Diaphragm ending device and battery cell processing equipment

Abstract

The invention relates to a diaphragm ending device and battery cell processing equipment. The diaphragm ending device comprises a transferring mechanism, a cutting mechanism and a picking mechanism. And after lamination is completed, the battery cell clamping jaw clamps the battery cell from the lamination table and transfers the battery cell to the tail winding device, so that a section of diaphragm material belt is pulled out between the lamination table and the tail winding device. And then, the cutting mechanism can be driven by the transferring mechanism to be close to the diaphragm material belt between the lamination table and the tail winding device, and the cutting driving piece drives the cutter to cut off the diaphragm material belt. The picking mechanism clamps the broken end, close to the tail rolling device, of the diaphragm material belt through a clamping piece. And when the tail winding device executes the tail winding operation, the picking mechanism and the tail winding device can move oppositely, so that the broken end of the diaphragm material belt is gradually close to the tail winding device. Therefore, the diaphragm ending device does not interfere with the battery cell clamping jaw, so that the structure of the battery cell clamping jaw is not limited by the diaphragm ending device, and the structure of battery cell processing equipment can be simplified.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery equipment, and in particular to a diaphragm finishing device and battery core processing equipment. Background Art

[0002] After the battery cells are stacked on the stacking table, the diaphragm strip needs to be cut and a certain length of diaphragm needs to be reserved to be transferred to the tail winding station with the battery cells for winding, gluing and other operations. At present, the battery cell clamp is generally used to grab and transfer the battery cell, and a diaphragm clamp for clamping the diaphragm is provided between the stacking table and the tail winding mechanism. The battery cell clamp needs to pass through the diaphragm clamp to smoothly realize the battery cell transfer. The length of the diaphragm clamp is relatively long, and the length of the battery cell clamp needs to be adapted to it. This will make the overall structure of the equipment more complicated. Summary of the invention

[0003] Based on this, it is necessary to provide a diaphragm finishing device and battery cell processing equipment that can simplify the structure to address the above problems.

[0004] A diaphragm finishing device includes a transfer mechanism, a cutting mechanism and a picking mechanism. The cutting mechanism and the picking mechanism are both installed on the transfer mechanism, and the picking mechanism is located on one side of the cutting mechanism. The cutting mechanism includes a cutter and a cutting drive component, and the picking mechanism includes a clamping component and a clamping drive component.

[0005] In one embodiment, the picking mechanism is slidably mounted on the transfer mechanism, and the diaphragm finishing device further comprises a tensioning member, which is connected to the transfer mechanism and the picking mechanism.

[0006] In one embodiment, the tensioning member is configured as a spring or a cylinder.

[0007] In one embodiment, the transfer mechanism is provided with a lifting end capable of being raised and lowered, and the cutting mechanism and the picking mechanism are both installed at the lifting end of the transfer mechanism.

[0008] In one of the embodiments, the sliding direction of the picking mechanism is perpendicular to the lifting direction of the lifting end of the transfer mechanism.

[0009] In one embodiment, the transfer mechanism also includes a support plate, a lifting drive member, a mounting plate and a mounting bracket, the mounting plate is transmission-connected to the lifting drive member, the mounting bracket is mounted on the mounting plate, the cutting mechanism and the picking mechanism are both arranged on the mounting bracket, and the diaphragm finishing device also includes a tensioning member, and the tensioning member is connected to the mounting plate and the mounting bracket.

[0010] In one of the embodiments, the mounting bracket is connected to the mounting plate via two guide rail slider assemblies that are spaced apart, and the cutting drive member is located between the two guide rail slider assemblies.

[0011] In one embodiment, the cutting mechanism further includes a cutter mounting plate and a first guide member, the cutter is mounted on the cutter mounting plate, and the cutter mounting plate is mounted on the mounting bracket via the first guide member.

[0012] In one embodiment, the cutting mechanism further comprises a diaphragm pressing plate, and the diaphragm pressing plate is distributed on at least one side of the cutter.

[0013] In one embodiment, the diaphragm pressure plate is capable of extending and retracting relative to the cutter.

[0014] In one embodiment, the cutting mechanism also includes a cutter mounting plate, a second guide member and an elastic member, the cutter is mounted on the cutter mounting plate, the cutting drive member is transmission-connected to the cutter mounting plate, the diaphragm pressure plate is mounted on the cutter mounting plate via the second guide member, and the elastic member is connected to the diaphragm pressure plate.

[0015] In one of the embodiments, the diaphragm pressure plate can move with the cutter toward the diaphragm strip to be cut and abut against the diaphragm strip before the cutter, and while the cutter continues to move toward the diaphragm strip, the diaphragm pressure plate can overcome the force of the elastic member and retreat relative to the cutter until the cutter cuts the diaphragm strip.

[0016] In one embodiment, the cutting mechanism also includes a cutter mounting plate, the cutter includes a connecting plate, a heating wire and a pre-tightening member, the two connecting plates are rotatably mounted on the cutter mounting plate, the two ends of the heating wire are respectively connected to the two connecting plates, and the pre-tightening member is connected to the connecting plate.

[0017] A battery core processing device comprises a stacking table and a diaphragm finishing device as described in any one of the above embodiments, wherein the diaphragm finishing device is arranged on one side of the stacking table.

[0018] In one of the embodiments, the stacking platform can be raised and lowered relative to the diaphragm finishing device in a direction perpendicular to the stacking platform bearing surface.

[0019] In one of the embodiments, a suction plate is provided on the edge of the stacking platform facing the diaphragm finishing device.

[0020] In one embodiment, the cutting mechanism further includes a membrane pressing plate, the suction plate is arranged opposite to the membrane pressing plate, and can clamp the membrane strip between the suction plate and the membrane pressing plate.

[0021] In one embodiment, it also includes a tail winding device and a battery cell clamp, wherein the tail winding device is arranged on the side of the diaphragm tail winding device facing away from the stacking platform, and the picking mechanism can approach or move away from the tail winding device, and the battery cell clamp can clamp the battery cell and move between the stacking platform and the tail winding device.

[0022] In one of the embodiments, a avoidance groove for the power core clamp to extend into is provided on the bearing surface of the stacking table, and the stacking table also includes a finishing mechanism, the finishing mechanism includes a finishing plate and a finishing drive member, the finishing drive member can drive the finishing plate to level the avoidance groove, and can drive the finishing plate to expose the avoidance groove.

[0023] In one of the embodiments, the tail winding device includes a winding needle, and an avoidance gap for the winding needle to pass through is formed on the inner side of the battery cell clamp.

[0024] In the above-mentioned diaphragm finishing device and battery cell processing equipment, after lamination is completed, the battery cell clamping claw clamps the battery cell from the lamination table and transfers it to the tail winding device, thereby pulling out a section of diaphragm material strip between the lamination table and the tail winding device. Then, the cutting mechanism can approach the diaphragm material strip between the lamination table and the tail winding device under the drive of the transfer mechanism, and the cutting drive component drives the cutter to cut the diaphragm material strip. The picking mechanism clamps the broken end of the diaphragm material strip close to the tail winding device by the clamping component. When the tail winding device performs the tail winding operation, the picking mechanism and the tail winding device can move toward each other, so that the broken end of the diaphragm material strip gradually moves closer to the tail winding device. It can be seen that the above-mentioned diaphragm finishing device will not interfere with the battery cell clamping claw, so the structure of the battery cell clamping claw will not be restricted by the diaphragm finishing device, so the structure of the battery cell processing equipment can be simplified. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A simplified schematic diagram of a battery cell processing device according to an embodiment of the present invention;

[0027] Figure 2 for Figure 1 The schematic diagram of the structure of the diaphragm finishing device in the battery cell processing equipment shown;

[0028] Figure 3 for Figure 2 A schematic diagram of the back side of the diaphragm finishing device shown;

[0029] Figure 4 for Figure 2 Right side view of the diaphragm finisher shown. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0035] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0036] See also Figure 1 The present invention provides a cell processing device 10 and a diaphragm finishing device 100. The cell processing device 10 includes a diaphragm finishing device 100, a lamination table 200, a tail winding device (not shown) and a cell clamp 300.

[0037] The membrane tailing device 100 is arranged on one side of the lamination platform 200, and the tail winding device is arranged on the side of the membrane tailing device 100 facing away from the lamination platform 200. Specifically, the lamination platform 200 and the tail winding device are arranged in a first direction, and the membrane tailing device 100 is arranged between the lamination platform 200 and the tail winding device. Figure 1 In the left-right direction shown, the diaphragm finishing device 100 is arranged on the left side of the lamination platform 200, and the tail winding device is arranged on the left side of the diaphragm finishing device 100. The positive electrode sheets and the negative electrode sheets can be alternately stacked on the lamination platform 200, and the adjacent electrode sheets are separated by the diaphragm material strip 20, so that the battery cell 30 is stacked on the lamination platform 200.

[0038] The battery cell clamp 300 can clamp the battery cell 30 on the stacking table 200 and transfer it to the tail winding device. The diaphragm tailing device 100 can cut off the diaphragm tape 20 connected to the battery cell 30 to reserve a certain length of the diaphragm tape 20 at the end of the battery cell 30, and can clamp the end of the diaphragm tape 20 to keep the diaphragm tape 20 taut. The tail winding device uses the reserved diaphragm tape 20 to perform a tail winding operation on the battery cell 30. Specifically, the tail winding device includes a winding needle 410, which can clamp the battery cell 30 and drive the battery cell 30 to rotate, so that the reserved diaphragm tape 20 is wound around the outside of the battery cell 30.

[0039] In this embodiment, a clearance notch 310 is formed on the inner side of the battery cell clamp 300 for the winding needle 310 to pass through. After the battery cell clamp 300 transfers the battery cell 30 to the tail winding device, the winding needle 310 can pass through the clearance notch 310 to clamp the battery cell 30. During this process, the battery cell clamp 300 can still clamp the battery cell 30, so the battery cell 30 can be prevented from becoming loose.

[0040] In addition, in this embodiment, a avoidance groove (not shown) for the power core clamp 300 to extend into is provided on the bearing surface of the stacking table 200, and the stacking table 200 also includes a finishing mechanism (not shown), which includes a finishing plate and a finishing drive member. The finishing drive member can drive the finishing plate to level the avoidance groove and can drive the finishing plate to expose the avoidance groove.

[0041] The avoidance groove is generally in the shape of a long strip, so the filling plate is also in the shape of a long strip. In the case where multiple avoidance grooves are provided, the filling plates need to be provided one by one with the multiple avoidance grooves, and the multiple filling plates can be driven together by a filling drive. During the lamination process of the battery cell 30, the filling drive drives the filling plate to move so that the filling plate enters the corresponding avoidance groove and is in the same plane as the bearing surface of the lamination table 200, thereby filling the avoidance groove. In this way, the bearing surface of the lamination table 200 will form a complete plane, thereby avoiding indentations on the surface of the manufactured battery cell 30.

[0042] When the battery cells 30 are stacked and need to be removed by the battery cell clamps 300, the filling drive member drives the filling plate to expose the avoidance groove. In this way, the battery cell clamps 300 can extend to the bottom of the battery cells 30 through the avoidance groove, so as to reliably clamp the battery cells 30 along the upper and lower sides.

[0043] After the tail winding operation is completed, the battery cell processing equipment 10 generally needs to perform processes such as gluing and pressing on the battery cell 30. The gluing and pressing processes can be performed using the same method and structure as in the prior art, so they will not be described in detail here.

[0044] Please also read Figure 2 , Figure 3 and Figure 4 In one embodiment of the present invention, a membrane finishing device 100 includes a transfer mechanism 110 , a cutting mechanism 120 and a picking mechanism 130 .

[0045] The cutting mechanism 120 and the picking mechanism 130 are both installed on the transfer mechanism 110, and the transfer mechanism 110 can drive the cutting mechanism 120 and the picking mechanism 130 to move. The cutting mechanism 120 includes a cutter 121 and a cutting drive 122, and the cutting drive 122 can drive the cutter 121 to move to cut the diaphragm material strip 20. Specifically, the cutting drive 122 can be a cylinder, and the diaphragm material strip 20 can be quickly cut by driving the cutter 121 to move.

[0046] The picking mechanism 130 includes a clamping member 131 and a clamping driving member 132. The clamping driving member 132 can drive the clamping member 131 to clamp or open. The clamping driving member 132 can also be a cylinder, which can first drive the clamping member 131 to open its opening, and then drive the clamping member 131 to clamp after the diaphragm material strip 20 enters the clamping member 131 through the opening to pick up the diaphragm material strip 20. The clamping member 131 can be a clamping plate, and its opening faces the cutting mechanism 120, so as to facilitate the clamping of the broken end of the diaphragm material strip 20.

[0047] The picking mechanism 130 is located on one side of the cutting mechanism 120. Specifically, the picking mechanism 130 is located on the side of the cutting mechanism 120 facing the stacking platform 200. For example, if the stacking platform 200 is located on the right side of the membrane finishing device 100, the picking mechanism 130 is also located on the right side of the cutting mechanism 120.

[0048] When the stacking is completed on the stacking table 200, the battery cell clamp 300 will clamp the battery cell 30 from the stacking table 200 and transfer it to the tail winding device, thereby pulling out a section of the diaphragm material strip 20 between the stacking table 200 and the tail winding device. Next, the cutting mechanism 120 can approach the diaphragm material strip 20 under the drive of the transfer mechanism 110, and cut the diaphragm material strip 20 between the stacking table 200 and the tail winding device. The picking mechanism 130 picks up the broken end of the cut diaphragm material strip 20 close to the tail winding device. Specifically, after the diaphragm material strip 20 is cut, the picking mechanism 130 generally moves first to align with the broken end of the diaphragm material strip 20 under the drive of the transfer mechanism 110, then approaches the broken end of the diaphragm material strip 20, and finally picks up the broken end.

[0049] When the tail coiling device performs the tail coiling operation, the picking mechanism 130 and the tail coiling device can move toward each other. In this way, the picking mechanism 130 can drive the broken ends of the clamped diaphragm material strip 20 to gradually move closer to the tail coiling device to ensure that the tail coiling operation is carried out smoothly.

[0050] Specifically, in this embodiment, the picking mechanism 130 can be slidably mounted on the transfer mechanism 110. Moreover, the transfer mechanism 110 includes a tensioning member 150, which is connected to the transfer mechanism 110 and the picking mechanism 130. More specifically, the picking mechanism 130 can reciprocate along a first direction relative to the transfer mechanism 110. The tensioning member 150 can be configured as a spring or a cylinder, and can provide a tensioning force along the first direction for the transfer mechanism 110.

[0051] When the tail winding device performs the tail winding operation, the membrane material strip 20 is pulled to drive the picking mechanism 130 to approach the tail winding device along the first direction, so that the clamped membrane material strip 20 gradually moves closer to the tail winding device. Moreover, under the action of the tensioning member 150, the membrane material strip 20 can be kept taut. It can be seen that with the cooperation of the picking mechanism 130, the membrane material strip 20 can be smoothly supplied to the tail winding device, and wrinkles of the membrane material strip 20 can be avoided, thereby ensuring the smooth execution of the tail winding operation.

[0052] It should be noted that in other embodiments, the picking mechanism 130 may also remain fixed in the first direction, and the membrane material strip 20 is gradually moved toward the tail winding device by making the tail winding device reciprocate along the first direction.

[0053] In addition, the transfer mechanism 110 is provided with a lifting end that can be raised and lowered, and the cutting mechanism 120 and the picking mechanism 130 are both installed at the lifting end of the transfer mechanism 110. Specifically, the lifting end of the transfer mechanism 110 can be raised and lowered along the second direction, that is, the cutting mechanism 120 and the picking mechanism 130 can also be raised and lowered along the second direction under the drive of the transfer mechanism 110. The second direction is different from the first direction. Specifically, in this embodiment, the first direction and the second direction are perpendicular to each other. More specifically, the second direction refers to Figure 1 Vertical orientation shown.

[0054] In this embodiment, the transfer mechanism 110 further includes a support plate 111, a lifting drive member 112, a mounting plate 113 and a mounting bracket 114. The mounting plate 113 is in transmission connection with the lifting drive member 112, the mounting bracket 114 is slidably mounted on the mounting plate 113, and the cutting mechanism 120 and the picking mechanism 130 are both disposed on the mounting bracket 114.

[0055] The mounting plate 113 can be directly mounted on the driving end of the lifting drive member 112, and can move along the second direction under the drive of the lifting drive member 112. In this way, the mounting bracket 114 and the cutting mechanism 120 and the picking mechanism 130 thereon can be driven to move along the second direction. When the mounting bracket 114 slides along the first direction, the cutting mechanism 120 and the picking mechanism 130 can be driven to move synchronously along the first direction, so that the relative position between the cutting mechanism 120 and the picking mechanism 130 can always remain unchanged.

[0056] More specifically, the tensioning member 150 is connected to the mounting plate 113 and the mounting bracket 114 , so the tensioning member 150 provides tensioning force to the picking mechanism 130 through the mounting bracket 114 .

[0057] The mounting bracket 114 can be slidably mounted via a guide rail slider assembly and the mounting plate 113. Specifically, the mounting bracket 114 is connected to the mounting plate 113 via two guide rail slider assemblies disposed at intervals, and the cutting drive member 121 is located between the two guide rail slider assemblies. In this way, the mounting bracket 114 can drive the cutting mechanism 120 to move more smoothly along the first direction.

[0058] It should be noted that in other embodiments, the transfer mechanism 110 may also adopt other structures, such as a multi-axis robot.

[0059] During the normal lamination process, the cutting mechanism 120 and the picking mechanism 130 can be driven by the transfer mechanism 110 to move in the second direction away from the lamination table 200, so as to avoid affecting the lamination process. More importantly, the upwardly moved cutting mechanism 120 and the picking mechanism 130 are not likely to interfere with the battery cell clamp 300, so the structure of the battery cell clamp 300 is not restricted, the structure of the battery cell clamp 300 and the battery cell processing equipment 10 can be simplified, and the battery cell clamp 300 can also be set shorter to ensure rigidity. Moreover, the battery cell clamp 300 can also be compatible with battery cells 30 with a larger thickness range.

[0060] In this embodiment, the stacking table 200 can be raised and lowered in a direction perpendicular to its bearing surface, i.e., in the second direction. After stacking is completed, the stacking table 200 first rises in the second direction to approach the diaphragm finishing device 100. After the diaphragm strip 20 is cut by the cutting mechanism 120, the stacking table 200 can immediately descend in the second direction and move away from the diaphragm finishing device 100, while the diaphragm finishing device 100 continues to perform the finishing operation on the cut diaphragm strip 20. In other words, before the diaphragm finishing device 100 completes the finishing operation, the stacking operation can be performed synchronously on the stacking table 200, which helps to improve the efficiency of battery cell production.

[0061] More specifically, in this embodiment, the cutting mechanism 120 further includes a cutter mounting plate 124 and a first guide member 125, the cutter 121 is mounted on the cutter mounting plate 124, and the cutter mounting plate 124 is mounted on the mounting bracket 114 through the first guide member 125. The first guide member 125 can be a structure in which a linear bearing and a guide rod cooperate, and a plurality of the first guide members 125 are provided. The cutting drive member 122 is in transmission connection with the cutter mounting plate 124, and can drive the cutter mounting plate 124 to drive the cutter 121 to move along the second direction, so that the diaphragm material strip 20 performs a cutting operation. With the assistance of the first guide member 125, the stability of the cutter 121 during the cutting process can be improved.

[0062] Please refer again Figure 4 In this embodiment, the cutting mechanism 120 further includes a membrane pressing plate 123, which is distributed on at least one side of the cutter 121. The membrane pressing plate 123 can press the membrane strip 20 before the cutter 121 cuts the membrane strip 20, thereby preventing the membrane strip 20 from being displaced during the cutting process by the cutter 121.

[0063] Specifically, the diaphragm pressing plate 123 can be extended and retracted along the second direction relative to the cutter 121. The diaphragm pressing plate 123 can be mounted on the cutter mounting plate 124, so that it can be driven by the cutting drive 122 to move synchronously with the cutter 121 along the second direction. Of course, the diaphragm pressing plate 123 can also be driven by other drive members instead of being synchronized with the cutter 121 to abut against the diaphragm material strip 20.

[0064] More specifically, in this embodiment, the cutting mechanism 120 also includes a second guide member (not shown) and an elastic member (not shown), the diaphragm pressure plate 123 is mounted on the cutter mounting plate 124 through the second guide member, and the elastic member is connected to the diaphragm pressure plate 123.

[0065] The second guide member may also adopt a structure in which a linear bearing cooperates with a guide rod, and can guide the diaphragm pressing plate 123 along the second direction, thereby improving the stability of the diaphragm pressing plate 123. The elastic member may adopt a structure such as a compression spring, and can provide the diaphragm pressing plate 123 with an elastic force along the second direction, so that the diaphragm pressing plate 123 can elastically abut against the diaphragm material strip 20, thereby helping to improve the pressing effect of the diaphragm pressing plate 123 on the diaphragm material strip 20.

[0066] Furthermore, in the present embodiment, the diaphragm pressure plate 123 can move with the cutter 121 toward the diaphragm strip 20 to be cut and abut against the diaphragm strip 20 before the cutter 121, and while the cutter 121 continues to move toward the diaphragm strip 20, the diaphragm pressure plate 123 can overcome the force of the elastic member and retreat relative to the cutter 121 until the cutter 121 cuts the diaphragm strip 20.

[0067] In the initial state, the diaphragm pressing plate 123 protrudes downward in the second direction relative to the cutter 121, so when the cutting drive 122 drives the cutter 121 and the diaphragm pressing plate 123 to move toward the diaphragm strip 20 to be cut, the diaphragm pressing plate 123 can first abut against the diaphragm strip 20. After the diaphragm pressing plate 123 abuts against the diaphragm strip 20, the cutting drive 122 will continue to drive. At this time, the diaphragm pressing plate 123 and the diaphragm strip 20 remain in abutment, and the diaphragm strip 20 generates a reverse force on the diaphragm pressing plate 123, so that the diaphragm pressing plate 123 overcomes the action of the elastic member and moves upward in the second direction relative to the cutter 121. In this way, the cutter 121 will gradually extend until it contacts the diaphragm strip 20 and cuts it.

[0068] Since the diaphragm pressing plate 123 remains in contact with the diaphragm strip 20 during the process of the cutter 121 cutting the diaphragm strip 20, it can fix the diaphragm strip 20 near the cutter 121, thereby preventing the diaphragm strip 20 from shifting during the cutting process, which is beneficial to improving the cutting effect.

[0069] The cutter 121 can cut the diaphragm material strip 20 by mechanical cutting, thermal cutting, etc. Specifically in this embodiment, the cutter 121 includes a connecting plate 1211, a heating wire 1212 and a pre-tightening member 1213, the two connecting plates 1211 are rotatably mounted on the cutter mounting plate 124, the two ends of the heating wire 1212 are respectively connected to the two connecting plates 1211, and the pre-tightening member 1213 is connected to the connecting plate 1213.

[0070] The heating wire 1212 is energized to generate heat, which can melt the diaphragm strip 20, so the cutter 121 cuts off the diaphragm strip 20 by thermal cutting. The pre-tightening member 1213 can be selected as a tension spring, which can apply a pre-tightening force to the connecting plate 1213 to make it have a tendency to rotate, thereby tightening the heating wire 1212.

[0071] Please refer again Figure 1 In this embodiment, a suction plate 210 is provided on the edge of the lamination platform 200 facing the tail winding device, and the suction plate 210 can carry and absorb the diaphragm material strip 20 .

[0072] The suction plate 210 can absorb and fix the membrane strip 20, effectively preventing the membrane strip 20 from shaking due to the surrounding air flow disturbance. Moreover, after the membrane strip 20 is cut by the cutting mechanism 120, the suction plate 210 can also absorb and fix the broken end of the membrane strip 20, preventing the broken end of the membrane strip 20 from drifting and failing to be picked up by the picking mechanism 130.

[0073] Specifically, the suction plate 210 is arranged opposite to the diaphragm pressing plate 123. Therefore, when the diaphragm pressing plate 123 moves downward, the diaphragm material strip 20 can be clamped between the suction plate 210 and the diaphragm pressing plate 123 in cooperation with the diaphragm pressing plate 123, so that the diaphragm material strip 20 can be better fixed.

[0074] More specifically, in this embodiment, a negative pressure hole (not shown) may be provided on the surface of the suction plate 210, and a negative pressure channel connected to the suction hole is formed inside the suction plate 210. The negative pressure channel is used to connect to an external negative pressure device, so that the suction plate 210 can adsorb the diaphragm material strip 20 through the negative pressure. Moreover, by switching the switch state of the negative pressure device, the diaphragm material strip 20 can also be quickly released.

[0075] After the lamination is completed, the cell clamp 300 clamps the cell 30 from the lamination table 200 and transfers it to the tail winding device, thereby pulling out a section of the diaphragm strip 20 between the lamination table 300 and the tail winding device. Then, the cutting mechanism 120 moves downward along the second direction under the drive of the transfer mechanism 110, and cuts off the diaphragm strip 20 between the lamination table 200 and the tail winding device. The picking mechanism 130 picks up the broken end of the cut diaphragm strip 20 close to the tail winding device, and moves toward the tail winding device along the first direction under the drive of the transfer mechanism 110. With the cooperation of the cell clamp 300 and the diaphragm finishing device 100, the cell 30 and the diaphragm strip 20 reserved at its tail can be smoothly transferred to the tail winding device. Since the diaphragm finishing device 100 will not interfere with the battery cell clamp 300 , the structure of the battery cell clamp 300 will not be restricted by the diaphragm finishing device 100 , so the structure of the battery cell processing equipment 10 can be simplified.

[0076] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0077] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A diaphragm finishing device, characterized in that: It includes a transfer mechanism, a cutting mechanism and a picking mechanism. The cutting mechanism and the picking mechanism are both installed on the transfer mechanism, and the picking mechanism is located on one side of the cutting mechanism. The cutting mechanism includes a cutter and a cutting drive component, and the picking mechanism includes a clamping component and a clamping drive component.

2. The diaphragm tailing device according to claim 1, characterized in that: The picking mechanism can be slidably mounted on the transfer mechanism, and the diaphragm finishing device also includes a tensioning member, which is connected to the transfer mechanism and the picking mechanism.

3. The diaphragm finishing device according to claim 2, characterized in that: The tensioning member is configured as a spring or a cylinder.

4. The diaphragm tailing device according to claim 1, characterized in that: The transfer mechanism is provided with a lifting end capable of being raised and lowered, and the cutting mechanism and the picking mechanism are both installed on the lifting end of the transfer mechanism.

5. The diaphragm tailing device according to claim 4, characterized in that: The sliding direction of the picking mechanism is perpendicular to the lifting direction of the lifting end of the transfer mechanism.

6. The diaphragm tailing device according to claim 1, characterized in that: The transfer mechanism also includes a support plate, a lifting drive member, a mounting plate and a mounting bracket. The mounting plate is transmission-connected to the lifting drive member. The mounting bracket is mounted on the mounting plate. The cutting mechanism and the picking mechanism are both arranged on the mounting bracket. The diaphragm finishing device also includes a tensioning member, which is connected to the mounting plate and the mounting bracket.

7. The diaphragm tailing device according to claim 6, characterized in that: The mounting bracket is connected to the mounting plate via two guide rail slider assemblies that are spaced apart, and the cutting drive component is located between the two guide rail slider assemblies.

8. The diaphragm tailing device according to claim 6, characterized in that: The cutting mechanism further comprises a cutter mounting plate and a first guide member, the cutter is mounted on the cutter mounting plate, and the cutter mounting plate is mounted on the mounting bracket via the first guide member.

9. The diaphragm finishing device according to claim 1, characterized in that: The cutting mechanism further comprises a diaphragm pressing plate, and the diaphragm pressing plate is distributed on at least one side of the cutting knife.

10. The diaphragm finishing device according to claim 9, characterized in that: The diaphragm pressure plate is retractable relative to the cutter.

11. The diaphragm finishing device according to claim 9, characterized in that: The cutting mechanism also includes a cutter mounting plate, a second guide member and an elastic member, the cutter is mounted on the cutter mounting plate, the cutting drive member is transmission-connected to the cutter mounting plate, the diaphragm pressure plate is mounted on the cutter mounting plate via the second guide member, and the elastic member is connected to the diaphragm pressure plate.

12. The diaphragm finishing device according to claim 11, characterized in that: The diaphragm pressure plate can move with the cutter toward the diaphragm strip to be cut and abut against the diaphragm strip before the cutter. In the process of the cutter continuing to move toward the diaphragm strip, the diaphragm pressure plate can overcome the force of the elastic member and retreat relative to the cutter until the cutter cuts the diaphragm strip.

13. The diaphragm finishing device according to claim 1, characterized in that: The cutting mechanism also includes a cutter mounting plate, the cutter includes a connecting plate, a heating wire and a pre-tightening member, the two connecting plates are rotatably mounted on the cutter mounting plate, the two ends of the heating wire are respectively connected to the two connecting plates, and the pre-tightening member is connected to the connecting plate.

14. A battery core processing device, characterized in that: It comprises a lamination platform and a diaphragm finishing device as described in any one of claims 1 to 13, wherein the diaphragm finishing device is arranged on one side of the lamination platform.

15. The battery core processing equipment according to claim 14, characterized in that: The stacking platform can be raised and lowered relative to the diaphragm finishing device in a direction perpendicular to the stacking platform bearing surface.

16. The battery core processing equipment according to claim 14, characterized in that: A suction plate is arranged on the edge of the lamination platform facing the diaphragm finishing device.

17. The battery core processing equipment according to claim 16, characterized in that: The cutting mechanism further comprises a membrane pressing plate, the suction plate is arranged opposite to the membrane pressing plate, and can clamp the membrane material strip between the suction plate and the membrane pressing plate.

18. The battery core processing equipment according to claim 14, characterized in that: It also includes a tail winding device and a battery cell clamp. The tail winding device is arranged on the side of the diaphragm tail winding device facing away from the stacking platform, and the picking mechanism can approach or move away from the tail winding device. The battery cell clamp can clamp the battery cell and move between the stacking platform and the tail winding device.

19. The battery core processing equipment according to claim 18, characterized in that: A clearance groove for the power core clamp to extend into is provided on the bearing surface of the stacking table. The stacking table also includes a finishing mechanism, which includes a finishing plate and a finishing drive. The finishing drive can drive the finishing plate to level the clearance groove and can drive the finishing plate to expose the clearance groove.

20. The battery core processing equipment according to claim 19, characterized in that: The tail winding device comprises a winding needle, and a avoiding notch for the winding needle to pass through is formed on the inner side of the battery core clamping claw.

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