Unwinding and winding equipment

Abstract

The present application discloses an unwinding device and a winding device, the unwinding device includes a first driving member, a speed reduction mechanism and an inflatable shaft, the speed reduction mechanism includes an input shaft and an output shaft, the driving shaft of the first driving member is connected to the input shaft, the input shaft is connected to the output shaft in a transmission manner, the output shaft includes a first air channel; the inflatable shaft is connected to the output shaft along the axial direction of the output shaft, and the inflatable shaft includes a second air channel connected to the first air channel. By arranging a speed reduction mechanism between the inflatable shaft and the motor, and the inflatable shaft is directly connected to the output shaft of the speed reduction mechanism, on the one hand, the torque transmitted from the motor to the inflatable shaft is increased, and the inflatable shaft can drive the electrode material roll to unwind more stably; on the other hand, the output shaft of the speed reduction mechanism can also inject or exhaust air into the inflatable shaft while driving the inflatable shaft to rotate, simplifying the structural design of the unwinding device so that the unwinding device can be further miniaturized, which helps to reduce the overall space occupancy and manufacturing cost of the winding device.

Description

Technical Field

[0001] The present application relates to the technical field of unwinding, and in particular to an unwinding device and a winding equipment. Background Art

[0002] In the field of lithium battery manufacturing, electrode material strips are usually wound into rolls for storage and transportation. When using the electrode material strips, the rolled electrode material rolls need to be unwound through the unwinding device in the winding equipment. The electrode material roll is sleeved on the air shaft of the unwinding device. After the gas is passed into the air shaft, it will expand radially to tighten the electrode material roll to the air shaft, and then the air shaft is rotated to output the electrode material strip.

[0003] In the unwinding device, a motor is usually used to drive the air shaft to rotate. In order to transmit the power of the motor to the air shaft, a belt transmission structure needs to be set between the motor and the air shaft, which causes the unwinding device to require a larger space and also increases the manufacturing cost of the winding equipment. Utility Model Content

[0004] The embodiments of the present application disclose an unwinding device and a winding equipment, which can simplify the structure of the unwinding device, reduce the space occupied by the unwinding device, and reduce the manufacturing cost of the winding equipment.

[0005] In order to achieve the above-mentioned objectives, in the first aspect, an embodiment of the present application discloses a rewinding device, including a first driving member, a reduction mechanism and an inflatable shaft, the reduction mechanism including an input shaft and an output shaft, the driving shaft of the first driving member is connected to the input shaft, the input shaft is transmission-connected to the output shaft, the output shaft includes a first air duct; the inflatable shaft is connected to the output shaft along the axial direction of the output shaft, and the inflatable shaft includes a second air duct connected to the first air duct.

[0006] In a possible implementation of the first aspect, the reduction mechanism further includes a housing and a first transmission assembly, the input shaft and at least part of the output shaft are arranged in the housing; the first transmission assembly is arranged in the housing, and the input shaft and the output shaft are connected by transmission via the first transmission assembly.

[0007] In a possible implementation of the first aspect, the drive shaft of the first drive member and the input shaft are coaxially arranged, and the input shaft and the output shaft are spaced apart in the housing along a first direction, and the first direction is perpendicular to the axial direction of the input shaft and the output shaft.

[0008] In a possible implementation of the first aspect, the first driving member is disposed in a housing, the driving shaft of the first driving member and the rotation axis of the input shaft are perpendicular to each other, the reduction mechanism also includes a second transmission assembly, which is disposed in the housing, and the driving shaft of the first driving member and the input shaft are connected through the second transmission assembly.

[0009] In a possible implementation of the first aspect, the second transmission assembly includes a bevel gear set, the bevel gear set includes a first bevel gear and a second bevel gear, the rotation axes of the first bevel gear and the second bevel gear are perpendicular to each other, the first bevel gear is arranged on the driving shaft of the first driving member, and the second bevel gear is arranged on the input shaft.

[0010] In a possible implementation of the first aspect, the unwinding device also includes a mounting seat and a second driving member, and the box body is movably disposed on the mounting seat; the second driving member is disposed on the mounting seat, and the second driving member can drive the box body to reciprocate axially relative to the mounting seat along the inflatable shaft.

[0011] In a possible implementation of the first aspect, a slide rail or a slider is provided on the mounting seat, and the unwinding device also includes a mounting plate, on which the slide rail or the slider is provided, and the slide rail and the slider are slidably matched; the box body is provided on the mounting plate, and the second driving member is connected to the mounting plate and drives the mounting plate to reciprocate relative to the mounting seat along the axial direction of the inflatable shaft.

[0012] In a possible implementation of the first aspect, the first driving member is disposed at an end of the box body away from the mounting seat.

[0013] In a possible implementation of the first aspect, the reduction mechanism further includes an air intake joint, which is rotatably disposed on the output shaft and communicated with the first air passage, and is used to connect to the air supply device.

[0014] In a possible implementation of the first aspect, the air inlet connector is located at the end of the output shaft, and along the axial direction of the output shaft, the air inlet connector is away from the inflatable shaft.

[0015] The second aspect of the present application also provides a winding device, which includes the unwinding device provided by the first aspect of the present application.

[0016] Compared with the prior art, the beneficial effects of this application are:

[0017] The unwinding device provided in the embodiment of the present application, by setting a reduction mechanism between the pneumatic shaft and the motor, and the pneumatic shaft is directly connected to the output shaft of the reduction mechanism, on the one hand, the torque transmitted from the motor to the pneumatic shaft is improved, and the pneumatic shaft can more stably drive the electrode material roll to perform the unwinding work; on the other hand, the output shaft of the reduction mechanism can also inject or exhaust air into the pneumatic shaft while driving the pneumatic shaft to rotate, thereby simplifying the structural design of the unwinding device; on the other hand, by using an output shaft with a certain axial length to inject or exhaust air into the pneumatic shaft, the axial length of the pneumatic shaft can be further reduced, so that the unwinding device can be further miniaturized, which helps to reduce the overall space occupancy and manufacturing cost of the winding equipment.

[0018] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a structural schematic diagram of an unwinding device in the related art;

[0021] Figure 2 A schematic diagram of the structure of an unwinding device provided in an embodiment of the present application;

[0022] Figure 3 One of the cross-sectional views of the unwinding device provided in the embodiment of the present application;

[0023] Figure 4 A second cross-sectional view of the unwinding device provided in an embodiment of the present application;

[0024] Figure 5 A schematic diagram of the position of the unwinding device in the winding equipment provided in an embodiment of the present application.

[0025] Description of reference numerals:

[0026] 01-unwinding device; 10-first driving member; 101-driving shaft; 20-reduction mechanism; 201-housing; 202-input shaft; 203-output shaft; 204-first air duct; 205-first bearing; 206-second bearing; 207-first transmission assembly; 207a-first gear; 207b-second gear; 208-second transmission assembly; 208a-first bevel gear; 208b-second bevel gear; 30-inflatable shaft; 301-second air duct; 40-mounting seat; 401-slide rail; 50-second driving member; 60-mounting plate; 601-slider; 70-intake connector; 80-back plate of electric control board. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present application to clarify the technical solutions in the embodiments of the present application; it is clearly described that the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0028] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0029] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0030] In addition, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection, it can be a direct connection, or an indirect connection through an intermediate medium, or it can be two devices; internal communication between elements or components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0031] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0032] With the rapid development of new energy technologies, lithium batteries have been widely used in many fields as high-performance green energy solutions, such as mobile communications, portable electronic devices, electric vehicles, etc. In the production process of lithium batteries, winding equipment is one of the key equipment. Its main function is to accurately stack and wind the electrode strips to form battery cells. Before winding the battery cells, the unwinding device located at the unwinding station in the winding equipment is required to unwind the rolled electrode strips. The unwound electrode strips are transported to the winding station in the winding equipment, and then wound into battery cells by the winding device.

[0033] In related technologies, such as Figure 1As shown, the unwinding device 01' is usually provided with an inflatable shaft 20'. When the inflatable shaft 20' is filled with gas, its diameter will increase, thereby tightly supporting the electrode material roll sleeved thereon. Since the inflatable shaft 20' needs to bear a heavy load, the winding device 01' usually uses a support 30' to support the inflatable shaft, that is, the inflatable shaft 20' is rotatably arranged on the support 30'. In order to ensure stable support for the inflatable shaft 20', the support 30' usually needs to be designed to be longer to match the inflatable shaft 20', and needs to have sufficient structural strength. In addition, in order to shorten the axial length of the unwinding device 01', the driving motor 10' driving the inflatable shaft 20' is usually arranged along the height direction of the winding device with the inflatable shaft 20'. When the power of the driving motor 10' is decelerated by the speed reduction mechanism 50' and transmitted to the inflatable shaft 20', it is necessary to decelerate the speed output by the driving motor 10' and then transmit the torque to the inflatable shaft 20' through the belt transmission structure 40'. The belt transmission structure 40' is usually arranged at the axial end of the inflatable shaft 20'. The above factors all cause the unwinding device 01' to occupy a large space, and also increase the manufacturing cost of the winding device.

[0034] Based on this, the present application proposes a unwinding device, which, on the one hand, eliminates the belt transmission structure between the motor and the inflatable shaft, and on the other hand, further shortens the length of the inflatable shaft, thereby eliminating the need for a special support for the inflatable shaft. The structure of the unwinding device is further compacted and miniaturized, and the overall volume and manufacturing cost of the winding equipment are controlled.

[0035] like Figure 2 The figure is a schematic diagram of the structure of the unwinding device 01 provided in an embodiment of the present application, wherein the unwinding device 01 includes a first driving member 10, a reduction mechanism 20 and an inflatable shaft 30, the reduction mechanism 20 includes an input shaft 202 and an output shaft 203, the driving shaft 101 of the first driving member 10 is connected to the input shaft 202, the input shaft 202 is transmission-connected to the output shaft 203, the output shaft 203 includes a first air duct 204, the inflatable shaft 30 is axially connected to the output shaft 203, and the inflatable shaft 30 includes a second air duct 301 connected to the first air duct 204.

[0036] like Figures 2 to 5 As shown, in the embodiment of the present application, the unwinding device 01 may have a first direction and a second direction, the first direction is the height direction of the unwinding device 01, the second direction is a direction perpendicular to the first direction, and the second direction may be the axial direction of the input shaft 202, the output shaft 203 and the inflatable shaft 30. Among them, the first direction is Figures 2 to 5 The X direction is shown, and the second direction is Figures 2 to 5 Y direction shown.

[0037] In this embodiment, the first driving member 10 of the unwinding device 01 is connected to the input shaft 202 of the reduction mechanism 20, and the output shaft 203 of the reduction mechanism 20 is connected to the inflatable shaft 30, wherein the rotation speed of the input shaft 202 can be the same as the rotation speed of the drive shaft 101 of the motor, and the rotation speed of the output shaft 203 is lower than the rotation speed of the input shaft 202. By arranging the reduction mechanism 20 between the first driving member 10 and the inflatable shaft 30, the rotation speed of the output shaft 203 can be reduced, so that the inflatable shaft 30 connected to the output shaft 203 can obtain the required relatively low rotation speed to meet the rotation speed requirements when unwinding the electrode material roll. In addition, reducing the rotation speed by the reduction mechanism 20 can also increase the torque transmitted to the inflatable shaft 30, so as to ensure that the inflatable shaft 30 can drive the electrode material roll to be stably unwound, thereby improving the working efficiency and stability of the unwinding device 01 outputting the electrode material strip. Optionally, the first driving member 10 can be a motor.

[0038] Specifically, the driving shaft 101 of the first driving member 10 is connected to the input shaft 202 in the reduction mechanism 20, the input shaft 202 of the reduction mechanism 20 is transmission-connected to the output shaft 203, the output shaft 203 is connected to the inflatable shaft 30 to transmit torque to the inflatable shaft 30, the inflatable shaft 30 is connected to the axial end of the output shaft 203, and the output shaft 203 and the inflatable shaft 30 can be directly connected through a coupling. Different from the related art, the unwinding device 01 provided in the embodiment of the present application no longer needs to set a belt transmission structure on the inflatable shaft 30, but directly connects the inflatable shaft 30 through the output shaft 203 of the reduction mechanism 20, which is conducive to simplifying the structure of the unwinding device 01 and reducing costs.

[0039] It is worth noting that a first air channel 204 is also provided in the output shaft 203, and the first air channel 204 can be used as a channel for supplying air to the inflatable shaft 30. A second air channel 301 connected to the first air channel 204 is provided in the inflatable shaft 30, so the output shaft 203 can also realize the supply or exhaust of air to the inflatable shaft 30, so that the diameter of the inflatable shaft 30 expands or contracts to tighten or loosen the electrode material roll. It can be seen that the output shaft 203 of the reduction mechanism 20 can not only transmit a larger torque to the inflatable shaft 30, but also can be reused as an air supply component for supplying air to the inflatable shaft 30, so the structure of the unwinding device 01 is further simplified. When the electrode material roll needs to be unwound, the first driving member 10 transmits the torque to the inflatable shaft 30 through the reduction mechanism 20, and the external air source injects gas into the inflatable shaft 30 through the first air channel 204 of the output shaft 203, and the diameter of the inflatable shaft 30 expands, thereby driving the electrode material roll on the inflatable shaft 30 to rotate synchronously, and output the electrode material belt. When the electrode material roll does not need to be tightened and fixed, the gas in the inflatable shaft 30 can also be discharged through the first air channel 204. After the inflatable shaft 30 is deflated, the electrode material roll can be loosened, so that a new electrode material roll can be replaced on the inflatable shaft 30.

[0040] It can be understood that, since the output shaft 203 of the speed reduction mechanism 20 has a certain axial length, the first air passage 204 also has a certain length accordingly, so that sufficient gas can be injected into the inflatable shaft 30, and the inflatable shaft 30 does not need to be provided with other ventilation structures. Therefore, the axial length of the inflatable shaft 30 can be further shortened. When the inflatable shaft 30 is shortened, the unwinding device 01 does not need to be provided with a support specifically used to support the longer inflatable shaft 30 in the related art, and the unwinding device 01 can be further miniaturized.

[0041] In this way, the unwinding device 01 provided in the embodiment of the present application, by setting a reduction mechanism 20 between the inflatable shaft 30 and the motor, and the inflatable shaft 30 is directly connected to the output shaft 203 of the reduction mechanism 20, on the one hand, the torque transmitted from the motor to the inflatable shaft 30 is improved, and the inflatable shaft 30 can more stably drive the electrode material roll to perform the unwinding work; on the other hand, the output shaft 203 of the reduction mechanism 20 can also inject or exhaust air into the inflatable shaft 30 while driving the inflatable shaft 30 to rotate, thereby simplifying the structural design of the unwinding device 01; on the other hand, by using the output shaft 203 to inject or exhaust air into the inflatable shaft 30, there is no need to set an air intake mechanism on the inflatable shaft 30, so that the axial length of the inflatable shaft 30 can be further reduced, so that the unwinding device 01 can be further miniaturized, which helps to reduce the overall space occupancy and manufacturing cost of the winding equipment.

[0042] In order to further optimize the structural layout of the unwinding device 01, in some embodiments, the speed reduction mechanism 20 further includes a housing 201, and the input shaft 202 and the output shaft 203 of the speed reduction mechanism 20 are arranged in the housing 201. The housing 201 is provided with a first mounting hole that penetrates the housing 201 along the axial direction of the inflatable shaft 30, and the input shaft 202 is installed in the first mounting hole through the first bearing 205 to realize the rotation of the input shaft 202 in the housing 201. The housing 201 further includes a second mounting hole that penetrates the housing 201 along the axial direction of the inflatable shaft 30, and the output shaft 203 is installed in the second mounting hole through the second bearing 206 to realize the rotation of the output shaft 203 relative to the housing 201, and at least part of the output shaft 203 can extend out of the housing 201 and connect with the inflatable shaft 30.

[0043] It can be understood that the housing 201 can not only physically protect the input shaft 202 and the output shaft 203, but also enhance the rigidity of the entire reduction mechanism 20, thereby reducing the deformation that may occur in the reduction mechanism 20 during the torque transmission process.

[0044] In order to transmit power, Figures 3 to 5As shown, the input shaft 202 and the output shaft 203 are connected by a first transmission assembly 207, the first driving member 10 drives the input shaft 202 to rotate, and the first transmission assembly 207 reduces the speed of the input shaft 202 and transmits the power to the output shaft 203. Optionally, the first transmission assembly 207 can be a gear set, and the gear set can include a first gear 207a and a second gear 207b, the first gear 207a is nested in the input shaft 202, the second gear 207b is nested in the output shaft 203, the first gear 207a and the second gear 207b are meshed with each other, and the transmission ratio of the first gear 207a and the second gear 207b is greater than 1, so that the speed of the input shaft 202 transmitted to the output shaft 203 through the first transmission assembly 207 is reduced and the torque is increased.

[0045] The first transmission assembly 207 is disposed inside the housing 201 , and the housing 201 can provide protection for the first transmission assembly 207 to prevent pollutants from interfering with the transmission torque of the first transmission assembly 207 .

[0046] In one implementation of the speed reduction mechanism 20, as Figure 3 As shown, the driving shaft 101 of the first driving member 10 can be arranged coaxially with the input shaft 202, and the first driving member 10 can be located on the side of the box body 201, which can reduce the energy loss during the power transmission process between the first driving member 10 and the input shaft 202 and improve the transmission efficiency.

[0047] In addition, the input shaft 202 and the output shaft 203 are arranged at intervals along the first direction. As described above, the first direction may be the height direction of the unwinding device 01 and the winding device, and the first direction is perpendicular to the axial direction of the input shaft 202 and the output shaft 203. Arranging the input shaft 202 and the output shaft 203 at intervals along the first direction can effectively utilize the space at the height of the unwinding device 01, thereby reducing the space occupied by the unwinding device 01 in the second direction.

[0048] In this way, the first driving member 10 is coaxially arranged with the input shaft 202, and the input shaft 202 and the output shaft 203 are arranged at intervals along the first direction, which not only ensures that the power output by the first driving member 10 is efficiently transmitted to the input shaft 202, but also reasonably utilizes the space of the unwinding device 01 along the height direction, reduces the space occupied by the unwinding device 01 in the second direction, and makes the unwinding device 01 compact and miniaturized.

[0049] In another implementation of the speed reduction mechanism 20, as Figure 4 and Figure 5As shown, the first driving member 10 can be arranged at the top of the box 201, the driving shaft 101 of the first driving member 10 and the rotation axis of the input shaft 202 are perpendicular to each other, the driving shaft 101 of the first driving member 10 extends into the interior of the box 201, and is connected to the input shaft 202 through the second transmission assembly 208. In this way, the first driving member 10 located at the top of the box 201 reduces the space occupied by the unwinding device 01 in the second direction, that is, the length of the unwinding device 01 along the second direction is effectively shortened.

[0050] Specifically, the drive shaft 101 of the first driving member 10 extends along the first direction, that is, the drive shaft 101 extends along the height direction of the winding device. In this way, the first driving member 10 does not need to be arranged on the side of the box body 201, thereby further reducing the space occupied by the unwinding device 01 along the second direction. In addition, the input shaft 202 and the output shaft 203 are also arranged at intervals along the first direction to effectively utilize the space at the height of the unwinding device 01, thereby reducing the space occupied by the unwinding device 01 in the second direction.

[0051] For example, Figure 5 As shown, the unwinding device 01 needs to be arranged as a whole on the side of the rear plate of the electric control cabinet of the winding device. Along the second direction, there is an inspection space for maintenance between the end of the output shaft 203 and the rear plate of the electric control cabinet. When the first driving member 10 is arranged on the top of the box body 201, since the length of the unwinding device 01 along the second direction is reduced, the above-mentioned inspection space can be further expanded, which is convenient for operators to inspect the unwinding device 01.

[0052] In order to ensure that the power of the first driving member 10 can be transmitted to the input shaft 202 whose rotation axis is perpendicular to the first driving member 10, as shown in FIG. Figure 4 and Figure 5 As shown, the speed reduction mechanism 20 further includes a second transmission assembly 208 for transmitting the power output by the first driving member 10 to the input shaft 202. The second transmission assembly 208 is used to realize the power transmission between the driving shaft 101 and the input shaft 202 which are perpendicular to each other. The driving shaft 101 of the first driving member 10 is connected to the input shaft 202 through the second transmission assembly 208. The second transmission assembly 208 is also arranged inside the housing 201. The housing 201 can provide protection for the second transmission assembly 208 to prevent pollutants from interfering with the transmission torque of the second transmission assembly 208.

[0053] Optionally, the second transmission assembly 208 may have a deceleration effect, that is, the speed output by the drive shaft 101 of the first driving member 10 may be reduced by the second transmission assembly 208 for the first time when it is transmitted to the input shaft 202, and when the input shaft 202 transmits torque to the output shaft 203, the speed output by the input shaft 202 may be reduced by the first transmission assembly 207 for the second time, so that the inflatable shaft 30 obtains a greater torque. Of course, the second transmission assembly 208 may also only turn the transmission direction of the power, and the speed of the drive shaft 101 of the first driving member 10 to the output shaft 203 is reduced only once by the first transmission assembly 207.

[0054] Further, the second transmission assembly 208 may include a bevel gear set, the bevel gear set includes a first bevel gear 208a and a second bevel gear 208b, the rotation axes of the first bevel gear 208a and the second bevel gear 208b are perpendicular to each other, the first bevel gear 208a is embedded in the driving shaft 101 of the first driving member 10, the first bevel gear 208a rotates synchronously with the driving shaft 101, the second bevel gear 208b is nested in the input shaft 202, and the second bevel gear 208b and the first gear 207a are spaced apart along the axial direction of the input shaft 202. The second bevel gear 208b and the first bevel gear 208a are meshed with each other to realize power transmission between the first driving member 10 and the input shaft 202 whose rotation axes are perpendicular to each other.

[0055] Optionally, the number of teeth of the first bevel gear 208a and the second bevel gear 208b may be the same or different. When the number of teeth of the first bevel gear 208a and the second bevel gear 208b are equal, the speed of the first drive member 10 transmitted to the input shaft 202 through the second transmission assembly 208 remains unchanged. When the transmission ratio of the first bevel gear 208a and the second bevel gear 208b is greater than 1, the speed of the first drive member 10 transmitted to the input shaft 202 through the second transmission assembly 208 can be reduced, so that the inflatable shaft 30 obtains a lower speed and a larger torque.

[0056] When the unwinding position of the electrode material roll needs to be adjusted, in some embodiments, the unwinding device 01 further includes a mounting seat 40 and a second driving member 50. The box body 201 is movably disposed on the mounting seat 40. The second driving member 50 is disposed on the mounting seat 40, and the second driving member 50 can drive the box body 201 to reciprocate relative to the mounting seat 40 along the axial direction of the inflatable shaft 30.

[0057] In this embodiment, the unwinding device 01 further includes a mounting seat 40, which is used to support the box 201. It should be noted that, unlike the larger support used to support the inflatable shaft in the related art, the mounting seat 40 is used to support the box 201, and the box 201 is used to install structural parts such as the input shaft 202, the output shaft 203 and the transmission assembly, so the box 201 can be miniaturized. Therefore, the volume of the mounting seat 40 can be significantly reduced compared with the volume of the support in the related art, thereby making the unwinding device 01 more compact.

[0058] In the case where the electrode material strip output by the electrode material roll needs to adjust the output position, the second driving member 50 can drive the box 201 to move relative to the mounting seat 40. When the box 201 moves relative to the mounting seat 40, it can drive the inflatable shaft 30 to move along its axial direction, and then drive the electrode material roll on the inflatable shaft 30 to move along the axial direction to achieve the correction of the output position of the electrode material strip. Optionally, the second driving member 50 can be any one of a motor and a cylinder. The embodiment of the present application does not make special limitations on this, as long as the second driving member 50 can drive the box 201 to reciprocate relative to the mounting seat 40 along the second direction (that is, the axial direction of the inflatable shaft 30) to achieve the correction function.

[0059] Furthermore, the unwinding device 01 also includes a mounting plate 60, the box body 201 can be fixedly set on the mounting plate 60, the mounting plate 60 can be movably set on the mounting seat 40, and the mounting seat 40 is provided with a slide rail 401 or a slider 601 on the side facing the mounting plate 60, and the mounting plate 60 is provided with a slide rail 401 or a slider 601 on the side facing the mounting seat 40, and the slider 601 and the slide rail 401 can be slidably matched so that the mounting plate 60 can slide relative to the mounting seat 40.

[0060] For example, see Figure 2 In the embodiment of the present application, a slide rail 401 is provided on the side of the mounting seat 40 facing the mounting plate 60 , and a slider 601 is provided on the side of the mounting plate 60 facing the mounting seat 40 .

[0061] The output end of the second driving member 50 is connected to the mounting plate 60, and the second driving member 50 can drive the mounting plate 60 to move. When the mounting plate 60 is driven by the second driving member 50, the mounting plate 60 moves relative to the mounting seat 40 in the second direction through the cooperation of the slider 601 and the slide rail 401. The movement of the mounting plate 60 in the second direction can drive the box 201 disposed thereon and the inflatable shaft 30 fixed to the output shaft 203 to move synchronously, thereby driving the electrode material roll on the inflatable shaft 30 to move axially, so as to realize the correction of the output position of the electrode material strip.

[0062] In some embodiments, the first driving member 10 can be arranged at one end of the box 201 away from the mounting seat 40, which is equivalent to the first driving member 10, the box 201 and the mounting seat 40 being arranged from top to bottom along the height direction of the winding device. As mentioned above, when the first driving member 10 is arranged on the top of the box 201, the space in the height direction of the winding device can be reasonably utilized, thereby increasing the length of the unwinding device 01 along the second direction.

[0063] In order to enable the output shaft 203 to achieve air intake while transmitting torque, in some embodiments, the reduction mechanism 20 also includes an air intake connector 70, which is rotatably disposed on the output shaft 203 and connected to the first air duct 204, and the air intake connector 70 is used to connect to the air supply device.

[0064] The winding device may include an air supply device, which can provide a stable air source to the output shaft 203 to ensure that the output shaft 203 can continuously supply air to the air shaft 30 during the unwinding process, so that the air shaft 30 is in a state of diameter expansion to tighten the electrode material coil. Optionally, the air supply device can be an air pump.

[0065] The air inlet connector 70 may include a fixed portion and a rotating portion rotatably connected to the fixed portion, the rotating portion and the fixed portion both include a gas channel, and the gas channels of the two are connected. The rotating portion is connected to the output shaft 203, and the gas channel in the rotating portion is connected to the first gas channel 204, the fixed portion is connected to the air supply device, and the gas channel in the fixed portion is connected to the air supply device. In this way, when the output shaft 203 rotates, the rotating portion of the air inlet connector 70 can rotate with the output shaft, so it will not interfere with the rotation of the output shaft 203. A sealed bearing can be provided between the rotating portion and the fixed portion, and the rotating portion is rotatably connected to the fixed portion through the sealed bearing, and it is ensured that the air inlet connector 70 has good sealing performance to efficiently transmit gas.

[0066] Furthermore, in order to improve the transmission efficiency of the gas, a seal may be provided between the rotating portion of the gas inlet connector 70 and the output shaft 203 to further reduce the leakage of the gas during the transmission process.

[0067] Furthermore, the air inlet connector 70 is disposed at the axial end of the output shaft 203 and is located at the end of the output shaft 203 away from the inflatable shaft 30 , so that the space on the side of the output shaft 203 away from the inflatable shaft 30 can be reasonably utilized.

[0068] A second aspect of the embodiments of the present application further provides a winding device, which includes an unwinding device 01 as in any of the above embodiments.

[0069] Specifically, the winding device also includes a winding device arranged downstream of the unwinding device 01, the unwinding device 01 is used to unwind and output the electrode tape to the downstream winding device, and the winding device is used to wind the tape to form a battery cell.

[0070] It can be understood that the winding device using the above embodiment has all the technical effects of the unwinding device 01 of the above embodiment, which will not be described in detail here.

[0071] 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 it. 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 with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A reeling device, characterized in that: include: a first driving member; A speed reduction mechanism, the speed reduction mechanism comprising an input shaft and an output shaft, the driving shaft of the first driving member is connected to the input shaft, the input shaft is drivingly connected to the output shaft, and the output shaft comprises a first air passage; An inflatable shaft, the inflatable shaft is connected to the output shaft along the axial direction of the output shaft, and the inflatable shaft includes a second air channel connected to the first air channel.

2. The unwinding device according to claim 1, characterized in that: The deceleration mechanism further comprises: a housing, wherein the input shaft and at least a portion of the output shaft are disposed; The first transmission assembly is disposed in the housing, and the input shaft and the output shaft are transmission-connected via the first transmission assembly.

3. The unwinding device according to claim 2, characterized in that: The driving shaft of the first driving member is coaxially arranged with the input shaft, and the input shaft and the output shaft are arranged in the housing at intervals along a first direction, and the first direction is perpendicular to the axial directions of the input shaft and the output shaft.

4. The unwinding device according to claim 2, characterized in that: The first driving member is disposed on the housing, the driving shaft of the first driving member and the rotation axis of the input shaft are perpendicular to each other, and the speed reduction mechanism further includes: The second transmission assembly is arranged in the housing, and the driving shaft of the first driving member is transmission-connected with the input shaft through the second transmission assembly.

5. The unwinding device according to claim 4, characterized in that: The second transmission assembly includes a bevel gear set, which includes a first bevel gear and a second bevel gear. The rotation axes of the first bevel gear and the second bevel gear are perpendicular to each other. The first bevel gear is arranged on the driving shaft of the first driving member, and the second bevel gear is arranged on the input shaft.

6. The unwinding device according to claim 2, characterized in that: The unwinding device also includes: A mounting seat, wherein the box body is movably arranged on the mounting seat; The second driving member is arranged on the mounting seat, and the second driving member can drive the box body to reciprocate along the axial direction of the inflatable shaft relative to the mounting seat.

7. The unwinding device according to claim 6, characterized in that: The mounting seat is provided with one of a slide rail or a slider, the unwinding device further comprises a mounting plate, the mounting plate is provided with the other of the slide rail or the slider, the slide rail and the slider are slidably matched; The box body is arranged on the mounting plate, and the second driving member is connected to the mounting plate and drives the mounting plate to reciprocate relative to the mounting seat along the axial direction of the inflatable shaft.

8. The unwinding device according to any one of claims 1 to 7, characterized in that: The deceleration mechanism further comprises: An air intake connector is rotatably disposed on the output shaft and is in communication with the first air passage, and is used to connect to an air supply device.

9. The unwinding device according to claim 8, characterized in that: The air inlet connector is located at the end of the output shaft, and along the axial direction of the output shaft, the air inlet connector is away from the inflatable shaft.

10. A winding device, characterized in that: include: An unwinding device as claimed in any one of claims 1 to 9.

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