Unwinding mechanism and coating equipment

Abstract

The utility model discloses an unwinding mechanism and coating equipment, and relates to the technical field of power batteries, the unwinding mechanism comprises a driving part, a winding drum and an adapter, the driving part comprises a driving part and a clamping part in transmission connection with the driving part; the winding drum is provided with a mounting cavity; a mounting cavity is formed in the winding drum, the adapter is mounted in the mounting cavity, a mounting hole is formed in the adapter, the clamping part is mounted in the mounting hole, and the clamping part and the winding drum are both in transmission connection with the adapter. The unwinding mechanism can be used for winding drums of different sizes, the application range of the unwinding mechanism is widened, the unwinding mechanism can be installed on the winding drums of the winding mechanism, pole pieces on the winding drums of the winding mechanism can be subjected to rewinding treatment, and labor hour waste and material waste caused by manual cutting are avoided.

Description

Technical Field

[0001] The present application relates to the technical field of power batteries, and in particular to an unwinding mechanism and a coating device. Background Art

[0002] In the coating process of battery production, the substrate of the electrode needs to be unwound through a unwinding mechanism, and after the coating is completed, the electrode formed by the coating is rolled up through a winding mechanism. When an abnormality occurs in the winding, the usual practice is to manually cut off the electrode on the winding mechanism and scrap it, resulting in material waste. Utility Model Content

[0003] The main purpose of this application is to propose a unwinding mechanism and coating equipment, aiming to at least improve the technical problem of abnormal winding of materials in the coating process in the related technology, which causes material waste.

[0004] To achieve the above-mentioned purpose, according to some embodiments of the present application, the present application provides a reeling mechanism, including a driving member, a reel and a adapter, the driving member including a driving part and a clamping part transmission-connected to the driving part; the reel is provided with an installation cavity; the adapter is installed in the installation cavity, the adapter is provided with a mounting hole, the clamping part is installed in the mounting hole, and the clamping part and the reel are both transmission-connected to the adapter.

[0005] By setting an adapter, the adapter is installed in the installation cavity of the reel, and a mounting hole for installing the clamping part is provided on the adapter. The clamping part and the reel are both connected to the adapter in a transmission manner. The clamping part and the reel are respectively connected through the adapter, which can play a connecting role when the clamping part and the reel do not match in size, so that the unwinding mechanism can be applied to reels of different sizes, and the adapter can also play a role in transmitting torque, so that the driving part can drive the reel to rotate through the adapter. This embodiment can be used for reels of different sizes, and can also be installed on the reel of the reeling mechanism. It can rewind the pole piece on the reel of the reeling mechanism, avoiding the waste of labor time and materials caused by manual cutting. In addition, the original unwinding mechanism is used for rewinding, and there is no need to set up an additional rewinding mechanism, which saves costs and reduces space occupation.

[0006] In some embodiments, the mounting cavity includes a channel and two mounting slots respectively connected to the two ends of the channel; the adapter includes a connecting rod and two connecting heads respectively arranged at the two ends of the connecting rod, the connecting rod is installed in the channel, the two connecting heads are respectively installed in the two mounting slots, each of the connecting heads is provided with the mounting hole, the number of the clamping parts is two, and one clamping part is provided in each mounting hole.

[0007] By providing two clamping parts and two connecting heads to drive the reel from both ends respectively, the uniformity of the force applied to the reel is improved, the connection strength is also improved, and the stability of the reel rotation can be improved.

[0008] In some embodiments, a first connecting key is provided on the outer wall surface of the connector, and a first key groove is provided on the side wall of the mounting groove to engage with the first connecting key; or,

[0009] A first key groove is provided on the outer wall surface of the connector, and a first connecting key that is snap-fitted with the first key groove is provided on the side wall of the mounting groove.

[0010] By setting a first connecting key on one of the outer wall surface of the connecting head and the side wall of the mounting groove, and setting a first key groove on the other, the distance from the connecting head to the reel is transferred through the cooperation of the first connecting key and the first key groove. The use of key cooperation can transmit a larger torque.

[0011] In some embodiments, a second connecting key is provided on the outer wall surface of the clamping portion, and a second key groove is correspondingly provided on the side wall of the groove of the mounting hole to engage with the second connecting key; or, a second key groove is provided on the outer wall surface of the clamping portion, and a second connecting key is correspondingly provided on the side wall of the groove of the mounting hole to engage with the second key groove.

[0012] By setting a second connecting key on one of the outer wall surface of the clamping part and the side wall of the groove of the mounting hole, and setting a second key groove on the other, the distance is transferred from the clamping part to the connecting head through the cooperation of the second connecting key and the second key groove, and the use of key cooperation can transmit a larger torque.

[0013] In some embodiments, the outer wall surface of the connecting head abuts against the side wall of the mounting groove, and the hole wall of the mounting hole abuts against the outer wall surface of the clamping portion.

[0014] By setting the outer wall surface of the connecting head to abut against the side wall of the installation groove, the hole wall of the installation hole abuts against the outer wall surface of the clamping part, and the transmission connection is achieved through friction. The connection method is simple and easy to manufacture.

[0015] In some embodiments, the groove side wall of the mounting groove includes a first sub-groove wall and a second sub-groove wall, the first sub-groove wall is arranged near the opening of the mounting groove, the first sub-groove wall extends along the central axis of the reel, and the second sub-groove wall extends from the side of the first sub-groove wall away from the opening toward the central axis of the reel, and the outer wall surface of the connecting head includes a first sub-wall and a second sub-wall connected to the first sub-wall, the first sub-groove wall abuts against the first sub-wall, and the second sub-groove wall abuts against the second sub-wall.

[0016] By setting the first sub-groove wall of the mounting groove to extend along the central axis of the reel, the second sub-groove wall extends from the side of the first sub-groove wall away from the opening toward the central axis of the reel, the first sub-groove wall of the connecting head abuts against the first sub-wall, and the second sub-groove wall abuts against the second sub-wall. The abutment is achieved through two wall surfaces, a cylindrical wall and a conical wall, which can increase the abutment area and make the connection more secure.

[0017] In some embodiments, the mounting groove includes a first sub-groove and a second sub-groove that are interconnected, the first sub-groove is arranged close to the opening of the mounting groove, the first sub-groove is an equal-diameter groove, the second sub-groove is a conical groove, and the inner diameter of the second sub-groove gradually decreases from the first sub-groove toward the central axis of the reel, the outer wall surface of the connecting head includes a first sub-wall and a second sub-wall connected to the first sub-wall, the groove wall of the first sub-groove abuts against the first sub-wall, and the groove wall of the second sub-groove abuts against the second sub-wall.

[0018] By setting the first sub-groove of the mounting groove to extend along the central axis of the reel, the second sub-groove extends from the side of the first sub-groove away from the opening toward the central axis of the reel, the first sub-groove of the connecting head abuts against the first sub-wall, and the second sub-groove abuts against the second sub-wall. The abutment is achieved through a cylindrical wall surface and a conical wall surface, which can increase the abutment area and make the connection more secure.

[0019] In some embodiments, the reel includes a winding portion and two connecting portions located on both sides of the winding portion, the winding portion is provided with the channel, each connecting portion is provided with the mounting groove, the adapter also includes a locking portion, the bottom surface of the mounting hole is provided with a connecting hole, the winding portion is provided with a mounting surface abutting the bottom surface, the connecting rod extends from the mounting surface to the connecting hole, and the locking portion is installed on the part of the connecting rod extending from the connecting hole to lock the connecting head to the connecting portion.

[0020] By setting the reel to include a winding part and a connecting part, the connecting rod passes through the connecting hole from the channel of the winding part, and the connecting head is installed on the connecting part through the installation and connection of the locking piece, thereby realizing the installation of the adapter on the reel.

[0021] In some embodiments, the locking member includes a locking nut, the portion of the connecting rod extending out of the connecting hole is provided with threads, and the locking nut is threadedly connected to the connecting rod through the threads.

[0022] By setting locking nuts at both ends of the connecting rod, adjustments can be made from both ends of the connecting rod to firmly fix the adapter on the reel, and the tightness can also be adjusted.

[0023] In some embodiments, both of the connecting heads are detachably connected to the connecting rod.

[0024] By providing a detachable connection, the installation and removal of the adapter are facilitated.

[0025] 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

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 the structures shown in these drawings without paying any creative work.

[0027] Figure 1 A schematic structural diagram of a vehicle according to some embodiments of the present application;

[0028] Figure 2 Schematic diagram of the exploded structure of batteries according to some embodiments of the present application;

[0029] Figure 3 This is a structural schematic diagram of an unwinding mechanism in some embodiments of the present application;

[0030] Figure 4 A schematic structural diagram of a reel of an unwinding mechanism in some embodiments of the present application;

[0031] Figure 5 This is a schematic structural diagram of an adapter of an unwinding mechanism in some embodiments of the present application;

[0032] Figure 6 This is a partial structural diagram of an adapter of an unwinding mechanism in some embodiments of the present application;

[0033] Figure 7 This is another structural schematic diagram of the reel of the unwinding mechanism in some embodiments of the present application;

[0034] Figure 8 This is another structural schematic diagram of the reel of the unwinding mechanism in some embodiments of the present application;

[0035] Figure 9 This is a partial structural diagram of the unwinding mechanism in some embodiments of the present application;

[0036] Figure 10 This is another structural schematic diagram of the unwinding mechanism in some embodiments of the present application.

[0037] Description of Figure Numbers:

[0038] 1000, vehicle;

[0039] 100, battery; 200, controller; 300, motor;

[0040] 10. Box body; 11. First part; 12. Second part;

[0041] 20. Battery cells;

[0042] 1. Unwinding mechanism; 2. Driving member; 21. Driving part; 22. Clamping part; 3. Reel; 31. Winding part; 32. Connecting part; 4. Adapter; 41. Connecting rod; 42. Connecting head; 421. First sub-wall; 422. Second sub-wall; 43. Locking member; 431. Locking nut; 432. Elastic gasket; 5. Mounting cavity; 51. Passage; 52. Mounting groove; 521. First sub-groove wall; 522. Second sub-groove wall; 523. First sub-groove; 524. Second sub-groove; 6. Mounting hole; 7. First connecting key; 8. First keyway.

[0043] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0044] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in this embodiment. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0045] It should be noted that all directional indications in this embodiment (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0046] In addition, the terms "first," "second," and so on, used in this application are for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly specifying the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0047] In this application, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0048] In addition, the technical solutions of the various embodiments of this application may be combined with each other, but this must be based on the fact that they can be implemented by a person of ordinary skill in the art. If the combination of technical solutions is mutually inconsistent or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this application. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0049] The descriptions of directions such as "up", "down", "front", "back", "left" and "right" in this application are based on the directions shown in the accompanying drawings and are only used to explain the relative positional relationship between the components in the postures shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0050] Currently, market developments indicate that power batteries are becoming increasingly widely used. They are not only used in energy storage systems such as hydropower, thermal, wind, and solar power plants, but are also widely used in electric vehicles like electric bicycles, electric motorcycles, and electric vehicles, as well as in military equipment and aerospace. As power battery applications continue to expand, market demand is also growing.

[0051] The electrode sheet is an important component of the battery cell and includes positive and negative electrode sheets. The positive electrode sheet includes a positive electrode current collector and a positive electrode active material layer. The positive electrode active material layer is coated on the surface of the positive electrode current collector. The positive electrode current collector not coated with the positive electrode active material layer protrudes from the positive electrode current collector coated with the positive electrode active material layer. The positive electrode current collector not coated with the positive electrode active material layer serves as the positive electrode tab. Taking the battery cell of a lithium-ion battery as an example, the material of the positive electrode current collector can be aluminum, and the positive electrode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide. The negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer. The negative electrode active material layer is coated on the surface of the negative electrode current collector. The negative electrode current collector not coated with the negative electrode active material layer protrudes from the negative electrode current collector coated with the negative electrode active material layer. The negative electrode current collector not coated with the negative electrode active material layer serves as the negative electrode tab. During manufacturing, the positive and negative electrode sheets are separated by separator paper and then rolled into the desired shape.

[0052] The coating equipment includes a coating mechanism, an unwinding mechanism and a winding mechanism. The unwinding mechanism is used to deliver the wound electrode to the coating mechanism, the coating mechanism is used to coat the active material on the electrode, and the winding mechanism is used to wind the coated electrode.

[0053] When production abnormalities occur, the electrodes that have been wound up by the winding mechanism are generally cut off and scrapped manually, which not only wastes manpower but also increases material costs.

[0054] After careful research, the applicant discovered that, due to production needs, the size of the winding chuck of the winding mechanism is generally larger than the size of the unwinding chuck of the unwinding mechanism. For example, the size of the winding chuck is 8 inches, corresponding to the installation of the winding drum, and the size of the unwinding chuck is 6 inches, corresponding to the installation of the unwinding drum. The different sizes of the two chucks are mainly due to the increase in the thickness of the electrode after passing through the coating mechanism and the need for winding efficiency. When an abnormal situation occurs, it may be necessary to reprocess the electrode wound by the winding mechanism, that is, to rewind the wound electrode, such as re-coating the electrode. However, since the original size of the winding chuck is larger than that of the unwinding chuck, for example, the original installation position of the winding chuck is the 8-inch mounting hole on the winding drum, which is used to install the 8-inch winding chuck. Now the 6-inch unwinding chuck needs to be installed in the 8-inch mounting hole on the winding drum. There will be a large gap between the unwinding chuck and the mounting hole of the winding drum, that is, the unwinding chuck of the unwinding mechanism cannot clamp the winding drum, and cannot drive the winding drum to rotate well, resulting in the winding drum being unable to be used on the unwinding mechanism, and it is difficult to rewind the abnormal material on the winding drum. The material on the winding drum can only be cut off and scrapped.

[0055] It is worth mentioning that in the related technology, a rewinding machine is used for rewinding. However, the use of a rewinding machine not only increases the purchase cost of the equipment, but also requires a larger location for installation, which takes up a large space.

[0056] Please refer to Figure 1 , Figure 1 A schematic structural diagram of a vehicle 1000 provided for some embodiments of the present application. The electrical device may be the vehicle 1000, and the vehicle 1000 may be a fuel vehicle, a gas vehicle, or a new energy vehicle. The new energy vehicle may be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle, etc. A battery 100 is provided inside the vehicle 1000, and the battery 100 may be provided at the bottom, head, or tail of the vehicle 1000. The battery 100 may be used to power the vehicle 1000, for example, the battery 100 may serve as an operating power source for the vehicle 1000. The vehicle 1000 may further include a controller 200 and a motor 300, and the controller 200 is used to control the battery 100 to power the motor 300, for example, for starting, navigating, and operating power requirements of the vehicle 1000 during driving.

[0057] In some embodiments of the present application, the battery 100 can serve not only as an operating power source for the vehicle 1000, but also as a driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0058] Please refer to Figure 2 , Figure 2 This is a schematic diagram of the exploded structure of a battery 100 provided in some embodiments of the present application. The battery 100 includes a housing 10 and battery cells 20, with the battery cells 20 housed within the housing 10. The housing 10 provides storage space for the battery cells 20 and can have various structures. In some embodiments, the housing 10 can include a first portion 11 and a second portion 12, which overlap each other and together define a storage space for the battery cells 20. The second portion 12 can be a hollow structure with one end open. The first portion 11 can be a plate-like structure, with the first portion 11 overlapping the open side of the second portion 12, so that the first portion 11 and the second portion 12 together define a storage space. Alternatively, the first portion 11 and the second portion 12 can each be a hollow structure with one end open, with the open side of the first portion 11 overlapping the open side of the second portion 12. Of course, the housing 10 formed by the first portion 11 and the second portion 12 can have various shapes, such as a cylinder or a rectangular parallelepiped.

[0059] In the battery 100, there may be multiple cells 20, and the multiple cells 20 may be connected in series, in parallel, or in a hybrid connection. A hybrid connection refers to a combination of series and parallel connections among the multiple cells 20. The multiple cells 20 may be directly connected in series, in parallel, or in a hybrid connection, and then the entire battery 20 may be housed within the housing 10. Alternatively, the battery 100 may be constructed by first connecting multiple cells 20 in series, in parallel, or in a hybrid connection to form a battery module, which is then connected in series, in parallel, or in a hybrid connection to form a single unit housed within the housing 10. The battery 100 may also include other structures, such as a busbar assembly for electrically connecting the multiple cells 20.

[0060] Each battery cell 20 can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 20 can be cylindrical, flat, rectangular, or in other shapes.

[0061] The present application provides an unwinding mechanism 1 and a coating device for manufacturing a battery 100 .

[0062] Please refer to Figures 3 to 5According to some embodiments of the present application, the present application provides a reeling mechanism 1, including a driving member 2, a reel 3 and an adapter 4, the driving member 2 includes a driving portion 21 and a clamping portion 22 transmission-connected to the driving portion 21; the reel 3 is provided with a mounting cavity 5; the adapter 4 is installed in the mounting cavity 5, the adapter 4 is provided with a mounting hole 6, the clamping portion 22 is installed in the mounting hole 6, and the clamping portion 22 and the reel 3 are both transmission-connected to the adapter 4.

[0063] The driving member 2 is a component for driving the reel 3 to rotate. Specifically, the driving member 2 includes a driving portion 21 and a clamping portion 22. The driving portion 21 is a power source for providing a driving force, specifically for driving the clamping portion 22 to rotate. The clamping portion 22 may be a chuck, which is installed in the reel 3 and transmits torque to drive the reel 3 to rotate. The main body of the reel 3 is generally cylindrical, and the pole piece is wound on the cylindrical surface. In the embodiment of the present application, an adapter 4 is provided. The adapter 4 is used to be installed in the installation cavity 5 of the reel 3, and is respectively connected to the clamping portion 22 and the reel 3 for transmission, and is used to transmit the torque of the clamping portion 22 to the reel 3 through the adapter 4, thereby driving the reel 3 to rotate.

[0064] When the winding mechanism rolls the material abnormally and the pole piece on the reel 3 needs to be rewound, the reel 3 needs to be installed on the clamping part 22 of the unwinding mechanism 1. Since the size of the reel 3 of the winding mechanism is relatively large, there will be a gap if it is directly installed on the clamping part 22 of the unwinding mechanism 1, and the reel 3 cannot be driven to rotate well. Therefore, the role of transmitting torque is played by the adapter 4. Specifically, a mounting cavity 5 is provided on the reel 3, and the adapter 4 is installed in the mounting cavity 5. At the same time, a mounting hole 6 is provided on the adapter 4. Obviously, the size of the mounting hole 6 is adapted to the size of the clamping part 22. For example, the clamping part 22 is 6 inches, and the mounting hole 6 is designed to be a size that matches the clamping part 22, while the mounting cavity 5 of the reel 3 may be 8 inches. The outer wall surface of the adapter 4 provided in the mounting cavity 5 of the reel 3 is a size that matches the mounting cavity 5. With this design, when the clamping portion 22 is 6 inches and an 8-inch reel 3 needs to be installed, it is only necessary to install the adapter 4. If both the clamping portion 22 and the reel 3 are 8 inches, the adapter 4 can be removed and installed directly.

[0065] By setting an adapter 4, the adapter 4 is installed in the installation cavity 5 of the reel 3, and a mounting hole 6 for installing the clamping portion 22 is provided on the adapter 4. The clamping portion 22 and the reel 3 are both connected to the adapter 4 in a transmission manner. The adapter 4 connects the clamping portion 22 and the reel 3 respectively, and can play a connecting role when the clamping portion 22 and the reel 3 do not match in size, so that the unwinding mechanism 1 can be applied to reels 3 of different sizes, and the adapter 4 can also play a role in transmitting torque, so that the driving member 2 can drive the reel 3 to rotate through the adapter 4. This embodiment can be used for reels 3 of different sizes, and can also be installed on the reel 3 of the reeling mechanism, and can rewind the pole piece on the reel 3 of the reeling mechanism, thereby avoiding the waste of labor time and material caused by manual cutting. In addition, the original unwinding mechanism 1 is used for rewinding, and there is no need to set up an additional rewinding mechanism, which saves costs and reduces space occupancy.

[0066] Please refer to Figures 3 to 5 In some embodiments, the mounting cavity 5 includes a channel 51 and two mounting grooves 52 respectively connected to the two ends of the channel 51; the adapter 4 includes a connecting rod 41 and two connecting heads 42 respectively arranged at the two ends of the connecting rod 41, the connecting rod 41 is installed in the channel 51, and the two connecting heads 42 are respectively installed in the two mounting grooves 52, each connecting head 42 is provided with a mounting hole 6, the number of the clamping parts 22 is two, and a clamping part 22 is provided in each mounting hole 6.

[0067] There are two clamping parts 22, and the two clamping parts 22 are respectively arranged at the two ends of the central axis of the reel 3. The mounting cavity 5 includes a channel 51 that passes through the middle part of the reel 3 and mounting grooves 52 arranged at both ends of the channel 51. The connecting rod 41 is arranged in the channel 51, and the connecting heads 42 respectively arranged at both ends of the connecting rod 41 are respectively arranged in the mounting grooves 52, that is, one connecting head 42 is provided in one mounting groove 52, and the connecting head 42 is provided with a mounting hole 6 facing the clamping part 22. Obviously, since the connecting head 42 is provided in the mounting groove 52, the opening size of the mounting hole 6 is smaller than the opening size of the mounting groove 52. The mounting hole 6 is used to install the clamping part 22. The clamping part 22 rotates under the action of the driving part 21, and the rotational torque is transmitted to the reel 3 through the adapter 4, driving the reel 3 to rotate.

[0068] By providing two clamping parts 22 and two connecting heads 42 to drive the reel 3 from both ends respectively, the uniformity of the force applied to the reel 3 is improved, the connection strength is also improved, and the stability of the rotation of the reel 3 can be improved.

[0069] In some embodiments, a first connecting key 7 is provided on the outer wall surface of the connector 42, and a first key groove 8 is provided on the side wall of the mounting groove 52 to engage with the first connecting key 7; or,

[0070] Please refer to Figure 4 and Figure 5 A first key groove 8 is provided on the outer wall surface of the connecting head 42 , and a first connecting key 7 that is engaged with the first key groove 8 is provided on the side wall of the installation groove 52 .

[0071] The connector 42 and the reel 3 are connected in a transmission manner, specifically by connecting the connector 42 to the mounting slot 52. The transmission torque is transmitted to the mounting slot 52 via the outer wall of the connector 42. The first connecting key 7 and the first key slot 8 are provided to achieve torque transmission. Specifically, the first connecting key 7 can be provided on the outer wall of the connector 42, and the first key slot 8 can be provided on the sidewall of the mounting slot 52 to engage with the first connecting key 7; or the first key slot 8 can be provided on the outer wall of the connector 42, and the first connecting key 7 can be provided on the sidewall of the mounting slot 52 to engage with the first key slot 8. The first connecting key 7 is actually a protrusion protruding from the outer wall of the connector 42 and extending toward the mounting slot 52, while the first key slot 8 is a recessed portion; or the first connecting key 7 is a protrusion protruding from the sidewall of the mounting slot 52 and extending toward the connector 42, while the first key slot 8 is a recessed portion provided on the connector 42. The recessed and protruding portions are connected to achieve torque transmission.

[0072] By setting a first connecting key 7 on one of the outer wall surface of the connecting head 42 and the side wall of the mounting groove 52, and setting a first key groove 8 on the other, the distance from the connecting head 42 to the reel 3 is transferred through the cooperation of the first connecting key 7 and the first key groove 8, and the use of key cooperation can transmit a larger torque.

[0073] In some embodiments, a second connecting key is provided on the outer wall surface of the clamping portion 22, and a second key groove is correspondingly provided on the side wall of the mounting hole 6 to engage with the second connecting key; or,

[0074] A second key groove is provided on the outer wall surface of the clamping portion 22 , and a second connecting key that is engaged with the second key groove is correspondingly provided on the groove side wall of the mounting hole 6 .

[0075] The connector 42 and the clamping portion 22 are connected in a transmission manner. Specifically, the mounting hole 6 of the connector 42 is connected to the clamping portion 22, and the transmission torque is transmitted through the outer wall of the clamping portion 22 to the mounting hole 6 and then to the adapter 4. The second connecting key and the second keyway are provided to achieve torque transmission. Specifically, the second connecting key can be provided on the outer wall of the clamping portion 22, and the side wall of the mounting hole 6 is provided with a second keyway that engages with the second connecting key; or the second keyway is provided on the outer wall of the clamping portion 22, and the side wall of the mounting hole 6 is provided with a second connecting key that engages with the second keyway. The second connecting key is actually a protrusion protruding from the outer wall of the clamping portion 22 and extending toward the mounting hole 6, while the second keyway is a recessed portion; or the second connecting key is a protrusion protruding from the side wall of the mounting hole 6 and extending toward the clamping portion 22, while the second keyway is a recessed portion provided on the clamping portion 22. The recessed portion and the protruding portion are connected to achieve torque transmission.

[0076] By setting a second connecting key on one of the outer wall surface of the clamping part 22 and the groove side wall of the mounting hole 6, and setting a second key groove on the other, the distance from the clamping part 22 to the connecting head 42 is transferred through the cooperation of the second connecting key and the second key groove, and the use of key cooperation can transmit a larger torque.

[0077] In some embodiments, the outer wall surface of the connector 42 abuts against the side wall of the mounting groove 52 , and the hole wall of the mounting hole 6 abuts against the outer wall surface of the clamping portion 22 .

[0078] The abutment here refers to the fact that at least a majority of the entire outer wall surface of the connector 42 and at least a majority of the entire side wall surface of the mounting groove 52 are in contact with each other, and a certain positive pressure exists between them, and at least a majority of the entire wall surface of the mounting hole 6 and at least a majority of the entire outer wall surface of the clamping portion 22 are in contact with each other, and a certain positive pressure exists between them. In this way, the torque can be transmitted through the static friction between the two, so that the clamping portion 22 can drive the connector 42 of the adapter 4 to rotate together, and the connector 42 can drive the reel 3 to rotate together, thereby achieving a synchronous transmission connection. The abutment here can be set to a tight fit relationship or a friction connection relationship.

[0079] By setting the outer wall surface of the connecting head 42 to abut against the side wall of the installation groove 52, the hole wall of the installation hole 6 abuts against the outer wall surface of the clamping part 22, and the transmission connection is achieved through the static friction between the two. The connection method is simple and easy to manufacture.

[0080] Please refer to Figure 6 and Figure 7In some embodiments, the groove side wall of the mounting groove 52 includes a first sub-groove wall 521 and a second sub-groove wall 522. The first sub-groove wall 521 is arranged near the opening of the mounting groove 52, and the first sub-groove wall 521 extends along the central axis of the reel 3. The second sub-groove wall 522 extends from the side of the first sub-groove wall 521 away from the opening toward the central axis of the reel 3. The outer wall surface of the connecting head 42 includes a first sub-wall 421 and a second sub-wall 422 connected to the first sub-wall 421. The first sub-groove wall 521 abuts against the first sub-wall 421, and the second sub-groove wall 522 abuts against the second sub-wall 422.

[0081] The first sub-groove wall 521 and the second sub-groove wall 522 are two wall surfaces connected end to end. The first sub-groove wall 521 extends from one side of the second sub-groove wall 522 to the opening of the mounting groove 52. The first sub-groove wall 521 can be a cylindrical surface, and the central axis of the cylindrical surface coincides with the central axis of the reel 3. The second sub-groove wall 522 can be a conical wall surface, and the cross-sectional diameter of the conical wall surface gradually decreases in the direction away from the second sub-groove wall 522. From the effect on the cross-sectional view, the wall surface of the first sub-groove wall 521 is a straight line parallel to the central axis, and the second sub-groove wall 522 is an inclined straight line extending toward the central axis. The outer wall surface of the connecting head 42 is also provided with a first sub-wall 421 adapted to the first sub-groove wall 521, and a second sub-wall 422 adapted to the second sub-groove wall 522. The first sub-groove wall 521 abuts against the first sub-wall 421, and the second sub-groove wall 522 abuts against the second sub-wall 422. It can be that at least most of the wall surface of the first sub-groove wall 521 is in contact with at least most of the wall surface of the first sub-wall 421, and at least most of the wall surface of the second sub-groove wall 522 is in contact with at least most of the wall surface of the second sub-wall 422. Increasing the abutment area can improve the connection strength and transmission stability.

[0082] By setting the first sub-groove wall 521 of the installation groove 52 to extend along the central axis of the reel 3, the second sub-groove wall 522 extends from the side of the first sub-groove wall 521 away from the opening toward the central axis of the reel 3, the first sub-groove wall 521 of the connecting head 42 abuts against the first sub-wall 421, and the second sub-groove wall 522 abuts against the second sub-wall 422. The abutment is achieved by two wall surfaces, a cylindrical wall and a conical wall, which can increase the abutment area and make the connection more secure.

[0083] Please refer to Figure 6 and Figure 8In some embodiments, the mounting groove 52 includes a first sub-groove 523 and a second sub-groove 524 that are interconnected. The first sub-groove 523 is arranged near the opening of the mounting groove 52. The first sub-groove 523 is an equal-diameter groove, and the second sub-groove 524 is a conical groove. The inner diameter of the second sub-groove 524 gradually decreases from the first sub-groove 523 toward the central axis of the reel 3. The outer wall surface of the connecting head 42 includes a first sub-wall 421 and a second sub-wall 422 connected to the first sub-wall 421. The groove wall of the first sub-groove 523 abuts against the first sub-wall 421, and the groove wall of the second sub-groove 524 abuts against the second sub-wall 422.

[0084] The first sub-groove 523 and the second sub-groove 524 are two grooves connected end to end. The first sub-groove 523 extends to the opening of the mounting groove 52 away from the side of the second sub-groove 524. The first sub-groove 523 can be a cylinder, and the central axis of the cylinder coincides with the central axis of the reel 3. The second sub-groove 524 can be a cone, and the cross-sectional diameter of the cone gradually decreases in the direction away from the second sub-groove 524. From the effect on the cross-sectional view, the wall surface of the first sub-groove 523 is a straight line parallel to the central axis, and the second sub-groove 524 is an inclined straight line extending toward the central axis. The outer wall surface of the connector 42 is also provided with a first sub-wall 421 adapted to the first sub-groove 523, and a second sub-wall 422 adapted to the second sub-groove 524. The first sub-groove 523 abuts against the first sub-wall 421, and the second sub-groove 524 abuts against the second sub-wall 422, so that at least most of the wall surface of the first sub-groove 523 can be fitted and abutted against at least most of the wall surface of the first sub-wall 421, and at least most of the wall surface of the second sub-groove 524 can be fitted and abutted against at least most of the wall surface of the second sub-wall 422. Increasing the abutment area can improve the connection strength and transmission stability.

[0085] By setting the first sub-groove 523 of the mounting groove 52 to extend along the central axis of the reel 3, the second sub-groove 524 extends from the side of the first sub-groove 523 away from the opening toward the central axis of the reel 3, the first sub-groove 523 of the connecting head 42 abuts against the first sub-wall 421, and the second sub-groove 524 abuts against the second sub-wall 422. The abutment is achieved through a cylindrical wall surface and a conical wall surface, which can increase the abutment area and make the connection more secure.

[0086] Please refer to Figure 8 and Figure 9 In some embodiments, the reel 3 includes a winding portion 31 and two connecting portions 32 located on both sides of the winding portion 31, the winding portion 31 is provided with a channel 51, and each connecting portion 32 is provided with a mounting groove 52. The adapter 4 also includes a locking member 43, and the bottom surface of the mounting hole 6 is provided with a connecting hole. The winding portion 31 is provided with a mounting surface abutting the bottom surface. The connecting rod 41 extends from the mounting surface to the connecting hole, and the locking member 43 is installed on the part of the connecting rod 41 extending from the connecting hole to lock the connecting head 42 to the connecting portion 32.

[0087] The winding portion 31 refers to the part of the reel 3 used for winding the pole piece. It is generally cylindrical and located in the middle position of the reel 3. The winding portion 31 is provided with a through channel 51 for installing the connecting rod 41. The mounting groove 52 is provided on the connecting portion 32. The connecting head 42 is provided with a connecting hole that passes through the bottom surface of the mounting hole 6. The side of the winding portion 31 facing the connecting portion 32 is the mounting surface. The connecting rod 41 extends from the channel 51 through the connecting hole and extends into the mounting hole 6. The locking piece 43 is installed on the connecting rod 41, and the connecting head 42 is installed on the mounting surface of the connecting portion 32 and the winding portion 31.

[0088] By setting the reel 3 to include a winding part 31 and a connecting part 32, the connecting rod 41 passes through the connecting hole from the channel 51 of the winding part 31, and the connecting head 42 is installed on the connecting part 32 through the locking member 43, thereby realizing the installation of the adapter 4 on the reel 3.

[0089] Please refer to Figure 9 In some embodiments, the locking member 43 includes a locking nut 431 , the portion of the connecting rod 41 extending out of the connecting hole is provided with a thread, and the locking nut 431 is threadedly connected to the connecting rod 41 .

[0090] Threads are provided at both ends of the connecting rod 41, and there are two locking members 43, which can be two locking nuts 431. The two locking nuts 431 are respectively installed at both ends of the connecting rod 41. By screwing the two locking nuts 431, the two connecting rods 41 at both ends can be fastened to the reel 3, and the tightness can also be adjusted. Of course, refer to Figure 6 The locking member 43 may further include an elastic gasket 432 , which is mounted on the connecting rod 41 .

[0091] By arranging locking nuts 431 at both ends of the connecting rod 41 , adjustments can be made from both ends of the connecting rod 41 to secure the adapter 4 to the reel 3 , and the tightness can also be adjusted.

[0092] In some embodiments, both connectors 42 are detachably connected to the connecting rod 41 .

[0093] Specifically, a removable connection is achieved through the locking member 43. For disassembly, first remove the locking nut 431, then remove the connectors 42 at both ends, and finally remove the connecting rod 41. For installation, first install the connecting rod 41 into the channel 51, then install the two connectors 42 into the mounting slots 52 and tighten them with the locking nut 431. This removable connection facilitates installation and removal of the adapter 4.

[0094] In some embodiments, the connector 42 of the adapter 4 can be designed according to the length of the reel 3. Figure 10When the reel 3 is shorter, a longer connector 42 can be designed so that the unwinding mechanism 1 can rewind the shorter reel 3. In this way, the compatibility of the unwinding mechanism 1 with respect to the length of the reel 3 is improved.

[0095] According to some embodiments of the present application, the present application provides a winding mechanism, including a driving member 2, a reel 3 and an adapter 4, wherein the driving member 2 includes a driving portion 21 and a clamping portion 22 that is transmission-connected to the driving portion 21; the reel 3 is provided with a mounting cavity 5; the adapter 4 is installed in the mounting cavity 5, the adapter 4 is provided with a mounting hole 6, the clamping portion 22 is installed in the mounting hole 6, and the clamping portion 22 and the reel 3 are both transmission-connected to the adapter 4. Specifically, the mounting cavity 5 includes a channel 51 and two mounting slots 52 that are respectively connected to both ends of the channel 51; the adapter 4 includes a connecting rod 41 and two connecting heads 42 that are respectively provided at both ends of the connecting rod 41, the connecting rod 41 is installed in the channel 51, the two connecting heads 42 are respectively installed in the two mounting slots 52, each connecting head 42 is provided with a mounting hole 6, the number of the clamping portions 22 is two, and one clamping portion 22 is provided in each mounting hole 6. Specifically, a first keyway 8 is provided on the outer wall surface of the connector 42, and a first connecting key 7 is provided on the sidewall of the mounting groove 52 to engage with the first keyway 8. Furthermore, the sidewall of the mounting groove 52 includes a first sub-groove wall 521 and a second sub-groove wall 522. The first sub-groove wall 521 is provided near the opening of the mounting groove 52 and extends along the central axis of the reel 3. The second sub-groove wall 522 extends from the side of the first sub-groove wall 521 away from the opening toward the central axis of the reel 3. The outer wall surface of the connector 42 includes a first sub-wall 421 and a second sub-wall 422 connected to the first sub-wall 421. The first sub-groove wall 521 abuts against the first sub-wall 421, and the second sub-groove wall 522 abuts against the second sub-wall 422. More specifically, the reel 3 includes a winding portion 31 and two connecting portions 32 located on both sides of the winding portion 31, the winding portion 31 is provided with a channel 51, and each connecting portion 32 is provided with a mounting groove 52. The adapter 4 also includes a locking member 43, the bottom surface of the mounting hole 6 is provided with a connecting hole, the winding portion 31 is provided with a mounting surface abutting the bottom surface, the connecting rod 41 extends from the mounting surface to the connecting hole, the locking member 43 includes a locking nut 431, the portion of the connecting rod 41 extending from the connecting hole is provided with a thread, and the locking nut 431 is screwed to the connecting rod 41 through a thread. This embodiment can be used for reels 3 of different sizes, and can also be installed on the reel 3 of the winding mechanism, and can rewind the pole piece on the reel 3 of the winding mechanism, thereby avoiding the waste of labor time and materials caused by manual cutting. In addition, the original unwinding mechanism 1 is used for rewinding, and there is no need to set up an additional rewinding mechanism, which saves costs and reduces space occupancy.

[0096] According to some embodiments of the present application, a coating device is provided. The coating device employs the unwinding mechanism 1 described above and also includes a coating mechanism for coating the active material on the electrode. Since the coating device includes any of the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by any of the above technical solutions, and no further description is given here.

[0097] The above description is merely an optional embodiment of the present application and does not limit the patent scope of the present application. Any equivalent structural transformation made by using the contents of the present application specification and drawings under the application concept of the present application, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present application.

Claims

1. A reeling mechanism, characterized in that: include: A driving member, comprising a driving portion and a clamping portion transmission-connected to the driving portion; A reel, wherein the reel is provided with a mounting cavity; An adapter is installed in the installation cavity, the adapter is provided with a mounting hole, the clamping portion is installed in the mounting hole, and the clamping portion and the reel are both transmission-connected to the adapter.

2. The unwinding mechanism according to claim 1, wherein: The mounting cavity includes a channel and two mounting grooves respectively connected to the two ends of the channel; the adapter includes a connecting rod and two connecting heads respectively arranged at the two ends of the connecting rod, the connecting rod is installed in the channel, and the two connecting heads are respectively installed in the two mounting grooves, each of the connecting heads is provided with the mounting hole, the number of the clamping parts is two, and one clamping part is provided in each mounting hole.

3. The unwinding mechanism according to claim 2, characterized in that: A first connecting key is provided on the outer wall surface of the connector, and a first key groove is provided on the side wall of the mounting groove to engage with the first connecting key; or A first key groove is provided on the outer wall surface of the connector, and a first connecting key that is snap-fitted with the first key groove is provided on the side wall of the mounting groove.

4. The unwinding mechanism according to claim 2, wherein: A second connecting key is provided on the outer wall surface of the clamping portion, and a second key groove for engaging with the second connecting key is correspondingly provided on the groove side wall of the mounting hole; or, A second key groove is provided on the outer wall surface of the clamping portion, and a second connecting key that is engaged with the second key groove is correspondingly provided on the groove side wall of the mounting hole.

5. The unwinding mechanism according to claim 2, characterized in that: The outer wall surface of the connecting head abuts against the groove side wall of the installation groove, and the hole wall of the installation hole abuts against the outer wall surface of the clamping portion.

6. The unwinding mechanism according to any one of claims 2 to 5, characterized in that: The groove side wall of the mounting groove includes a first sub-groove wall and a second sub-groove wall, the first sub-groove wall is arranged near the opening of the mounting groove, the first sub-groove wall extends along the central axis of the reel, and the second sub-groove wall extends from the side of the first sub-groove wall away from the opening toward the central axis of the reel, and the outer wall surface of the connecting head includes a first sub-wall and a second sub-wall connected to the first sub-wall, the first sub-groove wall abuts against the first sub-wall, and the second sub-groove wall abuts against the second sub-wall.

7. The unwinding mechanism according to any one of claims 2 to 5, characterized in that: The mounting groove includes a first sub-groove and a second sub-groove that are connected to each other, the first sub-groove is arranged near the opening of the mounting groove, the first sub-groove is a constant diameter groove, the second sub-groove is a tapered groove, and the inner diameter of the second sub-groove gradually decreases from the first sub-groove toward the central axis of the reel, the outer wall surface of the connecting head includes a first sub-wall and a second sub-wall connected to the first sub-wall, the groove wall of the first sub-groove abuts against the first sub-wall, and the groove wall of the second sub-groove abuts against the second sub-wall.

8. The unwinding mechanism according to any one of claims 2 to 5, characterized in that: The reel includes a winding portion and two connecting portions respectively located on both sides of the winding portion, the winding portion is provided with the channel, each connecting portion is provided with the mounting groove, the adapter also includes a locking member, the bottom surface of the mounting hole is provided with a connecting hole, the winding portion is provided with a mounting surface abutting the bottom surface, the connecting rod extends out of the connecting hole from the mounting surface, and the locking member is installed on the portion of the connecting rod extending out of the connecting hole to lock the connecting head to the connecting portion.

9. The unwinding mechanism according to claim 8, characterized in that: The locking member includes a locking nut. The portion of the connecting rod extending out of the connecting hole is provided with a thread, and the locking nut is threadedly connected to the connecting rod through the thread.

10. The unwinding mechanism according to claim 8, characterized in that: The two connecting heads are both detachably connected to the connecting rod.

11. A coating device, characterized in that: The coating device is applied with the unwinding mechanism according to any one of claims 1 to 10.

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