Magnetic long-stroke avoidance carrier structure and device for lithium battery heat sealing

Abstract

The application provides a magnetic long-stroke position-avoiding carrier structure and device for lithium battery heat sealing. The lithium battery heat sealing magnetic long-stroke position-avoiding carrier structure comprises an upper die, a lower die, a carrier and a lifting assembly. The carrier is used for placing a battery cell. The upper die and the lower die are used for clamping the air bag edge of the battery cell when the upper die and the lower die are closed. The carrier comprises a support frame and a carrier body. The carrier body is arranged adjacent to the lower die, and a carrier groove is formed on one side of the carrier body close to the upper die. The carrier groove is used for placing the battery cell. The carrier body is arranged on the support frame. The lifting assembly is connected with the support frame. The lifting assembly is used for driving the support frame and the carrier body to move back and forth towards or away from the upper die. The lithium battery heat sealing magnetic long-stroke position-avoiding carrier structure can reduce the overflow problem of the battery cell, effectively realize a high effective area of the attached ferrofluorine rubber tape, and effectively realize the rapid replacement of the ferrofluorine rubber tape.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of battery processing equipment, in particular to a magnetic long-stroke position-avoiding carrier structure and device for lithium battery heat sealing. BACKGROUND

[0002] The preparation process of a lithium battery includes the following steps: pole piece coating, pole piece winding, aluminum plastic film packaging, cell formation, cell cutting and packaging, post-processing and the like, wherein the cell cutting and packaging includes the piercing and liquid extraction packaging of the air bag edge of the cell and the cutting of the air bag edge of the cell, and more, in order to ensure the sealing effect of the packaging of one side of the air bag edge of the cell, the process of air bag edge sealing of the cell is added after the piercing and liquid extraction packaging of the air bag edge of the cell, for example, a Chinese patent application No. 202110346430.9 discloses that the first packaging mechanism and the second packaging mechanism perform high-precision packaging of the air bag edge of the cell, generally, the sealing is achieved by relatively hot-pressing the air bag edge of the cell by using the upper heat sealing head and the lower heat sealing head, and since the distance between the carrier and the lower heat sealing head is relatively close, the temperature of the carrier is relatively high, and when the air bag edge of the cell is hot-pressed, the temperature is generally transmitted to other areas of the cell through the aluminum plastic film, thereby causing the problem of overflow of the tab glue (hereinafter referred to as overflow glue) of the cell, and the overflowed tab glue is attached to the carrier, the upper heat sealing head and the lower heat sealing head, thereby causing pollution of the carrier, the upper heat sealing head and the lower heat sealing head, and in view of the problem of overflow glue, in order to improve the convenience of cleaning the glue, a layer of Teflon tape is generally attached to the carrier, the upper heat sealing head 130 and the lower heat sealing head, at this time, the Teflon tape needs to be frequently replaced regularly, but due to the need for air bag edge sealing of the cell, the gap between the lower heat sealing head and the carrier is small, so that the Teflon tape is difficult to be folded and attached between the upper heat sealing head 130 and the carrier, so that when the Teflon tape is attached, the effective attachment area of the Teflon tape on the lower heat sealing head is limited, that is, the covering effect of the Teflon tape on the lower heat sealing head is not good, and the problem of pollution of the lower heat sealing head still exists, and at this time, the attached Teflon tape is easily lifted by the air bag edge of the cell on the carrier, thereby affecting the sealing effect, and since the distance between the carrier and the lower heat sealing head is relatively close, the temperature of the carrier is relatively high, further, if the Teflon tape is directly attached to the lower heat sealing head and the carrier, the temperature of the carrier will be further increased, thereby causing the problem of overflow glue to be more serious, and even affecting the performance of the cell. SUMMARY

[0003] The purpose of the present application is to overcome the deficiencies in the prior art, and to provide a magnetic long-stroke position-avoiding carrier structure and device for lithium battery heat sealing, which can reduce the problem of overflow glue of the cell, effectively increase the effective attachment area of the Teflon tape, and effectively realize the rapid replacement of the Teflon tape.

[0004] The purpose of the present application is achieved by the following technical solutions:

[0005] A magnetic long-stroke avoidance carrier structure for lithium battery heat sealing, comprising an upper die, a lower die and a carrier, the carrier is used for placing a battery cell, the upper die and the lower die are used for clamping the air bag edge of the battery cell when the upper die and the lower die are closed, and further comprising a lifting assembly;

[0006] The carrier comprises a support frame and a carrier body, the carrier body is arranged adjacent to the lower die, and a carrier groove is formed on one side of the carrier body close to the upper die, the carrier groove is used for placing a battery cell, and the carrier body is arranged on the support frame;

[0007] The lifting assembly is connected with the support frame, and the lifting assembly is used to drive the support frame and the carrier to move back and forth towards or away from the upper die.

[0008] In one embodiment, the magnetic long-stroke avoidance carrier structure for lithium battery heat sealing further comprises a rack, the upper die and the lower die are arranged opposite to each other on the rack, and the upper die is in sliding connection with the rack;

[0009] The lifting assembly is a driving cylinder, the driving cylinder is located on the side of the support frame away from the upper die, and the driving cylinder is arranged on the rack, and the power output end of the driving cylinder is connected with the support frame.

[0010] In one embodiment, the magnetic long-stroke avoidance carrier structure for lithium battery heat sealing further comprises a magnetic long-stroke avoidance assembly, the magnetic long-stroke avoidance assembly is located on the side of the support frame close to the lifting assembly, one end of the magnetic long-stroke avoidance assembly is movably arranged on the rack, and the other end of the magnetic long-stroke avoidance assembly abuts against the support frame when the driving cylinder drives the support frame to move away from the upper die.

[0011] In one embodiment, the magnetic long-stroke avoidance assembly comprises an adjusting piece and a magnetic top holding piece, the magnetic top holding piece is located on the side of the support frame close to the lifting assembly, one end of the magnetic top holding piece is connected with the rack, the other end of the magnetic top holding piece is movably connected with the adjusting piece, the adjusting piece moves on the magnetic top holding piece towards or away from the support frame, the adjusting piece abuts against the support frame when the driving cylinder drives the support frame to move away from the upper die, and the distance between the magnetic top holding piece and the upper die is greater than the distance between the lower die and the upper die.

[0012] In one of the embodiments, the magnetic suction top supporting piece comprises a magnetic suction piece and a top supporting connecting piece, one end of the magnetic suction piece is movably connected with the adjusting piece, the other end of the magnetic suction piece is detachably connected with one end of the top supporting connecting piece, and the other end of the top supporting connecting piece is connected with the rack.

[0013] In one of the embodiments, the top supporting connecting piece comprises a connecting part and a first magnetic suction part, one end of the connecting part is connected with the rack, and the first magnetic suction part is embedded in the other end of the connecting part.

[0014] The magnetic suction piece comprises a sleeve part and a second magnetic suction part, a sleeve groove is formed in the sleeve part, one end of the first magnetic suction part embedded in the connecting part is located at the sleeve groove and is detachably connected with the sleeve part, and the second magnetic suction part is embedded in the bottom of the sleeve groove, and the first magnetic suction part is magnetically connected with the second magnetic suction part.

[0015] In one of the embodiments, a taking and placing hole is formed in the groove wall of the sleeve groove, the taking and placing hole is communicated with the sleeve groove, and the connecting part is used to pass through the taking and placing hole and slide away from the taking and placing hole when the sleeve part is separated from the connecting part.

[0016] In one of the embodiments, the number of the magnetic suction type long-stroke avoiding position assemblies is two, and the two magnetic suction type long-stroke avoiding position assemblies are oppositely arranged on the two sides of the driving cylinder.

[0017] In one of the embodiments, a guide piece is arranged on the rack, the guide piece is located on the side of the supporting frame close to the driving cylinder, the guide piece is connected with the supporting frame, and the guide piece is slidingly connected with the rack.

[0018] A magnetic suction type long-stroke avoiding position carrier device for lithium battery heat sealing comprises a manipulator and the magnetic suction type long-stroke avoiding position carrier structure for lithium battery heat sealing according to any one of the embodiments, and the manipulator is used to grab the battery cell on the carrier groove.

[0019] Compared with the prior art, the present application has at least the following advantages:

[0020] The lithium battery heat sealing magnetic suction type long-stroke position-avoiding carrier structure of the present application is connected with the lifting assembly and the support frame, and the lifting assembly is used to drive the support frame and the carrier to move back and forth towards the direction of approaching or moving away from the upper mold, and the carrier is arranged on the support frame, so that the battery cell placed on the carrier groove can increase the distance between the carrier and the lower mold through the lifting assembly, and the battery cell on the carrier groove can be relatively far away from the lower mold without sealing, thereby reducing the influence of the temperature of the lower mold on the temperature of the battery cell on the carrier groove, and reducing the overflow problem of the battery cell, and reducing the mutual interference of the lower mold and the carrier groove when the iron fluoride tape is attached, thereby better realizing the rapid replacement of the iron fluoride on the lower mold and the carrier groove, and effectively realizing the increase of the effective area of the iron fluoride tape attached to the lower mold and the carrier, thereby better ensuring the sealing efficiency and quality of the battery cell. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0022] Figure 1 The structure diagram of the lithium battery heat sealing magnetic suction type long-stroke position-avoiding carrier structure of an embodiment of the present application is shown in the figure.

[0023] Figure 2 The structure diagram of the lithium battery heat sealing magnetic suction type long-stroke position-avoiding carrier structure of an embodiment of the present application is shown in the figure. Figure 1 The other structure diagram of the lithium battery heat sealing magnetic suction type long-stroke position-avoiding carrier structure of an embodiment of the present application is shown in the figure.

[0024] Figure 3 The other structure diagram of the lithium battery heat sealing magnetic suction type long-stroke position-avoiding carrier structure of an embodiment of the present application is shown in the figure. Figure 2 The partial enlarged view of A of the lithium battery heat sealing magnetic suction type long-stroke position-avoiding carrier structure of an embodiment of the present application is shown in the figure.

[0025] Figure 4 The other structure diagram of the lithium battery heat sealing magnetic suction type long-stroke position-avoiding carrier structure of an embodiment of the present application is shown in the figure. Figure 1 The other structure diagram of the lithium battery heat sealing magnetic suction type long-stroke position-avoiding carrier structure of an embodiment of the present application is shown in the figure.

[0026] Figure 5 The exploded view of the lithium battery heat sealing magnetic suction type long-stroke position-avoiding carrier structure of another embodiment of the present application is shown in the figure.

[0027] Figure 6 The other structure diagram of the lithium battery heat sealing magnetic suction type long-stroke position-avoiding carrier structure of an embodiment of the present application is shown in the figure. Figure 5 The partial view of the lithium battery heat sealing magnetic suction type long-stroke position-avoiding carrier structure of an embodiment of the present application is shown in the figure. DETAILED DESCRIPTION

[0028] For the purposes of the present application, reference will be made to the accompanying drawings in which: The application is described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments of the application are shown. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, this application is intended to cover any and all adaptations of the present application. Therefore, it is manifestly intended that this application be limited only by the following claims and equivalents thereof.

[0029] It should be noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present. As used herein, the terms "vertical", "horizontal", "left", "right", and the like are merely used for the purpose of illustration and are not intended to be limiting.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0031] The application provides a magnetic long-stroke avoidance carrier structure for lithium battery thermal sealing. The magnetic long-stroke avoidance carrier structure for lithium battery thermal sealing comprises an upper die, a lower die, a carrier and a lifting assembly. The carrier is used to place the battery cell. The upper die and the lower die are used to clamp the air bag edge of the battery cell when the upper die and the lower die are closed. The carrier comprises a support frame and a carrier body. The carrier body is adjacent to the lower die, and a carrier groove is formed on one side of the carrier body close to the upper die. The carrier groove is used to place the battery cell, and the carrier body is arranged on the support frame. The lifting assembly is connected with the support frame, and the lifting assembly is used to drive the support frame and the carrier body to move back and forth in the direction close to or away from the upper die.

[0032] The magnetic long-stroke avoidance carrier structure for lithium battery thermal sealing makes the lifting assembly connected with the support frame, and the lifting assembly is used to drive the support frame and the carrier body to move back and forth in the direction close to or away from the upper die. The carrier body is arranged on the support frame, so that the battery cell placed on the carrier groove can increase the distance between the carrier body and the lower die through the lifting assembly. Therefore, the battery cell on the carrier groove can be relatively far away from the lower die without sealing, thereby reducing the influence of the temperature of the lower die on the temperature of the battery cell on the carrier groove, reducing the overflow problem of the battery cell, reducing the mutual interference of the lower die and the carrier groove when the lower die and the carrier groove are attached with the Teflon tape, thereby better realizing the rapid replacement of Teflon at the lower die and the carrier groove, effectively increasing the attachment effective area of the Teflon tape at the lower die and the carrier, and better ensuring the sealing efficiency and quality of the battery cell.

[0033] In order to better understand the magnetic long-stroke avoidance carrier structure for lithium battery heat sealing, the following further explains the magnetic long-stroke avoidance carrier structure for lithium battery heat sealing:

[0034] Please refer to Figure 1 , Figure 2 and Figure 4 , an embodiment of the magnetic long-stroke avoidance carrier structure for lithium battery heat sealing 10 includes an upper die 100, a lower die 200, a carrier 300, and a lifting assembly 400A. The carrier 300 is used to place the battery cell 20, and the upper die 100 and the lower die 200 are used to clamp the air bag edge of the battery cell 20 when the upper die 100 and the lower die 200 are closed. The carrier 300 includes a support frame 310 and a carrier 320, the carrier 320 is arranged adjacent to the lower die 200, and the carrier 320 is provided with a carrier groove 301 on one side close to the upper die 100, the carrier groove 301 is used to place the battery cell 20, and the carrier 320 is arranged on the support frame 310. The lifting assembly 400A is connected with the support frame 310, and the lifting assembly 400A is used to drive the support frame 310 and the carrier 320 to move back and forth towards or away from the upper die 100.

[0035] The above-mentioned magnetic long-stroke avoidance carrier structure for lithium battery heat sealing 10 makes the lifting assembly 400A connected with the support frame 310, and the lifting assembly 400A is used to drive the support frame 310 and the carrier 320 to move back and forth towards or away from the upper die 100, and the carrier 320 is arranged on the support frame 310, so that the battery cell 20 placed in the carrier groove 301 can increase the distance between the carrier 320 and the lower die 200 through the lifting assembly 400A, and the battery cell 20 in the carrier groove 301 can be relatively far away from the lower die 200 without sealing, thereby reducing the influence of the temperature of the lower die 200 on the temperature of the battery cell 20 in the carrier groove 301, and reducing the overflow problem of the battery cell 20, and reducing the mutual interference of the lower die 200 and the carrier groove 301 when the Teflon tape is attached, thereby better realizing the rapid replacement of Teflon at the lower die 200 and the carrier groove 301, and effectively realizing the increase of the effective area of the Teflon tape attached at the lower die 200 and the carrier 300, thereby better ensuring the sealing efficiency and quality of the battery cell 20.

[0036] Please refer to Figure 1 , Figure 2 , Figure 4 and Figure 5In one of the embodiments, the magnetic attraction type long-stroke avoidance carrier structure 10 for lithium battery heat sealing further comprises a rack 400, the upper mold 100 and the lower mold 200 are oppositely arranged on the rack 400, and the upper mold 100 is in sliding connection with the rack 400. Further, the lifting assembly 400A is a driving cylinder, the driving cylinder is located on the side of the support frame 310 away from the upper mold 100, and the driving cylinder is arranged on the rack 400. The power output end of the driving cylinder is connected with the support frame 310, and the stability of the support frame 310 and the carrier 320 moving back and forth towards the direction close to or away from the upper mold 100 is better realized.

[0037] Please see Figures 1 to 3It can be understood that a general cylinder has two strokes. For example, the battery cell 20 is placed on the carrier groove 301, and the air bag side of the battery cell 20 protrudes from the carrier groove 301 and abuts against the lower mold 200. If the stroke of the driving cylinder is set to drive the support frame 310 to be located at a position flush with the lower mold 200 and further located at a position away from the upper mold 100, mechanical interference between the upper mold 100 and the air bag side of the battery cell 20 will affect the setting accuracy of the air bag side of the battery cell 20, and further affect the resealing accuracy of the air bag side of the battery cell 20. Therefore, the stroke of the general driving cylinder is set to drive the support frame 310 to be located at a position flush with the lower mold 200 and further located at a position between the upper mold 100 and the lower mold 200. However, when the driving cylinder drives the support frame 310 to be located between the upper mold 100 and the lower mold 200, the distance between the carrier 320 and the lower mold 200 is increased, which can better realize the increase of the effective area of the Teflon tape attached to the lower mold 200 and the carrier 300. However, the driving cylinder, the carrier 320, and the support frame 310 still have a shielding effect on the side of the lower mold 200 close to the carrier 320, which still affects the replacement efficiency of the Teflon tape of the lower mold 200. Therefore, in one embodiment, the magnetic type long-stroke avoidance carrier structure 10 for lithium battery thermal sealing further comprises a magnetic type long-stroke avoidance assembly 500. The magnetic type long-stroke avoidance assembly 500 is located on the side of the support frame 310 close to the lifting assembly 400A, one end of the magnetic type long-stroke avoidance assembly 500 is movably arranged on the rack 400, and the other end of the magnetic type long-stroke avoidance assembly 500 abuts against the support frame 310 when the driving cylinder drives the support frame 310 to move away from the upper mold 100.It can be understood that the driving cylinder still adopts two strokes, but the stroke of the driving cylinder is to drive the support frame 310 to be located between the upper die 100 and the lower die 200 and further to be located away from the upper die 100, further cooperating with the magnetic long-stroke avoidance assembly 500 located on the side of the support frame 310 close to the lifting assembly 400A, and the other end of the magnetic long-stroke avoidance assembly 500 abuts against the support frame 310 when the driving cylinder drives the support frame 310 to move away from the upper die 100, that is, the magnetic long-stroke avoidance assembly 500 is movably arranged on the rack 400, so that the driving cylinder is forced to form a third stroke by the magnetic long-stroke avoidance assembly 500 when the driving cylinder is in the stroke of driving the support frame 310 to be located away from the upper die 100, at this time, the stroke of the driving cylinder is to drive the support frame 310 to be located flush with the lower die 200, thereby realizing effective sealing of the air bag edge of the battery cell 20, further making the magnetic long-stroke avoidance assembly 500 disengage from the rack 400, at this time, the stroke of the driving cylinder is maintained to drive the support frame 310 to be located flush with the lower die 200, thereby making the support frame 310 and the carrier 320 not to shield the end of the lower die 200 close to the upper die 100, thereby realizing complete exposure of the end of the lower die 200 close to the upper die 100, and better realizing the improvement of the replacement efficiency of the Teflon tape at the lower die 200, that is, better realizing the rapid replacement of the Teflon at the lower die 200.

[0038] Please refer to Figures 1 to 3 It should be noted that if a driving cylinder with multiple strokes, such as a three-stroke driving cylinder, is directly used, on the one hand, the cost of the magnetic long-stroke avoidance carrier structure 10 for lithium battery hot precision sealing will be greatly increased, and on the other hand, due to the difficulty in ensuring the accuracy of the stroke position of the driving cylinder in long-term back-and-forth movement, the support frame 310 will not be located flush with the lower die 200 due to the difficulty in ensuring the accuracy of the stroke position of the driving cylinder, thereby affecting the sealing precision of the air bag edge of the battery cell 20 when the upper die 100 and the lower die 200 are closed, and further affecting the sealing quality of the air bag edge of the battery cell 20. Therefore, in the present application, the magnetic long-stroke avoidance assembly 500 is movably arranged on the rack 400, and the other end of the magnetic long-stroke avoidance assembly 500 abuts against the support frame 310 when the driving cylinder drives the support frame 310 to move away from the upper die 100, that is, the driving cylinder is forced to form a third stroke by the magnetic long-stroke avoidance assembly 500. Since the magnetic long-stroke avoidance assembly 500 can easily realize accurate position control, the accuracy of the driving cylinder driving the support frame 310 to be located flush with the lower die 200 is better ensured, thereby better ensuring the sealing quality of the air bag edge of the battery cell 20.

[0039] Please see Figures 1 to 3 In one embodiment, the magnetic long-stroke avoidance assembly 500 includes an adjusting member 510 and a magnetic top holding member 520. The magnetic top holding member 520 is located on one side of the support frame 310 close to the lifting assembly 400A. One end of the magnetic top holding member 520 is connected to the rack 400, and the other end of the magnetic top holding member 520 is movably connected to the adjusting member 510. The adjusting member 510 moves on the magnetic top holding member 520 towards or away from the support frame. The adjusting member 510 abuts against the support frame 310 when the driving cylinder moves the support frame 310 away from the upper die 100. The distance between the magnetic top holding member 520 and the upper die 100 is greater than the distance between the lower die 200 and the upper die 100. It can be understood that the one end of the magnetic top holding member 520 is connected to the rack 400, and the other end of the magnetic top holding member 520 is movably connected to the adjusting member 510, which means that the adjusting member 510 can quickly and effectively adjust and control the stroke position of the driving cylinder driving the support frame 310. The distance between the magnetic top holding member 520 and the upper die 100 is greater than the distance between the lower die 200 and the upper die 100, which means that when the adjusting member 510 is separated from the magnetic top holding member 520, the stroke of the driving cylinder driving the support frame 310 is located at the position of the lower die 200 away from the upper die 100, which better ensures the complete exposure of the end of the lower die 200 close to the upper die 100, and better realizes the improvement of the replacement efficiency of the Teflon tape of the lower die 200, that is, better realizes the quick replacement of the Teflon at the lower die 200.

[0040] Please see Figures 2 to 5In one of the embodiments, the magnetic suction top holder 520 comprises a magnetic suction piece 521 and a top holding connecting piece 522, one end of the magnetic suction piece 521 is movably connected with the adjusting piece 510, the other end of the magnetic suction piece 521 is detachably connected with one end of the top holding connecting piece 522, and the other end of the top holding connecting piece 522 is connected with the rack 400. It can be understood that the one end of the magnetic suction piece 521 is movably connected with the adjusting piece 510, and the other end of the magnetic suction piece 521 is detachably connected with one end of the top holding connecting piece 522, that is, the adjusting piece 510 is detachably connected with the magnetic suction piece 521 and the top holding connecting piece 522, so that when the adjusting piece 510 is movably connected with the magnetic suction piece 521, the stroke position of the driving cylinder driving the support frame 310 can be quickly and effectively adjusted and controlled, and when the magnetic suction piece 521 drives the adjusting piece 510 to be separated from the top holding connecting piece 522, the stroke of the driving cylinder can be quickly and simply adjusted to drive the support frame 310 to be located at a position away from the lower mold 200 to the upper mold 100, thereby better ensuring that one end of the lower mold 200 close to the upper mold 100 is completely exposed, and better realizing the improvement of the replacement efficiency of the Teflon tape at the lower mold 200, that is, better realizing the quick replacement of the Teflon at the lower mold 200. In addition, the top holding connecting piece 522 also has a certain buffering and blocking effect on the stroke of the driving cylinder, which reduces the impact on the driving cylinder during operation, thereby better ensuring the service life of the cylinder.

[0041] For reference Figure 5 and Figure 6 In one of the embodiments, the top holding connecting piece 522 comprises a connecting part 5221 and a first magnetic suction part 5222, one end of the connecting part 5221 is connected with the rack 400, and the first magnetic suction part 5222 is embedded in the other end of the connecting part 5221. Further, the magnetic suction piece 521 comprises a sleeving part 5211 and a second magnetic suction part 5212, the sleeving part 5211 is provided with a sleeving groove 501, one end of the first magnetic suction part 5222 embedded in the connecting part 5221 is located at the sleeving groove 501 and is detachably connected with the sleeving part 5211, and the second magnetic suction part 5212 is embedded in the groove bottom of the sleeving groove 501, and the first magnetic suction part 5222 is magnetically connected with the second magnetic suction part 5212. It can be understood that one end of the first magnetic suction part 5222 is embedded in the connecting part 5221, the second magnetic suction part 5212 is embedded in the groove bottom of the sleeving groove 501, and the first magnetic suction part 5222 is magnetically connected with the second magnetic suction part 5212, which better ensures that the top holding connecting part 5221 and the magnetic suction piece 521 have better connection stability when the driving cylinder drives the support frame 310 to move towards the lower mold 200, and one end of the connecting part 5221 embedded with the first magnetic suction part 5222 is located at the sleeving groove 501 and is detachably connected with the sleeving part 5211, which simply and quickly ensures the adjustment and transformation of the stroke of the driving cylinder driving the support frame 310 to be located at a position away from the lower mold 200 to the upper mold 100.

[0042] In one of the embodiments, the slot wall of the sleeving slot is provided with a taking and placing hole, the taking and placing hole is communicated with the sleeving slot, the connecting part is used to pass through the taking and placing hole and slide away from the taking and placing hole when the sleeving part is separated from the connecting part, that is, when the connecting part is taken out from the sleeving part, the connecting part is directly taken out from the taking and placing hole and the sleeving part in parallel by directly resisting the suction force of the first magnetic suction part and the second magnetic suction part, and the stroke of the driving cylinder is further simply and quickly ensured to be adjusted and changed to drive the support frame to be located at the position where the lower mold is away from the upper mold. It needs to be further explained that the first magnetic suction part and the second magnetic suction part are used in cooperation, the connecting part is better ensured not to be deflected under the action of the downward pressure and directly forced to separate from the sleeving slot at the taking and placing hole, the setting stability of the connecting part on the sleeving slot is better ensured, and the stability of the stroke of the driving cylinder to be adjusted and changed to drive the support frame to be located at the position where the lower mold is away from the upper mold is better ensured.

[0043] Please see Figure 4 and Figure 5 In one of the embodiments, the number of the magnetic suction type long stroke avoiding position assemblies 500 is two, and the two magnetic suction type long stroke avoiding position assemblies 500 are respectively arranged opposite to the two sides of the driving cylinder. It can be understood that the two magnetic suction type long stroke avoiding position assemblies 500 are respectively arranged opposite to the two sides of the driving cylinder, the stress uniformity of the support frame 310 on the two magnetic suction type long stroke avoiding position assemblies 500 is better achieved, and the effective adjustment control of the levelness of the support frame 310 is better ensured.

[0044] Please see Figures 4 to 6In one of the embodiments, the adjusting member 510 comprises a screwing part 511 and a balancing part 512, the screwing part 511 is screwed with the magnetic member 521, the balancing part 512 is connected to the end of the screwing part 511 away from the magnetic member 521, and the balancing part 512 abuts against the support frame 310 when the driving cylinder drives the support frame 310 to move away from the upper die 100. It can be understood that, by screwing the screwing part 511 with the magnetic member 521, the adjustment of the horizontal degree of the support frame is realized simply and quickly, and the adjustment and conversion of the stroke of the driving cylinder to drive the support frame 310 to the position away from the upper die 100 is realized simply and quickly. In addition, when the screwing part 511 has a large volume, the magnetic member 521 also needs to have a large volume, which makes it difficult for the worker to screw the screwing part 511 on the magnetic member 521. However, if the volume of the screwing part 511 is small to improve the convenience of screwing, the contact area between the screwing part 511 and the support frame 310 will be small, which will force the screwing part 511 to impact the support frame 310 with a large intensity, and thus the support frame 310 will be easily damaged, which will affect the processing quality and efficiency of the air bag side of the battery cell 20. Therefore, in the present application, the balancing part 512 is connected to the end of the screwing part 511 away from the magnetic member 521, and the balancing part 512 abuts against the support frame 310 when the driving cylinder drives the support frame 310 to move away from the upper die 100. That is, the balancing part 512 is directly used to support the support frame 310, which can ensure that the screwing part 511 and the magnetic member 521 have small volumes to improve the convenience of screwing for the worker, and thus the adjustment and conversion of the stroke of the driving cylinder to drive the support frame 310 to the position away from the upper die 100 is simple and convenient.

[0045] Please refer to Figures 1 to 3 In one of the embodiments, the rack 400 is provided with a guide member 600, the guide member 600 is located on the side of the support frame 310 close to the driving cylinder, and the guide member 600 is connected with the support frame 310 and is in sliding connection with the rack 400. It can be understood that, by connecting the guide member 600 with the rack 400 in sliding connection and connecting the guide member 600 with the support frame, the movement stability of the driving cylinder driving the support frame 310 and the carrier 320 to move back and forth in the direction close to or away from the upper die 100 is realized.

[0046] Please refer to Figures 1 to 3In one of the embodiments, the guide member 600 comprises at least two guide rod portions 610 and a cooperative portion 620, each of the guide rod portions 610 is located at one side of the support frame 310 close to the driving cylinder, and each of the guide rod portions 610 is connected with the support frame 310, the at least two guide rod portions 610 are oppositely arranged at two sides of the driving cylinder respectively, each of the guide rod portions 610 is penetrated through the rack 400 and is in sliding connection with the rack 400, and one end of each of the guide rod portions 610 away from the support frame 310 is connected with the cooperative portion 620. It can be understood that the at least two guide rod portions 610 are synchronously slid on the rack 400 through the cooperative portion 620, and the at least two guide rod portions 610 are oppositely arranged at two sides of the driving cylinder respectively, which preferably realizes the uniformity of the support of the support frame 310 by the guide rod portions 610, and further reduces the deflection of the support frame 310 on the guide rod portions 610, so that the guide member 600 more stably realizes the movement consistency of each region of the support frame 310.

[0047] Please refer to Figures 1 to 3 In one of the embodiments, the number of the guide rod portions 610 is four, and each two of the guide rod portions 610 are arranged at the same side of the driving cylinder. It can be understood that the guide member 600 more stably realizes the movement consistency of each region of the support frame 310.

[0048] Please refer to Figure 1 , Figure 2 and Figure 4 In one of the embodiments, the upper die 100 comprises an upper die driving cylinder 110, an upper die transmission seat 120 and an upper die head 130, the upper die driving cylinder 110 is installed on the rack 400, the upper die transmission seat 120 is in sliding connection with the rack 400, a power output end of the upper die driving cylinder 110 is connected with the upper die transmission seat 120, the upper die driving cylinder 110 drives the upper die transmission seat 120 to move towards or away from the lower die 200, and the upper die head 130 is installed on one side of the upper die transmission seat 120 close to the lower die 200, and the upper die head 130 abuts against the lower die 200 when the upper die transmission seat 120 is driven by the upper die driving cylinder 110 to move to the lower die 200 to be arranged adjacent to the lower die 200.

[0049] Please refer to Figure 1 , Figure 2 and Figure 4 In one of the embodiments, the rack 400 is provided with a driving guide rod 140, the driving guide rod 140 is penetrated through the rack 400, the driving guide rod 140 is provided with a driving guide hole 101, the extension direction of the driving guide hole 101 is the same as the length direction of the driving guide rod 140, the upper die transmission seat 120 is penetrated through the driving guide hole 101 and is in sliding connection with the driving guide rod 140, which preferably realizes the sliding stability of the upper die transmission seat 120 on the rack 400.

[0050] Please refer to Figure 1 , Figure 2 and Figure 4 In one of the embodiments, the power output end of the upper die driving cylinder 110 is arranged towards the direction away from the upper head 130. Further, the upper die transmission seat 120 comprises a bearing counter 121 connected to the power output end of the upper die driving cylinder 110 and a connecting rod 122 connected to the bearing counter 121 at the side close to the rack 400, the connecting rod 122 is arranged through the rack 400 and is in sliding connection with the rack 400, and the connecting rod 122 is connected with the upper head 130. It can be understood that the stability of the connection between the upper die driving cylinder 110 and the upper die transmission seat 120 is poor, but the stability and effectiveness of the movement of the upper die transmission seat 120 on the rack 400 can still be ensured, thereby facilitating the simplification of the magnetic type long-stroke avoidance carrier structure 10 for lithium battery heat sealing.

[0051] Please refer to Figure 1 , Figure 2 and Figure 4 In one of the embodiments, the lower die 200 comprises a lower die seat 210 connected with the rack 400 and a lower head 220 connected to the lower die seat 210 at the side close to the upper die 100, and the lower head 220 is used for abutting against the air bag side of the battery cell 20 when the battery cell 20 is arranged in the carrier groove 301, and the upper die 100 moves on the rack 400 towards the lower head 220 to abut against the lower head 220.

[0052] In one of the embodiments, the magnetic type long-stroke avoidance carrier structure for lithium battery heat sealing further comprises an air bag side limiting assembly. The air bag side limiting assembly comprises a fixing member and a limiting member, the fixing member is connected with the support frame, the limiting member is connected with the fixing member to form a sealing area, the lower die is located at the sealing area, one end of the limiting member close to the upper die is flush with one end of the carrier close to the upper die, and the limiting member is used for abutting against the air bag side of the battery cell when the battery cell is arranged in the carrier groove. It can be understood that the limiting member is fixedly arranged on the support frame through the fixing member, and the end surface of the limiting member and the carrier groove towards the upper die is flush, thereby the air bag side of the battery cell abuts against one side surface of the limiting member close to the upper die when the battery cell is placed in the carrier groove, that is, the limiting member plays a limiting supporting role on the air bag side of the battery cell, thereby the sealing precision of the air bag side of the battery cell can be better ensured, and when the electrolyte drops from the air bag side of the battery cell, the limiting member can better receive the electrolyte, thereby reducing the pollution of the magnetic type long-stroke avoidance carrier structure for lithium battery heat sealing.

[0053] In one of the embodiments, the lithium battery hot sealing magnetic suction type long-stroke avoidance carrier structure further comprises a first Teflon tape, a second Teflon tape and a third Teflon tape. The first Teflon tape is attached to the carrier groove and to the side of the carrier close to the lower die. The second Teflon tape is attached to the side of the lower head close to the upper head, and the second Teflon tape is attached to the adjacent four side surfaces of the side of the lower head close to the upper head. The third Teflon tape is attached to the side of the upper head close to the lower head, and the third Teflon tape is attached to the adjacent four side surfaces of the side of the upper head close to the lower head. It can be understood that the Teflon tape is fully covered on the upper die, the lower die and the carrier groove, thereby better ensuring the reduction of pollution of the lithium battery hot sealing magnetic suction type long-stroke avoidance carrier structure.

[0054] The application also provides a lithium battery hot sealing magnetic suction type long-stroke avoidance carrier device. The lithium battery hot sealing magnetic suction type long-stroke avoidance carrier device comprises a manipulator and the lithium battery hot sealing magnetic suction type long-stroke avoidance carrier structure of any one of the embodiments. The manipulator is used to grab the battery cell on the carrier groove. Further, the lithium battery hot sealing magnetic suction type long-stroke avoidance carrier device 10 comprises an upper die 100, a lower die 200, a carrier 300 and a lifting assembly 400A. The carrier 300 is used to place the battery cell 20. The upper die 100 and the lower die 200 are used to clamp the air bag edge of the battery cell when the upper die 100 and the lower die 200 are closed. The carrier 300 comprises a support frame 310 and a carrier 320. The carrier 320 is arranged adjacent to the lower die 200. The side of the carrier 320 close to the upper die 100 is provided with a carrier groove 301 for placing the battery cell 20. The carrier 320 is arranged on the support frame 310. The lifting assembly 400A is connected with the support frame 310. The lifting assembly 400A is used to drive the support frame 310 and the carrier 320 to move back and forth towards or away from the upper die 100.

[0055] The lithium battery hot sealing magnetic suction type long-stroke avoidance carrier device adopts the lithium battery hot sealing magnetic suction type long-stroke avoidance carrier structure, thereby better achieving the rapid replacement of Teflon at the lower die and the carrier groove, and effectively increasing the effective area of the Teflon tape attached to the lower die and the carrier, thereby better ensuring the efficiency and quality of the resealing of the battery cell by the lithium battery hot sealing magnetic suction type long-stroke avoidance carrier device.

[0056] In one of the embodiments, the lithium battery hot sealing magnetic suction type long-stroke avoidance carrier device comprises two lithium battery hot sealing magnetic suction type long-stroke avoidance carrier structures. The two lithium battery hot sealing magnetic suction type long-stroke avoidance carrier structures are arranged in the same direction and in sequence, thereby accelerating the resealing efficiency of the battery cell.

[0057] In one of the embodiments, the frame of the two lithium battery hot sealing magnetic suction type long-stroke avoidance carrier structures is an integral structure.

[0058] Compared with the prior art, the present application has at least the following advantages:

[0059] The magnetic long-stroke avoidance carrier structure 10 for the lithium battery heat sealing of the present application is connected with the lifting assembly 400A and the support frame 310, and the lifting assembly 400A is used to drive the support frame 310 and the carrier 320 to move towards or away from the upper mold 100, and the carrier 320 is arranged on the support frame 310, so that the battery cell 20 placed on the carrier groove 301 can increase the distance between the carrier 320 and the lower mold 200 through the lifting assembly 400A, so that the battery cell 20 on the carrier groove 301 can be relatively far away from the lower mold 200 without sealing, thereby reducing the influence of the temperature of the lower mold 200 on the temperature of the battery cell 20 on the carrier groove 301, thereby reducing the overflow problem of the battery cell 20, and reducing the mutual interference of the lower mold 200 and the carrier groove 301 when the Teflon tape is attached, thereby better realizing the rapid replacement of Teflon on the lower mold 200 and the carrier groove 301, and effectively realizing the increase of the effective area of the Teflon tape attached on the lower mold 200 and the carrier 300, thereby better ensuring the sealing efficiency and quality of the battery cell 20.

[0060] The above-described embodiments only express several embodiments of the present application, which are described in detail and specifically, but should not be understood as a limitation on the scope of the patent. It should be noted that for ordinary skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are within the scope of the present application. Therefore, the scope of the patent of the present application should be subject to the appended claims.

Claims

1. A magnetic long-stroke avoidance carrier structure for thermal crimping of lithium batteries, comprising an upper die, a lower die, and a carrier for placing a battery cell, the upper die and the lower die being used to clamp the air bag edge of the battery cell when the upper die and the lower die are closed, characterized in that, Further comprising a lifting assembly; A rack, the upper die and the lower die are oppositely arranged on the rack, and the upper die is in sliding connection with the rack; The carrier is adjacent to the lower die, and a loading groove is formed on one side of the carrier close to the upper die, the loading groove is used for placing the battery cell, and the carrier is arranged on the support frame; A driving cylinder is located on the side of the support frame away from the upper die, and the driving cylinder is arranged on the rack, the power output end of the driving cylinder is connected with the support frame, and the driving cylinder is used for driving the support frame and the carrier to move back and forth towards or away from the upper die; The magnetic long-stroke position-avoiding assembly comprises an adjusting piece and a magnetic top-holding piece, one end of the magnetic top-holding piece is connected with the rack, the other end of the magnetic top-holding piece is movably connected with the adjusting piece, the adjusting piece moves on the magnetic top-holding piece towards or away from the support frame, the adjusting piece abuts against the support frame when the driving cylinder drives the support frame to move away from the upper die, and the distance between the magnetic top-holding piece and the upper die is greater than the distance between the lower die and the upper die.

2. The magnetic long-stroke avoidance carrier structure for lithium battery heat seaming according to claim 1, wherein The magnetic top-holding piece comprises a magnetic piece and a top-holding connecting piece, one end of the magnetic piece is movably connected with the adjusting piece, and the other end of the magnetic piece is detachably connected with one end of the top-holding connecting piece.

3. The magnetic long-stroke position-avoiding carrier structure for thermal crimping of lithium batteries according to claim 2, characterized in that, The top-holding connecting piece comprises a connecting part and a first magnetic part, one end of the connecting part is connected with the rack, and the first magnetic part is embedded in the other end of the connecting part; The magnetic piece comprises a sleeving part and a second magnetic part, a sleeving groove is formed in the sleeving part, one end of the connecting part in which the first magnetic part is embedded is located at the sleeving groove and is detachably connected with the sleeving part, and the second magnetic part is embedded in the bottom of the sleeving groove, and the first magnetic part is magnetically connected with the second magnetic part.

4. The magnetic long-stroke position-avoiding carrier structure for thermal crimping of lithium batteries according to claim 3, characterized in that, A taking and placing hole is formed in the groove wall of the sleeving groove, the taking and placing hole communicates with the sleeving groove, and the connecting part passes through the taking and placing hole and slides out of the taking and placing hole when the sleeving part is separated from the connecting part.

5. The magnetic long-stroke position-avoiding carrier structure for thermal crimping of lithium batteries according to claim 1, characterized in that, The number of the magnetic long-stroke position-avoiding assemblies is two, and the two magnetic long-stroke position-avoiding assemblies are oppositely arranged on the two sides of the driving cylinder.

6. The magnetic long-stroke position-avoiding carrier structure for thermal crimping of lithium batteries according to claim 1, characterized in that, A guide piece is arranged on the rack, the guide piece is located on the side of the support frame close to the driving cylinder, the guide piece is connected with the support frame, and the guide piece is in sliding connection with the rack.

7. A magnetic long-stroke avoidance carrier device for heat sealing of lithium batteries, characterized by The mechanical hand is used for grabbing the battery cell on the loading groove.

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