Pin clamping mechanism, battery cell blanking and clamping assembly and winding equipment

Abstract

This application relates to the field of battery cell processing equipment technology, and particularly to a clamping mechanism, a battery cell blanking clamping assembly, and a winding device. A clamping mechanism includes: a clamping pin seat; and a clamping pin, the clamping pin being rotatably disposed on the clamping pin seat. The clamping mechanism provided by this application can prevent wrinkles from forming on the inner ring of the battery cell during the process of drawing a cylindrical battery cell into a flat battery cell, thereby improving the quality of the battery cell.

Description

Technical Field

[0001] This application relates to the field of battery cell processing equipment technology, and in particular to a needle clamping mechanism, a battery cell feeding clamping assembly, and a winding device. Background Technology

[0002] A winding machine is a device used to process and manufacture battery cells. Specifically, a winding machine typically includes winding needles and a cell unloading clamping assembly. During the cell manufacturing process, the winding needles are first rotated to form a cylindrical cell. Then, the cell unloading clamping assembly clamps the cylindrical cell and unloads it from the winding needles. Finally, the cell unloading clamping assembly pulls the cylindrical cell into a flattened shape, preparing it for subsequent processing. However, during the process of pulling the cylindrical cell into a flattened shape using the cell unloading clamping assembly, wrinkles can easily form on the inner ring of the cell, resulting in poor cell quality. Utility Model Content

[0003] This application discloses a needle clamping mechanism, a battery cell feeding clamping assembly, and a winding device, which can prevent wrinkles from appearing on the inner ring of the battery cell, thereby improving the quality of the battery cell.

[0004] To achieve the above objectives, firstly, this application discloses a needle clamping mechanism, comprising:

[0005] Pin holder; and,

[0006] A clamping needle is rotatably disposed on the clamping needle seat.

[0007] Because the clamping pin is rotatably mounted on the clamping pin seat around the rotation axis, when this clamping pin mechanism is applied to the battery cell unloading clamping assembly, and during the process of flattening the battery cell by the battery cell unloading clamping assembly, the peripheral wall of the clamping pin abuts against the inner ring of the battery cell. If the battery cell structure is asymmetrical, the clamping pin can rotate relative to the clamping pin seat around the rotation axis, and the inner ring of the battery cell can slide along the circumference of the battery cell. In simple terms, although the peripheral wall of the clamping pin abuts against the inner ring of the battery cell, the clamping pin does not completely fix the inner ring of the battery cell. Instead, it allows the inner ring of the battery cell to slide along the circumference of the battery cell to make adaptive adjustments, thereby avoiding wrinkles on the inner ring of the battery cell and thus improving the quality of the battery cell.

[0008] Optionally, the clamping needle has a first end and a second end opposite to each other, the first end being rotatably disposed on the clamping needle seat, and / or the second end being rotatably disposed on the clamping needle seat.

[0009] Since the first end is rotatably disposed in the needle holder, and / or the second end is rotatably disposed in the needle holder, that is, the end of the needle is rotatably disposed in the needle holder, the end of the needle can be used to rotatably install the needle in the needle holder, and a large amount of the peripheral wall of the needle can be left open to abut against the inner ring of the battery cell, thereby making the utilization rate of the peripheral wall of the needle higher.

[0010] In addition, when the first end is rotatably set in the needle holder and the second end is also rotatably set in the needle holder, both ends of the needle can be rotatably mounted in the needle holder. On the one hand, this makes the needle more stably and firmly mounted in the needle holder. On the other hand, it also makes the needle rotate more smoothly relative to the needle holder around the axis of rotation.

[0011] Optionally, the clamping pin has a first end and a second end opposite to each other, and the clamping pin seat is provided with a mounting groove, the mounting groove including a first groove wall and a second groove wall opposite to each other, the clamping pin is accommodated in the mounting groove, the first end is rotatably disposed on the first groove wall, and the second end is rotatably disposed on the second groove wall.

[0012] Since the clamping pin is housed in the mounting slot, it can be partially enclosed by the mounting slot. This design reduces interference from the external environment when the clamping pin rotates, making the environment in which the clamping pin is located safer. On the other hand, it also makes the clamping pin more securely installed.

[0013] Optionally, a first bearing is provided on the first groove wall, and a second bearing is provided on the second groove wall, with the first end mounted on the first bearing and the second end mounted on the second bearing.

[0014] By mounting the first end on the first bearing and the second end on the second bearing, the clamping needle can rotate more smoothly around the axis of rotation under the support of the first and second bearings.

[0015] In addition, since the bearing structure is simple and the technology is mature, when the first end is installed on the first bearing and the second end is installed on the second bearing, the needle clamp can be rotatably set on the needle clamp seat around the rotation axis, which can reduce the cost of the needle clamping mechanism while ensuring reliable needle clamping rotation.

[0016] Optionally, the needle clamping mechanism further includes a stop assembly, the stop assembly comprising:

[0017] A first driving member, disposed on the needle holder; and

[0018] A first abutting member is connected to a first driving member, which drives the first abutting member to move toward or away from the clamping needle to abut or disengage from the clamping needle.

[0019] Since the first abutment is connected to the first driving member, when it is necessary to prevent the clamping needle from rotating, the first driving member can drive the first abutment to move towards the clamping needle, so that the first abutment abuts against the clamping needle. This will generate friction between the first abutment and the clamping needle, and under the action of friction, the clamping needle cannot rotate, thereby achieving the purpose of preventing the clamping needle from rotating.

[0020] When it is necessary to allow the clamping needle to rotate, the first driving member can drive the first abutting member to move away from the clamping needle, so that the first abutting member disengages from the clamping needle. This will eliminate the friction between the first abutting member and the clamping needle, thereby achieving the purpose of allowing the clamping needle to rotate.

[0021] Since the first abutment can be driven by the first driving member to abut or disengage from the clamping needle when it is necessary to restrict or allow the clamping needle to rotate, the principle is very simple, thus reducing the cost of the stop assembly.

[0022] Optionally, the clamping pin has a first end and a second end opposite to each other, and the first driving member is used to drive the first abutting member to move toward or away from the end face of the first end to abut or disengage from the end face of the first end, so as to restrict or allow the clamping pin to rotate.

[0023] Since the first abutment is located on the side of the first end away from the second end along the extension direction of the rotation axis, the first driving member is used to drive the first abutment to move towards or away from the end face of the first end along the extension direction of the rotation axis. Therefore, when the first driving member drives the first abutment to move towards the end face of the first end along the extension direction of the rotation axis, the first abutment can abut against the end face of the first end, thereby achieving the purpose of preventing the needle clamp from rotating.

[0024] Since the first abutting member can prevent the clamping pin from rotating by abutting against the end face of the first end, the peripheral wall of the clamping pin can be left open for contact with the battery cell, thereby reducing the possibility of interference between the first abutting member and the contact between the peripheral wall of the clamping pin and the battery cell.

[0025] Optionally, the first abutment is spaced and sleeved on the peripheral wall of the clamping needle, and the first driving member is used to drive the first abutment to move along the radial direction of the clamping needle toward or away from the peripheral wall of the clamping needle to abut or disengage from the peripheral wall, so as to restrict or allow the clamping needle to rotate.

[0026] Since the first abutment is spaced and sleeved on the peripheral wall of the clamping needle, the first driving member is used to drive the first abutment to move along the radial direction of the clamping needle toward or away from the peripheral wall of the clamping needle. Therefore, when the first driving member drives the first abutment to move along the radial direction of the clamping needle toward the peripheral wall of the clamping needle, the first abutment can abut against the peripheral wall of the clamping needle, thereby achieving the purpose of preventing the clamping needle from rotating.

[0027] When the first abutment abuts against the peripheral wall of the clamping needle to prevent the clamping needle from rotating, the peripheral wall is curved, which increases the friction between the first abutment and the clamping needle to a certain extent, thereby achieving a better effect in preventing the clamping needle from rotating.

[0028] Optionally, a friction element is provided on the side of the first abutment facing the clamping pin.

[0029] By providing a friction element on the side of the first abutment facing the clamping needle, the friction between the first abutment and the clamping needle can be enhanced, thereby better preventing the clamping needle from rotating. Furthermore, direct contact between the first abutment and the clamping needle can be avoided, thus preventing or reducing the possibility of the first abutment or the clamping needle being scratched.

[0030] Optionally, the clamping pin includes an arc surface.

[0031] Because the curved surface is relatively smooth, it can prevent scratches on the battery cells.

[0032] Optionally, the cross-section of the clamping needle is a cylinder or an elliptical cylinder, and the peripheral wall of the cylinder or the peripheral wall of the elliptical cylinder forms the arc surface.

[0033] When the cross-section of the clamping pin is cylindrical, the clamping pin can be made into a cylindrical structure. Since the surface of the cylindrical structure is relatively rounded, on the one hand, it can avoid or reduce the situation where the peripheral wall of the clamping pin presses against the inner ring of the battery cell and damages the inner ring of the battery cell. On the other hand, it can also reduce the friction between the peripheral wall of the clamping pin and the inner ring of the battery cell, making the inner ring of the battery cell slide more smoothly along the circumference of the battery cell.

[0034] Secondly, this application discloses a battery cell feeding clamping assembly, including the clamping needle mechanism described in any of the first aspects above.

[0035] Because the clamping pins of the clamping pin mechanism are rotatably mounted on the clamping pin seat around the rotation axis, when the battery cell unloading clamping assembly includes the clamping pin mechanism, during the process of flattening the battery cell by the battery cell unloading clamping assembly, the clamping pins can rotate relative to the clamping pin seat around the rotation axis, and the inner ring of the battery cell can slide along the circumference of the battery cell. In layman's terms, although the peripheral wall of the clamping pin abuts against the inner ring of the battery cell, the clamping pin does not completely fix the inner ring of the battery cell, but allows the inner ring of the battery cell to slide along the circumference of the battery cell to adapt and adjust, thereby avoiding wrinkles on the inner ring of the battery cell, and thus improving the quality of the battery cell.

[0036] Optionally, it also includes:

[0037] The second drive unit; and,

[0038] A first clamping mechanism, wherein the clamping needle of the clamping mechanism is opposite to the first clamping mechanism, and a second driving member is connected to the first clamping mechanism and / or the clamping needle seat.

[0039] Since the second driving member is connected to the first clamping mechanism and / or the clamping pin holder, it can drive the first clamping mechanism and the clamping pin to move closer or further apart in a direction perpendicular to the rotation axis. When the second driving member drives the first clamping mechanism and the clamping pin to move closer, the clamping pin mechanism and the first clamping mechanism can clamp the battery cell in the inner and outer rings, thereby achieving the purpose of clamping the battery cell. When the second driving member drives the first clamping mechanism and the clamping pin to move further apart, the battery cell can be released.

[0040] Optionally, the clamping pin and the first clamping mechanism are used to clamp the battery cell, and the length of the clamping pin is greater than or equal to the length of the battery cell.

[0041] Since the length of the clamping pin along the axis of rotation is greater than or equal to the length of the battery cell, the battery cell can be completely covered by the clamping pin along the extension direction of the clamping pin. Since the clamping pin is rotatable, it can avoid the non-rotatable part of the clamping pin mechanism from contacting the battery cell, thereby better preventing wrinkling of the inner ring of the battery cell.

[0042] Thirdly, this application discloses a winding device, including the cell feeding clamping assembly described in any of the second aspects above.

[0043] Because the cell feeding clamping assembly can prevent wrinkles from forming on the inner ring of the cell when it is flattened, the presence of this assembly in the winding equipment results in higher quality cells.

[0044] Compared with the prior art, the beneficial effects of this application are as follows:

[0045] In this application, since the clamping pin can be rotatably mounted on the clamping pin seat around the rotation axis, when the clamping pin mechanism is applied to the battery cell unloading clamping assembly, and during the process of flattening the battery cell by the battery cell unloading clamping assembly, the peripheral wall of the clamping pin abuts against the inner ring of the battery cell. If the battery cell structure is asymmetrical, the clamping pin can rotate relative to the clamping pin seat around the rotation axis, and the inner ring of the battery cell can slide along the circumference of the battery cell. In layman's terms, although the peripheral wall of the clamping pin abuts against the inner ring of the battery cell, the clamping pin does not completely fix the inner ring of the battery cell, but allows the inner ring of the battery cell to slide along the circumference of the battery cell to adapt and adjust, thereby avoiding wrinkles on the inner ring of the battery cell, and thus improving the quality of the battery cell. Attached Figure Description

[0046] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0047] Figure 1 This is a schematic diagram of a winding device provided in one embodiment of this application;

[0048] Figure 2 yes Figure 1 A schematic diagram of the battery cell unloading and clamping assembly after the battery cell is unloaded from the winding needle;

[0049] Figure 3A yes Figure 2 A schematic diagram of the structure after the battery cell feeding and clamping assembly in the middle pulls the cylindrical battery cell into a flat battery cell;

[0050] Figure 3B This is a schematic diagram of the structure when the battery cell has an asymmetrical structure;

[0051] Figure 4 This is a schematic diagram of a needle clamping mechanism provided in one embodiment of this application;

[0052] Figure 5 yes Figure 4 Cross-sectional view at position AA in the middle;

[0053] Figure 6 yes Figure 4 A schematic diagram of the needle clamping mechanism from another perspective;

[0054] Figure 7 This is a schematic diagram of another needle clamping mechanism provided in one embodiment of this application;

[0055] Figure 8 yes Figure 7A schematic diagram of the C position of the clamping needle mechanism from a negative Y-axis perspective;

[0056] Figure 9 This is a schematic diagram of the structure of a battery cell feeding clamping assembly provided in one embodiment of this application.

[0057] Explanation of main figure symbols

[0058] 1-Pin holder; 11-Mounting groove; 111-First groove wall; 1111-First bearing; 112-Second groove wall; 1121-Second bearing;

[0059] 2-Clamping needle; 21-First end; 211-End face; 22-Second end; 23-Peripheral wall;

[0060] 3-Stop assembly; 31-First driving component; 32-First abutting component; 321-Friction component;

[0061] 100-Pin clamping mechanism;

[0062] 200-Cell feeding clamping assembly; 201-First mounting base; 202-Second driving component; 203-First clamping mechanism; 204-Second mounting base; 205-Third driving component; 206-Fourth driving component; 207-Second clamping mechanism; 208-Third clamping mechanism;

[0063] 300 - Winding equipment; 301 - Winding needle;

[0064] D - Battery cell; O - Rotation axis. Detailed Implementation

[0065] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0066] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0067] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0068] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0069] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0070] Before explaining the technical solution of the application, the background technology of this application shall be explained first.

[0071] Figure 1 This is a schematic diagram of a winding device 300 provided in one embodiment of this application. Figure 2 yes Figure 1 A schematic diagram of the structure of the battery cell unloading clamping assembly 200 after the battery cell D is unloaded from the winding needle 301. Figure 3A yes Figure 2 The schematic diagram shows the structure of the battery cell feeding clamping assembly 200 after it pulls the cylindrical battery cell D into a flat battery cell D. Figure 3B This is a schematic diagram of the structure of cell D when the structure is asymmetrical.

[0072] See Figure 1 The winding equipment 300 is a device for processing and manufacturing battery cells D. Specifically, the winding equipment 300 typically includes a winding needle 301 and a battery cell unloading clamping assembly 200. In processing and manufacturing the battery cell D, firstly, the winding needle 301 can be rotated to process a cylindrical battery cell D. Then, see... Figure 2 The cell feeding clamping assembly 200 can clamp the cylindrical cell D and unload the cylindrical cell D from the winding needle 301. Finally, see Figure 2 and Figure 3AThe cylindrical battery cell D can be drawn into a flat battery cell D by the battery cell blanking clamping assembly 200, preparing it for subsequent processing. However, during the process of drawing the cylindrical battery cell D into a flat battery cell D by the battery cell blanking clamping assembly 200, the clamping pin mechanism 100 and the first clamping mechanism 203 of the battery cell blanking clamping assembly 200 tightly clamp the battery cell D in the inner and outer rings. This causes the inner ring of the battery cell D to be tightly fixed by the clamping pin mechanism 100, resulting in the following issues during the process of drawing the battery cell D: (See below) Figure 3B If the structure of the flattened cell D is asymmetrical ( Figure 3B In the intermediate state, the inner ring of cell D cannot slide along the circumference of cell D to adapt and adjust, which easily leads to wrinkles on the inner ring of cell D, resulting in poor quality of cell D. Based on this, this application provides a new pin clamping mechanism 100 to solve the above problems.

[0073] The technical solution of this application will be described below with reference to specific embodiments and accompanying drawings.

[0074] Figure 4 This is a schematic diagram of the structure of a needle clamping mechanism 100 provided in an embodiment of this application. See also... Figure 4 The needle clamping mechanism 100 includes a needle clamping seat 1 and a needle clamping 2, wherein the needle clamping 2 has a rotation axis O and is rotatably disposed on the needle clamping seat 1 about the rotation axis O.

[0075] Combination Figure 3A and Figure 4 Since the clamping pin 2 is rotatably mounted on the clamping pin seat 1 around the rotation axis O, when the clamping pin mechanism 100 is applied to the battery cell unloading clamping assembly 200, and during the process of the battery cell unloading clamping assembly 200 flattening the battery cell D, the peripheral wall 23 of the clamping pin 2 abuts against the inner ring of the battery cell D. If the structure of the battery cell D is asymmetrical, the clamping pin 2 can rotate relative to the clamping pin seat 1 around the rotation axis O, and the inner ring of the battery cell D can slide along the circumference of the battery cell D. In simple terms, although the peripheral wall 23 of the clamping pin 2 abuts against the inner ring of the battery cell D, the clamping pin 2 does not completely fix the inner ring of the battery cell D. Instead, it allows the inner ring of the battery cell D to slide along the circumference of the battery cell D to make adaptive adjustments, thereby avoiding wrinkles on the inner ring of the battery cell D and thus improving the quality of the battery cell D.

[0076] It should be noted that, during the process of flattening the battery cell D by the battery cell feeding clamping assembly 200, the peripheral wall 23 of the clamping pin 2 of the clamping pin mechanism 100 abutting against the inner ring of the battery cell D is only one possible application scenario given in this embodiment. In other possible application scenarios, the peripheral wall 23 of the clamping pin 2 can also abut against the outer ring of the battery cell D. When the peripheral wall of the clamping pin 2 abuts against the outer ring of the battery cell D, wrinkles on the outer ring can be avoided during the process of flattening the battery cell D, thereby improving the quality of the battery cell D.

[0077] In some embodiments, considering that the peripheral wall 23 of the clamping pin 2 needs to abut against the inner or outer ring of the battery cell D, in order to prevent the clamping pin 2 from scratching the battery cell D, the clamping pin 2 includes an arc surface, which can abut against the battery cell D. Since the arc surface is relatively smooth, scratching the battery cell D can be avoided.

[0078] The aforementioned clamping pin 2 can be an elliptical cylinder or other possible shapes. The requirement is that, when the peripheral wall 23 of the clamping pin 2 abuts against the inner ring of the battery cell D, the inner ring of the battery cell D can be allowed to slide circumferentially along the battery cell D, preventing wrinkles from forming on the inner ring of the battery cell D. This embodiment does not limit this. In one possible implementation, see... Figure 4 The clamp 2 is a cylinder, and the peripheral wall of the cylinder forms the aforementioned arc surface.

[0079] When the clamping pin 2 is a cylinder, it can be made into a cylindrical structure. Since the surface of the cylindrical structure is relatively rounded, on the one hand, it can avoid or reduce the situation where the peripheral wall 23 of the clamping pin 2 presses against the inner ring of the battery cell D and damages the inner ring of the battery cell D. On the other hand, it can also reduce the friction between the peripheral wall 23 of the clamping pin 2 and the inner ring of the battery cell D, making the inner ring of the battery cell D slide more smoothly along the circumference of the battery cell D.

[0080] It should be noted that, taking the clamp needle 2 as a cylinder as an example, it can be understood that the above-mentioned rotation axis O is an axis that coincides with the axis of the cylinder.

[0081] Of course, the clamping needle 2 can also be an elliptical cylinder. When the clamping needle 2 is an elliptical cylinder, the peripheral wall of the elliptical cylinder forms the aforementioned arc surface.

[0082] In some embodiments, see Figure 4 and Figure 5 , Figure 5 yes Figure 4 A cross-sectional view at position AA shows that the clamping needle 2 has a first end 21 and a second end 22 along the extension direction of the rotation axis O. The first end 21 is rotatably disposed on the clamping needle seat 1, and / or the second end 22 is rotatably disposed on the clamping needle seat 1.

[0083] Since the first end 21 is rotatably disposed on the needle holder 1, and / or the second end 22 is rotatably disposed on the needle holder 1, that is, any end or both ends of the needle 2 are rotatably disposed on the needle holder 1, the needle 2 can be rotatably mounted on the needle holder 1 using the ends of the needle 2, and the peripheral wall 23 of the needle 2 can be largely left open to abut against the inner ring of the battery cell D, thereby making the utilization rate of the peripheral wall 23 of the needle 2 higher.

[0084] In addition, when the first end 21 is rotatably disposed on the needle holder 1, and the second end 22 is also rotatably disposed on the needle holder 1, both ends of the needle 2 can be rotatably mounted on the needle holder 1. On the one hand, the needle 2 can be mounted on the needle holder 1 more stably and firmly. On the other hand, the needle 2 can rotate more smoothly relative to the needle holder 1 around the rotation axis O.

[0085] In some embodiments, see Figure 4 and Figure 6 , Figure 6 yes Figure 4 The needle clamping mechanism 100 is shown in a schematic diagram from another perspective. The needle clamping seat 1 is provided with a mounting groove 11. The mounting groove 11 includes a first groove wall 111 and a second groove wall 112 that are opposite each other along the extension direction of the rotation axis O. The needle clamp 2 is accommodated in the mounting groove 11. The first end 21 is rotatably disposed on the first groove wall 111, and the second end 22 is rotatably disposed on the second groove wall 112.

[0086] Since the clamping pin 2 is housed in the mounting groove 11, the clamping pin 2 can be partially enclosed by the mounting groove 11. This arrangement has two advantages: firstly, it reduces interference from the external environment when the clamping pin 2 rotates, making the environment in which the clamping pin 2 is located safer; secondly, it allows the clamping pin 2 to be installed more securely.

[0087] There are multiple ways in which the first end 21 is rotatably disposed on the first groove wall 111, and the second end 22 is rotatably disposed on the second groove wall 112. In one possible implementation, see [link to relevant documentation]. Figure 5 A first bearing 1111 is provided on the first groove wall 111, and a second bearing 1121 is provided on the second groove wall 112. The first end 21 is installed on the first bearing 1111, and the second end 22 is installed on the second bearing 1121.

[0088] By mounting the first end 21 on the first bearing 1111 and the second end 22 on the second bearing 1121, the clamping needle 2 can rotate more smoothly around the rotation axis O under the support of the first bearing 1111 and the second bearing 1121.

[0089] In addition, since the bearing structure is simple and the technology is mature, when the first end 21 is installed on the first bearing 1111 and the second end 22 is installed on the second bearing 1121, the needle clamp 2 is rotatably set on the needle clamp seat 1 around the rotation axis O, so as to ensure the reliable rotation of the needle clamp 2 and reduce the cost of the needle clamp mechanism 100.

[0090] Both the first bearing 1111 and the second bearing 1121 mentioned above can be deep groove ball bearings or other possible bearings, and this embodiment does not limit them.

[0091] Considering that before or after the battery cell D is flattened by the battery cell clamping assembly 200, there is still an action of moving the battery cell D by the battery cell clamping assembly 200, if the clamping pin 2 can rotate around the rotation axis O at this time, then the inner ring of the battery cell D will slide under the action of gravity, which will lead to abnormal deformation of the battery cell D. In order to avoid this situation, in some embodiments, see Figure 4 The needle clamping mechanism 100 also includes a stop component 3, which is disposed on the needle clamping seat 1 and is used to restrict or allow the needle clamping 2 to rotate.

[0092] Since the stop component 3 can restrict or allow the clamping pin 2 to rotate, during the process of flattening the battery cell D through the battery cell unloading clamping component 200, the stop component 3 can allow the clamping pin 2 to rotate, thus preventing wrinkles from forming on the inner ring of the battery cell D. After the battery cell D is flattened, when the battery cell D is transported through the battery cell unloading clamping component 200, the stop component 3 can prevent the clamping pin 2 from rotating, thereby preventing abnormal deformation of the battery cell D under the action of gravity.

[0093] As can be seen, when the needle clamping mechanism 100 also includes a stop component 3, it can decide to restrict or allow the needle clamping 2 to rotate according to different times, making the functions of the needle clamping mechanism 100 more abundant and suitable for more application scenarios.

[0094] There are multiple ways to implement the aforementioned stop component 3. In one possible implementation, see [link to relevant documentation]. Figure 4 The stop assembly 3 includes a first drive member 31 and a first abutting member 32. The first drive member 31 is disposed on the needle holder 1, and the first abutting member 32 is connected to the first drive member 31. The first drive member 31 is used to drive the first abutting member 32 to move toward or away from the needle holder 2 so as to abut or disengage from the needle holder 2.

[0095] Since the first abutment 32 is connected to the first driving member 31, when it is necessary to prevent the clamping needle 2 from rotating, the first driving member 31 can drive the first abutment 32 to move towards the clamping needle 2, so that the first abutment 32 abuts against the clamping needle 2. In this way, friction will be generated between the first abutment 32 and the clamping needle 2, and the clamping needle 2 will not be able to rotate under the action of friction, thereby achieving the purpose of preventing the clamping needle 2 from rotating.

[0096] When it is necessary to allow the clamping needle 2 to rotate, the first driving member 31 can drive the first abutting member 32 to move away from the clamping needle 2, so that the first abutting member 32 disengages from the clamping needle 2. In this way, the friction between the first abutting member 32 and the clamping needle 2 will disappear, thereby achieving the purpose of allowing the clamping needle 2 to rotate.

[0097] Since the first drive member 31 drives the first abutment member 32 to abut or disengage from the clamping needle 2 when it is necessary to restrict or allow the clamping needle 2 to rotate, the principle of implementation is very simple. Therefore, the cost of the stop assembly 3 can be reduced.

[0098] Of course, the aforementioned stop component 3 can also be implemented in other possible ways. For example, in another possible implementation, the stop component 3 can include an electromagnet and a magnet. The magnet is disposed on the clamping pin 2, and the electromagnet is disposed on the clamping pin seat 1 and spaced apart from the magnet. In this way, when it is necessary to prevent the clamping pin 2 from rotating, the electromagnet can be energized, and a magnetic force will be generated between the electromagnet and the magnet, thereby preventing the clamping pin 2 from rotating. When it is necessary to allow the clamping pin 2 to rotate, the electromagnet can be de-energized, and the magnetic force between the electromagnet and the magnet will disappear, thereby allowing the clamping pin 2 to rotate.

[0099] In some embodiments, see Figure 4 The clamping pin 2 has a first end 21 and a second end 22 opposite to each other along the extension direction of the rotation axis O, and the first abutting member 32 is located on the side of the first end 21 away from the second end 22 along the extension direction of the rotation axis O. Figure 4 (Right side of the first end 21), the first driving member 31 is used to drive the first abutting member 32 to move along the extension direction of the rotation axis O toward the end face 211 of the first end 21 to abut or disengage from the end face 211 of the first end 21, so as to restrict or allow the clamping needle 2 to rotate.

[0100] Since the first abutment 32 is located on the side of the first end 21 away from the second end 22 along the extension direction of the rotation axis O, the first driving member 31 is used to drive the first abutment 32 to move along the extension direction of the rotation axis O toward the end face 211 of the first end 21. Therefore, when the first driving member 31 drives the first abutment 32 to move along the extension direction of the rotation axis O toward the end face 211 of the first end 21, the first abutment 32 can abut against the end face 211 of the first end 21, thereby achieving the purpose of preventing the clamping needle 2 from rotating.

[0101] Since the first abutting member 32 can prevent the clamping pin 2 from rotating by abutting the end face 211 of the first end 21, the peripheral wall 23 of the clamping pin 2 can be left open for abutting with the battery cell D, thereby reducing the possibility of interference between the first abutting member 32 and the peripheral wall 23 of the clamping pin 2 and the battery cell D.

[0102] In this embodiment, when the clamping pin 2 is prevented from rotating by causing the first abutting member 32 to abut against the end face 211 of the first end 21, the first driving member 31 used to drive the first abutting member 32 to move can be understood as a telescopic cylinder or telescopic motor, etc., as long as it can drive the first abutting member 32 to move along the extension direction of the rotation axis O toward or away from the end face 211 of the first end 21. This embodiment does not limit this. The first abutting member 32 can be understood as an abutting block, etc., and this embodiment does not limit the first abutting member 32.

[0103] It should be noted that the first end 21 mentioned above can be either of the two ends of the clamping needle 2.

[0104] Of course, preventing the clamping pin 2 from rotating by having the first abutting member 32 abut against the end face 211 of the first end 21 is only one possible implementation method given in this embodiment. In another possible implementation method, see [link to relevant documentation]. Figure 7 and Figure 8 , Figure 7 This is a schematic diagram of another needle clamping mechanism 100 provided in one embodiment of this application. Figure 8 yes Figure 7 A schematic diagram of the structure of the clamping needle mechanism 100 at position C along the negative Y-axis. The first abutting member 32 is spaced and sleeved on the peripheral wall 23 of the clamping needle 2. The first driving member 31 is used to drive the first abutting member 32 to move along the radial direction of the clamping needle 2 toward or away from the peripheral wall 23 of the clamping needle 2 to abut or disengage from the peripheral wall 23, so as to restrict or allow the clamping needle 2 to rotate.

[0105] Since the first abutting member 32 is spaced and sleeved on the peripheral wall 23 of the clamping needle 2, the first driving member 31 is used to drive the first abutting member 32 to move along the radial direction of the clamping needle 2 toward or away from the peripheral wall 23 of the clamping needle 2. Therefore, when the first driving member 31 drives the first abutting member 32 to move along the radial direction of the clamping needle 2 toward the peripheral wall 23 of the clamping needle 2, the first abutting member 32 can abut against the peripheral wall 23 of the clamping needle 2, thereby achieving the purpose of preventing the clamping needle 2 from rotating.

[0106] When the first abutting member 32 abuts against the peripheral wall 23 of the clamping needle 2 to prevent the clamping needle 2 from rotating, since the peripheral wall 23 is a curved surface, the friction between the first abutting member 32 and the clamping needle 2 can be increased to a certain extent, thereby achieving a better purpose of preventing the clamping needle 2 from rotating.

[0107] Specifically, when the first abutment 32 abuts against the peripheral wall 23 of the clamping pin 2 to prevent the clamping pin 2 from rotating, see [reference needed]. Figure 7 and Figure 8 The first driving member 31 can be a clamping cylinder, and the first abutting member 32 can be two grippers. In this way, when the first driving member 31 drives the first abutting member 32 to move along the radial direction of the clamping needle 2 toward the peripheral wall 23 of the clamping needle 2, the first abutting member 32 can tightly hold the clamping needle 2, thereby better preventing the clamping needle 2 from rotating.

[0108] When the clamping pin 2 is prevented from rotating by abutting against the peripheral wall 23, in order to avoid the first abutting member 32 occupying too much space on the peripheral wall 23 and affecting the contact between the peripheral wall 23 of the clamping pin 2 and the inner ring of the battery cell D, see [reference needed]. Figure 7 The contact point between the first abutting member 32 and the peripheral wall 23 can be close to the first end 21 of the clamping pin 2. In this way, the possibility of interference caused by the first abutting member 32 to the contact between the peripheral wall 23 of the clamping pin 2 and the battery cell D can be reduced as much as possible.

[0109] Furthermore, when the first abutting member 32 abuts against the clamping pin 2, in order to enhance the friction between the first abutting member 32 and the clamping pin 2, thereby better preventing the clamping pin 2 from rotating, in some embodiments, see [reference needed]. Figure 4 A friction element 321 is provided on the side of the first abutting member 32 facing the clamping pin 2.

[0110] By providing a friction element 321 on the side of the first abutment 32 facing the clamping needle 2, the friction between the first abutment 32 and the clamping needle 2 can be enhanced, thereby better preventing the clamping needle 2 from rotating. On the other hand, direct contact between the first abutment 32 and the clamping needle 2 can be avoided, thereby preventing or reducing the possibility of the first abutment 32 or the clamping needle 2 being scratched.

[0111] The friction element 321 can be a rubber part or any other component that can enhance the friction between the first abutting part 32 and the clamping pin 2. This embodiment does not limit the friction element 321.

[0112] Figure 9 This is a schematic diagram of the structure of a battery cell feeding clamping assembly 200 provided in an embodiment of this application. See also... Figure 9 The battery cell feeding clamping assembly 200 includes a needle clamping mechanism 100.

[0113] The structure of the needle clamping mechanism 100 can be the same as that of any of the needle clamping mechanisms 100 described in the above embodiments, and can bring the same or similar beneficial effects. For details, please refer to the description of the needle clamping mechanism 100 in the above embodiments. This embodiment will not repeat the description here.

[0114] In this embodiment, since the clamping pin 2 of the clamping pin mechanism 100 is rotatably disposed on the clamping pin seat 1 around the rotation axis O, when the battery cell unloading clamping assembly 200 includes the clamping pin mechanism 100, during the process of flattening the battery cell D by the battery cell unloading clamping assembly 200, the clamping pin 2 can rotate relative to the clamping pin seat 1 around the rotation axis O, and the inner ring of the battery cell D can slide along the circumference of the battery cell D. In layman's terms, although the peripheral wall 23 of the clamping pin 2 abuts against the inner ring of the battery cell D, the clamping pin 2 does not completely fix the inner ring of the battery cell D, but allows the inner ring of the battery cell D to slide along the circumference of the battery cell D to adapt and adjust, thereby avoiding the occurrence of wrinkles in the inner ring of the battery cell D, and thus making the quality of the battery cell D better.

[0115] In some embodiments, see Figure 4 and Figure 9 The cell feeding and clamping assembly 200 also includes a first mounting base 201, a second driving member 202, and a first clamping mechanism 203, wherein the second driving member 202 is disposed on the first mounting base 201. The needle clamping mechanism 100's needle clamping seat 1 and the first clamping mechanism 203 are both disposed on the first mounting base 201, and the needle clamping mechanism 100's needle clamping 2 is opposite to the first clamping mechanism 203 in a direction perpendicular to the rotation axis O. The second driving member 202 is connected to the first clamping mechanism 203 and / or the needle clamping seat 1.

[0116] Since the second driving member 202 is connected to the first clamping mechanism 203 and / or the clamping pin seat 1, the second driving member 202 can drive the first clamping mechanism 203 and the clamping pin 2 to move closer or further apart in a direction perpendicular to the rotation axis O. When the second driving member 202 drives the first clamping mechanism 203 and the clamping pin 2 to move closer together, the clamping pin mechanism 100 and the first clamping mechanism 203 can clamp the battery cell D in the inner and outer rings, thereby achieving the purpose of clamping the battery cell D. When the second driving member 202 drives the first clamping mechanism 203 and the clamping pin 2 to move further apart, the purpose of releasing the battery cell D can be achieved.

[0117] Furthermore, in some embodiments, see Figure 9 The cell feeding clamping assembly 200 also includes a second mounting base 204, a third driving member 205, a fourth driving member 206, a second clamping mechanism 207, and a third clamping mechanism 208. The third driving member 205 is connected to the second clamping mechanism 207 and / or the third clamping mechanism 208 respectively, and the fourth driving member 206 is connected to the first mounting base 201 and / or the second mounting base 204 respectively. In this way, when the third driving member 205 drives the second clamping mechanism 207 and the third clamping mechanism 208 to move closer or further away from each other, the purpose of clamping or releasing the cell D can be achieved. When the fourth driving member 206 drives the first mounting base 201 and the second mounting base 204 to move further away from each other, the purpose of flattening the cell D can be achieved.

[0118] In some embodiments, the clamping pin 2 and the first clamping mechanism 203 are used to clamp the battery cell D, and the length of the clamping pin 2 along the extension direction of the rotation axis O is greater than or equal to the length of the battery cell D.

[0119] Since the length of the clamping pin 2 along the rotation axis O is greater than or equal to the length of the battery cell D, the battery cell D can be completely covered by the clamping pin 2 along the extension direction of the clamping pin 2. Since the clamping pin 2 is rotatable, it can avoid the situation where the non-rotatable part of the clamping pin mechanism 100 comes into contact with the battery cell D, thereby better preventing the occurrence of wrinkles on the inner ring of the battery cell D.

[0120] An embodiment of this application also provides a winding apparatus 300, see [link to previous document]. Figure 1 The winding equipment 300 includes a cell feeding and clamping assembly 200.

[0121] The structure of the cell feeding clamping assembly 200 can be the same as that of the cell feeding clamping assembly 200 described in any of the above embodiments, and can bring the same or similar beneficial effects. For details, please refer to the description of the cell feeding clamping assembly 200 in the above embodiments. This embodiment will not repeat the description here.

[0122] In this embodiment, the cell feeding clamping assembly 200 can prevent wrinkles from forming on the inner ring of the cell D when flattening the cell D. Therefore, when the winding equipment 300 includes the cell feeding clamping assembly 200, the quality of the cell D processed by the winding equipment 300 can be improved.

[0123] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A needle clamping mechanism (100), characterized in that, include: Pin holder (1); as well as, A clamping needle (2) is rotatably disposed on the clamping needle seat (1).

2. The needle clamping mechanism (100) according to claim 1, characterized in that, The clamping needle (2) has a first end (21) and a second end (22) opposite to each other, the first end (21) being rotatably disposed on the clamping needle seat (1), and / or the second end (22) being rotatably disposed on the clamping needle seat (1).

3. The needle clamping mechanism (100) according to claim 1, characterized in that, The clamping pin (2) has a first end (21) and a second end (22) opposite to each other. The clamping pin seat (1) is provided with a mounting groove (11). The mounting groove (11) includes a first groove wall (111) and a second groove wall (112) opposite to each other. The clamping pin (2) is accommodated in the mounting groove (11). The first end (21) is rotatably disposed on the first groove wall (111), and the second end (22) is rotatably disposed on the second groove wall (112).

4. The needle clamping mechanism (100) according to claim 3, characterized in that, A first bearing (1111) is provided on the first groove wall (111), and a second bearing (1121) is provided on the second groove wall (112). The first end (21) is installed on the first bearing (1111), and the second end (22) is installed on the second bearing (1121).

5. The needle clamping mechanism (100) according to any one of claims 1-4, characterized in that, The needle clamping mechanism (100) further includes a stop assembly (3), the stop assembly (3) comprising: A first driving member (31) is disposed on the needle holder (1); and, The first abutment (32) is connected to the first drive member (31).

6. The needle clamping mechanism (100) according to claim 5, characterized in that, The clamping pin (2) has a first end (21) and a second end (22) opposite to each other. The first driving member (31) is used to drive the first abutting member (32) to move toward the end face (211) of the first end (21) to abut or disengage from the end face (211) of the first end (21) in order to restrict or allow the clamping pin (2) to rotate.

7. The needle clamping mechanism (100) according to claim 5, characterized in that, The first abutting member (32) is spaced and sleeved on the peripheral wall (23) of the clamping needle (2). The first driving member (31) is used to drive the first abutting member (32) to move along the radial direction of the clamping needle (2) toward the peripheral wall (23) of the clamping needle (2) to abut or disengage from the peripheral wall (23) to restrict or allow the clamping needle (2) to rotate.

8. The needle clamping mechanism (100) according to claim 5, characterized in that, The first abutting member (32) has a friction member (321) on the side facing the clamping pin (2).

9. The needle clamping mechanism (100) according to any one of claims 1-4 or 6-8, characterized in that, The clamping pin (2) includes an arc surface.

10. The needle clamping mechanism (100) according to claim 9, characterized in that, The clamping pin (2) is a cylinder or an elliptical cylinder, and the peripheral wall of the cylinder or the peripheral wall of the elliptical cylinder forms the arc surface.

11. A battery cell unloading clamping assembly (200), characterized in that, Includes the needle clamping mechanism (100) according to any one of claims 1-10.

12. The cell feeding clamping assembly (200) according to claim 11, characterized in that, Also includes: The second drive unit (202); and, A first clamping mechanism (203) is provided, wherein the clamping needle (2) of the clamping needle mechanism (100) is opposite to the first clamping mechanism (203), and the second driving member (202) is connected to the first clamping mechanism (203) and / or the clamping needle seat (1).

13. The cell feeding clamping assembly (200) according to claim 12, characterized in that, The clamping pin (2) and the first clamping mechanism (203) are used to clamp the battery cell (D), and the length of the clamping pin (2) is greater than or equal to the length of the battery cell (D).

14. A winding device (300), characterized in that, Includes the cell feeding clamping assembly (200) according to any one of claims 11-13.

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