space.

[0080] The winding mechanism 10 refers to a structure in the winding device 100 for winding a substrate into an electrode assembly 200, wherein the substrate may include a pole sheet and a separator, the pole sheet is divided into a positive pole sheet and a negative pole sheet, and the separator is stacked between the positive pole sheet and the negative pole sheet to insulate and separate the positive pole sheet and the negative pole sheet.

[0081] The winding mechanism 10 may be a part of the winding device 100. The winding mechanism 10 may wind the separator and the electrode sheet into a laminated composite structure. The winding mechanism 10 may also perform finishing processing on the wound composite structure to obtain an electrode assembly 200. The electrode assembly 200 is a wound electrode assembly 200. The wound electrode assembly 200 may be transported to other processes for processing. According to requirements, the shape of the electrode assembly 200 may be cylindrical, rectangular, or other shapes.

[0082] The turret 12 refers to a structure in the winding mechanism 10 that provides a fixed foundation for the winding needle 11 or other structures. The shape of the turret 12 can be circular, prismatic or other shapes; the material of the turret 12 can include metal, plastic or other shapes.

[0083] The winding needle 11 refers to a structure in the winding mechanism 10 for winding the isolation membrane and the electrode sheet; according to the required shape of the electrode assembly 200, the winding needle 11 can be cylindrical to form a cylindrical electrode assembly 200, or the winding needle 11 can be prismatic to form a square electrode assembly 200. It can be understood that the winding needle 11 can also be other shapes.

[0084] The winding needle 11 is disposed on the turret 12 and can rotate relative to the turret 12 to facilitate winding of the composite structure; the number of the winding needles 11 is at least two, that is, the number of the winding needles 11 can be two, or three or more.

[0085] The turret 12 can drive the winding needle 11 to move, and drive the winding needle 11 to move to different stations; wherein the station refers to the position corresponding to each process to be performed during the formation of the electrode assembly 200. The winding needle 11 can move to the corresponding station driven by the turret 12, and different stations can correspond to different equipment to process the winding needle 11 located in the corresponding station and the electrode assembly 200 on the winding needle 11; the number of stations can be two, or three or more.

[0086] The unloading station 16 refers to the station used for unloading among the various stations, and the turret 12 can transport the wound electrode assembly 200 to the unloading station 16; the electrode assembly 200 on the winding needle 11 can be removed in the unloading station 16, and the unloading mechanism 20 can move to the unloading station 16 and remove the wound electrode assembly 200 from the unloading station 16; for example, in the case where the winding mechanism 10 includes two or more winding needles 11, the winding needle 11 can move to the unloading station 16, so that the unloading mechanism 20 can remove the wound electrode assembly 200 from the winding needle 11.

[0087] It can be understood that when one winding needle 11 is located in the unloading station 16, the other winding needle 11 can be located in other positions to facilitate winding, finishing or other processes. This arrangement allows the winding mechanism 10 to still perform winding, finishing or other processes while the unloading mechanism 20 is taking materials, without having to wait for the unloading mechanism 20 to move, thereby improving the winding efficiency.

[0088] The unloading mechanism 20 refers to a mechanism in the winding device 100 for removing the electrode assembly 200 from the winding mechanism 10. The unloading mechanism 20 can remove the electrode assembly 200 on the winding mechanism 10 to facilitate the winding mechanism 10 to continue winding the electrode sheet and the isolation film and form the next electrode assembly 200.

[0089] The unloading mechanism 20 includes a first sub-unloading mechanism 20a and a second sub-unloading mechanism 20b, and the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b are both used to remove the wound electrode assembly 200 from the winding mechanism 10; in addition to the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b, the unloading mechanism 20 can also include a third sub-unloading mechanism, a fourth sub-unloading mechanism or more sub-unloading mechanisms.

[0090] The first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b can simultaneously remove the wound electrode assembly 200 from the winding mechanism 10; the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b can simultaneously remove the same wound electrode assembly 200, and the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b can also respectively remove two different wound electrode assemblies 200.

[0091] The first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b can also alternately remove the wound electrode assembly 200 from the winding mechanism 10; the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b can alternately remove the wound electrode assembly 200 from the same position of the winding mechanism 10, and the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b can also alternately remove the wound electrode assembly 200 from different positions of the winding mechanism 10.

[0092] It can be understood that, when the material unloading mechanism 20 includes more sub-material unloading mechanisms 20 , the multiple sub-material unloading mechanisms can either take materials from the winding mechanism 10 at the same time or take materials from the winding mechanism 10 separately.

[0093] The shaping mechanism 30 refers to a mechanism in the winding device 100 for shaping the wound electrode assembly 200 . The shaping of the electrode assembly 200 refers to a processing procedure in which a certain pressure is provided by the shaping mechanism 30 to shape the electrode assembly 200 .

[0094] After the unloading mechanism 20 removes the electrode assembly 200 from the winding needle 11, the electrode assembly 200 will be transported to the shaping mechanism 30 for shaping processing; during this process, the electrode assembly 200 can be transported by a conveyor belt or other conveying mechanism, or the unloading mechanism 20 can directly transport the electrode assembly 200 to the shaping mechanism 30.

[0095] The number of shaping mechanisms 30 can be one or two or more; when there are two or more shaping mechanisms 30, each shaping mechanism 30 can correspond one-to-one to the first sub-feeding mechanism 20a, the second sub-feeding mechanism 20b or other more sub-feeding mechanisms, that is, each shaping mechanism 30 can perform shaping processing on the electrode assembly 200 removed by the corresponding sub-feeding mechanism.

[0096] The shaping mechanism 30 includes a first pressing plate 31 and a second pressing plate 32. The first pressing plate 31 and the second pressing plate 32 are both structures in the shaping mechanism 30 for pressing the electrode assembly 200. The first pressing plate 31 and the second pressing plate 32 are spaced apart. The first pressing plate 31 and the second pressing plate 32 are spaced apart along the height direction of the shaping mechanism 30, and may also be spaced apart in other directions.

[0097] The first pressing plate 31 and the second pressing plate 32 are arranged at intervals, and a shaping space is formed between the first pressing plate 31 and the second pressing plate 32. The shaping space is used to accommodate the electrode assembly 200 removed by the unloading mechanism 20. After the electrode assembly 200 is transported to the shaping space, the electrode assembly 200 can be placed on the first pressing plate 31 or on the second pressing plate 32 according to the positions of the first pressing plate 31 and the second pressing plate 32.

[0098] The first pressing plate 31 and the second pressing plate 32 can move towards each other, that is, the first pressing plate 31 and the second pressing plate 32 can move close to each other; after the electrode assembly 200 is placed in the shaping space, the first pressing plate 31 can be pressed against the electrode assembly 200 close to the second pressing plate 32 to shape the electrode assembly 200 by cold pressing or hot pressing.

[0099] The movement of the first pressing plate 31 and the second pressing plate 32 toward each other may be a relative movement of the first pressing plate 31 relative to the second pressing plate 32. For example, the second pressing plate 32 may be fixed and the first pressing plate 31 may be moved closer to or farther from the second pressing plate 32; the first pressing plate 31 may be fixed and the second pressing plate 32 may be moved closer to or farther from the first pressing plate 31; and both the first pressing plate 31 and the second pressing plate 32 may be moved and the two may be moved closer to or farther from each other.

[0100] After the electrode assembly 200 is placed in the shaping space, the electrode assembly 200 is located between the first pressing plate 31 and the second pressing plate 32. At this time, the first pressing plate 31 and the second pressing plate 32 can approach each other and press on the electrode assembly 200 to shape the electrode assembly 200. After the electrode assembly 200 is shaped, the first pressing plate 31 and the second pressing plate 32 can also move away from each other to facilitate the removal of the electrode assembly 200 from the shaping mechanism 30 and proceed to the next step.

[0101] It can be understood that the shaping mechanism 30 can also include a frame 33, which is used to provide a fixed foundation for the first pressure plate 31, the second pressure plate 32 or other structures; the frame 33 can include a frame structure, or a box structure or other structure; the material of the frame 33 can include metal, plastic or other materials.

[0102] After the winding mechanism 10 completes one winding and obtains a wound electrode assembly 200, the unloading mechanism 20 removes the electrode assembly 200 from the winding mechanism 10, and the removed electrode assembly 200 is transported to the shaping mechanism 30, and the shaping mechanism 30 shapes the electrode assembly 200; it can be seen that the cycle for the winding mechanism 10 to complete the next winding and be taken out depends on the slower one of the unloading mechanism 20 and the shaping mechanism 30.

[0103] For example, when the unloading mechanism 20 takes materials at a slow speed, after the winding mechanism 10 completes one winding and obtains a wound electrode assembly 200, the unloading mechanism 20 takes materials. At this time, the shaping mechanism 30 has completed the shaping process of the previous electrode assembly 200 and is in an idle waiting state, and the winding mechanism 10 needs to wait for the unloading mechanism 20 to take materials before it can carry out the next winding or transport the next wound electrode assembly 200 to the unloading mechanism 20.

[0104] In this embodiment, the unloading mechanism 20 includes a first sub-unloading mechanism 20a and a second sub-unloading mechanism 20b to improve the material picking efficiency of the unloading mechanism 20 and reduce the waiting time of the winding mechanism 10; when the shaping processing time of the shaping mechanism 30 is short, a single shaping mechanism 30 can adapt to the material picking efficiency of the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b.

[0105] The winding device 100 includes at least one shaping mechanism 30, that is, the number of shaping mechanisms 30 can be one, or two or more. For example, the number of shaping mechanisms 30 can be one, in which case the shaping cycle of the electrode assembly 200 by the shaping mechanism 30 is relatively short, and the shaping time of one electrode assembly 200 by the shaping mechanism 30 should be less than or equal to half of the material taking time of the first sub-unloading mechanism 20a or the second sub-unloading mechanism 20b, wherein the material taking time of the first sub-unloading mechanism 20a or the second sub-unloading mechanism 20b refers to the time from the first sub-unloading mechanism 20a or the second sub-unloading mechanism 20b entering the dependent unloading station 16 to returning to the corresponding unloading station from the shaping mechanism 30 The time required for the first sub-unloading mechanism 20a or the second sub-unloading mechanism 20b to remove the electrode assembly 200 from the winding needle 11, the time required for the first sub-unloading mechanism 20a or the second sub-unloading mechanism 20b to move from one side of the unloading station 16 to the shaping mechanism 30, the time required for the first sub-unloading mechanism 20a or the second sub-unloading mechanism 20b to place the electrode assembly 200 in the shaping space, and the time required for the first sub-unloading mechanism 20a or the second sub-unloading mechanism 20b to return from the shaping mechanism 30 to the corresponding unloading station 16. At this time, when the electrode assembly 200 removed by the second sub-unloading mechanism 20b is transported to the shaping mechanism 30, the shaping mechanism 30 has completed the shaping of the previous electrode assembly 200, and at this time the shaping space is an empty space, wherein the previous electrode assembly 200 is the electrode assembly 200 removed by the first sub-unloading mechanism 20a.

[0106] In this embodiment, a first sub-unloading mechanism 20a and a second sub-unloading mechanism 20b are provided so that each unloading mechanism 20 can remove the electrode assembly 200 on the winding mechanism 10 and perform subsequent shaping processing; in this arrangement, the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b can take materials simultaneously or alternately, thereby reducing the time that the winding mechanism 10 waits for unloading, improving the efficiency of the unloading process, and thus being able to improve the efficiency of the entire processing process.

[0107] In addition, in this embodiment, a turret 12 and multiple workstations are provided. The turret 12 can drive the winding needle 11 to move to each workstation, and different processes of the electrode assembly 200 can be performed at different workstations respectively. This setting can reduce the waiting time of the turret 12 at the same position, thereby improving the efficiency of the winding mechanism 10.

[0108] refer to Figures 2 to 4 In some embodiments, each workstation includes a blanking workstation 16 , and the first sub-blanking mechanism 20 a and the second sub-blanking mechanism 20 b are configured to alternately remove the electrode assembly 200 from the winding needle 11 of the blanking workstation 16 .

[0109] Each workstation includes a material unloading workstation 16 , and the first sub-material unloading mechanism 20 a and the second sub-material unloading mechanism 20 b are both capable of removing the wound electrode assembly 200 from the material unloading workstation 16 .

[0110] The first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b can alternately remove the wound electrode assembly 200 from the unloading station 16; that is, in the process of the first sub-unloading mechanism 20a removing the electrode assembly 200 on the unloading station 16 and moving it to the conveyor belt, other conveying mechanisms or the shaping mechanism 30, the second sub-unloading mechanism 20b can move to the side of the unloading station 16 and take the next electrode assembly 200 moved to the unloading station 16; in the process of the second sub-unloading mechanism 20b removing the electrode assembly 200 on the unloading station 16 and moving it to the conveyor belt, other conveying mechanisms or the shaping mechanism 30, the first sub-unloading mechanism 20a can move to the side of the unloading station 16 and take the next electrode assembly 200 moved to the unloading station 16, and the cycle is repeated, thereby improving the unloading efficiency.

[0111] In this embodiment, the number of the shaping mechanisms 30 may be one, or two or more.

[0112] After the unloading mechanism 20 removes the wound electrode assembly 200 from the winding mechanism 10, the electrode assembly 200 needs to be moved to the conveyor belt 322, transported by other conveying mechanisms, or directly transported to the shaping mechanism 30. Therefore, there is a time interval between the two material pick-ups by the unloading mechanism 20, and it is easy for the winding mechanism 10 to wait for the unloading mechanism 20 to return to the side of the winding mechanism 10 and pick up the material during this time interval, resulting in low efficiency.

[0113] Accordingly, in this embodiment, the first sub-material unloading mechanism 20a and the second sub-material unloading mechanism 20b act alternately to pick up materials, thereby reducing the time for the winding mechanism 10 to wait for unloading materials and improving the efficiency of the unloading process.

[0114] refer to Fig. 9 , Fig.10 In some embodiments, each workstation includes a winding station 13, a finishing station 14, a gluing station 15, a material unloading station 16 and a waiting station 17, and the turret 12 is configured to drive the winding needle 11 to pass through the winding station 13, the finishing station 14, the gluing station 15, the material unloading station 16 and the waiting station 17 in sequence.

[0115] The winding station 13 refers to a station where the winding needle 11 winds the separator and the electrode piece. When the winding needle 11 is located at the winding station 13, the winding needle 11 can receive the separator and the electrode piece and can wind the separator and the electrode piece into a rolled electrode assembly 200.

[0116] The finishing station 14 refers to a station that performs finishing treatment on the rolled electrode assembly 200. After the isolation membrane and the electrode piece are wound, the outermost part of the isolation membrane and the electrode piece is easy to warp up. The finishing treatment is used to make the isolation membrane and the electrode piece of the outermost circle of the electrode assembly 200 fit the electrode assembly 200; the finishing treatment can be achieved by a pressure plate, a pressure roller or other finishing structures, that is, the outermost part of the isolation membrane and the electrode piece are pressed against the electrode assembly 200 by the finishing structure.

[0117] The gluing station 15 refers to a station for gluing the finished electrode assembly 200. After the electrode assembly 200 is finished, the gluing treatment is used to glue the tail end of the outermost circle of the electrode assembly 200 to fix the outermost circle of the electrode assembly 200. At this time, the electrode assembly 200 is difficult to disperse and the shape of the electrode assembly 200 is relatively fixed; what is obtained after the gluing treatment is the completed electrode assembly 200.

[0118] The unloading station 16 refers to the station where the wound electrode assembly 200 can be located in the winding mechanism 10 , and the unloading mechanism 20 can move to one side of the unloading station 16 and remove the wound electrode assembly 200 from the unloading station 16 .

[0119] When the unloading mechanism 20 includes a first sub-unloading mechanism 20a and a second sub-unloading mechanism 20b, the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b can both remove the wound electrode assembly 200 from the unloading station 16; the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b can be operated simultaneously to remove the same electrode assembly 200, or the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b can be operated alternately to remove different electrode assemblies 200.

[0120] The waiting station 17 refers to the station to which the winding needle 11 can move after the electrode assembly 200 on the winding needle 11 is removed. The winding needle 11 can perform the needle threading process at this position, that is, guide the isolation membrane and the electrode sheet onto the winding needle 11; the winding needle 11 can also be retracted into the turret 12 at this position and re-extended from the turret 12 at the winding station 13 to avoid other structural parts and reduce collisions; the winding needle 11 can also perform other actions at the waiting station 17.

[0121] The turret 12 is configured to drive the winding needle 11 to pass through the winding station 13, the finishing station 14, the gluing station 15, the unloading station 16 and the waiting station 17 in sequence, that is, the winding station 13, the finishing station 14, the gluing station 15, the unloading station 16 and the waiting station 17 are arranged in sequence along the movement trajectory of the winding needle 11; the winding needle 11 can pass through the winding station 13, the finishing station 14, the gluing station 15, the unloading station 16 and the waiting station 17 in sequence under the drive of the turret 12 to complete the winding, finishing, gluing and unloading processes of the electrode assembly 200; after the winding needle 11 moves to the waiting station 17, the winding needle 11 can go to the waiting station 17 and then return to the winding station 13 to realize a cyclic action.

[0122] The number of winding needles 11 can be greater than or equal to the number of each workstation, that is, when the winding mechanism 10 includes five workstations, namely, a winding station 13, a finishing station 14, a gluing station 15, a material unloading station 16 and a waiting station 17, the winding mechanism 10 can include five winding needles 11, or it can include six or more winding needles 11.

[0123] For example, the winding mechanism 10 may include five winding needles 11, and the five winding needles 11 can be respectively located in the winding station 13, the finishing station 14, the gluing station 15, the unloading station 16 and the waiting station 17 at the same time, that is, when one winding needle 11 is winding the electrode assembly 200, the electrode assemblies 200 on the other winding needles 11 can be finished, glued and unloaded respectively, and the winding action of the electrode assembly 200 can be divided into different processes and performed at different positions, thereby reducing the waiting time of the turret 12 and the winding needle 11 at the same position.

[0124] In this embodiment, each workstation corresponds to a different process, so that the winding, finishing, gluing, unloading and other processes of the electrode assembly 200 can be carried out at different positions, thereby reducing the waiting time of the turret 12 at the same position and improving the efficiency of the winding mechanism 10.

[0125] refer to Figures 5 to 8 In some embodiments, each workstation includes two unloading workstations 16 , and the first sub-unloading mechanism 20 a and the second sub-unloading mechanism 20 b are configured to remove the electrode assembly 200 from the winding needles 11 of different unloading workstations 16 .

[0126] Each workstation includes at least two unloading stations 16, that is, each workstation may include two unloading stations 16, or may include three or more unloading stations 16; when each workstation includes two unloading stations 16, the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b can respectively remove the wound electrode assembly 200 from different unloading stations 16, that is, the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b can respectively correspond to different unloading stations 16.

[0127] The first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b can simultaneously remove the wound electrode assembly 200 from the corresponding different unloading stations 16, and the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b can also alternately remove the wound electrode assembly 200 from the corresponding different unloading stations 16.

[0128] The first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b can alternately remove the wound electrode assembly 200 from the corresponding different unloading stations 16; that is, in the process that the first sub-unloading mechanism 20a removes the electrode assembly 200 on the corresponding unloading station 16 and moves it to the conveyor belt, other conveying mechanisms for transportation or the shaping mechanism 30, the second sub-unloading mechanism 20b can move to the side of the corresponding unloading station 16 and remove the electrode assembly 200; in the process that the second sub-unloading mechanism 20b removes the electrode assembly 200 on the corresponding unloading station 16 and moves it to the conveyor belt, other conveying mechanisms for transportation or the shaping mechanism 30, the first sub-unloading mechanism 20a can move to the side of the corresponding unloading station 16 and remove the electrode assembly 200, and the cycle is repeated, thereby improving the unloading efficiency.

[0129] After the first unloading mechanism 20a and the second unloading mechanism 20b have taken down an electrode assembly 200 from the corresponding unloading station 16, the winding mechanism 10 can again provide two wound electrode assemblies 200 for the first unloading mechanism 20a and the second unloading mechanism 20b to take.

[0130] Taking the example that the first sub-unloading mechanism 20a directly transports the electrode assembly 200 to the shaping mechanism 30, a movement cycle of the first sub-unloading mechanism 20a refers to a movement cycle in which the first sub-unloading mechanism 20a takes material from the corresponding unloading station 16 and returns to the side of the corresponding unloading station 16 to prepare for the next material taking; for example, the movement cycle may include four action processes: in the first action process, the first sub-unloading mechanism 20a takes the electrode assembly 200 from the corresponding unloading station 16, and at this time, the electrode assembly 200 still exists in another unloading station 16; in the second action process, the first sub-unloading mechanism 20a transports the electrode assembly 200 to the side of the shaping mechanism 30, and at this time, the second sub-unloading mechanism 20b takes the electrode assembly 200 from the corresponding unloading station 16 00, at the same time, there is a wound electrode assembly 200 in a feeding station 16 of the winding mechanism 10; in the third action process, the first sub-feeding mechanism 20a places the corresponding electrode assembly 200 in the shaping space, and the second sub-feeding mechanism 20b transports the corresponding electrode assembly 200 to the side of the shaping mechanism 30; in the fourth action process, the first sub-feeding mechanism 20a returns to the side of the corresponding feeding station 16, and the second sub-feeding mechanism 20b places the corresponding electrode assembly 200 in the shaping space, and at the same time, there is a wound electrode assembly 200 in another feeding station 16 of the winding mechanism 10, that is, there are wound electrode assemblies 200 in both feeding stations 16; this cycle is repeated.

[0131] Corresponding to the first sub-unloading mechanism 20a, taking the second sub-unloading mechanism 20b directly transporting the electrode assembly 200 to the shaping mechanism 30 as an example, the movement cycle of the second sub-unloading mechanism 20b includes four action processes: in the first action process, the second sub-unloading mechanism 20b moves from one side of the shaping mechanism 30 to the side of the corresponding unloading station 16; in the second action process, the second sub-unloading mechanism 20b removes the electrode assembly 200 from the corresponding unloading station 16; in the third action process, the second sub-unloading mechanism 20b transports the electrode assembly 200 to one side of the shaping mechanism 30; in the fourth action process, the second sub-unloading mechanism 20b places the corresponding electrode assembly 200 in the shaping space; and this cycle is repeated.

[0132] According to the above-mentioned action process and the time required for the shaping mechanism 30 to shape one electrode assembly 200, the number of the shaping mechanism 30 can be one, or two or more.

[0133] By way of example, the number of shaping mechanisms 30 can be one, in which case the shaping processing cycle of the electrode assembly 200 by the shaping mechanism 30 is relatively short, and the duration of the shaping processing of one electrode assembly 200 by the shaping mechanism 30 should be less than or equal to the duration required for one sub-action process of the first sub-feeding mechanism 20a and the second sub-feeding mechanism 20b to take materials; by way of example, the number of shaping mechanisms 30 can also be two or more.

[0134] The first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b can also simultaneously remove the wound electrode assembly 200 from the corresponding different unloading stations 16, that is, the sub-action processes of the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b are synchronized or approximately synchronized.

[0135] For example, taking the example that the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b directly transport the electrode assembly 200 to the shaping mechanism 30, during the first action process, the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b synchronously remove the electrode assembly 200 from the corresponding unloading station 16; during the second action process, the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b synchronously carry the corresponding electrode assembly 200 to the side of the shaping mechanism 30, and at the same time, there is a roll in a unloading station 16. The electrode assembly 200 after winding; in the third action process, the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b synchronously place the corresponding electrode assembly 200 in the shaping space; in the fourth action process, the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b synchronously return to the side of the corresponding unloading station 16, and at the same time, there is the electrode assembly 200 after winding in the other unloading station 16, that is, there are electrode assemblies 200 after winding in both unloading stations 16; this cycle is repeated.

[0136] According to the above-mentioned action process and the time required for the shaping mechanism 30 to shape one electrode assembly 200, the number of the shaping mechanism 30 can be one, or two or more.

[0137] For example, the number of shaping mechanisms 30 can be one, in which case the first pressing plate 31 can simultaneously shape each electrode assembly 200 accommodated in the shaping space, that is, the first pressing plate 31 moves toward the direction close to the second pressing plate 32 to simultaneously shape each electrode assembly 200 in the shaping space; at this time, the areas of the first pressing plate 31 and the second pressing plate 32 can be made larger, so that the first pressing plate 31 moves along the first direction close to the second pressing plate 32 to simultaneously hold two or more electrode assemblies 200; the shaping mechanism 30 can also be enabled to simultaneously shape two or more electrode assemblies 200 by other means.

[0138] In this embodiment, the workstations include at least two unloading stations 16, and the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b are respectively opposite to different unloading stations 16, so that the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b can take materials from the corresponding unloading stations 16 simultaneously or alternately, which can not only increase the number of materials taken and unloaded in a single time, but also reduce the time for the turret 12 to wait for unloading, thereby improving the efficiency of the unloading process.

[0139] refer to Fig. 9 , Fig.10 In some embodiments, each workstation includes a winding station 13, a finishing station 14, a first unloading station 161, a second unloading station 162 and a waiting station 17, and the turret 12 is configured to drive the winding needle 11 to pass through the winding station 13, the finishing station 14, the first unloading station 161, the second unloading station 162 and the waiting station 17 in sequence.

[0140] The winding station 13 refers to a station where the winding needle 11 winds the separator and the electrode piece. When the winding needle 11 is located at the winding station 13, the winding needle 11 can receive the separator and the electrode piece and can wind the separator and the electrode piece into a rolled electrode assembly 200.

[0141] The finishing station 14 refers to a station that performs finishing treatment on the rolled electrode assembly 200. After the isolation membrane and the electrode piece are wound, the outermost part of the isolation membrane and the electrode piece is easy to warp up. The finishing treatment is used to make the isolation membrane and the electrode piece of the outermost circle of the electrode assembly 200 fit the electrode assembly 200; the finishing treatment can be achieved by a pressure plate, a pressure roller or other finishing structures, that is, the outermost part of the isolation membrane and the electrode piece are pressed against the electrode assembly 200 by the finishing structure.

[0142] After the electrode assembly 200 is finished, the electrode assembly 200 is also glued at the finishing station 14 to fix the outermost circle of the electrode assembly 200. At this time, the electrode assembly 200 is difficult to disperse and the shape of the electrode assembly 200 is relatively fixed; the electrode assembly 200 obtained after the glue treatment is a wound electrode assembly 200.

[0143] The first unloading station 161 and the second unloading station 162 both refer to the stations where the wound electrode assembly 200 can be located in the winding mechanism 10; when the unloading mechanism 20 includes a first sub-unloading mechanism 20a and a second sub-unloading mechanism 20b, the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b can move to one side of the first unloading station 161 and the second unloading station 162 respectively and remove the wound electrode assembly 200 from the corresponding first unloading station 161 and the second unloading station 162.

[0144] When the unloading mechanism 20 includes a first sub-unloading mechanism 20a and a second sub-unloading mechanism 20b, the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b can be operated simultaneously to remove different electrode assemblies 200 from the corresponding first unloading station 161 and the second unloading station 162, or the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b can be operated alternately to remove different electrode assemblies 200 from the corresponding first unloading station 161 and the second unloading station 162.

[0145] The waiting station 17 refers to the station to which the winding needle 11 can move after the electrode assembly 200 on the winding needle 11 is removed. The winding needle 11 can perform the needle threading process at this position, that is, guide the isolation membrane and the electrode sheet onto the winding needle 11; the winding needle 11 can also be retracted into the turret 12 at this position and re-extended from the turret 12 at the winding station 13 to avoid other structural parts and reduce collisions; the winding needle 11 can also perform other actions at the waiting station 17.

[0146] In this embodiment, the workstation includes two unloading workstations 16, which are respectively opposite to the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b, thereby improving the efficiency of the unloading mechanism 20 and the efficiency of the entire unloading process.

[0147] refer to Figure 1 In some embodiments, the winding device 100 includes at least two shaping mechanisms 30, wherein at least one shaping mechanism 30 is configured to shape the electrode assembly 200 removed by the first sub-feeding mechanism 20a, and at least another shaping mechanism 30 is configured to shape the electrode assembly 200 removed by the second sub-feeding mechanism 20b.

[0148] The number of the shaping mechanisms 30 is at least two, that is, the number of the shaping mechanisms 30 can be two, or three or more.

[0149] The first sub-unloading mechanism 20 a and the second sub-unloading mechanism 20 b are respectively opposite to different shaping mechanisms 30 , that is, the electrode assemblies 200 removed by the first sub-unloading mechanism 20 a and the second sub-unloading mechanism 20 b will be transported to the corresponding shaping mechanisms 30 , respectively.

[0150] When there are two shaping mechanisms 30 , there may be only one unloading station 16 , or there may be two unloading stations 16 , namely a first unloading station 161 and a second unloading station 162 .

[0151] In this embodiment, the number of shaping mechanisms 30 is at least two, and the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b correspond to different shaping mechanisms 30 respectively, so as to reduce the influence of the shaping time of the shaping mechanism 30 on the unloading process, thereby better improving the efficiency of the unloading process.

[0152] refer to Fig.11 , Fig.12 In some embodiments, the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b both include a clamping needle assembly 21 and a transfer assembly 22. The clamping needle assembly 21 is used to clamp the electrode assembly 200; the transfer assembly 22 is used to drive the clamping needle assembly 21 to move back and forth between the winding mechanism 10 and the shaping mechanism 30.

[0153] The first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b both include a needle clamping assembly 21 and a transfer assembly 22, and the needle clamping assembly 21 and the transfer assembly 22 have the same functions in the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b. The first sub-unloading mechanism 20a is taken as an example for explanation below.

[0154] The clamping needle assembly 21 refers to a structure in the first sub-unloading mechanism 20a for removing the electrode assembly 200 from the winding needle 11. The clamping needle assembly 21 can also be used to place the electrode assembly 200 in the shaping mechanism 30; the clamping needle assembly 21 can include a clamping claw, a clamping needle or other structures capable of clamping the electrode assembly 200.

[0155] The transfer component 22 refers to the structure in the first sub-unloading mechanism 20a for driving the needle clamping component 21 to move; the transfer component 22 may include a conveyor belt, and the needle clamping component 21 is arranged on the conveyor belt, so that the transfer component 22 can drive the needle clamping component 21 to move; the transfer component 22 may also include a screw slider cooperated with a driving motor, and the needle clamping component 21 is arranged on the slider, at this time, the driving motor drives the screw to rotate to drive the slider to move, so that the transfer component 22 can drive the needle clamping component 21 to move; it can be understood that the transfer component 22 may also include other structures to drive the needle clamping component 21 to move, and is not limited to the above two types.

[0156] The transfer assembly 22 is used to drive the clamping needle assembly 21 to move back and forth between the winding mechanism 10 and the shaping mechanism 30, that is, the transfer assembly 22 can drive the clamping needle assembly 21 to leave the winding mechanism 10 and move to the side of the shaping mechanism 30, and the transfer assembly 22 can also drive the clamping needle assembly 21 to leave the shaping mechanism 30 and move to the side of the winding mechanism 10; at this time, the first sub-unloading mechanism 20a is not only used to remove the electrode assembly 200 from the winding mechanism 10, but also used to transport the electrode assembly 200 to the shaping mechanism 30.

[0157] The transport component 22 can be directly connected to the needle clamping component 21 to drive the needle clamping component 21 to move, and the transport component 22 can also be indirectly connected to the needle clamping component 21 through an intermediate structure to drive the needle clamping component 21 to move.

[0158] It can be understood that, in the process that the transport assembly 22 drives the clamping needle assembly 21 to move from one side of the winding needle 11 to the shaping mechanism 30, the clamping needle assembly 21 can always clamp and fix the electrode assembly 200, thereby reducing the occurrence of loose electrode assembly 200. In the case that the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b remove the same electrode assembly 200 at the same time, the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b can better fix the electrode assembly 200 and can further reduce the occurrence of loose electrode assembly 200.

[0159] The first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b both include a clamping needle assembly 21 and a transfer assembly 22, that is, the second sub-unloading mechanism 20b may also include a clamping needle assembly 21 and a transfer assembly 22. This arrangement allows the various structural parts of the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b to be interchangeable, reducing the manufacturing, use and maintenance costs, and also allows the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b to adopt the same control logic, reducing the control difficulty.

[0160] This embodiment provides some specific structures of the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b, so as to drive the clamping needle assembly 21 to move from the side of the winding needle 11 to the side of the shaping mechanism 30 through the transfer assembly 22, so that the unloading mechanism 20 can directly transfer the electrode assembly 200 to the shaping mechanism 30 without transporting the electrode assembly 200 through a conveyor belt.

[0161] refer to Fig.11 , Fig.12 In some embodiments, the needle clamping assembly 21 includes a substrate 211 and a needle clamping assembly movably disposed on the substrate 211; the transfer assembly 22 includes a first sub-transfer assembly 221, the substrate 211 is disposed on the first sub-transfer assembly 221, and the first sub-transfer assembly 221 is used to drive the needle clamping assembly 21 to move along a first direction to enter or exit the shaping space.

[0162] Fig.12 , the direction where the X-axis is located is the first direction.

[0163] The substrate 211 refers to a structure in the needle clamping assembly 21 that is used to provide a fixed foundation for other structures. The substrate 211 can also be directly or indirectly connected to the transfer assembly 22 so that the transfer assembly 22 can drive the needle clamping assembly 21 to move; the shape of the substrate 211 can be a square plate, a prism or other shapes; the material of the substrate 211 can include metal, plastic or other materials.

[0164] The clamping needle refers to a structure in the clamping needle assembly 21 used to remove the electrode assembly 200 from the winding needle 11. The clamping needle can enter the inner circle of the wound electrode assembly 200 to stretch the electrode assembly 200 and separate the electrode assembly 200 from the corresponding winding needle 11; the clamping needle can clamp the electrode assembly 200 to separate the electrode assembly 200 from the corresponding winding needle 11.

[0165] The first sub-transfer component 221 refers to a structure in the corresponding first sub-unloading mechanism 20a or the second sub-unloading mechanism 20b for driving the clamping needle component 21 to move. The first sub-transfer component 221 may include a cylinder, a hydraulic cylinder or other electrical components, and may also include a screw with a motor, a gear rack with a motor or other mechanical structures; the first sub-transfer component 221 may be connected to the corresponding substrate 211 to drive the clamping needle component 21 to move. The first sub-transfer component 221 may be directly connected to the substrate 211 by welding, screwing or other means, and may also be indirectly connected to the substrate 211 through an intermediate structure.

[0166] The first sub-transport component 221 is used to drive the clamping needle component 21 to move along the first direction, and the first direction is the direction of entering or exiting the shaping space. The first sub-transport component 221 can drive the clamping needle component 21 to move along the first direction and enter the shaping space, thereby transporting the electrode assembly 200 into the shaping space. The first sub-transport component 221 can also drive the clamping needle component 21 to move along the first direction and exit the shaping space to reduce the interference of the clamping needle component 21 on the shaping process of the electrode assembly 200, and at the same time enable the clamping needle component 21 to return to the side of the winding mechanism 10 for the next material collection.

[0167] It can be understood that the winding mechanism 10 and the shaping mechanism 30 can be arranged on the same side of the transfer component 22. At this time, the first sub-transport component 221 can also drive the clamping needle component 21 to approach or move away from the corresponding winding needle 11, and the first direction is the axial direction of the winding needle 11; when the first sub-unloading mechanism 20a is located on one side of the winding mechanism 10, the first sub-transport component 221 can drive the clamping needle component 21 to move along the first direction, so that the clamping needle component 21 can clamp the electrode assembly 200. The first sub-transport component 221 can also drive the clamping needle component 21 to move along the first direction and away from the winding needle 11, so that the clamping needle component 21 can remove the electrode assembly 200 from the winding needle 11.

[0168] In the technical solution of this embodiment, the clamping needle assembly 21 includes a clamping needle arranged on a substrate 211, so that the electrode assembly 200 can be separated from the winding needle 11 through the clamping needle; the transport assembly 22 includes a first sub-transport assembly 221, so that the clamping needle can be driven to enter or exit the shaping space through the first sub-transport assembly 221, thereby transporting the electrode assembly 200 to the shaping mechanism 30.

[0169] refer to Fig.11 , Fig.12In some embodiments, the transfer component 22 also includes: a second sub-transfer component 222, used to drive the needle clamping component 21 to move along the second direction; a third sub-transfer component 223, used to drive the needle clamping component 21 to move along the third direction; wherein the first direction, the second direction and the third direction are perpendicular to each other, and the first sub-transfer component 221, the second sub-transfer component 222 and the third sub-transfer component 223 are connected in pairs.

[0170] Fig.11 , Fig.12 In the figure, the direction of the X-axis is the first direction, the direction of the Y-axis is the second direction, and the direction of the Z-axis is the third direction.

[0171] Similar to the first sub-transfer component 221, the second sub-transfer component 222 refers to a structure in the corresponding first sub-unloading mechanism 20a or the second sub-unloading mechanism 20b for driving the clamping needle component 21 to move. The second sub-transfer component 222 may include a cylinder, a hydraulic cylinder or other electrical components, and may also include a screw with a motor, a gear rack with a motor or other mechanical structures; the second sub-transfer component 222 may be connected to the first sub-transfer component 221 to indirectly drive the clamping needle component 21 to move through the first sub-transfer component 221.

[0172] Similar to the first sub-transfer component 221, the third sub-transfer component 223 refers to a structure in the corresponding first sub-unloading mechanism 20a or the second sub-unloading mechanism 20b for driving the clamping needle component 21 to move. The third sub-transfer component 223 may include a cylinder, a hydraulic cylinder or other electrical components, and may also include a screw with a motor, a gear rack with a motor or other mechanical structures; the third sub-transfer component 223 may be connected to the second sub-transfer component 222 to indirectly drive the clamping needle component 21 to move through the second sub-transfer component 222 and the first sub-transfer component 221.

[0173] The second sub-transfer component 222 is used to drive the clamping needle component 21 to move along the second direction, and the third sub-transfer component 223 is used to drive the clamping needle component 21 to move along the third direction, wherein the second direction, the third direction and the first direction are perpendicular to each other, that is, under the joint action of the first sub-transfer component 221, the second sub-transfer component 222 and the third sub-transfer component 223, the clamping needle component 21 can have three different movement directions, so that the clamping needle component 21 can be close to or away from the winding mechanism 10, to be close to or away from the corresponding unloading station 16, and the clamping needle component 21 can enter or exit the shaping component, and at the same time, the clamping needle component 21 can reciprocate between the winding mechanism 10 and the shaping mechanism 30.

[0174] For example, the second direction can be the arrangement direction of the turret 12 and the shaping mechanism 30, and the third direction can be the height direction of the turret 12 and the shaping mechanism 30; at this time, the first sub-transfer component 221 can drive the clamping needle component 21 to enter the corresponding unloading station 16, and drive the clamping needle component 21 to exit the corresponding unloading station 16 after the clamping needle component 21 clamps the electrode assembly 200; thereafter, the second sub-transfer component 222 drives the clamping needle component 21 to move along the second direction to transfer the electrode assembly 200 from one side of the turret 12 to one side of the shaping mechanism 30; affected by the structure of the turret 12 and the shaping mechanism 30, the unloading station 16 and the shaping space are usually not at the same height, so after the clamping needle component 21 moves to one side of the shaping mechanism 30, the third sub-transfer component 223 drives the clamping needle component 21 to move along the third direction to make the clamping needle component 21 opposite to the shaping space, thereby facilitating the first sub-transfer component 221 to drive the clamping needle component 21 to enter the shaping space.

[0175] This embodiment provides some specific structures of the transfer component 22, so that the transfer component 22 includes a second sub-transport component 222 and a third sub-transport component 223 with different movement directions, so that the transfer component 22 can drive the clamping needle component 21 to move in different directions, thereby enabling the transfer component 22 to drive the clamping needle component 21 to clamp the electrode assembly 200 and transfer the electrode assembly 200 to the shaping mechanism 30.

[0176] refer to Fig.12 In some embodiments, the clamping needles include at least two groups of first clamping needles 212 and second clamping needles 213 that are relatively arranged; the clamping needle assembly 21 also includes a clamping needle moving assembly (not shown in the figure) for driving the first clamping needles 212 to approach or move away from the corresponding second clamping needles 213. The first clamping needle 212 refers to a structure in the clamping needle assembly 21 used to remove the electrode assembly 200 from the winding needle 11; the number of the first clamping needle 212 can be one, or two or more; the first clamping needle 212 can be a cylindrical structure, or a prismatic structure or a structure of other shapes; the material of the first clamping needle 212 includes metal, plastic or other materials.

[0177] The second clamping needle 213 refers to a structure in the clamping needle assembly 21 used to assist the first clamping needle 212 in fixing the electrode assembly 200; the number of the second clamping needles 213 can be one, or two or more, and the number of the second clamping needles 213 can be set according to the number of the first clamping needles 212 so that each first clamping needle 212 can correspond to a second clamping needle 213; the second clamping needle 213 can be a cylindrical structure, or a prismatic structure or a structure of other shapes; the material of the second clamping needle 213 includes metal, plastic or other materials.

[0178] The clamping needle moving assembly (not shown in the figure) refers to the structure in the clamping needle assembly 21 for driving the first clamping needle 212 to move. The clamping needle moving assembly may include a driving structure for driving the first clamping needle 212 to move. For example, the clamping needle moving assembly may include electrical devices such as a cylinder and an electric cylinder. The clamping needle moving assembly may also include mechanical structures such as a forward and reverse rotating screw. According to the specific structure of the clamping needle moving assembly, the clamping needle moving assembly may be fixedly connected to the substrate 211, or may be movably arranged on the substrate 211.

[0179] Since the electrode assembly 200 is wound on the winding needle 11, the electrode assembly 200 is an annular structure, and the electrode assembly 200 includes an outer side facing the outside and an inner circle facing the winding needle 11. In the process of the clamping needle assembly 21 removing the electrode assembly 200, the first clamping needle 212 is located in the inner circle of the electrode assembly 200, and the second clamping needle 213 is located on the outer side of the electrode assembly 200. When each first clamping needle 212 enters the inner circle of the electrode assembly 200 and moves away from each other, the first clamping needle 212 moves toward the direction of approaching the adjacent second clamping needle 213. At this time, the portion of the electrode assembly 200 corresponding to the first clamping needle 212 can be clamped between the first clamping needle 212 and the adjacent second clamping needle 213, so that the electrode assembly 200 can be clamped and fixed on the clamping needle assembly 21 more stably.

[0180] The clamping needle moving assembly is used to drive the first clamping needle 212 to approach or move away from the corresponding second clamping needle 213. The movement of the first clamping needle 212 close to the second clamping needle 213 can clamp the battery assembly between the first clamping needle 212 and the second clamping needle 213. At the same time, the movement of the first clamping needle 212 close to the second clamping needle 213 can also open the electrode assembly 200, so that at least part of the electrode assembly 200 can be separated from the corresponding winding needle 11, thereby reducing the friction between the electrode assembly 200 and the winding needle 11, and facilitating the electrode assembly 200 to be separated from the winding needle 11; the first clamping needle 212 moving away from the second clamping needle 213 can release the electrode assembly 200.

[0181] Under the action of the clamping needle moving assembly, the first clamping needle 212 is movable relative to the substrate 211, and the second clamping needle 213 can be fixed relative to the substrate 211. At this time, the second clamping needle 213 can be fixedly connected to the substrate 211 by welding, bonding or other means, or can be detachably connected to the substrate 211 by screwing, clamping or other means; the second clamping needle 213 can also be movable relative to the substrate 211 to adapt to electrode assemblies 200 of different sizes. At this time, the second clamping needle 213 can be driven to move by a cylinder, an electric cylinder or other structure; it can be understood that, unlike the first clamping needle 212, the mobility of the second clamping needle 213 is mainly used to adapt to different sizes of different electrode assemblies 200. In the process of the clamping needle assembly 21 clamping the electrode assembly 200, the second clamping needle 213 may not move synchronously with the first clamping needle 212.

[0182] In the example, there are two first clamping needles 212 and two second clamping needles 213. In this case, the clamping needle moving assembly includes a forward and reverse rotating screw rod, and the two first clamping needles 212 are matched with the forward and reverse rotating screw rod, so that the rotation of the forward and reverse rotating screw rod can drive the two first clamping needles 212 to approach or move away from each other, thereby driving the two first clamping needles 212 to synchronously approach or move away from the corresponding second clamping needle 213.

[0183] It can be understood that the number of first clamping needles 212 can also be three, four or more, and the number of second clamping needles 213 can also be three, four or more accordingly. Each first clamping needle 212 can move towards or away from each other in at least two different directions, that is, each first clamping needle 212 has at least two different movement directions.

[0184] When the clamping needle assembly 21 removes the electrode assembly 200 from the winding needle 11, at least three first clamping needles 212 can better open the electrode assembly 200 to reduce the contact area between the inner circle of the electrode assembly 200 and the outer wall of the winding needle 11, thereby reducing the friction between the electrode assembly 200 and the winding needle 11, so that the clamping needle assembly 21 can better remove the electrode assembly 200 from the winding needle 11.

[0185] In the process of the moving assembly driving the clamping needle assembly 21 to move the electrode assembly 200, at least three first clamping needles 212 can better open the electrode assembly 200, so that the electrode assembly 200 is not easy to loosen and the inner circle of the electrode assembly 200 is not easy to collapse inward.

[0186] For example, the number of the first clamping needles 212 is three, and the three first clamping needles 212 can have two different movement directions, that is, two of the three first clamping needles 212 can approach or move away from each other in the same direction, and the other first clamping needle 212 moves in another direction; at this time, in the process of the clamping needle assembly 21 removing and transferring the electrode assembly 200, the three first clamping needles 212 can stretch the electrode assembly 200 into a triangular structure.

[0187] For example, the number of the first clamping needles 212 is four, and the four first clamping needles 212 can have two different movement directions, that is, two of the four first clamping needles 212 can approach or move away from each other in the same direction, and the other two first clamping needles 212 move in another direction; at this time, in the process of the clamping needle assembly 21 removing and transferring the electrode assembly 200, the four first clamping needles 212 can expand the electrode assembly 200 into a quadrilateral structure, for example, into a square or rectangular structure.

[0188] For example, the number of the first clamping needles 212 is six, and the six first clamping needles 212 can have two different movement directions, that is, two of the six first clamping needles 212 can approach or move away from each other in the same direction, and the other four first clamping needles 212 move in another direction; at this time, in the process of the clamping needle assembly 21 removing and transferring the electrode assembly 200, the six first clamping needles 212 can expand the electrode assembly 200 into a hexagonal structure.

[0189] In this embodiment, the clamping needle assembly 21 includes a first clamping needle 212 and a second clamping needle 213, and the first clamping needle 212 can move closer to or away from the second clamping needle 213, so as to clamp the electrode assembly 200 between the first clamping needle 212 and the second clamping needle 213, so as to better fix the electrode assembly 200 and reduce the situation where the electrode assembly 200 escapes from the clamping needle assembly 21; at the same time, the setting of the second clamping needle 213 can also limit the displacement of the first clamping needle 212, thereby reducing the situation where the electrode assembly 200 is damaged due to excessive force caused by the first clamping needle 212 moving too far.

[0190] In some embodiments, the clamping needle assembly 21 also includes a pressure sensor (not shown in the figure) that is communicatively connected to the clamping needle moving assembly. The pressure sensor is used to detect the pressure applied to the electrode assembly 200 when the first clamping needle 212 and the second clamping needle 213 clamp the electrode assembly 200.

[0191] The pressure sensor refers to a structure in the clamping needle assembly 21 for detecting the force applied to the electrode assembly 200. The numerical value detected by the pressure sensor is the pressure value obtained by the pressure sensor, and this pressure value is called the detection pressure. The pressure sensor can be arranged on the first clamping needle 212, or on the second clamping needle 213, or on both the first clamping needle 212 and the second clamping needle 213. It can be understood that the pressure sensor should be arranged on the side where the first clamping needle 212 and / or the second clamping needle 213 contact the electrode assembly 200.

[0192] In the case where the pressure sensor is arranged on the first clamping needle 212, after the first clamping needle 212 moves away from each other and contacts the electrode assembly 200, the first clamping needle 212 continues to move to form an interaction force between the first clamping needle 212 and the electrode assembly 200, and the detection pressure of the pressure sensor is the force; in the case where the pressure sensor is arranged on the second clamping needle 213, after the first clamping needle 212 moves away from each other and presses the electrode assembly 200 against the second clamping needle 213, an interaction force is formed between the electrode assembly 200 and the second clamping needle 213, and the detection pressure of the pressure sensor is the force.

[0193] A pressure threshold is preset in the clamping needle moving component. When the detected pressure is greater than or equal to the pressure threshold, the clamping needle moving component controls the first clamping needle 212 to stop moving.

[0194] The pressure sensor can send the detected pressure to the clamping needle moving assembly, and a pressure threshold is preset in the clamping needle moving assembly. The pressure threshold refers to the value of the force that is not easy to cause damage to the electrode assembly 200, so as to reduce the damage to the electrode assembly 200 that may be caused by the first clamping needle 212 and the second clamping needle 213 clamping the electrode assembly 200; at the same time, under the value of the pressure threshold, the first clamping needle 212 and the second clamping needle 213 can also clamp or fix the electrode assembly 200 more stably, so as to facilitate the transfer of the electrode assembly 200 and reduce the looseness of the electrode assembly 200.

[0195] For example, taking the number of the first clamping needles 212 as two, the pressure sensor is arranged on the first clamping needles 212, and the clamping needle moving assembly can control the two first clamping needles 212 to move away from each other and make the first clamping needles 212 abut against the electrode assembly 200; after the first clamping needle 212 abuts against the electrode assembly 200, the pressure sensor can detect the pressure value between the first clamping needle 212 and the electrode assembly 200 and form a detection pressure to send to the clamping needle moving assembly, the clamping needle moving assembly can compare the size relationship between the detection pressure and the pressure threshold, and the clamping needle moving assembly can control the first clamping needle 212 to stop moving when the detection pressure is greater than or equal to the pressure threshold.

[0196] For example, taking the number of the first clamping needles 212 as two, the pressure sensor is arranged on the second clamping needle 213, and the clamping needle moving assembly can control the two first clamping needles 212 to move away from each other, and press the electrode assembly 200 against the second clamping needle 213 through the first clamping needle 212; after the electrode assembly 200 is pressed against the second clamping needle 213, the pressure sensor can detect the pressure value between the electrode assembly 200 and the second clamping needle 213 and form a detection pressure to send to the clamping needle moving assembly, the clamping needle moving assembly can compare the size relationship between the detection pressure and the pressure threshold, and the clamping needle moving assembly can control the first clamping needle 212 to stop moving when the detection pressure is greater than or equal to the pressure threshold; it can be understood that when the pressure sensor is arranged on the second clamping needle 213, the pressure threshold can be smaller.

[0197] In the process that the first clamping needle 212 moves away from each other and clamps the electrode assembly 200 between the first clamping needle 212 and the second clamping needle 213, the pressure exerted by the electrode assembly 200 on the first clamping needle 212 or the second clamping needle 213 will gradually increase, and may cause damage to the electrode assembly 200; accordingly, the present embodiment provides a pressure sensor to detect the pressure exerted by the first clamping needle 212 or the second clamping needle 213 on the electrode assembly 200 through the pressure sensor, so that the clamping needle moving assembly controls the action state of the first clamping needle 212 through the detection pressure of the pressure sensor, so as to reduce the situation where the first clamping needle 212 and the second clamping needle 213 excessively clamp the electrode assembly 200 and cause damage to the electrode assembly 200.

[0198] refer to Fig.13 In some embodiments, the winding needle 11 includes a needle body 111 and at least two feed grooves 112 opened on the side of the needle body 111; in the axial direction of the needle body 111, at least one end of the feed groove 112 is connected to the space outside the needle body 111.

[0199] The needle body 111 refers to the structure of the winding needle 11 that winds the electrode assembly 200 and contacts the electrode assembly 200; the shape of the needle body 111 can be cylindrical, prismatic or other shapes; the material of the needle body 111 can include metal, plastic or other materials.

[0200] The material discharge groove 112 refers to the groove structure on the winding needle 11 for accommodating the material picking structure in the material discharge mechanism 20. When the material discharge mechanism 20 includes a first clamping needle 212, the material discharge groove 112 is used to accommodate the first clamping needle 212; the material discharge groove 112 is opened on the peripheral side surface of the needle body 111, and at least one end of the material discharge groove 112 is connected to the space outside the needle body 111, that is, the opening of the material discharge groove 112 faces outside the winding needle 11; the length direction of the material discharge groove 112 can be parallel to the axial direction of the needle body 111, or it can be set at an angle to the axial direction of the needle body 111; at least one end of the material discharge groove 112 along the axial direction of the needle body 111 is connected to the space outside the needle body 111, so as to facilitate the material picking structure in the material discharge mechanism 20 to enter the material discharge groove 112; along the depth direction of the material discharge groove 112, the cross-sectional shape of the material discharge groove 112 can be square, semicircular, trapezoidal or other shapes.

[0201] For example, the feed chute 112 has at least two openings, one of which is arranged along the axial direction of the feed chute 112 to facilitate the entry or exit of the first clamping needle 212; the other opening is arranged along the radial direction of the needle body 111. After the electrode assembly 200 is wound on the needle body 111, the electrode assembly 200 can close the opening of the feed chute 112. After the first clamping needle 212 enters the feed chute 112, it can move along the radial direction of the needle body 111 and pass through the opening to support the electrode assembly 200.

[0202] The number of the material discharge troughs 112 is at least two, that is, the number of the material discharge troughs 112 can be two, or three or more; when there are two material discharge troughs 112, the two material discharge troughs 112 can be symmetrically arranged about the axis of the needle body 111.

[0203] For example, when the unloading mechanism 20 includes a first clamping needle 212, the first clamping needle 212 can enter the unloading groove 112 along the axial direction of the needle body 111, and the first clamping needle 212 can also move in a direction away from the axis of the needle body 111, and can move from the opening of the unloading groove 112 to the outside of the winding needle 11 to contact the electrode assembly 200; after contacting the electrode assembly 200, the first clamping needle 212 can continue to move in a direction away from the axis of the needle body 111 and separate the electrode assembly 200 from the needle body 111, so as to facilitate the removal of the electrode assembly 200 from the winding needle 11.

[0204] This embodiment provides some structures of the winding needle 11 , and a material discharge groove 112 is provided on the needle body 111 , so that the first sub-material discharge mechanism 20 a and the second sub-material discharge mechanism 20 b can remove the electrode assembly 200 from the winding needle 11 .

[0205] In some embodiments, the winding device 100 further includes a position detection device (not shown) disposed on one side of the turret 12 , and the position detection device is configured to detect whether there is an electrode assembly 200 on the winding needle 11 in the unloading station 16 .

[0206] The position detection device refers to a structure in the winding device 100 for detecting whether the electrode assembly 200 is present on the winding needle 11 in the unloading station 16. The position sensor device may include a Hall sensor, a magnetic encoder, a laser ranging sensor or other devices; the position detection device is arranged on one side of the turret 12. The position detection device can be arranged on one side of the turret 12 through a bracket or other structure. The position detection device can be arranged on one side of the unloading station 16 or at other positions.

[0207] The position detection device is used to detect whether there is an electrode assembly 200 on the winding needle 11 in the unloading station 16. When there is an electrode assembly 200 on the winding needle 11 in the unloading station 16, the position detection device can send a start signal to the unloading mechanism 20 so that the unloading mechanism 20 can enter the unloading station 16 and remove the electrode assembly 200 from the winding needle 11; when there is no electrode assembly 200 on the winding needle 11 in the unloading station 16, the position detection device may not send a signal to the unloading mechanism 20, or send a waiting signal, so that the unloading mechanism 20 is in a waiting state and does not enter the unloading station 16.

[0208] In the case where the workstations include a blanking station 16 , only one position detection device may be provided, and the position detection device is used to detect whether there is an electrode assembly 200 on the winding needle 11 in the blanking station 16 .

[0209] When the workstations include two or more unloading stations 16, multiple position detection devices can be set up, and the position detection devices can be made to correspond one-to-one to the unloading stations 16. At this time, each position detection device can independently control the corresponding unloading sub-mechanism to enter the corresponding unloading station 16; or only one position detection device can be set up. At this time, the position detection device is located on the side of the last unloading station 16 along the movement direction of the turret 12, and is used to detect whether there is an electrode assembly 200 on the winding needle 11 in the unloading station 16. When there is an electrode assembly 200 in the unloading station 16, there are also electrode assemblies 200 in other unloading stations 16. At this time, each sub-unloading mechanism 20 corresponding to each unloading station 16 can enter the corresponding unloading station 16 to pick up materials.

[0210] In this embodiment, a position detection device is provided to detect whether there is an electrode assembly 200 on the winding needle 11 in the unloading station 16, thereby facilitating the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b to clamp the electrode assembly 200 from the corresponding unloading station 16 according to the detection signal.

[0211] refer to Figures 14 to 16 In some embodiments, the first pressing plate 31 has at least a first position and a second position arranged along the movement direction of the first pressing plate 31, and the distance between the first pressing plate 31 and the second pressing plate 32 when the first pressing plate 31 is in the first position is greater than the distance between the first pressing plate 31 and the second pressing plate 32 when the first pressing plate 31 is in the second position, and the distance between the first pressing plate 31 and the second pressing plate 32 when the first pressing plate 31 is in the first position is less than or equal to the thickness of the electrode assembly 200.

[0212] The first position and the second position are different positions of the first pressing plate 31 relative to the second pressing plate 32 . Since the first position and the second position are both positions that the first pressing plate 31 can reach, the first position and the second position are arranged along the movement direction of the first pressing plate 31 .

[0213] It is understandable that the first pressing plate 31 may have other positions relative to the second pressing plate 32 in addition to the first position and the second position. For example, the first pressing plate 31 also has an initial position. When the first pressing plate 31 is at the initial position, the distance between the first pressing plate 31 and the second pressing plate 32 is the farthest, and the first position is between the initial position and the second position.

[0214] The first pressure plate 31 can move from the first position to the second position and approach the second pressure plate 32, that is, the first pressure plate 31 will pass through the first position and the second position in sequence during the process of moving toward the second pressure plate 32; thus, the distance between the first pressure plate 31 at the first position and the second pressure plate 32 is greater than the distance between the first pressure plate 31 at the second position and the second pressure plate 32.

[0215] The thickness of the electrode assembly 200 is the size of the electrode assembly 200 in the moving direction of the first pressing plate 31. At this time, the two first clamping needles 212 are in a state of being away from each other, and the electrode assembly 200 is in a state of being stretched. Fig.14 , the thickness of the electrode assembly 200 is Fig.14 The dimension shown in h; it can be understood that the thickness of the electrode assembly 200 is the thickness of the electrode assembly 200 on the unloading mechanism 20, and is also the thickness of the electrode assembly 200 when it is transferred to the shaping mechanism 30.

[0216] The distance between the first pressing plate 31 and the second pressing plate 32 is the distance between the first pressing plate 31 and the second pressing plate 32 in the first direction. Fig.15 , when the first pressing plate 31 is in the first position, the distance between the first pressing plate 31 and the second pressing plate 32 is Fig.15 The dimensions shown in H.

[0217] When the first pressing plate 31 is located at the first position, the distance between the first pressing plate 31 and the second pressing plate 32 is less than or equal to the thickness of the electrode assembly 200; the distance between the first pressing plate 31 and the second pressing plate 32 may be equal to the thickness of the electrode assembly 200 (e.g. Fig.15 ), at this time, there is no force between the first pressing plate 31 and the electrode assembly 200, but the loose electrode assembly 200 will apply a force to the first pressing plate 31. At this time, the first pressing plate 31 can play an effect of suppressing the loosening of the electrode assembly 200; the distance between the first pressing plate 31 and the second pressing plate 32 can also be smaller than the thickness of the electrode assembly 200. At this time, the first pressing plate 31 is pressed on the electrode assembly 200, and there is a force between the first pressing plate 31 and the electrode assembly 200 to suppress the loosening of the electrode assembly 200.

[0218] After the first pressing plate 31 is located at the first position, the two first clamping pins 212 of the clamping pin assembly 21 move towards each other and gradually lose contact with the electrode assembly 200, and the first clamping pins 212 no longer prop up the electrode assembly 200. At this time, the electrode assembly 200 tends to become loose, which can easily cause the electrode assembly 200 to shrink inward and loosen outward, and increase the thickness of the electrode assembly 200. However, since the first pressing plate 31 is located at the first position, the loose and thickened electrode assembly 200 will be pressed against the first pressing plate 31, and there will be a force between the first pressing plate 31. At this time, the first pressing plate 31 can suppress the loosening of the electrode assembly 200, thereby making it difficult for the electrode assembly 200 to disperse, and facilitating the first clamping pin 212 to escape from the electrode assembly 200.

[0219] When the first pressure plate 31 is located in the first position, the first pressure plate 31 can not only suppress the deformation of the electrode assembly 200, but also reduce the damage of the first pressure plate 31 to the part of the electrode assembly 200 between the first pressure plate 31 and the first clamping needle 212; accordingly, when the distance between the first pressure plate 31 and the second pressure plate 32 is less than the thickness of the electrode assembly 200, the difference between the distance between the first pressure plate 31 and the second pressure plate 32 and the thickness of the electrode assembly 200 should not be too large, so as to reduce the resistance of the first clamping needle 212 to withdraw from the inner circle of the electrode assembly 200, and also reduce the damage to the electrode assembly 200.

[0220] After the first clamping needle 212 is disengaged, the first pressing plate 31 can continue to approach the second pressing plate 32 and shape the electrode assembly 200. When the first pressing plate 31 moves to the second position, the distance between the first pressing plate 31 and the second pressing plate 32 is short, and the shaping mechanism 30 completes the shaping process of the electrode assembly 200.

[0221] The action process of the shaping mechanism 30 is as follows: the first pressing plate 31 is located at the initial position, at this time, the unloading mechanism 20 moves the electrode assembly 200 to the second pressing plate 32 of the shaping mechanism 30; then, the first pressing plate 31 moves in the direction close to the second pressing plate 32 until it stops moving after moving to the first position; after the first pressing plate 31 is located at the first position, the unloading mechanism 20 disengages from and exits the electrode assembly 200; then, the first pressing plate 31 continues to move and moves to the second position to shape the electrode assembly 200.

[0222] In this embodiment, the first pressing plate 31 has at least a first position and a second position. When the first pressing plate 31 is in the first position, the spacing between the first pressing plate 31 and the second pressing plate 32 is less than or equal to the thickness of the electrode assembly 200, so that the deformation of the electrode assembly 200 can be limited by the first pressing plate 31 and the second pressing plate 32, so as to reduce the looseness of the electrode assembly 200 that may occur during the withdrawal of the first clamping needle 212; at the same time, the first pressing plate 31 and the second pressing plate 32 can also play a role in fixing the electrode assembly 200, so as to facilitate the withdrawal of the first clamping needle 212 from the electrode assembly 200, and it is not easy for the electrode assembly 200 to move synchronously with the movement of the first clamping needle 212.

[0223] refer to Fig.11 In some embodiments, the second pressing plate 32 includes a load-bearing member 321 and a conveyor belt 322. The load-bearing member 321 is arranged opposite to the first pressing plate 31 to form a shaping space. At least a portion of the conveyor belt 322 extends to the side of the load-bearing member 321 facing the first pressing plate 31. The conveyor belt 322 is configured to convey the shaped electrode assembly 200 to the next process.

[0224] The load-bearing member 321 refers to the portion of the second pressing plate 32 used to provide support for the electrode assembly 200. The load-bearing member 321 can provide support for the electrode assembly 200 to cooperate with the first pressing plate 31 to press and shape the electrode assembly 200; the load-bearing member 321 can be a plate-like structure, or a block-like structure or a structural member of other shapes; the material of the load-bearing member 321 can include metal, plastic or other materials.

[0225] The conveyor belt 322 refers to a structure in the second pressure plate 32 for conveying the electrode assembly 200 to other equipment, that is, part of the conveyor belt 322 can be located under the first pressure plate 31, and other parts of the conveyor belt 322 can extend to other equipment. The material of the conveyor belt 322 can include metal, plastic or other materials.

[0226] During the shaping process of the electrode assembly 200, the electrode assembly 200 should be placed on the conveyor belt 322 so that the conveyor belt 322 can directly convey the electrode assembly 200 to other equipment after the shaping of the electrode assembly 200 is completed; accordingly, the load-bearing member 321 is located under part of the conveyor belt 322 to provide support for the conveyor belt 322. During the shaping process of the electrode assembly 200, the electrode assembly 200 is located on the conveyor belt 322 and above the load-bearing member 321.

[0227] For example, when the conveyor belt 322 is a closed ring structure, the load-bearing member 321 is located at the inner circle of the conveyor belt 322 and below the portion of the conveyor belt 322 facing the first pressing plate 31; after the electrode assembly 200 is placed in the shaping space, the electrode assembly 200 is located on the conveyor belt 322 and above the load-bearing member 321; at this time, the first pressing plate 31 moves in a direction close to the load-bearing member 321 to press both the electrode assembly 200 and a portion of the conveyor belt 322 on the load-bearing member 321, thereby completing the shaping of the electrode assembly 200; thereafter, the first pressing plate 31 moves in a direction away from the load-bearing member 321, and the conveyor belt 322 moves to transport the electrode assembly 200 to other equipment, thereby completing a shaping process of the electrode assembly 200.

[0228] The embodiment of the present application provides some specific structures of the second pressing plate 32 , and a load-bearing member 321 is provided to cooperate with the first pressing plate 31 to shape the electrode assembly 200 ; a conveyor belt 322 is provided to convey the shaped electrode assembly 200 to the next process.

[0229] In some embodiments, the winding device 100 includes a winding mechanism 10 , a feeding mechanism 20 and a shaping mechanism 30 ; the two feeding mechanisms 20 can alternately move to one side of the winding needle 11 to alternately remove the electrode assembly 200 on the winding needle 11 and transport it to the shaping mechanism 30 .

[0230] The winding equipment 100 includes a turret 12 and five winding needles 11 arranged on the turret 12. The turret 12 can drive the winding needles 11 to move and place the winding needles 11 in each work station. The work stations include a winding station 13, a finishing station 14, a gluing station 15, a material unloading station 16 and a waiting station 17 which are arranged in sequence along the movement direction of the winding needle 11.

[0231] The blanking mechanism 20 includes a first sub-blanking mechanism 20a and a second sub-blanking mechanism 20b, and the first sub-blanking mechanism 20a and the second sub-blanking mechanism 20b both include a clamping needle assembly 21 and a transfer assembly 22 for driving the clamping needle assembly 21 to move; the clamping needle assembly 21 includes a base plate 211, on which are provided two first clamping needles 212 that can approach or move away from each other, and along the moving direction of the two first clamping needles 212, two second clamping needles 213 are respectively provided on the outer sides of the two first clamping needles 212, and the two second clamping needles 213 are fixedly connected to the base plate 211.

[0232] The transfer assembly 22 includes a first sub-transfer assembly 221 moving along a first direction, a second sub-transfer assembly 222 moving along a second direction, and a third sub-transfer assembly 223 moving along a third direction. The first sub-transfer assembly 221, the second sub-transfer assembly 222, and the third sub-transfer assembly 223 are capable of driving the needle clamping assembly 21 to move from the unloading station 16 to the shaping mechanism 30 and enter the shaping space to transfer the electrode assembly 200 from the unloading station 16 to the shaping space.

[0233] The first sub-unloading mechanism 20 a and the second sub-unloading mechanism 20 b can alternately and sequentially pick up the electrode assembly 200 from the unloading station 16 .

[0234] The shaping mechanism 30 includes a frame 33 and a first pressing plate 31 and a second pressing plate 32 arranged on the frame 33. The second pressing plate 32 is fixed relative to the frame 33. The first pressing plate 31 can move close to or away from the second pressing plate 32. When the first pressing plate 31 moves close to the second pressing plate 32, it can move to a first position. Then, the first pressing plate 31 continues to move and can move to a second position.

[0235] In the process of the clamping needle assembly 21 removing the electrode assembly 200 from the winding needle 11, the two first clamping needles 212 enter the two unloading troughs 112 respectively, and then the two first clamping needles 212 move away from each other and abut against the electrode assembly 200; then the two first clamping needles 212 move in the direction away from the winding needle 11 to drive the electrode assembly 200 to slip off the winding needle 11, thereby removing the electrode assembly 200 from the winding needle 11.

[0236] During the process of the unloading mechanism 20 transferring the electrode assembly 200, the two first clamping needles 212 are always in an open state to reduce the looseness of the electrode assembly 200; the transfer assembly 22 drives the bracket to move to one side of the shaping mechanism 30, and the substrate 211 moves to the same height as the shaping mechanism 30, and the first clamping needle 212 places the electrode assembly 200 between the first pressing plate 31 and the second pressing plate 32.

[0237] During the shaping process of the shaping mechanism 30, the first pressing plate 31 first moves close to the second pressing plate 32 and moves to the first position, and then the two first clamping needles 212 approach each other and withdraw from the electrode assembly 200; then the first pressing plate 31 continues to approach the second pressing plate 32 and moves to the second position to shape the electrode assembly 200.

[0238] Second, reference Fig.17 , an embodiment of the present application also provides a winding method, which is applied to the winding device 100 provided in some embodiments of the first aspect.

[0239] The winding method comprises the following steps: S410 : The substrate is wound by the winding mechanism 10 to obtain the electrode assembly 200 .

[0240] In this step, the winding mechanism 10 is the winding mechanism 10 in the winding device 100 provided in some embodiments of the first aspect, that is, the structure in the winding device 100 for winding the isolation membrane and the pole piece into the electrode assembly 200.

[0241] The substrate refers to the positive electrode sheet, the negative electrode sheet and the separator. The electrode assembly 200 is mainly formed by winding the positive electrode sheet and the negative electrode sheet, and a separator is provided between the positive electrode sheet and the negative electrode sheet.

[0242] The winding mechanism 10 can wind the separator and the electrode sheet into a laminated composite structure. The winding mechanism 10 can also obtain the electrode assembly 200 by finishing the wound composite structure. The electrode assembly 200 is the wound electrode assembly 200. S420 : The electrode assembly 200 is clamped and unloaded by the first unloading mechanism 20 a and the second unloading mechanism 20 b , and the electrode assembly 200 is transferred to the shaping mechanism 30 .

[0243] In this step, the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b are the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b in the winding device 100 provided in some embodiments of the first aspect, that is, the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b are both used to remove the wound electrode assembly 200 from the winding mechanism 10.

[0244] According to the structure of the winding mechanism 10, the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b can alternately remove the electrode assembly 200 from the winding mechanism 10 in sequence and transfer the electrode assembly 200 to the shaping mechanism 30; the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b can also operate simultaneously to take the material and transfer the electrode assembly 200 to the shaping mechanism 30.

[0245] After the first sub-unloading mechanism 20a or the second sub-unloading mechanism 20b removes the electrode assembly 200 from the winding needle 11, the electrode assembly 200 will be transported to the shaping mechanism 30 for shaping processing; during this process, the electrode assembly 200 can be transported by a conveyor belt 322 or other conveying mechanisms, or the first sub-unloading mechanism 20a or the second sub-unloading mechanism 20b can directly transport the electrode assembly 200 to the shaping mechanism 30.

[0246] S430: The electrode assembly 200 is shaped by the shaping mechanism 30 to obtain a shaped electrode assembly 200 .

[0247] In this step, the shaping mechanism 30 is the shaping mechanism 30 in the winding device 100 provided in some embodiments of the first aspect, that is, the structure in the winding device 100 for shaping the electrode assembly 200 after winding. The shaping of the electrode assembly 200 refers to a processing procedure of providing a certain pressure through the shaping mechanism 30 to shape the electrode assembly 200.

[0248] In this embodiment, a first sub-unloading mechanism 20a and a second sub-unloading mechanism 20b are provided so that each unloading mechanism 20 can remove the electrode assembly 200 on the winding mechanism 10 and perform subsequent shaping processing; in this arrangement, the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b can take materials simultaneously or alternately, thereby reducing the time that the winding mechanism 10 waits for unloading, improving the efficiency of the unloading process, and thus being able to improve the efficiency of the entire processing process.

[0249] In some embodiments, the step of winding the substrate by the winding mechanism 10 to obtain the electrode assembly 200, that is, the step S410, includes: S411: The turret 12 rotates and drives the winding needle 11 to move to each station, and the substrate is wound by the winding needle 11 to obtain the electrode assembly 200.

[0250] In this step, the turret 12 is the turret 12 in the winding device 100 provided in some embodiments of the first aspect, that is, the structure in the winding mechanism 10 that provides a fixed foundation for the winding needle 11 or other structures.

[0251] The winding needle 11 is the winding needle 11 in the winding device 100 provided in some embodiments of the first aspect, that is, the structure in the winding mechanism 10 for winding the isolation film and the pole piece.

[0252] The winding needle 11 is arranged on the turret 12 and can rotate relative to the turret 12 to facilitate winding of the composite structure; the turret 12 can drive the winding needle 11 to move, and drive the winding needle 11 to move to different workstations; wherein, the workstation refers to the position to which the winding needle 11 can move under the drive of the turret 12, and different workstations can correspond to different equipment to process the winding needle 11 in the corresponding workstation and the electrode assembly 200 on the winding needle 11.

[0253] In the step of clamping and unloading the electrode assembly 200 by the first unloading mechanism 20a and the second unloading mechanism 20b, that is, in the step S420, the following steps are included: The electrode assembly 200 on the winding needle 11 of the unloading station 16 is clamped and unloaded by the first unloading mechanism 20 a and the second unloading mechanism 20 b , and the electrode assembly 200 is transferred to the shaping mechanism 30 .

[0254] In this step, the unloading station 16 is the unloading station 16 in the winding device 100 provided in some embodiments of the first aspect, that is, the station used for unloading among the stations, the winding needle 11 can move to the unloading station 16, the electrode assembly 200 on the winding needle 11 can be removed in the unloading station 16, the first sub-unloading mechanism 20a or the second sub-unloading mechanism 20b can move to the unloading station 16 and remove the wound electrode assembly 200 from the unloading station 16.

[0255] In this embodiment, a turret 12 and a plurality of workstations are provided. The turret 12 can drive the winding needle 11 to move to each workstation, and different processes of the electrode assembly 200 can be performed at different workstations respectively. This arrangement can reduce the waiting time of the turret 12 at the same position, thereby improving the efficiency of the winding mechanism 10. The electrode assembly 200 is directly transferred to the shaping mechanism 30 through the unloading mechanism 20 to reduce the risk of the electrode assembly 200 becoming loose or wrinkled during transportation.

[0256] refer to Fig.17 In some embodiments, after the step of transferring the electrode assembly 200 to the shaping mechanism 30 by the first sub-feeding mechanism 20a and the second sub-feeding mechanism 20b, that is, after the step S420, the winding method further includes: S440: The first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b are separated from the shaping mechanism 30 and reset.

[0257] In this step, the resetting of the first sub-material unloading mechanism 20a and the second sub-material unloading mechanism 20b means that the first sub-material unloading mechanism 20a and the second sub-material unloading mechanism 20b return to one side of the turret 12 so as to enter the unloading station 16 to take materials.

[0258] After the first sub-unloading mechanism 20a or the second sub-unloading mechanism 20b transfers the electrode assembly 200 to the shaping space, it does not need to wait for the shaping of the electrode assembly 200 to be completed, but can directly return to the side of the turret 12 to reset; accordingly, after S420, steps S440 and S430 can be performed simultaneously.

[0259] In this embodiment, the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b are reset after being separated from the shaping mechanism 30, so as to facilitate the reciprocating motion of the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b between the unloading station 16 and the shaping mechanism 30.

[0260] In some embodiments, the winding mechanism 10 includes a material unloading station 16 , and both the first sub-material unloading mechanism 20 a and the second sub-material unloading mechanism 20 b can remove the wound electrode assembly 200 from the material unloading station 16 .

[0261] The step of clamping and unloading the electrode assembly 200 on the winding needle 11 of the unloading station 16 by the first unloading mechanism 20a and the second unloading mechanism 20b includes: S420a: The electrode assembly 200 on the winding needle 11 of the blanking station 16 is alternately clamped and blanked by the first sub-blank mechanism 20a and the second sub-blank mechanism 20b, and the following conditions are satisfied: t / 2<T.

[0262] In this step, t is the time taken for the first sub-feeding mechanism 20a and / or the second sub-feeding mechanism 20b to complete the clamping and unloading of the electrode assembly 200 and to reset it, that is, t is the time required for the first sub-feeding mechanism 20a or the second sub-feeding mechanism 20b to move for one cycle. During the time period of t, the actions of the first sub-feeding mechanism 20a and / or the second sub-feeding mechanism 20b include removing the electrode assembly 200 from the winding needle 11, transporting the electrode assembly 200 to the shaping mechanism 30, placing the electrode assembly 200 in the shaping space, resetting, and the like.

[0263] T is the total time required for the winding needle 11 to stay in one workstation and move to the next workstation, and is also the duration of one action cycle of the turret 12. The time period of T starts when the winding needle 11 enters one workstation, and the time period of T ends when the winding needle 11 enters the next adjacent workstation. That is, the time period of T includes the time of entering and staying in a workstation, the time of the winding needle 11 leaving the workstation and moving to the next adjacent workstation, etc.

[0264] For example, when the winding mechanism 10 includes five workstations, the time duration for the turret 12 to rotate through a complete cycle is 5T.

[0265] t / 2<T, that is, half of the duration of one movement cycle of the first sub-unloading mechanism 20a or the second sub-unloading mechanism 20b is less than or equal to the duration of one movement cycle of the turret 12; in the case where the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b take materials from the unloading station 16 alternately, when the winding needle 11 carries the electrode assembly 200 into the unloading station 16, this arrangement can ensure that there is always the first sub-unloading mechanism 20a and / or the second sub-unloading mechanism 20b next to the unloading station 16, so that the first sub-unloading mechanism 20a And / or the second sub-unloading mechanism 20b can act in time and take materials from the unloading station 16, thereby reducing the negative impact of the unloading action on the rotation of the turret 12, so that the turret 12 can always act with a stable period and frequency. The action period and frequency of the turret 12 will also affect other actions such as compounding, winding, and cutting of the electrode assembly 200, that is, the action period and frequency of the turret 12 will affect the action of the entire winding device 100. Therefore, this setting can reduce the negative impact of the unloading action on the entire winding device 100.

[0266] In the present embodiment, the winding mechanism 10 includes a material unloading position, and the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b are made to take materials from the material unloading position 16 alternately, thereby reducing the time for the turret 12 to wait for unloading and improving the efficiency of the unloading process; the action time of the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b are set so that the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b can take materials from the corresponding material unloading position 16 in time, thereby reducing the negative impact of the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b on the action cycle of the turret 12.

[0267] In some embodiments, the winding mechanism 10 includes two unloading stations 16, and the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b can respectively remove the wound electrode assembly 200 from different unloading stations 16, that is, the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b can respectively correspond to different unloading stations 16.

[0268] The step of clamping and unloading the electrode assembly 200 on the winding needle 11 of the unloading station 16 by the first unloading mechanism 20a and the second unloading mechanism 20b includes: S420b: The electrode assembly 200 on the winding needle 11 located at different unloading stations 16 is clamped and unloaded by the first unloading mechanism 20a and the second unloading mechanism 20b, respectively, and t<2T is satisfied.

[0269] In this step, the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b can simultaneously remove the wound electrode assembly 200 from the corresponding different unloading stations 16, and the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b can also alternately remove the wound electrode assembly 200 from the corresponding different unloading stations 16.

[0270] In this step, t is the time taken for the first sub-feeding mechanism 20a and / or the second sub-feeding mechanism 20b to complete the clamping and unloading of the electrode assembly 200 and to reset it, that is, t is the time required for the first sub-feeding mechanism 20a or the second sub-feeding mechanism 20b to move for one cycle. During the time period of t, the actions of the first sub-feeding mechanism 20a and / or the second sub-feeding mechanism 20b include removing the electrode assembly 200 from the winding needle 11, transporting the electrode assembly 200 to the shaping mechanism 30, placing the electrode assembly 200 in the shaping space, resetting, and the like.

[0271] T is the total time required for the winding needle 11 to stay in one workstation and move to the next workstation, and is also the duration of one action cycle of the turret 12. The time period of T starts when the winding needle 11 enters one workstation, and the time period of T ends when the winding needle 11 enters the next adjacent workstation. That is, the time period of T includes the time of entering and staying in a workstation, the time of the winding needle 11 leaving the workstation and moving to the next adjacent workstation, etc.

[0272] For example, when the winding mechanism 10 includes five workstations, the time duration for the turret 12 to rotate through a complete cycle is 5T.

[0273] t<2T, that is, the duration of one movement cycle of the first sub-unloading mechanism 20a or the second sub-unloading mechanism 20b is less than or equal to the duration of two movement cycles of the turret 12; because the winding mechanism 10 includes two unloading stations 16, when there are winding needles 11 carrying electrode assemblies 200 in the two unloading stations 16, this setting can enable the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b to take materials from the corresponding unloading station 16 synchronously or alternately, and when there is only one or no winding needle 11 carrying the electrode assembly 200 in the two unloading stations 16, the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b do not enter the corresponding unloading station 16.

[0274] Under this setting, the maximum duration of an action cycle of the first sub-feeding mechanism 20a and the second sub-feeding mechanism 20b can be 2T, which reduces the duration requirement of the action cycle of the first sub-feeding mechanism 20a and the second sub-feeding mechanism 20b of the winding equipment 100, and also enables the first sub-feeding mechanism 20a and the second sub-feeding mechanism 20b to better complete each action in an action cycle.

[0275] It can be understood that step S420a and step S420b respectively correspond to different working conditions in which the winding mechanism 10 includes one unloading station 16 and two unloading stations 16, and there is no time relationship between the two steps.

[0276] In this embodiment, the winding mechanism 10 includes at least two unloading positions, and the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b are respectively opposite to different unloading positions, so that the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b can take materials from the winding mechanism 10 simultaneously or alternately, which can not only increase the number of materials taken and unloaded at a single time, but also reduce the waiting time of the winding mechanism 10 for unloading, thereby improving the efficiency of the unloading process; the action time of the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b is set, so that the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b can take materials from the corresponding unloading station 16 in time, thereby reducing the negative impact of the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b on the action cycle of the turret 12.

[0277] In some embodiments, in the step of clamping and unloading the electrode assembly 200 on the winding needle 11 located at different unloading stations 16 by the first unloading mechanism 20a and the second unloading mechanism 20b, that is, in the step S420b, the following steps are included: The first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b respectively clamp and unload the electrode assembly 200 on the winding needle 11 of different unloading stations 16 at the same time.

[0278] In this step, the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b simultaneously remove the wound electrode assembly 200 from the corresponding different unloading stations 16, that is, the sub-action processes of the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b are synchronized or approximately synchronized.

[0279] For example, taking the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b directly transporting the electrode assembly 200 to the shaping mechanism 30 as an example, an action cycle of the first sub-unloading mechanism 20a or the second sub-unloading mechanism 20b includes: a first action process: the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b synchronously remove the electrode assembly 200 from the corresponding unloading station 16; a second action process: the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b synchronously carry the corresponding electrode assembly 200 to one side of the shaping mechanism 30, and At the same time, a wound electrode assembly 200 is present in one unloading station 16; the third action process: the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b synchronously place the corresponding electrode assembly 200 in the shaping space; the fourth action process: the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b synchronously return to the side of the corresponding unloading station 16, and at the same time, the wound electrode assembly 200 is present in the other unloading station 16, that is, the two unloading stations 16 both have wound electrode assemblies 200; this cycle is repeated.

[0280] In this embodiment, the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b can simultaneously take materials from the corresponding unloading station 16, which can not only increase the number of materials unloaded at a time, but also reduce the time the turret 12 waits for unloading, thereby improving the efficiency of the unloading process.

[0281] In some embodiments, before the step of simultaneously clamping and unloading the electrode assembly 200 on the winding needle 11 at different unloading stations 16 by the first unloading mechanism 20a and the second unloading mechanism 20b, that is, before S420b, the following steps are also included: The position detection device detects whether the electrode assembly 200 is present on the winding needle 11 .

[0282] When there are electrode assemblies 200 on the winding needles 11 of the two unloading stations 16, the first unloading mechanism 20a and the second unloading mechanism 20b respectively clamp and unload the electrode assemblies 200 on the winding needles 11 of different unloading stations 16, and transfer the electrode assemblies 200 to the shaping mechanism 30; When the electrode assemblies 200 are not evenly present on the winding needles 11 of the two unloading stations 16 , the first unloading sub-mechanism 20 a and the second unloading sub-mechanism 20 b are prevented from entering the corresponding unloading stations 16 .

[0283] In this step, the position detection device is the position detection device in the winding device 100 provided in some embodiments of the first aspect, that is, the structure in the winding device 100 for detecting whether the electrode assembly 200 exists on the winding needle 11 in the unloading station 16; the position detection device can be arranged on one side of the unloading station 16, or at other positions.

[0284] When there is an electrode assembly 200 on the winding needle 11 in the unloading station 16, the position detection device can send a start signal to the unloading mechanism 20 so that the unloading mechanism 20 can enter the unloading station 16 and remove the electrode assembly 200 from the winding needle 11; when there is no electrode assembly 200 on the winding needle 11 in the unloading station 16, the position detection device may not send a signal to the unloading mechanism 20, or send a waiting signal so that the unloading mechanism 20 is in a waiting state and does not enter the unloading station 16, so as to prevent the unloading mechanism 20 from entering the corresponding unloading station 16.

[0285] In the case where the winding mechanism 10 includes two unloading stations 16, two position detection devices can be provided, and the position detection devices correspond to the unloading stations 16 one by one. At this time, each position detection device can independently control the corresponding unloading sub-mechanism to enter the corresponding unloading station 16; When the winding mechanism 10 includes two unloading stations 16, only one position detection device may be provided. In this case, the position detection device is located on the side of the last unloading station 16 along the movement direction of the turret 12, and is used to detect whether there is an electrode assembly 200 on the winding needle 11 in the unloading station 16. When there is an electrode assembly 200 in the unloading station 16, there are also electrode assemblies 200 in other unloading stations 16. At this time, each sub-unloading mechanism 20 corresponding to each unloading station 16 can enter the corresponding unloading station 16 to pick up materials.

[0286] In this embodiment, a position detection device is provided to control the operation states of the first and second sub-unloading mechanisms 20a, 20b, thereby reducing mutual interference among the operations of the first and second sub-unloading mechanisms 20a, 20b and the turret 12.

[0287] In some embodiments, the winding apparatus 100 includes at least two shaping mechanisms 30 .

[0288] The number of the shaping mechanisms 30 is at least two, that is, the number of the shaping mechanisms 30 can be two, or three or more.

[0289] In the step of shaping the electrode assembly 200 by the shaping mechanism 30, that is, in the step S430, the following steps are included: The electrode assembly 200 removed by the first sub-unloading mechanism 20a is shaped by at least one shaping mechanism 30, and the electrode assembly 200 removed by the second sub-unloading mechanism 20b is shaped by at least one shaping mechanism 30.

[0290] In this step, the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b are respectively opposite to different shaping mechanisms 30, that is, the electrode assemblies 200 removed by the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b will be transported to the corresponding shaping mechanisms 30 respectively.

[0291] In this embodiment, the number of shaping mechanisms 30 is at least two, and the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b correspond to different shaping mechanisms 30 respectively, so as to reduce the influence of the shaping time of the shaping mechanism 30 on the unloading process, thereby better improving the efficiency of the unloading process.

[0292] refer to Fig.18 In some embodiments, the step of clamping and unloading the electrode assembly 200 by the first unloading mechanism 20a and the second unloading mechanism 20b, that is, the step S420, includes: S421: The electrode assembly 200 on the winding mechanism 10 is clamped by the clamping needle assembly 21 .

[0293] In this step, the clamping needle assembly 21 is the clamping needle assembly 21 in the winding device 100 provided in some embodiments of the first aspect, that is, the structure used to remove the electrode assembly 200 from the winding needle 11 in the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b. The clamping needle assembly 21 can also be used to place the electrode assembly 200 in the shaping mechanism 30.

[0294] In step S420, the clamping needle assembly 21 can enter the corresponding unloading station 16 and clamp the electrode assembly 200 from the winding needle 11 to the clamping needle assembly 21. In the step of transferring the electrode assembly 200 to the shaping mechanism 30 by the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b, that is, in the step S430, the following steps are included: S431: The transfer assembly 22 drives the clamping needle assembly 21 to move from the winding mechanism 10 to the shaping mechanism 30.

[0295] In this step, the transfer component 22 is the transfer component 22 in the winding device 100 provided in some embodiments of the first aspect, that is, the structure in the first sub-unloading mechanism 20a and the second sub-unloading mechanism 20b for driving the clamping needle component 21 to move.

[0296] In step S431, after the clamping needle assembly 21 clamps the electrode assembly 200, the transfer assembly 22 can drive the clamping needle assembly 21 to move, so that the clamping needle assembly can carry the electrode assembly 200 out of the corresponding unloading station 16, and move the clamping needle assembly 21 carrying the electrode assembly 200 into the shaping space of the shaping mechanism 30.

[0297] In step S431, the transfer of the electrode assembly 200 from the winding needle 11 to the shaping mechanism 30 is achieved through the clamping needle assembly 21 and the transfer assembly 22. The electrode assembly 200 is always clamped by the clamping needle assembly 21, thereby reducing the risk of the electrode assembly 200 becoming loose or wrinkled during transportation.

[0298] In this embodiment, the motor assembly is clamped by the clamping needle assembly 21 from the winding needle 11, and the clamping needle assembly 21 is driven by the transfer assembly 22 to move from one side of the winding needle 11 to the side of the shaping mechanism 30, so that the unloading mechanism 20 can directly transfer the electrode assembly 200 to the shaping mechanism 30 without transporting the electrode assembly 200 through the conveyor belt 322.

[0299] refer to Fig.19 In some embodiments, the step of clamping the electrode assembly 200 on the winding mechanism 10 by the clamping needle assembly 21, that is, the step S421, includes: S4211: The first clamping needle 212 of the clamping needle assembly 21 is driven by the first sub-transporting assembly 221 to enter the unloading slot 112 of the winding needle 11.

[0300] In this step, the first sub-transfer component 221 is the first sub-transfer component 221 in the winding device 100 provided in some embodiments of the first aspect, that is, the structure in the corresponding first sub-unloading mechanism 20a or the second sub-unloading mechanism 20b for driving the clamping needle component 21 to move.

[0301] The first clamping needle 212 is the first clamping needle 212 in the winding device 100 provided in some embodiments of the first aspect, that is, the structure in the clamping needle assembly 21 for removing the electrode assembly 200 from the winding needle 11.

[0302] The material discharge trough 112 is the material discharge trough 112 in the winding device 100 provided in some embodiments of the first aspect, that is, the trough structure on the winding needle 11 for accommodating the material picking structure in the material discharge mechanism 20; the material discharge trough 112 is opened on the peripheral side surface of the needle body 111, and at least one end of the material discharge trough 112 is connected to the space outside the needle body 111. The needle body 111 refers to the structure in the winding needle 11 that winds the electrode assembly 200 and contacts the electrode assembly 200.

[0303] In this step, the first sub-transfer assembly 221 can drive the clamping needle assembly 21 to enter the unloading station 16 and move in the direction close to the winding needle 11, so that the first clamping needle 212 enters the unloading trough 112; when the first clamping needle 212 enters the unloading trough 112, the first clamping needle 212 is located within the inner circle of the electrode assembly 200.

[0304] S4212: The first clamping needle 212 is driven by the clamping needle moving assembly to approach the second clamping needle 213 of the corresponding clamping needle assembly 21 and abut against the electrode assembly 200 .

[0305] In this step, the second clamping needle 213 is the second clamping needle 213 in the winding device 100 provided in some embodiments of the first aspect, that is, the structure in the clamping needle assembly 21 for assisting the first clamping needle 212 in fixing the electrode assembly 200 .

[0306] The clamping needle moving assembly is the clamping needle moving assembly in the winding device 100 provided in some embodiments of the first aspect, that is, the structure in the clamping needle assembly 21 for driving the first clamping needle 212 to move. The clamping needle moving assembly can drive the first clamping needle 212 to approach or move away from the corresponding second clamping needle 213. The movement of the first clamping needle 212 approaching the second clamping needle 213 can clamp the battery assembly between the first clamping needle 212 and the second clamping needle 213. At the same time, the movement of the first clamping needle 212 approaching the second clamping needle 213 can also open the electrode assembly 200, so that at least part of the electrode assembly 200 can be separated from the corresponding winding needle 11, thereby reducing the friction between the electrode assembly 200 and the winding needle 11, and facilitating the electrode assembly 200 to be separated from the winding needle 11; the first clamping needle 212 moving away from the second clamping needle 213 can release the electrode assembly 200.

[0307] When the first clamping needle 212 moves toward the winding needle 11 , the second clamping needle 213 also moves synchronously with the first clamping needle 212 ; when the first clamping needle 212 enters the discharge chute 112 , the second clamping needle 213 is located on the outside of the electrode assembly 200 .

[0308] The first clamping needle 212 moves close to the corresponding second clamping needle 213, that is, the first clamping needle 212 can move out of the discharge trough 112; the first clamping needle 212 is pressed against the electrode assembly 200 and can clamp the electrode assembly 200 between the first clamping needle 212 and the second clamping needle 213. At this time, at least part of the electrode assembly 200 can be detached from the needle body 111, so that the clamping needle assembly 21 can remove the electrode assembly 200 from the needle body 111.

[0309] S4213: The first sub-transport assembly 221 drives the clamping needle assembly 21 to move so as to drive the electrode assembly 200 to separate from the winding needle 11.

[0310] In this step, the first sub-transport assembly 221 drives the clamping needle assembly 21 to move away from the winding needle 11, and can make the electrode assembly 200 detach from the needle body 111. At this time, the electrode assembly 200 is carried on the clamping needle assembly 21 and is stretched open by the clamping needle assembly 21, thereby reducing the inward collapse and outward loosening of the electrode assembly 200 and reducing the risk of wrinkling the electrode assembly 200.

[0311] This embodiment provides some steps for the clamping needle assembly 21 to clamp the electrode assembly 200 , so that the clamping needle assembly 21 can clamp the electrode assembly 200 from the winding needle 11 , and the clamping needle assembly 21 can drive the electrode assembly 200 to separate from the winding needle 11 .

[0312] refer to Fig.21 In some embodiments, in the step of driving the clamping needle assembly 21 to move from the winding mechanism 10 to the shaping mechanism 30 by the transport assembly 22, that is, in the step S431, it includes: S4311: Drive the needle clamping assembly 21 to move along the second direction and the third direction through the second sub-transport assembly 222 and the third sub-transport assembly 223.

[0313] In this step, the second sub-transfer component 222 is the second sub-transfer component 222 in the winding device 100 provided in some embodiments of the first aspect, that is, the structure in the corresponding first sub-unloading mechanism 20a or the second sub-unloading mechanism 20b for driving the clamping needle component 21 to move; the second sub-transfer component 222 is used to drive the clamping needle component 21 to move along the second direction.

[0314] The third sub-transfer component 223 is the third sub-transfer component 223 in the winding device 100 provided in some embodiments of the first aspect, that is, the structure in the corresponding first sub-unloading mechanism 20a or the second sub-unloading mechanism 20b for driving the clamping needle component 21 to move; the third sub-transfer component 223 is used to drive the clamping needle component 21 to move along the third direction.

[0315] The first sub-transfer assembly 221 is used to drive the clamping needle assembly 21 to move along the first direction. The first direction, the second direction and the third direction are perpendicular to each other. Under the joint action of the first sub-transfer assembly 221, the second sub-transfer assembly 222 and the third sub-transfer assembly 223, the clamping needle assembly 21 can have three different movement directions, so that the clamping needle assembly 21 can be close to or away from the winding mechanism 10, to be close to or away from the corresponding unloading station 16, and also enable the clamping needle assembly 21 to reciprocate between the winding mechanism 10 and the shaping mechanism 30.

[0316] S4312: Drive the clamping needle assembly 21 into the shaping space of the shaping mechanism 30 through the first sub-transport assembly 221.

[0317] In this step, the needle clamping assembly 21 carrying the electrode assembly 200 can enter the shaping mechanism 30 under the action of the first sub-transportation assembly 221, so that the shaping mechanism 30 can perform shaping processing on the electrode assembly 200.

[0318] It can be understood that the first sub-transport component 221 can also drive the clamping needle component 21 to exit the shaping mechanism 30, so that the clamping needle component 21 returns to the side of the winding mechanism 10 and performs the next material collection.

[0319] In this embodiment, the second sub-transport assembly 222 and the third sub-transport assembly 223 drive the clamping needle assembly 21 to move in different directions, so that the clamping needle assembly 21 can transport the electrode assembly 200 to the shaping mechanism 30.

[0320] In some embodiments, in the step of driving the first clamping needle 212 to approach the second clamping needle 213 of the corresponding clamping needle assembly 21 through the clamping needle moving assembly, that is, in S4212, it also includes: S4212a: Obtain the pressure value applied by the first clamping needle 212 and the second clamping needle 213 to the electrode assembly 200 through the pressure sensor.

[0321] In this step, the pressure sensor is the pressure sensor in the winding device 100 provided in some embodiments of the first aspect, that is, the structure in the clamping needle assembly 21 for detecting the force applied to the electrode assembly 200. The value detected by the pressure sensor is the pressure applied by the first needle body 111 and / or the second needle body 111 to the electrode assembly 200, and is called the detection pressure. The pressure sensor can be arranged on the first clamping needle 212, or on the second clamping needle 213, or on both the first clamping needle 212 and the second clamping needle 213.

[0322] In the case where the pressure sensor is provided on the first clamping needle 212, after the first clamping needle 212 moves toward the second clamping needle 213 and contacts the electrode assembly 200, the first clamping needle 212 continues to move to form an interaction force between the first clamping needle 212 and the electrode assembly 200, and the detection pressure of the pressure sensor is the force; in the case where the pressure sensor is provided on the second clamping needle 213, after the first clamping needle 212 moves toward the second clamping needle 213 and presses the electrode assembly 200 against the second clamping needle 213, an interaction force is formed between the electrode assembly 200 and the second clamping needle 213, and the detection pressure of the pressure sensor is the force.

[0323] S4212b: The first clamping needle 212 is driven to approach the corresponding second clamping needle 213 through the clamping needle moving assembly until the detected pressure is greater than or equal to the pressure threshold.

[0324] In this step, the pressure threshold refers to the value of the force that is not likely to cause damage to the electrode assembly 200, so as to reduce the damage that may be caused to the electrode assembly 200 by the first clamping needle 212 and the second clamping needle 213; at the same time, under the value of the pressure threshold, the first clamping needle 212 and the second clamping needle 213 can also clamp or fix the electrode assembly 200 more stably, so as to facilitate the transfer of the electrode assembly 200 and reduce the looseness of the electrode assembly 200.

[0325] The pressure threshold is a preset parameter, and the pressure threshold can be set in the clamping needle moving component, and can also be set in other electronic devices that control the movement of the clamping needle moving component.

[0326] When the pressure sensor is provided on the first clamping needle 212, the clamping needle moving assembly controls the first clamping needle 212 to move close to the second clamping needle 213 and makes the first clamping needle 212 abut against the electrode assembly 200; after the first clamping needle 212 abuts against the electrode assembly 200, the pressure sensor can detect the pressure value between the first clamping needle 212 and the electrode assembly 200 and form a detection pressure to send to the clamping needle moving assembly, the clamping needle moving assembly can compare the size relationship between the detection pressure and the pressure threshold, and the clamping needle moving assembly can control the first clamping needle 212 to stop moving when the detection pressure is greater than or equal to the pressure threshold.

[0327] When the pressure sensor is provided on the second clamping needle 213, the clamping needle moving assembly controls the first clamping needle 212 to move close to the second clamping needle 213, and presses the electrode assembly 200 against the second clamping needle 213 through the first clamping needle 212; after the electrode assembly 200 is pressed against the second clamping needle 213, the pressure sensor can detect the pressure value between the electrode assembly 200 and the second clamping needle 213 and form a detection pressure to send to the clamping needle moving assembly, the clamping needle moving assembly can compare the size relationship between the detection pressure and the pressure threshold, and the clamping needle moving assembly can control the first clamping needle 212 to stop moving when the detection pressure is greater than or equal to the pressure threshold; it can be understood that when the pressure sensor is provided on the second clamping needle 213, the pressure threshold can be smaller.

[0328] In this embodiment, the pressure of the first clamping needle 212 or the second clamping needle 213 is detected by a pressure sensor, and the clamping needle moving assembly controls the action state of the first clamping needle 212 through the detected pressure of the pressure sensor to reduce the situation where the first clamping needle 212 and the second clamping needle 213 excessively clamp the electrode assembly 200 and cause damage to the electrode assembly 200.

[0329] refer to Fig. 20 In some embodiments, the step of shaping the electrode assembly 200 by the shaping mechanism 30 to obtain the shaped electrode assembly 200, that is, the step S430, includes: S432 : The first pressing plate 31 of the shaping mechanism 30 moves close to the second pressing plate 32 of the shaping mechanism 30 and moves to a first position to pre-fix the electrode assembly 200 .

[0330] In this step, the first pressing plate 31 and the second pressing plate 32 are the first pressing plate 31 and the second pressing plate 32 in the winding device 100 provided in some embodiments of the first aspect, that is, the structure for pressing the electrode assembly 200 in the shaping mechanism 30 .

[0331] The pre-fixation of the electrode assembly 200 refers to the position where the first pressing plate 31 and the second pressing plate 32 can suppress the deformation of the electrode assembly 200; because after the first sub-unloading mechanism 20a or the second sub-unloading mechanism 20b withdraws from the electrode assembly 200, the support for the electrode assembly 200 is lost, the electrode assembly 200 is prone to loosening outwards and shrinking inwards, and it is easy to cause wrinkles on the electrode assembly 200 after shaping; therefore, the looseness of the electrode assembly 200 is limited by pre-fixation.

[0332] The first position refers to the position to which the first pressure plate 31 can move. When the first pressure plate 31 moves to the first position, there may be no force between the first pressure plate 31 and the electrode assembly 200. However, if the electrode assembly 200 is loose, a force will be applied to the first pressure plate 31. At this time, the first pressure plate 31 can suppress the loosening of the electrode assembly 200.

[0333] When the first pressing plate 31 moves to the first position, the first pressing plate 31 can also be pressed on the electrode assembly 200, and there is a force between the first pressing plate 31 and the electrode assembly 200 to prevent the electrode assembly 200 from loosening; it can be understood that at this time, the pressure of the first pressing plate 31 on the electrode assembly 200 should not be too large, so as to reduce the resistance of the first clamping needle 212 to withdraw from the inner circle of the electrode assembly 200, and also reduce the damage to the electrode assembly 200.

[0334] S433: The first sub-unloading mechanism 20a and / or the second sub-unloading mechanism 20b are separated from the electrode assembly 200 and reset.

[0335] In this step, the transport assembly 22 drives the clamping needle assembly 21 to withdraw from the electrode assembly 200 to reduce the interference of the clamping needle assembly 21 on the shaping process of the electrode assembly 200 .

[0336] After withdrawing the electrode assembly 200 , the first sub-unloading mechanism 20 a or the second sub-unloading mechanism 20 b can be directly reset to one side of the turret 12 without waiting for the shaping of the electrode assembly 200 to be completed.

[0337] S434 : The first pressing plate 31 continues to move closer to the second pressing plate 32 and moves to the second position to shape the electrode assembly 200 .

[0338] In this step, the second position refers to the position to which the first pressing plate 31 can move. When the first pressing plate 31 moves to the second position, the distance between the first pressing plate 31 and the second pressing plate 32 is shortest, and the shaping mechanism 30 completes the shaping process of the electrode assembly 200.

[0339] This embodiment provides some steps for the shaping mechanism 30 to shape the electrode assembly 200, so that the unloading mechanism 20 can be separated from the shaping mechanism 30 during the shaping process to reduce the interference of the unloading mechanism 20 on the shaping mechanism 30; it can also reduce the risk of the electrode assembly 200 becoming loose or wrinkled during the shaping process, so that the shaping mechanism 30 can better shape the electrode assembly 200.

[0340] refer to Fig.17 In some embodiments, after the step of shaping the electrode assembly 200 by the shaping mechanism 30 to obtain the shaped electrode assembly 200, that is, after S430, the winding method further includes: S450 : The shaped electrode assembly 200 is conveyed to the next process through the conveyor belt 322 of the second pressing plate 32 .

[0341] In this step, the conveyor belt 322 is the conveyor belt 322 in the winding device 100 provided in some embodiments of the first aspect, that is, the structure in the second press plate 32 for conveying the electrode assembly 200 to other equipment, that is, part of the conveyor belt 322 can be located under the first press plate 31, and other parts of the conveyor belt 322 can extend to other equipment.

[0342] During the shaping process of the electrode assembly 200 , the electrode assembly 200 is placed on the conveyor belt 322 , so that the conveyor belt 322 can directly convey the electrode assembly 200 to other equipment after the shaping of the electrode assembly 200 is completed.

[0343] For example, when the conveyor belt 322 is a closed ring structure, the load-bearing member 321 is located at the inner circle of the conveyor belt 322 and below the portion of the conveyor belt 322 facing the first pressing plate 31; after the electrode assembly 200 is placed in the shaping space, the electrode assembly 200 is located on the conveyor belt 322 and above the load-bearing member 321; at this time, the first pressing plate 31 moves in a direction close to the load-bearing member 321 to press both the electrode assembly 200 and a portion of the conveyor belt 322 on the load-bearing member 321, thereby completing the shaping of the electrode assembly 200; thereafter, the first pressing plate 31 moves in a direction away from the load-bearing member 321, and the conveyor belt 322 moves to transport the electrode assembly 200 to other equipment, thereby completing a shaping process for the electrode assembly 200.

[0344] During the process of the shaping mechanism 30 shaping the electrode assembly 200, the first sub-feeding mechanism 20a or the second sub-feeding mechanism 20b does not need to wait for the shaping of the electrode assembly 200 to be completed, but can directly return to the side of the turret 12 to reset; that is, step S430 and step S440 can be executed synchronously, accordingly, step S450 can be performed after step S430 without waiting for the first sub-feeding mechanism 20a or the second sub-feeding mechanism 20b in step S440 to leave the shaping mechanism 30.

[0345] In this embodiment, the electrode assembly 200 that has been shaped is conveyed to the next process via the conveyor belt 322 so that the shaping mechanism 30 can perform the next shaping action.

[0346] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A winding device, characterized in that: include: A winding mechanism, used for winding a substrate to form an electrode assembly, the winding mechanism comprising a turret and a winding needle disposed on the turret, the turret being configured to drive the winding needle to move to each station, each of the stations comprising a material unloading station; A material unloading mechanism, comprising a first sub-material unloading mechanism and a second sub-material unloading mechanism, wherein the first sub-material unloading mechanism and the second sub-material unloading mechanism are configured to simultaneously or alternately remove the electrode assembly from the winding needle at the unloading station; At least one shaping mechanism includes a first pressing plate and a second pressing plate, wherein a shaping space is formed between the first pressing plate and the second pressing plate, and the shaping space is used to accommodate the electrode assembly removed by the unloading mechanism, and the first pressing plate and the second pressing plate are configured to be able to move toward each other to shape the electrode assembly accommodated in the shaping space.

2. The winding device according to claim 1, characterized in that: Each of the workstations includes a material unloading workstation, and the first sub-material unloading mechanism and the second sub-material unloading mechanism are configured to alternately remove the electrode assembly from the winding needle of the material unloading workstation.

3. The winding device according to claim 2, characterized in that: Each of the workstations includes a winding station, a finishing station, a gluing station, a material unloading station and a waiting station. The turret is configured to drive the winding needle to pass through the winding station, the finishing station, the gluing station, the material unloading station and the waiting station in sequence.

4. The winding device according to claim 1, characterized in that: Each of the workstations includes two unloading workstations, and the first sub-unloading mechanism and the second sub-unloading mechanism are configured to remove the electrode assembly from the winding needles of different unloading workstations.

5. The winding device according to claim 4, characterized in that: Each of the workstations includes a winding station, a finishing station, a first unloading station, a second unloading station and a waiting station. The turret is configured to drive the winding needle to pass through the winding station, the finishing station, the first unloading station, the second unloading station and the waiting station in sequence.

6. The winding device according to any one of claims 1 to 5, characterized in that: The winding device includes at least two shaping mechanisms, wherein at least one shaping mechanism is configured to shape the electrode assembly removed by the first sub-feeding mechanism, and at least one shaping mechanism is configured to shape the electrode assembly removed by the second sub-feeding mechanism.

7. The winding device according to any one of claims 1 to 5, characterized in that The first sub-material unloading mechanism and the second sub-material unloading mechanism both include: A clamping needle assembly, used for clamping the electrode assembly; The transfer assembly is used to drive the clamping needle assembly to move back and forth between the winding mechanism and the shaping mechanism.

8. The winding device according to claim 7, characterized in that: The clamping needle assembly comprises a base plate and a clamping needle movably arranged on the base plate; The transfer component includes a first sub-transfer component, the substrate is arranged on the first sub-transfer component, and the first sub-transfer component is used to drive the clamping needle component to move along a first direction to enter or exit the shaping space.

9. The winding device according to claim 8, characterized in that The transport component also includes: A second sub-transport assembly, used for driving the clamping needle assembly to move along a second direction; A third sub-transport assembly is used to drive the needle clamping assembly to move along a third direction; The first direction, the second direction and the third direction are perpendicular to each other, and the first sub-transport component, the second sub-transport component and the third sub-transport component are connected in pairs.

10. The winding device according to claim 9, characterized in that: The clamping needles include at least two groups of first clamping needles and second clamping needles arranged opposite to each other; The clamping needle assembly also includes a clamping needle moving assembly, which is used to drive the first clamping needle to approach or move away from the corresponding second clamping needle.

11. The winding device according to claim 10, characterized in that: The clamping needle assembly also includes a pressure sensor that is communicatively connected to the clamping needle moving assembly, and the pressure sensor is used to detect the pressure applied to the electrode assembly when the first clamping needle and the second clamping needle clamp the electrode assembly.

12. The winding device according to any one of claims 1 to 5, characterized in that: The winding needle comprises a needle body and at least two material discharge grooves opened on the circumference of the needle body; In the axial direction of the needle body, at least one end of the feed trough is communicated with the space outside the needle body.

13. The winding device according to any one of claims 1 to 5, characterized in that: The winding device further comprises a position detection device disposed on one side of the turret, wherein the position detection device is configured to detect whether the electrode assembly is present on the winding needle in the unloading station.

14. The winding device according to any one of claims 1 to 5, characterized in that: The first pressing plate has at least a first position and a second position arranged along the movement direction of the first pressing plate, the distance between the first pressing plate and the second pressing plate when the first pressing plate is in the first position is greater than the distance between the first pressing plate and the second pressing plate when the first pressing plate is in the second position, and the distance between the first pressing plate and the second pressing plate when the first pressing plate is in the first position is less than or equal to the thickness of the electrode assembly.

15. The winding device according to claim 14, characterized in that: The second pressing plate includes a load-bearing member and a conveyor belt. The load-bearing member is arranged opposite to the first pressing plate and forms the shaping space. At least a portion of the conveyor belt extends to the side of the load-bearing member facing the first pressing plate. The conveyor belt is configured to convey the electrode assembly that has been shaped to the next process.

16. A winding method for a winding device, characterized in that: The method comprises: Winding the substrate by a winding mechanism to obtain an electrode assembly; The electrode assembly is clamped and unloaded by the first unloading mechanism and the second unloading mechanism, and the electrode assembly is transferred to the shaping mechanism; The electrode assembly is shaped by the shaping mechanism to obtain a shaped electrode assembly.

17. The winding method of the winding device according to claim 16, characterized in that: The winding mechanism comprises a turret and a winding needle; The step of winding the substrate by the winding mechanism to obtain the electrode assembly comprises: rotating the turret to drive the winding needle to move to each station, and winding the substrate by the winding needle to obtain the electrode assembly; The step of clamping and blanking the electrode assembly by the first and second sub-blank mechanism includes: clamping and blanking the electrode assembly on the winding needle at the blanking station by the first and second sub-blank mechanism, and transferring the electrode assembly to the shaping mechanism.

18. The winding method of the winding device according to claim 17, characterized in that: After the step of transferring the electrode assembly to the shaping mechanism through the first sub-feeding mechanism and the second sub-feeding mechanism, the method further includes: The first sub-material unloading mechanism and the second sub-material unloading mechanism are separated from the shaping mechanism and reset.

19. The winding method of the winding device according to claim 18, characterized in that: The winding mechanism includes a material unloading station; The step of clamping and unloading the electrode assembly on the winding needle located at the unloading station by the first unloading mechanism and the second unloading mechanism includes: The electrode assembly on the winding needle at the blanking station is alternately clamped and blanked by the first sub-blank mechanism and the second sub-blank mechanism, and the following conditions are met: t / 2<T, t is the time taken by the first sub-unloading mechanism and / or the second sub-unloading mechanism to complete the clamping and unloading of the electrode assembly and reset, and T is the total time taken by the winding needle to stay in one station and move to the next station.

20. The winding method of the winding device according to claim 18, characterized in that: The winding mechanism comprises two unloading stations; The step of clamping and unloading the electrode assembly on the winding needle located at the unloading station by the first unloading mechanism and the second unloading mechanism includes: The electrode assembly on the winding needle located at different unloading stations is clamped and unloaded by the first unloading mechanism and the second unloading mechanism, respectively, and the following conditions are met: t<2T, t is the time taken by the first sub-unloading mechanism and / or the second sub-unloading mechanism to complete the clamping and unloading of the electrode assembly and reset, and T is the total time taken by the winding needle to stay in one station and move to the next station.

21. The winding method of the winding device according to claim 20, characterized in that: The step of clamping and unloading the electrode assembly on the winding needles located at different unloading stations by the first unloading mechanism and the second unloading mechanism respectively includes: The first sub-unloading mechanism and the second sub-unloading mechanism respectively clamp and unload the electrode assembly on the winding needles located at different unloading stations at the same time.

22. The winding method of the winding device according to claim 21, characterized in that: Before the step of simultaneously clamping and unloading the electrode assemblies on the winding needles located at different unloading stations by the first unloading mechanism and the second unloading mechanism, the method includes: Detecting whether the electrode assembly exists on the winding needle by a position detection device; When the electrode assemblies are present on the winding needles of the two unloading stations, the electrode assemblies on the winding needles of different unloading stations are clamped and unloaded by the first unloading mechanism and the second unloading mechanism, respectively, and the electrode assemblies are transferred to the shaping mechanism; When the electrode assemblies are not uniformly present on the winding needles of the two unloading stations, the first unloading mechanism and the second unloading mechanism are prevented from entering the corresponding unloading stations.

23. The winding method of the winding device according to any one of claims 16 to 22, characterized in that: The winding device comprises at least two of the shaping mechanisms; The step of shaping the electrode assembly by the shaping mechanism includes: The electrode assembly removed by the first sub-unloading mechanism is shaped by at least one of the shaping mechanisms, and the electrode assembly removed by the second sub-unloading mechanism is shaped by at least another of the shaping mechanisms.

24. The winding method of any one of claims 16 to 22, characterized in that: The first sub-material unloading mechanism and the second sub-material unloading mechanism both include a clamping needle assembly and a transfer assembly; The step of clamping and unloading the electrode assembly by the first unloading mechanism and the second unloading mechanism includes: clamping the electrode assembly on the winding mechanism by the clamping needle assembly; The step of transferring the electrode assembly to the shaping mechanism through the first sub-unloading mechanism and the second sub-unloading mechanism includes: driving the clamping needle assembly to move from the winding mechanism to the shaping mechanism through the transfer assembly.

25. The winding method of the winding device according to claim 24, characterized in that: The clamping needle assembly includes a first clamping needle, a second clamping needle and a clamping needle moving assembly, the transport assembly includes a first sub-transport assembly, and the winding mechanism includes a winding needle; The step of clamping the electrode assembly on the winding mechanism by the clamping needle assembly includes: The first clamping needle is driven to enter the unloading slot of the winding needle along the first direction by the first sub-transporting component; The clamping needle moving assembly drives the first clamping needle to approach the corresponding second clamping needle and hold the second clamping needle against the electrode assembly; The clamping needle assembly is driven to move along a first direction by the first sub-transport assembly to drive the electrode assembly to separate from the winding needle.

26. The winding method of the winding device according to claim 25, characterized in that: The transport component also includes a second sub-transport component and a third sub-transport component; The step of driving the needle clamping assembly from the winding mechanism to the shaping mechanism by the transfer assembly includes: The needle clamping assembly is driven to move along the second direction and the third direction by the second sub-transport assembly and the third sub-transport assembly; The needle clamping assembly is driven by the first sub-transport assembly to enter the shaping space of the shaping mechanism along the first direction.

27. The winding method of the winding device according to claim 26, characterized in that: The step of driving the first clamping needle to approach the corresponding second clamping needle through the clamping needle moving assembly includes: Acquiring the pressure value applied by the first clamping needle and the second clamping needle to the electrode assembly through a pressure sensor; The first clamping needle is driven to approach the corresponding second clamping needle by the clamping needle moving assembly until the pressure value acquired by the pressure sensor is greater than or equal to the pressure threshold.

28. The winding method of any one of claims 16 to 22, characterized in that: The step of shaping the electrode assembly by the shaping mechanism to obtain the shaped electrode assembly includes: The first pressing plate of the shaping mechanism moves close to the second pressing plate of the shaping mechanism and moves to a first position to pre-fix the electrode assembly; The first sub-feeding mechanism and / or the second sub-feeding mechanism are separated from the electrode assembly and reset; The first pressing plate continues to move closer to the second pressing plate and moves to a second position to shape the electrode assembly.

29. The winding method of the winding device according to claim 28, characterized in that: After the step of shaping the electrode assembly by the shaping mechanism to obtain the shaped electrode assembly, the method comprises: The electrode assembly after shaping is conveyed to the next process by the conveyor belt of the second pressing plate.

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