Nail pulling equipment

Abstract

The invention relates to nail pulling equipment, and belongs to the technical field of battery manufacturing. The nail pulling equipment comprises a restraining tray; the nail pulling device comprises a lifting driving mechanism and a nail pulling mechanism, and the nail pulling mechanism comprises a first clamping jaw assembly and a second clamping jaw assembly; wherein the first clamping jaw assembly comprises a plurality of first clamping jaws, the second clamping jaw assembly comprises a plurality of second clamping jaws, the first clamping jaws are driven by the same driving part to move, the second clamping jaws are driven by the same driving part to move, and the first clamping jaws correspond to the second clamping jaws one to one. And the first clamping jaw and the corresponding second clamping jaw are close to each other or far away from each other. The nail pulling equipment can automatically pull out the sealing nail of the single battery, is simple in structure and has good nail pulling precision and nail pulling efficiency.

Description

Technical Field

[0001] The present application relates to the field of battery manufacturing technology, and in particular to a nail pulling device. Background Art

[0002] During the manufacturing process of lithium batteries, after the battery cells complete the liquid injection process, they need to be sent to the formation equipment to activate the battery cell materials inside the battery through the first charge to form a stable electrode interface. The battery cells are then capacity-sorted based on parameters such as voltage and capacity after formation.

[0003] During the formation process, electrolyte overflow may occur, so the temporary sealing nails need to be removed before the battery is fed into the formation equipment. However, the current nail removal equipment is not only complex in structure, but also has poor nail removal accuracy and efficiency. Summary of the Invention

[0004] To this end, the present application proposes a nail pulling device that can automatically remove the sealing nails of battery cells. It has a simple structure and has good nail pulling accuracy and efficiency.

[0005] The nail pulling equipment of some embodiments of the present application is used to remove sealing nails from battery cells, including: a restraint tray, arranged at a nail pulling station, for fixing multiple battery cells; a nail pulling device, including a lifting drive mechanism and a nail pulling mechanism, the lifting drive mechanism is used to drive the nail pulling mechanism to descend to a nail pulling height, the nail pulling mechanism includes a first clamping jaw assembly and a second clamping jaw assembly; wherein, the first clamping jaw assembly includes a plurality of first clamping jaws, and the plurality of first clamping jaws are arranged at intervals, the second clamping jaw assembly includes a plurality of second clamping jaws, and the plurality of second clamping jaws are arranged at intervals, the plurality of first clamping jaws move under the drive of the same driving member, the plurality of second clamping jaws move under the drive of the same driving member, the first clamping jaws correspond to the second clamping jaws one by one, and the first clamping jaws and the corresponding second clamping jaws approach or move away from each other.

[0006] Optionally, the first clamping jaw assembly includes a first driving member, which is used to drive multiple first clamping jaws to move synchronously, and the second clamping jaw assembly includes a second driving member, which is used to drive multiple second clamping jaws to move synchronously, and the driving directions of the first driving member and the second driving member are opposite.

[0007] Optionally, the nail pulling mechanism further includes a lifting plate, a first mounting plate and a second mounting plate, the executing end of the lifting drive mechanism is connected to the lifting plate, the first mounting plate and the second mounting plate are arranged side by side and are both slidably mounted on the lifting plate, a plurality of first clamps are arranged on the first mounting plate, a plurality of second clamps are arranged on the second mounting plate, the first driving member and the second driving member are both fixed to the lifting plate, the executing end of the first driving member is connected to the first mounting plate, and the executing end of the second driving member is connected to the second mounting plate.

[0008] Optionally, the nail pulling mechanism includes a first mounting plate and a second mounting plate, the first clamping jaw includes a first connecting portion and a first clamping portion, the second clamping jaw includes a second connecting portion and a second clamping portion, the first connecting portion connects the first mounting plate and the first clamping portion, the second connecting portion connects the second mounting plate and the second clamping portion, the first clamping portion and the second clamping portion correspond one to one, and the first clamping portion and the corresponding second clamping portion are arranged relative to each other.

[0009] Optionally, a rubber layer is provided on each side of the first clamping portion and the corresponding second clamping portion that are close to each other.

[0010] Optionally, the nail pulling mechanism further includes: a detection component, provided on the first clamping jaw assembly, for detecting whether the sealing nail is pulled out from the battery cell.

[0011] Optionally, the nail pulling mechanism includes a first mounting plate, and the detection assembly includes: a pressure bar, which is slidably mounted on the first mounting plate; an in-place sensor, which is arranged on the first mounting plate; a sensing member, which is arranged on the pressure bar; and a third driving member, which is arranged on the first mounting plate and is used to drive the pressure bar to descend; if the pressure bar can descend to be pressed against the surface of the battery cell, the in-place sensor detects that the sensing member has moved into place and sends a removal signal; if the in-place sensor does not detect that the sensing member has moved into place, it sends a non-removal signal.

[0012] Optionally, the nail pulling device further includes a transverse driving mechanism, which is used to drive the nail pulling mechanism to move between the nail pulling station and the unloading station; when the nail pulling mechanism reaches the unloading station, the first clamping jaw and the corresponding second clamping jaw move away from each other.

[0013] Optionally, the nail pulling device further comprises: a material collection box, which is arranged at the unloading station, and when the nail pulling mechanism reaches the unloading station, the material collection box is located at the lower side of the nail pulling mechanism.

[0014] Optionally, the restraint tray includes: a partition assembly, including a plurality of partitions arranged at intervals, with a placement space for battery cells formed between two adjacent partitions; a first end plate, arranged at one end of the partition assembly; a movable plate, slidably arranged at the other end of the partition assembly; a second end plate, arranged at the end of the movable plate away from the partition assembly; a clamping drive mechanism, installed on the second end plate, for driving the movable plate close to the partition assembly to press the plurality of partitions against the first end plate.

[0015] Compared with the prior art, this application has the following beneficial effects:

[0016] The nail removal device of the present embodiment includes multiple first jaws and multiple second jaws, each corresponding to the first jaws. The multiple first jaws are driven by the same driver, and the multiple second jaws are driven by the same driver. This allows the first jaws and corresponding second jaws to move closer to or further away from each other to jointly clamp or release the sealing nail. This nail removal device can automatically remove the sealing nails of battery cells, is simple in structure, and offers high nail removal accuracy and efficiency.

[0017] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 A schematic structural diagram of a nail removal device from a first perspective provided in an embodiment of the present application;

[0020] Figure 2 A schematic structural diagram of a nail removal device from a second perspective provided in an embodiment of the present application;

[0021] Figure 3 A schematic structural diagram of a nail pulling device of a nail pulling device provided in an embodiment of the present application;

[0022] Figure 4 for Figure 3 A partial enlarged view of point A in the middle;

[0023] Figure 5 A schematic structural diagram of a nail pulling mechanism of a nail pulling device provided in an embodiment of the present application;

[0024] Figure 6 for Figure 5 A partial enlarged view of point B in the middle;

[0025] Figure 7 A schematic structural diagram of a first-perspective view of a restraint tray of a nail removal device provided in an embodiment of the present application;

[0026] Figure 8 This is a structural schematic diagram from a second perspective of the restraint tray of the nail removal device provided in an embodiment of the present application.

[0027] Icons: 100-nail extraction device; 110-restraint tray; 111-partition assembly; 1111-partition; 1112-guide rod; 112-first end plate; 113-movable plate; 114-second end plate; 115-pressing drive mechanism; 1151-screw; 1152-tightening member; 116-extraction block; 120-nail extraction device; 130-lifting drive mechanism; 140-nail extraction mechanism; 141-first clamping jaw assembly; 1411-first driving member; 1412-first clamping jaw; 1413-first connecting portion; 1414-first clamping jaw Holding part; 1415-first rubber layer; 142-second clamping jaw assembly; 1421-second driving member; 1422-second clamping jaw; 1423-second connecting part; 1424-second clamping part; 143-lifting plate; 144-first mounting plate; 145-second mounting plate; 146-detection assembly; 1461-pressure strip; 1462-in-place sensor; 1463-sensing member; 1464-third driving member; 150-transverse driving mechanism; 151-transverse plate; 160-collection box; 200-battery cell; 210-cover. DETAILED DESCRIPTION

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without creative work are within the scope of protection of the present application.

[0030] The nail extraction device 100 according to some embodiments of the present application is used to remove sealing nails from a battery cell 200 .

[0031] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, the nail extraction device 100 includes a restraint tray 110 and a nail extraction device 120. The restraint tray 110 is disposed at the nail extraction station and is used to secure multiple battery cells 200. The nail extraction device 120 includes a lifting drive mechanism 130 and a nail extraction mechanism 140. The lifting drive mechanism 130 is used to drive the nail extraction mechanism 140 to descend to a nail extraction height. The nail extraction mechanism 140 includes a first clamping jaw assembly 141 and a second clamping jaw assembly 142. The first clamping jaw assembly 141 includes a plurality of first clamping jaws 1412, which are arranged at intervals. The second clamping jaw assembly 142 includes a plurality of second clamping jaws 1422, which are arranged at intervals. The plurality of first clamping jaws 1412 and the plurality of second clamping jaws 1422 are driven by the same driving member to move. The first clamping jaws 1412 and the second clamping jaws 1422 correspond to each other one by one, and the first clamping jaws 1412 and the corresponding second clamping jaws 1422 move toward or away from each other.

[0032] Multiple first clamping jaws 1412 are spaced apart along a first direction X, and multiple second clamping jaws 1422 are spaced apart along the first direction X. The first clamping jaws 1412 and corresponding second clamping jaws 1422 form a clamping unit to jointly clamp a sealing nail. Multiple clamping units are spaced apart along the first direction X, and each clamping unit corresponds to a sealing nail of a battery cell 200. The first clamping jaw 1412 and the second clamping jaw 1422 can move toward or away from each other along the first direction X; the first clamping jaw 1412 and the second clamping jaw 1422 can also move toward or away from each other along the second direction Y.

[0033] A plurality of battery cells 200 are placed on the restraint tray 110 at intervals along the first direction X. Each battery cell 200 is provided with a sealing pin and is fixed at a preset pin-pulling position under the action of the restraint tray 110. One side of the battery cell 200 along the third direction Z is a cover body 210. The cover body 210 is provided with a liquid injection hole. The sealing pin is a temporary rubber pin. After the battery cell 200 is injected with liquid, the sealing pin is used to plug the liquid injection hole to prevent electrolyte overflow during subsequent movement.

[0034] The lifting drive mechanism 130 drives the nail pulling mechanism 140 down to the nail pulling height along the third direction Z, and the nail pulling mechanism 140 clamps the sealing nail at the nail pulling height. The lifting drive mechanism 130 can be a common air cylinder, electric cylinder, etc., or a linear drive mechanism such as a motor screw nut mechanism.

[0035] The nail removal device 100 of the present embodiment includes multiple first clamping jaws 1412 and multiple second clamping jaws 1422. The first clamping jaws 1412 and the second clamping jaws 1422 are arranged in a one-to-one correspondence. The multiple first clamping jaws 1412 are driven by the same driver, and the multiple second clamping jaws 1422 are driven by the same driver. The first clamping jaws 1412 and the corresponding second clamping jaws 1422 can move closer to or farther away from each other to jointly clamp or release the sealing nail. The nail removal device 100 can automatically remove the sealing nails of the battery cell 200. It not only has a simple structure, but also has good nail removal accuracy and efficiency.

[0036] like Figure 3 and Figure 4 As shown, in some embodiments of the present application, the first clamping jaw assembly 141 includes a first driving member 1411, which is used to drive multiple first clamping jaws 1412 to move synchronously. The second clamping jaw assembly 142 includes a second driving member 1421, which is used to drive multiple second clamping jaws 1422 to move synchronously. The driving directions of the first driving member 1411 and the second driving member 1421 are opposite.

[0037] The first driving member 1411 is used to drive the plurality of first clamping jaws 1412 to move synchronously along the first direction X, and the second driving member 1421 is used to drive the plurality of second clamping jaws 1422 to move synchronously along the first direction X.

[0038] The first driving member 1411 and the second driving member 1421 are both cylinders. The first driving member 1411 and the second driving member 1421 extend simultaneously in opposite directions along the first direction X, driving the first clamping jaw 1412 and the corresponding second clamping jaw 1422 to approach each other in the first direction X to jointly clamp a sealing nail.

[0039] With this arrangement, the first jaw 1412 and the second jaw 1422 are driven by independent driving members respectively, and the driving directions of the two driving members are opposite, which facilitates flexible setting of the travel range of the first jaw 1412 and the second jaw 1422 and improves the nail pulling accuracy.

[0040] In other embodiments, multiple first jaws 1412 and multiple second jaws 1422 can also be driven by the same driving member, for example, by driving the bidirectional gear rack assemblies on both sides through the same motor, thereby driving the first jaws 1412 and the second jaws 1422 to move in opposite directions.

[0041] like Figure 3 and Figure 4As shown, in some embodiments of the present application, the nail pulling mechanism 140 also includes a lifting plate 143, a first mounting plate 144 and a second mounting plate 145, the execution end of the lifting drive mechanism 130 is connected to the lifting plate 143, the first mounting plate 144 and the second mounting plate 145 are arranged side by side and are both slidably installed on the lifting plate 143, a plurality of first clamps 1412 are arranged on the first mounting plate 144, and a plurality of second clamps 1422 are arranged on the second mounting plate 145, the first driving member 1411 and the second driving member 1421 are both fixed to the lifting plate 143, the execution end of the first driving member 1411 is connected to the first mounting plate 144, and the execution end of the second driving member 1421 is connected to the second mounting plate 145.

[0042] The first direction X and the second direction Y are two horizontal directions parallel to each other, and the third direction Z is a vertical direction.

[0043] The thickness direction of the first mounting plate 144 and the second mounting plate 145 is the second direction Y. The first mounting plate 144 and the second mounting plate 145 are arranged side by side along the second direction Y. The first mounting plate 144 and the second mounting plate 145 are respectively slidably mounted on the lifting plate 143 along the first direction X via a guide rail assembly. A plurality of first clamping jaws 1412 are spaced apart along the first direction X on the first mounting plate 144, and a plurality of second clamping jaws 1422 are spaced apart along the first direction X on the second mounting plate 145.

[0044] With this arrangement, the first mounting plate 144 can stably and reliably drive the movement of the plurality of first clamping jaws 1412 , and the second mounting plate 145 can stably and reliably drive the movement of the plurality of second clamping jaws 1422 , thereby improving the movement accuracy of the clamping jaws and thus improving the nail pulling accuracy.

[0045] like Figure 4 As shown, in some embodiments of the present application, the first clamping jaw 1412 includes a first connecting portion 1413 and a first clamping portion 1414, the second clamping jaw 1422 includes a second connecting portion 1423 and a second clamping portion 1424, the first connecting portion 1413 connects the first mounting plate 144 and the first clamping portion 1414, the second connecting portion 1423 connects the second mounting plate 145 and the second clamping portion 1424, the first clamping portion 1414 and the second clamping portion 1424 correspond one to one, and the first clamping portion 1414 and the corresponding second clamping portion 1424 are arranged relative to each other.

[0046] The first clamping portion 1414 and the corresponding second clamping portion 1424 are arranged opposite to each other along the first direction X to jointly clamp a sealing nail.

[0047] The first clamping jaw 1412 and the second clamping jaw 1422 switch between a release position and a clamping position. When the first clamping jaw 1412 and the second clamping jaw 1422 are in the release position, the distance between the first clamping portion 1414 and the second clamping portion 1424 in the first direction X is the largest; when the first clamping jaw 1412 and the second clamping jaw 1422 are in the clamping position, the distance between the first clamping portion 1414 and the second clamping portion 1424 in the first direction X is the smallest.

[0048] The first connection portion 1413 extends along the third direction Z, the upper end of the first connection portion 1413 along the third direction Z is connected to the first mounting plate 144, and the lower end extends to form the first clamping portion 1414; the second connection portion 1423 is L-shaped, the upper end of the second connection portion 1423 along the third direction Z is connected to the second mounting plate 145, the other end extends downward and then bends toward the first mounting plate 144, and the end extends to form the second clamping portion 1424.

[0049] By setting the first connecting portion 1413 and the second connecting portion 1423, the positions of the first clamping portion 1414 and the second clamping portion 1424 in the second direction Y can be changed, so that the first clamping portion 1414 and the corresponding second clamping portion 1424 are arranged in pairs in the first direction X to jointly clamp the same sealing nail.

[0050] In other embodiments, the first connecting portion 1413 and the second connecting portion 1423 may not be provided, and the first clamping portion 1414 may be directly provided at the lower end of the first mounting plate 144, and the second clamping portion 1424 may be directly provided at the lower end of the second mounting plate 145, and the first clamping portion 1414 and the second clamping portion 1424 may approach or move away from each other along the second direction Y.

[0051] like Figure 4 As shown, in some embodiments of the present application, a rubber layer is provided on the side of the first clamping portion 1414 and the corresponding second clamping portion 1424 that are close to each other.

[0052] The first clamping portion 1414 has a first rubber layer 1415 on its inner side, and the second clamping portion 1424 has a second rubber layer on its inner side. When clamping the sealing nail, the first rubber layer 1415 and the second rubber layer abut against the surface of the sealing nail, which can increase the friction with the sealing nail and improve the success rate of removing the sealing nail.

[0053] like Figure 4 、 Figure 5 and Figure 6 As shown, in some embodiments of the present application, the nail pulling mechanism 140 further includes a detection component 146 , which is disposed on the first clamping jaw component 141 and is used to detect whether the sealing nail is pulled out from the battery cell 200 .

[0054] By providing the detection assembly 146 , after the nail pulling mechanism 140 removes the sealing nail, it is possible to check whether there are any sealing nails remaining on the surface of the battery cell 200 , thereby determining whether the sealing nail has been removed from the battery cell 200 , thereby improving the reliability of the nail pulling operation.

[0055] like Figure 4 and Figure 6 As shown, in some embodiments of the present application, the detection assembly 146 includes a pressure bar 1461, an in-position sensor 1462, a sensing member 1463, and a third driving member 1464. The pressure bar 1461 is slidably mounted on the first mounting plate 144; the in-position sensor 1462 is disposed on the first mounting plate 144; the sensing member 1463 is disposed on the pressure bar 1461; and the third driving member 1464 is disposed on the first mounting plate 144 and is used to drive the pressure bar 1461 downward. If the pressure bar 1461 is able to descend to press against the surface of the battery cell 200, the in-position sensor 1462 detects that the sensing member 1463 has moved into position and transmits a disconnected signal. If the in-position sensor 1462 does not detect that the sensing member 1463 has moved into position, a disconnected signal is transmitted.

[0056] A third mounting plate is mounted on the first mounting plate 144. A holding strip 1461 is mounted to the third mounting plate via a linear sleeve extending along the third direction Z. The length of the holding strip 1461 extends along the first direction X, and the bottom surface of the holding strip 1461 is flat. Driven by the third driving member 1464, the holding strip 1461 descends along the third direction Z until it encounters an obstacle on its bottom side and cannot descend further. When the holding strip 1461 is pressed against the cover 210 of the battery cell 200, the sensor 1463 moves into position, determining that the sealing pins of the battery cell 200 corresponding to the holding strip 1461 have been completely removed. Upon detecting the sensor 1463, the in-position sensor 1462 transmits a removal signal. If there are any sealing pins remaining, the bottom surface of the pressure strip 1461 cannot continue to descend after abutting against the sealing pins, and the sensing part 1463 cannot move to the position, and it is determined that the sealing pin of at least one of the multiple battery cells 200 corresponding to the pressure strip 1461 has not been removed. The in-place sensor 1462 sends a non-removal signal, which is then handled manually.

[0057] like Figure 5 As shown, as an example, the restraint tray 110 secures ten battery cells 200 in a first direction X. The nail removal mechanism 140 is provided with two detection assemblies 146 spaced apart along the first direction X. Each holding bar 1461 detects whether the sealing nails of five battery cells 200 have been removed in the first direction X. This reduces the number of detection assemblies 146 while maintaining high detection accuracy. In other embodiments, the number of battery cells 200 detected by the holding bars 1461 in the first direction X and the number of detection assemblies 146 can be flexibly adjusted.

[0058] With this arrangement, the detection assembly 146 has a simple structure and can ensure detection accuracy, thereby simply and reliably detecting whether the sealing nails of the battery cell 200 are normally removed.

[0059] In other embodiments, the in-position sensor 1462 and the third driving member 1464 of the detection assembly 146 may also be installed on the lifting plate 143 , and the pressure strip 1461 may be slidably installed on the lifting plate 143 along the third direction Z.

[0060] like Figure 1 As shown, the nail pulling device 120 further includes a transverse driving mechanism 150 for driving the nail pulling mechanism 140 to move along the second direction Y.

[0061] The execution end of the transverse driving mechanism 150 is provided with a transverse plate 151 , and the lifting driving mechanism 130 is fixed to the transverse plate 151 . The transverse driving mechanism 150 drives the lifting driving mechanism 130 and the nail pulling mechanism 140 to move along the second direction Y through the transverse plate 151 .

[0062] It can be understood that the pressure strip 1461 is arranged on the side of the first mounting plate 144 away from the second mounting plate 145 along the second direction Y. After the first clamping jaw assembly 141 and the second clamping jaw assembly 142 pull out the sealing nail from the battery cell 200, the transverse driving mechanism 150 drives the nail pulling mechanism 140 to move along the second direction Y, so that the pressure strip 1461 moves to above the injection hole.

[0063] In some embodiments of the present application, the transverse driving mechanism 150 is used to drive the nail pulling mechanism 140 to move between the nail pulling station and the unloading station; when the nail pulling mechanism 140 reaches the unloading station, the first clamping jaw 1412 and the corresponding second clamping jaw 1422 move away from each other, and the nail pulling mechanism 140 releases the sealing nail.

[0064] The transverse drive mechanism 150 is a common motor-belt drive mechanism, which drives the transverse plate 151 to move along the second direction Y. When the nail pulling mechanism 140 reaches the unloading station, the first driving member 1411 and the second driving member 1421 drive the first clamping jaw 1412 and the second clamping jaw 1422 to move away from each other, releasing the sealing nail, which then falls naturally.

[0065] Through this arrangement, the sealing nails removed from the battery cells 200 can be automatically transferred from the nail pulling station to the unloading station, so as to realize repeated nail pulling operations and improve nail pulling efficiency.

[0066] like Figure 1 and Figure 2As shown, in some embodiments of the present application, the nail pulling device 100 also includes a material collection box 160, which is arranged at the unloading station. When the nail pulling mechanism 140 reaches the unloading station, the material collection box 160 is located on the lower side of the nail pulling mechanism 140. The material collection box 160 is used to receive the sealing nails released by the nail pulling mechanism 140.

[0067] The upper side of the aggregate box 160 has an opening, and the upper side of the aggregate box 160 is also provided with a feed hopper corresponding to the opening of the aggregate box 160. When the nail pulling mechanism 140 moves to the unloading station, the aggregate box 160 is located below the nail pulling mechanism 140, and the sealing nails fall into the aggregate box 160 from the feed hopper. After the aggregate box 160 is full of material, it is taken out and dumped.

[0068] With this arrangement, the removed sealing nails can be collected, which not only facilitates the repeated use of the sealing nails but also keeps the working environment clean.

[0069] like Figure 7 and Figure 8 As shown, in some embodiments of the present application, the restraint tray 110 includes a partition assembly 111, a first end plate 112, a movable plate 113, a second end plate 114, and a pressing drive mechanism 115. The partition assembly 111 includes a plurality of partitions 1111 arranged at intervals, with a placement space for placing battery cells 200 formed between two adjacent partitions 1111; the first end plate 112 is arranged at one end of the partition assembly 111; the movable plate 113 is slidably arranged at the other end of the partition assembly 111; the second end plate 114 is arranged at an end of the movable plate 113 away from the partition assembly 111; and the pressing drive mechanism 115 is installed on the second end plate 114 and is used to drive the movable plate 113 to approach the partition assembly 111 and press the plurality of partitions 1111 against the first end plate 112.

[0070] The thickness directions of the partition 1111, the first end plate 112, the movable plate 113, and the second end plate 114 all extend along the first direction X. The plurality of partitions 1111 are spaced apart along the first direction X. The first end plate 112 is disposed at one end of the partition assembly 111 along the first direction X. The movable plate 113 is slidably disposed at the other end of the partition assembly 111 along the first direction. The second end plate 114 is disposed at the end of the movable plate 113 away from the partition assembly 111 along the first direction X. The partition assembly 111 includes two sets of guide rods 1112 extending along the first direction X. The two sets of guide rods 1112 are spaced apart along the second direction Y. The ends of the partitions 1111 and the movable plate 113 along the second direction Y are slidably mounted on the guide rods 1112 to ensure that they do not skew during movement along the first direction Y.

[0071] The pressing drive mechanism 115 includes a screw rod 1151, a tightening member 1152, a nut and a pressure plate. The screw rod 1151 passes through the second end plate 114 along the first direction X. The nut is threadedly engaged with the screw rod 1151. The nut is installed on the first end plate 112. The tightening member 1152 is installed on the outer end of the screw rod 1151. The pressure plate is installed on the inner end of the screw rod 1151. Twisting the tightening member 1152 drives the screw rod 1151 to rotate, and the screw rod 1151 drives the pressure plate to push the movable plate 113 along the first direction X until the movable plate 113 presses the multiple partitions 1111 of the partition assembly 111 against the first end plate 112. The multiple partitions 1111 abut against each other, and a placement space is formed between two adjacent partitions 1111 to fix a battery cell 200.

[0072] There may be multiple pressing drive mechanisms 115 , which act on the movable plate 113 together; or there may be only one pressing drive mechanism 115 , which acts on the movable plate 113 in the center.

[0073] With this arrangement, multiple battery cells 200 can be simply and reliably fixed along the first direction X, so that the sealing nails reach the preset positions, making it easier for the nail pulling mechanism 140 to clamp the sealing nails after descending, thereby improving the nail pulling accuracy.

[0074] like Figure 7 As shown, in some embodiments of the present application, two partition assemblies 111 are provided, spaced apart along the second direction Y. Each of the two partition assemblies 111 is provided with a corresponding pressing drive mechanism 115 and movable plate 113. The two partition assemblies 111 share a first end plate 112 and a second end plate 114. Correspondingly, two nail pulling mechanisms 140 are provided, mounted on the same lifting plate 143, with each nail pulling mechanism 140 corresponding to each partition assemblies 111.

[0075] This arrangement can handle the nail pulling operations for a greater number of battery cells 200 , thereby improving the nail pulling efficiency.

[0076] In other embodiments, the number of partition assemblies 111 may also be one, three, four, etc.

[0077] like Figure 7 As shown, in some embodiments of the present application, the restraint tray 110 further includes a pull block 116 and a rod body. The rod body slidably passes through the second end plate 114 , the outer end of the rod body is connected to the pull block 116 , and the inner end is connected to the movable plate 113 .

[0078] After reversely loosening the tightening member 1152 of the compression drive mechanism 115 , the pull block 116 is pulled outward along the first direction X to open the movable plate 113 and quickly unlock the partition assembly 111 , thereby facilitating quick removal of the battery cell 200 .

[0079] like Figures 1 to 8 As shown, the working principle of the nail removal device 100 of the embodiment of the present application is as follows:

[0080] Load multiple battery cells 200 onto the restraint tray 110 , tighten the fastener 1152 , and use the movable plate 113 to press the partition assembly 111 against the first end plate 112 to fix the battery cells 200 in a predetermined position;

[0081] The transverse drive mechanism 150 drives the nail pulling mechanism 140 to move along the second direction Y to the nail pulling station. The lifting drive mechanism 130 drives the nail pulling mechanism 140 down to the nail pulling height. The first drive member 1411 and the second drive member 1421 extend in opposite directions. The multiple first clamping jaws 1412 move synchronously along the first direction X. The multiple second clamping jaws 1422 move synchronously along the first direction X. Each first clamping jaw 1412 and the corresponding second clamping jaw 1422 approach each other to clamp the corresponding sealing nail.

[0082] The lifting drive mechanism 130 drives the nail pulling mechanism 140 to rise a certain height to remove the sealing nail from the battery cell. The transverse drive mechanism 150 drives the nail pulling mechanism 140 to move along the second direction Y, so that the detection assembly 146 moves to the top of the battery cell 200.

[0083] The third driving member 1464 extends to drive the pressing bar 1461 downward;

[0084] If the pressure strip 1461 is able to abut against the surface of the battery cell 200 , the in-position sensor 1462 sends a removal signal;

[0085] If the holding bar 1461 cannot descend to abut against the surface of the battery cell 200, the in-position sensor 1462 sends a signal that the battery has not been removed, and manual processing is performed.

[0086] The lifting drive mechanism 130 drives the nail pulling mechanism 140 to continue to rise, and the transverse drive mechanism 150 drives the nail pulling mechanism 140 to move to the unloading station. The first driving member 1411 and the second driving member 1421 retract simultaneously, and each first clamping jaw 1412 and the corresponding second clamping jaw 1422 move away from each other, releasing the corresponding sealing nail, and the sealing nail falls into the collection box 160 below.

[0087] Loosen the tightening member 1152, pull the pull block 116 outward, and use the robot to remove the battery cell 200;

[0088] Repeat the above steps to carry out the nail removal operation of the next group of battery cells 200.

[0089] The nail pulling device 100 of the embodiment of the present application includes a restraint tray 110, a first drive member 1411 and a second drive member 1421. The restraint tray 110 fixes the position of the battery cell 200, the first drive member 1411 drives multiple first clamps 1412 to move synchronously, and the second drive member 1421 drives multiple second clamps 1422 to move synchronously, which simplifies the structure of the nail pulling mechanism 140 and has higher nail pulling accuracy; the detection component 146 detects whether there are any residual sealing nails after nail pulling, and every five battery cells 200 share a pressure strip 1461, which not only reduces the number of detection components 146, but also has better detection accuracy and improves the reliability of the nail pulling action; after removing the sealing nails, the nail pulling mechanism 140 moves to the unloading station to unload the sealing nails into the collection box 160, which can automatically collect the removed sealing nails and improve the nail pulling efficiency.

[0090] It should be noted that, unless there is any conflict, the features in the embodiments of this application can be combined with each other.

[0091] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A nail pulling device (100), characterized in that: include: A restraint tray (110) is provided at a nail pulling station and is used to fix a plurality of battery cells (200); The nail pulling device (120) comprises a lifting drive mechanism (130) and a nail pulling mechanism (140), wherein the lifting drive mechanism (130) is used to drive the nail pulling mechanism (140) to descend to a nail pulling height, and the nail pulling mechanism (140) comprises a first clamping jaw assembly (141) and a second clamping jaw assembly (142); The first clamping jaw assembly (141) includes a plurality of first clamping jaws (1412), and the plurality of first clamping jaws (1412) are arranged at intervals; the second clamping jaw assembly (142) includes a plurality of second clamping jaws (1422), and the plurality of second clamping jaws (1422) are arranged at intervals; the plurality of first clamping jaws (1412) move under the drive of the same driving member; the plurality of second clamping jaws move under the drive of the same driving member; the first clamping jaw (1412) and the second clamping jaw (1422) correspond one to one; the first clamping jaw (1412) and the corresponding second clamping jaw (1422) approach or move away from each other.

2. The nail removal device (100) according to claim 1, characterized in that The first clamping jaw assembly (141) includes a first driving member (1411), which is used to drive multiple first clamping jaws (1412) to move synchronously. The second clamping jaw assembly (142) includes a second driving member (1421), which is used to drive multiple second clamping jaws (1422) to move synchronously. The driving directions of the first driving member (1411) and the second driving member (1421) are opposite.

3. The nail removal device (100) according to claim 2, characterized in that The nail pulling mechanism (140) further includes a lifting plate (143), a first mounting plate (144) and a second mounting plate (145); the execution end of the lifting drive mechanism (130) is connected to the lifting plate (143); the first mounting plate (144) and the second mounting plate (145) are arranged side by side and are both slidably mounted on the lifting plate (143); a plurality of first clamping claws (1412) are arranged on the first mounting plate (144); a plurality of second clamping claws (1422) are arranged on the second mounting plate (145); the first driving member (1411) and the second driving member (1421) are both fixed to the lifting plate (143); the execution end of the first driving member (1411) is connected to the first mounting plate (144); and the execution end of the second driving member (1421) is connected to the second mounting plate (145).

4. The nail removal device (100) according to claim 1, characterized in that The nail pulling mechanism (140) includes a first mounting plate (144) and a second mounting plate (145); the first clamping jaw (1412) includes a first connecting portion (1413) and a first clamping portion (1414); the second clamping jaw (1422) includes a second connecting portion (1423) and a second clamping portion (1424); the first connecting portion (1413) connects the first mounting plate (144) and the first clamping portion (1414); the second connecting portion (1423) connects the second mounting plate (145) and the second clamping portion (1424); the first clamping portion (1414) and the second clamping portion (1424) correspond one to one, and the first clamping portion (1414) and the corresponding second clamping portion (1424) are arranged relative to each other.

5. The nail removal device (100) according to claim 4, characterized in that The first clamping portion (1414) and the corresponding second clamping portion (1424) are respectively provided with a rubber layer on their respective sides close to each other.

6. The nail removal device (100) according to claim 1, characterized in that The nail pulling mechanism (140) further includes: A detection assembly (146) is provided on the first clamping jaw assembly (141) and is used to detect whether the sealing pin is removed from the battery cell (200).

7. The nail removal device (100) according to claim 6, characterized in that The nail pulling mechanism (140) includes a first mounting plate (144), and the detection assembly (146) includes: A pressure strip (1461) slidably mounted on the first mounting plate (144); an in-position sensor (1462) disposed on the first mounting plate (144); A sensing element (1463) is provided on the pressure strip (1461); a third driving member (1464), provided on the first mounting plate (144), for driving the pressing bar (1461) to descend; If the pressing bar (1461) is able to descend to press against the surface of the battery cell (200), the in-position sensor (1462) detects that the sensing element (1463) has moved into position and sends a removal signal; If the in-place sensor (1462) does not detect that the sensing member (1463) has moved into position, a non-unplugged signal is sent.

8. The nail removal device (100) according to claim 1, characterized in that The nail pulling device (120) further includes a transverse driving mechanism (150), and the transverse driving mechanism (150) is used to drive the nail pulling mechanism (140) to move between the nail pulling station and the unloading station; When the nail pulling mechanism (140) reaches the unloading station, the first clamping jaw (1412) and the corresponding second clamping jaw (1422) move away from each other.

9. The nail removal device (100) according to claim 8, characterized in that The nail removal device (100) further comprises: A material collecting box (160) is provided at the unloading station. When the nail pulling mechanism (140) reaches the unloading station, the material collecting box (160) is located at the lower side of the nail pulling mechanism (140).

10. The nail removal device (100) according to claim 1, characterized in that The restraint tray (110) comprises: A partition assembly (111) includes a plurality of partitions (1111) arranged at intervals, wherein a placement space for placing a battery cell (200) is formed between two adjacent partitions (1111); a first end plate (112) disposed at one end of the partition assembly (111); A movable plate (113) is slidably disposed at the other end of the partition assembly (111); a second end plate (114) disposed at an end of the movable plate (113) away from the partition assembly (111); A pressing drive mechanism (115) is installed on the second end plate (114) and is used to drive the movable plate (113) to approach the partition assembly (111) to press the plurality of partitions (1111) against the first end plate (112).

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