Vacuum packaging device and battery cell manufacturing system

Abstract

The present application provides a vacuum packaging device and a battery cell manufacturing system. The vacuum packaging device includes a mounting frame, a shell, a cover plate, a first lifting assembly, a piercing mechanism, an auxiliary pressure plate assembly and a vacuum assembly. The shell is arranged on the mounting frame, and the shell is provided with a first connecting hole; the cover plate is arranged on the shell, and a receiving cavity is formed between the cover plate and the shell, and the cover plate is provided with a mounting hole, and the first connecting hole and the mounting hole are both connected to the receiving cavity; the first lifting assembly is arranged on the mounting frame, and the power output end of the first lifting assembly is connected to the cover plate, and the first lifting assembly drives the cover plate to move relative to the shell; the piercing mechanism includes a pushing assembly, a knife holder assembly and a bearing plate; the pushing assembly is arranged on the cover plate; the bayonet is accurately inserted into the guide slot under the guidance of the avoidance groove, so that the bayonet can accurately pierce the battery cell, avoiding the problem that the vacuum packaging device is easy to pierce the battery cell during the piercing process, which is conducive to improving the accuracy of the bayonet piercing the battery cell.

Description

Technical Field

[0001] The present invention relates to the technical field of battery cell manufacturing, and in particular to a vacuum packaging device and a battery cell manufacturing system. Background Art

[0002] The cell processing procedures include initial positioning, vacuum packaging, cutting, ironing, trimming, bending and ironing. Since the cell contains toxic and harmful substances, the lithium battery needs to be packaged after the injection process is completed. After the electrolyte is injected and left to stand, the excess electrolyte that is not absorbed by the cell and the gas generated during the production process need to be extracted first, and then the aluminum plastic film is heated and pressurized in a vacuum environment to achieve vacuum packaging of the cell to prevent the lithium battery from leaking when it is put on the market. Among them, the vacuum packaging process, as a key process in the cell processing process, determines whether the yield of the cell manufacturing meets the standard. The working process of the vacuum packaging device corresponding to the vacuum packaging process is: first puncture the cell, then extract the excess electrolyte and the gas generated during the production process, that is, perform a vacuum operation, and finally heat-seal the cell in a vacuum environment. However, the traditional vacuum packaging device is easy to puncture the cell during the puncture process, and the accuracy of the cell puncture is low. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a vacuum packaging device and a battery cell manufacturing system that solve the above technical problems.

[0004] The objective of the present invention is achieved through the following technical solutions:

[0005] A vacuum packaging device comprises: a mounting frame; a shell, the shell is arranged on the mounting frame, and the shell is provided with a first connecting hole; a cover plate, the cover plate is arranged on the shell, and a receiving cavity is formed between the cover plate and the shell, the cover plate is provided with a mounting hole, and the first connecting hole and the mounting hole are both connected to the receiving cavity; a first lifting component, the first lifting component is arranged on the mounting frame, and the power output end of the first lifting component is connected to the cover plate, and the first lifting component drives the cover plate to move up and down relative to the shell; a puncturing mechanism, the puncturing mechanism comprises a pushing component, a knife holder component and a carrying plate; the pushing component is arranged on the cover plate, and the pushing component is partially located in the receiving cavity The knife holder assembly is located in the accommodating cavity, and the knife holder assembly is connected to the power output end of the pushing assembly; the supporting plate is arranged in the accommodating cavity, and the supporting plate is used to support the battery cell; the knife holder assembly includes a bayonet, and the bayonet is used to pierce the battery cell on the supporting plate; a guide slot is provided on the supporting plate; an auxiliary pressure plate assembly, the auxiliary pressure plate assembly is slidably arranged on the cover plate, the auxiliary pressure plate assembly is arranged corresponding to the supporting plate, and the auxiliary pressure plate assembly is provided with a avoidance groove for guiding the bayonet to pierce the battery cell, and the avoidance groove is correspondingly connected to the guide slot; a vacuum assembly, the vacuum assembly is connected to the first connecting hole, and the vacuum assembly is used to vacuum the accommodating cavity.

[0006] A battery cell manufacturing system comprises a frame, a conveying device arranged on the frame and a vacuum packaging device as described in any of the above embodiments, wherein the mounting frame is arranged on the frame, and the conveying device is used to take out or place the battery cell on the carrier plate.

[0007] Compared with the prior art, the present invention has at least the following advantages:

[0008] 1. Since the first lifting assembly drives the cover plate to move up and down relative to the shell, the tightness of the cover plate and the housing cavity surrounded by the shell is ensured when the vacuum assembly is vacuuming, so that the vacuum assembly can better vacuum the housing cavity, and the cover plate can leave the shell after the vacuum packaging process of the battery cell is completed to take out the packaged battery cell; 2. When the bayonet of the piercing mechanism pierces the battery cell, the bayonet is inserted into the guide slot, and the excess electrolyte that is not absorbed by the battery cell flows out to the carrier plate, and flows from the guide slot of the carrier plate to the housing cavity. At the same time, the vacuum assembly is used to vacuum the housing cavity, so that the vacuum is drawn. The component evacuates the accommodating cavity through the first connecting hole, and at the same time extracts the gas generated during the static state of the battery cell; 3. Since the auxiliary pressure plate assembly is slidably arranged on the cover plate, the auxiliary pressure plate assembly abuts against and presses the battery cell when the bayonet punctures the battery cell on the carrier plate, thereby avoiding the problem of the battery cell being deviated due to the movement of the carrier plate during the puncturing process, and the bayonet is accurately inserted into the guide slot under the guidance of the avoidance groove, so that the bayonet can accurately puncture the battery cell, avoiding the problem of the vacuum packaging device easily puncturing the battery cell during the puncturing process, which is beneficial to improving the accuracy of the bayonet puncturing the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0010] Figure 1 is a schematic diagram of a battery cell manufacturing system in one embodiment; Figure 2 for Figure 1 A partial schematic diagram of a battery cell manufacturing system is shown; Figure 3 for Figure 1 A partial schematic diagram of a vacuum packaging device of a battery cell manufacturing system from another perspective; Figure 4 for Figure 3 A partial schematic diagram of the vacuum packaging device shown; Figure 5 for Figure 3 A partial schematic diagram of the vacuum packaging device from another perspective; Figure 6 for Figure 5 A partial schematic diagram of the vacuum packaging device shown; Figure 7 for Figure 6 A partial schematic diagram of a heat sealing assembly of the vacuum packaging device shown; Figure 8 for Figure 3 Another partial schematic diagram of the battery cell manufacturing system shown; Fig. 9 for Figure 8 A partial schematic diagram of a battery cell manufacturing system is shown; Fig.10 for Figure 1A partial schematic diagram of another perspective of the battery cell manufacturing system shown; Fig.11 for Figure 1 A partial schematic diagram of a battery cell manufacturing system is shown; Fig.12 for Figure 1 Another partial schematic diagram of the battery cell manufacturing system shown; Fig.13 for Figure 1 Another partial schematic diagram of the battery cell manufacturing system shown; Fig.14 for Fig.13 A partial schematic diagram of the battery cell manufacturing system shown. DETAILED DESCRIPTION

[0011] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood. It should be noted that when an element is referred to as "fixed to" another element, it can be directly on another element or there can also be a central element. When an element is considered to be "connected" to another element, it can be directly connected to another element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for illustrative purposes and are not intended to be the only implementation method. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by technicians in the technical field of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific implementation methods and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0012] like Figure 1 and Figure 2 As shown, a battery cell manufacturing system 10 of an embodiment includes a frame 100, a conveying device 200 disposed on the frame 100, and a vacuum packaging device 300. Figure 3 The vacuum packaging device 300 includes a mounting frame 310 and a vacuum packaging mechanism 320. The vacuum packaging mechanism 320 includes a housing 322, a cover plate 323, a first lifting assembly 324, a piercing mechanism 326, an auxiliary pressing plate assembly 327, and a vacuum assembly (not shown). The mounting frame 310 is disposed on the frame 100, and the conveying device 200 is used to take out or place the battery cell on the carrier plate 326c. Figure 3 and Figure 4As shown, in this embodiment, the shell 322 is arranged on the mounting frame 310, and the shell 322 is provided with a first connecting hole 322a. The cover plate 323 is covered on the shell 322, and a receiving chamber 323a is formed between the cover plate 323 and the shell 322. The cover plate 323 is provided with a mounting hole (not shown in the figure), and the first connecting hole 322a and the mounting hole are both connected to the receiving chamber 323a. The first lifting component 324 is arranged on the mounting frame 310, and the power output end of the first lifting component 324 is connected to the cover plate 323, so that the first lifting component 324 drives the cover plate 323 to move relative to the shell 322, ensuring that the cover plate 323 is pressed tightly against the shell 322, thereby improving the tightness of the receiving chamber 323a surrounded by the cover plate 323 and the shell 322.

[0013] like Figure 4 As shown, the puncture mechanism 326 is at least partially located in the accommodating cavity 323a, and the puncture mechanism 326 is used to puncture the battery core to discharge the excess electrolyte that is not absorbed by the battery core. Figure 5 and Figure 6 Specifically, the piercing mechanism 326 includes a pushing component 326a, a knife holder component 326b and a carrying plate 326c. The pushing component 326a is arranged on the cover plate 323, and the pushing component 326a is partially located in the accommodating chamber 323a. The knife holder component 326b is located in the accommodating chamber 323a, and the knife holder component 326b is connected to the power output end of the pushing component 326a, so that the pushing component 326a drives the bayonet 3262 to move in the direction of approaching or moving away from the battery cell, thereby piercing the battery cell. In this embodiment, the carrying plate 326c is arranged in the accommodating chamber 323a, and is used to support the battery cell. The pushing component 326a is a cylinder component. In other embodiments, the pushing component 326a can also be an electric cylinder component or a liquid cylinder component. A guide slot 3264 is provided on the carrying plate 326c. Further, the knife holder component 326b includes a bayonet 3262, and the bayonet 3262 is used to pierce the battery cell on the carrying plate 326c. The auxiliary pressing plate assembly 327 is slidably disposed on the cover plate 323, and the auxiliary pressing plate assembly 327 is disposed correspondingly to the carrier plate 326c. The auxiliary pressing plate assembly 327 is provided with a avoidance groove 327a for guiding the bayonet 3262 to pierce the battery cell, and the avoidance groove 327a is correspondingly provided with the guide slot 3264, and the avoidance groove 327a is correspondingly connected with the guide slot 3264, so that the auxiliary pressing plate assembly 327 abuts against and presses the battery cell when the bayonet 3262 pierces the battery cell on the carrier plate 326c, thereby avoiding the problem that the battery cell is pierced deviated due to the movement of the battery cell relative to the carrier plate 326c during the piercing process, and is conducive to improving the accuracy of the bayonet 3262 piercing the battery cell. The vacuum assembly is connected with the first connecting hole 322a, and the vacuum assembly is used to evacuate the accommodating chamber 323a.

[0014] The above-mentioned vacuum packaging device 300 and battery cell manufacturing system 10, because the first lifting component 324 drives the cover plate 323 to lift and lower relative to the shell 322, ensures the tightness of the cover plate 323 and the housing chamber 323a surrounded by the shell 322 when the vacuum component is evacuated, so that the vacuum component can better evacuate the housing chamber 323a, and the cover plate 323 can leave the shell 322 after the vacuum packaging process of the battery cell is completed to take out the packaged battery cell; when the bayonet 3262 of the piercing mechanism 326 pierces the battery cell, the bayonet 3262 is inserted into the guide slot 3264, and the excess electrolyte not absorbed by the battery cell flows out to the carrier plate 326c, and flows from the guide slot 3264 of the carrier plate 326c to the housing chamber 323a, and at the same time, the vacuum component is used to The accommodating chamber 323a is evacuated, so that the vacuum extraction component evacuates the accommodating chamber 323a through the first connecting hole 322a, and at the same time, the gas generated during the static state of the battery cell is extracted; since the auxiliary pressure plate assembly 327 is slidably arranged on the cover plate 323, the auxiliary pressure plate assembly 327 is abutted and pressed against the battery cell when the bayonet 3262 is in operation of puncturing the battery cell on the supporting plate 326c, thereby avoiding the problem that the battery cell is punctured relative to the supporting plate 326c during the puncturing process, and the bayonet 3262 is accurately inserted into the guide slot 3264 under the guidance of the avoidance groove 327a, so that the bayonet 3262 can accurately puncture the battery cell, thereby avoiding the problem that the vacuum packaging device 300 is easy to puncture the battery cell during the puncturing process, which is beneficial to improving the accuracy of the bayonet 3262 in puncturing the battery cell.

[0015] like Figure 6As shown, further, a partition rib 3222 is provided on the inner wall of the shell 322, and the partition rib 3222 divides the accommodating chamber 323a into a first accommodating groove 3231 and a second accommodating groove 3233. The partition rib 3222 supports the carrier plate 326c, so that the carrier plate 326c is better arranged in the accommodating chamber 323a, and the structural strength of the shell 322 is improved. The first accommodating groove 3231 corresponds to the carrier plate 326c, and the first accommodating groove 3231 is connected to the guide slot 3264. The heat sealing component 330 is partially located in the second accommodating groove 3233, and the first connecting hole 322a is connected to the second accommodating groove 3233. When the bayonet 3262 pierces the battery cell, the excess electrolyte flowing out of the battery cell flows into the first accommodating groove 3231 through the guide slot 3264, so as to prevent the electrolyte from flowing into the second accommodating groove 3233 to affect the heat sealing operation of the heat sealing component 330 and the vacuuming operation of the vacuuming component. Furthermore, the vacuum packaging device 300 further includes a waste liquid recovery component (not shown), the housing 322 further has a drainage hole 322b connected to the first receiving tank 3231, the waste liquid recovery component is connected to the drainage hole 322b, and the waste liquid recovery component is used to extract and recover the waste liquid to prevent the electrolyte stored in the first receiving tank 3231 from overflowing, so that the vacuum packaging device 300 can continue to perform vacuum packaging operations on batches of battery cells. In this embodiment, the waste liquid recovery component includes a recovery pump and a liquid extraction pipeline, and the recovery pump is connected to the drainage hole 322b through the liquid extraction pipeline, so that the recovery pump can extract and recover the waste liquid in the first receiving tank 3231. Further, the bottom of the first receiving tank 3231 is provided with an inclined surface 3232, and the inclined surface 3232 extends to a position adjacent to the drainage hole 322b, which is conducive to the waste liquid being guided to quickly flow out of the first receiving tank 3231 through the inclined surface 3232, thereby achieving a rapid drainage effect. In the present embodiment, the number of the inclined surfaces 3232 is two, and the two inclined surfaces 3232 are inclined in directions away from each other. The number of the drainage holes 322b is two, and the two drainage holes 322b are arranged in a one-to-one correspondence with the inclination directions of the two inclined surfaces 3232, so that the waste liquid in the first accommodating tank 3231 can be quickly discharged through the two drainage holes 322b, respectively, further improving the discharge efficiency of the waste liquid. The waste liquid recovery assembly is connected to the two drainage holes 322b, respectively. In the present embodiment, the angle between the two inclined surfaces 3232 is 120 degrees to 150 degrees, so that the waste liquid in the first accommodating tank 3231 has a better drainage effect. Specifically, the angle between the two inclined surfaces 3232 is 140 degrees.

[0016] See again Figure 4In one embodiment, a guide groove 3265 is provided on one side of the carrier plate 326c adjacent to the auxiliary pressure plate assembly 327, and the guide groove 3265 is connected to the guide slot 3264, so that the waste liquid flowing onto the carrier plate 326c after the battery cell is punctured can quickly flow into the guide slot 3264 through the guide groove 3265, and then the waste liquid is quickly collected in the first accommodating groove 3231 and discharged from the drain hole 322b. In this embodiment, the extension direction of the guide groove 3265 is perpendicular to the extension direction of the guide slot 3264, so that the waste liquid can quickly flow into the guide slot 3264 through the guide groove 3265. Furthermore, the extension direction of the guide groove 3265 is perpendicular to the extension direction of the guide slot 3264, so that the waste liquid can be more quickly drained into the guide slot 3264 through the guide groove 3265. Specifically, there are multiple guide grooves 3265, which are arranged side by side, which is conducive to the rapid flow of waste liquid into the guide slot 3264, thereby improving the collection efficiency of waste liquid. Further, the carrier plate 326c is provided with a positioning groove 3261, which is connected to the guide slot 3264 and the guide groove 3265 respectively. The positioning groove 3261 is used to position the battery cell to prevent the battery cell from sliding relative to the carrier plate 326c during the positioning and pressing process, so that the auxiliary pressure plate assembly 327 can better press and position the battery cell on the carrier plate 326c.

[0017] like Figure 4 and Figure 6As shown, further, the auxiliary platen assembly 327 includes a sleeve 3271, a sliding rod 3273 and an auxiliary platen body 3275, the cover plate 323 is provided with a positioning groove 323c, the sleeve 3271 is located in the positioning groove and connected to the cover plate 323, and the sleeve 3271 is sleeved on the sliding rod 3273 and slidably connected to the sliding rod 3273, the auxiliary platen body 3275 is correspondingly arranged with the carrier plate 326c, the auxiliary platen body 3275 is connected with the sliding rod 3273, and the auxiliary platen body 3275 is located on the side of the cover plate 323 adjacent to the housing 322, so that the auxiliary platen body 3275 can effectively abut and press against the battery cell when the bayonet 3262 is relative to the battery cell on the carrier plate 326c. The avoidance groove 327a is provided in the auxiliary platen body 3275. The avoidance groove 327a is provided in the auxiliary platen body 3275. Further, the knife holder assembly 326b also includes a knife holder body 3266, and the bayonet 3262 is arranged on the knife holder body 3266, and the knife holder body 3266 is connected to the power output end of the pushing assembly 326a, so that the bayonet 3262 is connected to the power output end of the pushing assembly 326a through the knife holder body 3266, and then the bayonet 3262 is connected to the power output end of the pushing assembly 326a. In this embodiment, the number of bayonets 3262 and guide slots 3264 is multiple, and multiple bayonets 3262 are arranged in a one-to-one correspondence with multiple guide slots 3264. Multiple bayonets 3262 are arranged side by side on the knife holder body 3266, so that the knife holder assembly 326b can perform puncture operations on multiple battery cells at the same time, thereby improving the puncture efficiency of the battery cells.

[0018] like Figure 3 and Figure 5 As shown, in one embodiment, the vacuum packaging mechanism 320 further includes a heat sealing component 330, which is located in the accommodating cavity 323a and is used to heat seal the battery cell. The piercing mechanism 326 is disposed adjacent to the heat sealing component 330, which is used to heat seal the battery cell. The heat sealing component 330 is provided with a vacuum hole 331 connected to the accommodating cavity 323a, and the vacuum hole 331 is connected to the accommodating cavity 323a and the first connecting hole 322a respectively. Figure 4As shown, further, the heat sealing assembly 330 is provided with a vacuum hole 331 connected to the accommodating chamber 323a, and the vacuum hole 331 is respectively connected to the accommodating chamber 323a and the first connecting hole 322a. The vacuum assembly is connected to the first connecting hole 322a, and the vacuum assembly is used to vacuum the accommodating chamber 323a, so that the vacuum assembly vacuums the accommodating chamber 323a through the first connecting hole 322a, and at the same time, the gas generated during the static state of the battery cell is extracted, so that the heat sealing assembly 330 heats and pressurizes the aluminum-plastic film under a vacuum environment to achieve vacuum packaging of the battery cell. In this embodiment, the puncture mechanism 326 is arranged adjacent to the heat sealing assembly 330. In one embodiment, the first connecting hole 322a is arranged corresponding to the vacuum hole 331, which is conducive to quickly vacuuming the vacuum hole 331. It can be understood that in other embodiments, the first connecting hole 322a and the vacuum hole 331 can also be staggered.

[0019] The working process of the vacuum packaging device 300 is as follows: first, the first lifting component 324 drives the cover plate 323 to move up and down relative to the shell 322 to ensure that the cover plate 323 is pressed tightly against the shell 322; then the piercing mechanism 326 pierces the battery cell to discharge the excess electrolyte that has not been absorbed by the battery cell; then the vacuum component performs a vacuum operation on the accommodating cavity 323a through the first connecting hole 322a; finally, the heat sealing component 330 heat seals the battery cell to heat and pressurize the aluminum-plastic film in a vacuum environment, thereby realizing vacuum packaging of the battery cell.

[0020] like Figure 4 As shown, further, the heat sealing assembly 330 includes a first drive assembly 332, a first heat sealing head 334 and a second heat sealing head 336. The first drive assembly 332 is fixed to the side of the cover plate 323 away from the shell 322. The cover plate 323 is provided with a first through hole, and the first drive assembly 332 is connected to the first heat sealing head 334 through the first through hole. The first heat sealing head 334 and the second heat sealing head 336 are arranged correspondingly, and the first heat sealing head 334 and the second heat sealing head 336 jointly heat seal the battery cell, so that the first drive assembly 332 drives the first heat sealing head 334 to move corresponding to the second heat sealing head 336, and then the first heat sealing head 334 and the second heat sealing head 336 act on the battery cell at the same time to achieve heat sealing of the battery cell. In this embodiment, the first drive assembly 332 is a cylinder assembly, and the first drive assembly 332 drives the first heat sealing head 334 to move closer to or away from the second heat sealing head 336. In other embodiments, the first drive assembly 332 can also be an electric cylinder or a liquid cylinder assembly.

[0021] like Figure 7As shown, further, the vacuum hole 331 includes a first vacuum hole 331a, a first air extraction branch hole 331b, a second vacuum hole 331c and a second air extraction branch hole 331d. The first vacuum hole 331a and the first air extraction branch hole 331b are both provided in the first heat sealing head 334, and the first vacuum hole 331a is connected with the first air extraction branch hole 331b, which is conducive to the vacuum component to quickly vacuum the space area adjacent to the first heat sealing head 334 through the first vacuum hole 331a. The second vacuum hole 331c and the second air extraction branch hole 331d are both provided in the second heat sealing head 336, and the second vacuum hole 331c is connected with the second air extraction branch hole 331d, which is conducive to the vacuum component to quickly vacuum the space area adjacent to the second heat sealing head 336 through the second vacuum hole 331. Furthermore, the first vacuum hole 331a extends along the axial direction of the first heat sealing head 334, the first air extraction branch hole 331b is connected to the first vacuum hole 331a, and the first air extraction branch hole 331b runs through the first heat sealing head 334, which is conducive to the vacuum assembly to quickly vacuum the surrounding of the battery cell when the first heat sealing head 334 abuts against the heat-sealed battery cell. Specifically, the extension direction of the first air extraction branch hole 331b is perpendicular to the extension direction of the first vacuum hole 331a. There are multiple first air extraction branch holes 331b, and the multiple first air extraction branch holes 331b are distributed at intervals and are all connected to the first vacuum hole 331a. Furthermore, the second vacuum hole 331c extends along the axial direction of the second heat sealing head 336, the second air extraction branch hole 331d is connected to the second vacuum hole 331c, and the second air extraction branch hole 331d runs through the second heat sealing head 336, which is conducive to the vacuum assembly to quickly vacuum the surroundings of the battery cell when the second heat sealing head 336 abuts against the heat-sealed battery cell. Specifically, the extension direction of the second air extraction branch hole 331d is perpendicular to the extension direction of the second vacuum hole 331c. There are multiple second air extraction branch holes 331d, and the multiple second air extraction branch holes 331d are distributed at intervals and are all connected to the second vacuum hole 331c.

[0022] like Figure 5As shown, further, the first heat sealing head 334 includes a heat sealing head body 334a and a placement seat 334b ​​connected to each other, and the first vacuum hole 331a and the first air extraction hole 331b are both opened in the heat sealing head body 334a. The placement seat 334b ​​is connected to the power output end of the first driving component 332, and the heat sealing head body 334a is arranged on the side of the placement seat 334b ​​adjacent to the second heat sealing head 336, so that the first heat sealing head 334 is connected to the power output end of the first driving component 332, and the first heat sealing head 334 is arranged opposite to the second heat sealing head 336, so that the first driving component 332 drives the first heat sealing head 334 to move relative to the second heat sealing head 336. In order to make the first heat sealing head 334 move along the power output direction of the first driving assembly 332, the first heat sealing head 334 further includes an auxiliary guide rod 334c, the cover plate 323 is provided with a guide hole, the auxiliary guide rod 334c is located in the guide hole and is slidably connected to the cover plate 323, and the extension direction of the auxiliary guide rod 334c is parallel to the power output direction of the first driving assembly 332, so that the first heat sealing head 334 moves accurately along the power output direction of the first driving assembly 332, thereby improving the accuracy of the movement of the first heat sealing head 334 relative to the cover plate 323, thereby improving the heat sealing accuracy of the battery cell. In this embodiment, the number of the auxiliary guide rods 334c and the guide holes are both two, each auxiliary guide rod 334c is located in the corresponding guide hole, and the two auxiliary guide rods 334c are respectively located on both sides of the first driving assembly 332, which can better guide the first heat sealing head 334 to move along the power output direction of the first driving assembly 332.

[0023] However, the heat of the heat sealing head body 334a is directly transferred to the placement seat 334b ​​and the cover plate 323 in sequence, causing the vacuum packaging device 300 to overheat. Furthermore, a plurality of air guide grooves 3342 are provided at the connection between the placement seat 334b ​​and the heat sealing head body 334a, and the plurality of air guide grooves 3342 are arranged side by side. When the vacuum assembly is working, the accommodating cavity 323a is vacuumed, so that the air in the accommodating cavity 323a flows in the plurality of air guide grooves 3342 to dissipate the heat of the placement seat 334b, so that the heat of the heat sealing head body 334a is not easily transferred to the placement seat 334b, thereby improving the heat dissipation rate of the placement seat 334b ​​and avoiding the problem of overheating of the vacuum packaging device 300.

[0024] like Figure 3 As shown, in one embodiment, the vacuum packaging mechanism 320 further includes a fixing seat 321. The mounting frame 310 is connected to the frame 100, and the fixing seat 321 is connected to a side of the mounting frame 310 that is away from the frame 100, so that the fixing seat 321 is connected to the frame 100 through the mounting frame 310. The housing 322 is disposed on the fixing seat 321, so that the housing is connected to the mounting frame through the fixing seat. Figure 5 and Figure 6As shown, further, the vacuum packaging mechanism 320 also includes a clamping mechanism 328, and the clamping mechanism 328 includes a telescopic driving member 328a, a clamping assembly 328b and a support plate assembly 328c. The telescopic driving member 328a is arranged on the cover plate 323, and the power output end of the telescopic driving member 328a is connected to the clamping assembly 328b to drive the clamping assembly 328b to move in a direction close to or away from the support plate assembly 328c. The clamping assembly 328b and the support plate assembly 328c are both located in the second accommodating groove 3233, and the clamping assembly 328b is arranged opposite to the support plate assembly 328c, and the support plate assembly 328c is arranged adjacent to the heat sealing assembly 330, and the support plate assembly 328c is used to support the battery cell. In this embodiment, the telescopic drive member 328a includes a telescopic cylinder 3282 and a fixing plate 3284. The telescopic cylinder 3282 is mounted on the cover plate 323. The cover plate 323 is provided with a second through hole (not shown) communicating with the accommodating chamber 323a. The power output end of the telescopic cylinder 3282 is passed through the second through hole and connected to the clamping assembly 328b, so that the telescopic cylinder 3282 drives the clamping assembly 328b to move through the fixing plate 3284. It can be understood that in other embodiments, the telescopic drive assembly is not limited to a cylinder drive assembly, but can also be a motor drive assembly.

[0025] like Figure 5 and Figure 6As shown, further, the pressing assembly 328b includes a guide column 3283 and a pressing plate 3285, the guide column 3283 is slidably disposed on the fixed plate 3284, and the guide column 3283 is connected to the pressing plate 3285. The pressing plate 3285 is connected to the guide column 3283, and the pressing plate 3285 is correspondingly disposed to the support plate assembly 328c, so that the pressing plate 3285 presses the battery cell against the support plate assembly 328c, and under the guiding action of the guide column 3283, the pressing plate 3285 abuts against the support plate assembly 328c with high precision, so that the battery cell is better positioned on the support plate assembly 328c. In addition, when the pressing plate 3285 moves with the fixed plate 3284 relative to the support plate assembly 328c to a position abutting against the battery cell, the pressing plate 3285 slides with the guide column 3283 relative to the fixed plate 3284, avoiding the problem that the pressing plate 3285 rigidly abuts against the battery cell and crushes the battery cell. In other words, the sliding arrangement of the guide column 3283 relative to the pressing plate 3285 enables the pressing plate 3285 to have a better buffering effect. Further, the mounting frame 310 is rotatably connected to the frame 100. The vacuum packaging device 300 also includes a rotary drive mechanism (not shown), which is mounted on the frame 100, and the power output end of the rotary drive mechanism is connected to the mounting frame 310, so that the rotary drive mechanism drives the mounting frame 310 to rotate relative to the frame 100, thereby enabling the mounting frame 310 to periodically rotate to a position adjacent to the conveying device 200. In this embodiment, there are multiple vacuum packaging mechanisms 320, and the multiple vacuum packaging mechanisms 320 are distributed at intervals along the circumference of the mounting frame 310. Since each vacuum packaging mechanism 320 can vacuum package multiple battery cells, the efficiency of the vacuum packaging device 300 in vacuum packaging the battery cells is improved. When the rotary drive mechanism drives the mounting frame 310 to rotate, one of the vacuum packaging mechanisms 320 rotates to a position corresponding to the first sliding seat 220, and the pick-and-place mechanism 240 located between the loading position of the battery cell and the vacuum packaging device 300 just moves to a position corresponding to the vacuum packaging mechanism 320, and places the battery cell to be vacuum packaged in the receiving groove in the vacuum packaging mechanism 320, and then performs a vacuum packaging operation on the battery cell. At the same time, the pick-and-place mechanism 240 located between the vacuum packaging placement and the cutting mechanism 400 places the vacuum-packaged battery cell on the cutting mechanism 400, and at the same time, the pick-and-place mechanism 240 located between the cutting mechanism 400 and the fine sealing mechanism 500 places the battery cell on the fine sealing mechanism 500, and at the same time, the pick-and-place mechanism 240 located between the fine sealing mechanism 500 and the voltage measuring mechanism 600 places the battery cell on the voltage measuring mechanism 600, and at the same time, the pick-and-place mechanism 240 located between the voltage measuring mechanism 600 and the positioning mechanism 700 places the battery cell on the positioning mechanism 700.

[0026] In order to improve the packaging efficiency of the vacuum packaging device 300 for the battery cells, and to cleverly utilize the time difference between the reciprocating motion of the pick-and-place mechanism 240 located between the vacuum packaging placement and the cutting mechanism 400 and the rotation time difference of the mounting frame 310 to achieve seamless docking, further, the time for each vacuum packaging mechanism 320 to rotate one circle with the mounting frame 310 is equal to the time for the vacuum packaging mechanism 320 to vacuum package the battery cells. In this embodiment, the time for each vacuum packaging mechanism 320 to rotate one circle with the mounting frame 310 is equal to twice the sum of the reciprocating motion time of the pick-and-place mechanism 240 located between the vacuum packaging placement and the cutting mechanism 400. Similarly, when the pick-and-place mechanism 240 located between the vacuum packaging placement and the cutting mechanism 400 picks up the battery cell at the loading position, the pick-and-place mechanism 240 located between the vacuum packaging placement and the cutting mechanism 400 takes out the battery cell from the vacuum packaging mechanism 320 of the vacuum packaging placement, and the pick-and-place mechanism 240 located between the cutting mechanism 400 and the fine sealing mechanism 500 takes out the battery cell from the picking mechanism, and the pick-and-place mechanism 240 located between the fine sealing mechanism 500 and the voltage measuring mechanism 600 takes the battery cell out of the fine sealing mechanism 500, and the pick-and-place mechanism 240 located between the voltage measuring mechanism 600 and the positioning mechanism 700 takes the battery cell out of the voltage measuring mechanism 600. This not only improves the packaging efficiency of the battery cell by the vacuum packaging device 300, but also cleverly utilizes the time difference between the reciprocating motion of the pick-and-place mechanism 240 located between the vacuum packaging placement and the cutting mechanism 400 and the time difference between the rotation of the mounting frame 310 to achieve seamless docking.

[0027] like Figure 1 , Figure 2 and Figure 8As shown, further, the battery cell manufacturing system 10 also includes a cutting mechanism 400, a fine sealing mechanism 500, a voltage measuring mechanism 600, a positioning mechanism 700, a trimming mechanism 800, a double folding mechanism 900 and a heat sealing mechanism 1100. The vacuum packaging device 300, the cutting mechanism 400, the fine sealing mechanism 500, the voltage measuring mechanism 600, the positioning mechanism 700, the trimming mechanism 800, the double folding mechanism 900 and the heat sealing mechanism 1100 are sequentially arranged on the frame 100 along the conveying direction of the conveying device 200. The conveying device 200 is used to convey the battery cells to the vacuum packaging device 300, the cutting mechanism 400, the fine sealing mechanism 500, the voltage measuring mechanism 600, the positioning mechanism 700, the trimming mechanism 800, the double folding mechanism 900 and the heat sealing mechanism 1100 in sequence, so that the battery cells are respectively transported to the corresponding stations of the vacuum packaging device 300, the cutting mechanism 400, the fine sealing mechanism 500, the voltage measuring mechanism 600, the positioning mechanism 700, the trimming mechanism 800, the double folding mechanism 900 and the heat sealing mechanism 1100. The cutting mechanism 400 is used to cut off the burrs of the battery cells after vacuum packaging. The fine sealing mechanism 500 is used to finely seal the battery cells with the burrs cut off, that is, to finely seal the burr cut off part of the battery cells. The voltage measuring mechanism 600 is used to measure the voltage of the finely sealed battery cells to detect whether the voltage of the finely sealed battery cells is qualified. If the voltage of the battery cells is qualified, the battery cells are conveyed to the positioning mechanism 700 through the conveying mechanism. If the voltage of the battery cell is not up to standard, the battery cell will be discarded. The positioning mechanism 700 is used to position and adjust the battery cell with qualified voltage measurement. The trimming mechanism 800 is used to cut off the redundant edge sealing of the positioned battery cell. The double folding mechanism 900 is used to double fold the outer shell of the battery cell after the edge sealing is cut off, so as to fold the two sides of the outer shell of the battery cell respectively. The heat sealing mechanism 1100 is used to seal and heat the corners of the battery cell after the double folding treatment.

[0028] Since the vacuum packaging device 300, the cutting mechanism 400, the fine sealing mechanism 500, the voltage measuring mechanism 600, the positioning mechanism 700, the trimming mechanism 800, the double folding mechanism 900 and the heat sealing mechanism 1100 are sequentially arranged along the conveying direction of the conveying device 200, the conveying device 200 can sequentially convey the battery cells to the corresponding stations of each mechanism for processing. When the battery cells are subjected to the fine sealing process, the battery cells are easily damaged to form unqualified products. A voltage measuring mechanism 600 is arranged after the fine sealing mechanism 500 to measure the voltage of the finely sealed battery cells. If the voltage of the battery cells is qualified, the battery cells are sequentially conveyed to the corresponding stations of the positioning mechanism 700, the trimming mechanism 800, the double folding mechanism 900 and the heat sealing mechanism 1100 for further processing. Otherwise, the battery cells are not subjected to the fine sealing process. The battery cells are discarded, and unqualified battery cells are discarded in time to avoid the unqualified battery cells being further processed at the corresponding stations of the subsequent positioning mechanism 700, trimming mechanism 800, double folding mechanism 900 and heat sealing mechanism 1100, thereby wasting the processing efficiency of qualified battery cells, thereby solving the problem of low production efficiency of battery cells; the qualified battery cells detected by the voltage measuring mechanism 600 are first transported to the positioning mechanism 700 through the conveying device 200 for positioning adjustment, and then the battery cells are transported to the trimming mechanism 800, double folding mechanism 900 and heat sealing mechanism 1100 for processing in turn, so that the battery cells are transported to the trimming mechanism 800, double folding mechanism 900 and heat sealing mechanism 1100 for precise processing, thereby solving the problem of high defective rate in battery cell processing.

[0029] like Figure 2 and Figure 8As shown, specifically, the conveying device 200 includes a base assembly 210, a first sliding seat 220, a horizontal driving mechanism 230, a pick-and-place mechanism 240, a second sliding seat 250 and a clamping mechanism 260. The base assembly 210 is disposed on the frame 100, and the first sliding seat 220 and the second sliding seat 250 are both slidably connected to the base assembly 210. The sliding direction of the first sliding seat 220 is parallel to the sliding direction of the second sliding seat 250. The horizontal driving mechanism 230 is arranged on the base assembly 210, and the power output end of the horizontal driving mechanism is connected to the first sliding seat 220 and the second sliding seat 250 respectively. The horizontal driving mechanism is used to drive the first sliding seat 220 to slide relative to the base assembly 210 to the positions corresponding to the vacuum packaging device 300, the material cutting mechanism 400, the fine sealing mechanism 500, the voltage measuring mechanism 600 and the positioning mechanism 700 respectively. The horizontal driving mechanism is also used to drive the second sliding seat 250 to slide relative to the base assembly 210 to the positions corresponding to the positioning mechanism 700, the edge cutting mechanism 800, the double folding mechanism 900 and the heat sealing mechanism 1100 respectively. The pick-and-place mechanism 240 is arranged on the first sliding seat 220, so that the pick-and-place mechanism 240 slides relative to the base assembly 210 along with the first sliding seat 220. The placing and taking mechanism 240 is used to place or take out the battery cell, so that the battery cell can be transported to the vacuum packaging device 300, the cutting mechanism 400, the fine sealing mechanism 500, the voltage measuring mechanism 600 and the positioning mechanism 700 in sequence, so as to perform vacuum packaging, burr removal, fine sealing, voltage measurement and positioning adjustment processes on the battery cell. The clamping mechanism 260 is arranged on the second sliding seat 250, so that the clamping mechanism 260 slides relative to the base assembly 210 with the second sliding seat 250. The clamping mechanism 260 is used to clamp the battery cell after the positioning mechanism 700 positions and adjusts the battery cell, so that the battery cell can be accurately transported to the positions corresponding to the trimming mechanism 800, the double folding mechanism 900 and the heat sealing mechanism 1100, respectively, so as to realize the precise trimming, double folding and heat sealing operations on the battery cell.

[0030] like Figure 1 , Figure 2 and Figure 8 As shown, in this embodiment, the vacuum packaging device 300, the material cutting mechanism 400, the fine sealing mechanism 500, the voltage measuring mechanism 600 and the positioning mechanism 700 are sequentially arranged at intervals along the conveying direction of the conveying device 200, that is, the distance between the vacuum packaging device 300 and the material cutting mechanism 400, the distance between the material cutting mechanism 400 and the fine sealing mechanism 500, the distance between the fine sealing mechanism 500 and the voltage measuring mechanism 600, and the distance between the voltage measuring mechanism 600 and the positioning mechanism 700 are all equal, which is conducive to simplifying the arrangement of the first sliding seat 220 and the pick-and-place mechanism 240, and at the same time shortening the displacement of the first sliding seat 220 relative to the base assembly 210. See also Fig. 9Furthermore, the base assembly 210 includes a first base 212 and a second base 214, the first base 212 and the second base 214 are arranged parallel to the frame 100, the first sliding base 220 is slidably arranged on the first base 212, and the second sliding base 250 is slidably arranged on the second base 214. Fig.10 and Fig.11 As shown, the horizontal driving mechanism 230 includes a first horizontal driving mechanism 230a and a second horizontal driving mechanism 230b. The first horizontal driving mechanism 230a is installed on the first base 212, and the power output end of the first horizontal driving mechanism 230a is connected to the first sliding seat 220. The second horizontal driving mechanism 230b is installed on the second base 214, and the power output end of the second horizontal driving mechanism 230b is connected to the second sliding seat 250. The power output direction of the first horizontal driving mechanism 230a is parallel to the power output direction of the second horizontal driving mechanism 230b. In this embodiment, the sliding direction of the first sliding seat 220 is parallel to the sliding direction of the second sliding seat 250, and the sliding track of the first sliding seat 220 is parallel to the sliding track of the second sliding seat 250 and is arranged adjacent to each other. The first horizontal driving mechanism 230a and the second horizontal driving mechanism 230b are two independent power driving sources, which not only enable the first sliding seat 220 and the second sliding seat 250 to move to the position corresponding to the positioning mechanism 700, but also stagger the time difference between the first sliding seat 220 and the second sliding seat 250 to move to the position corresponding to the positioning mechanism 700, thereby avoiding the problem of mechanical interference between the pick-up and place mechanism 240 and the clamping mechanism 260. The clamping mechanism 260 clamps the battery cell after the positioning mechanism 700 is positioned and adjusted, so that the clamping mechanism 260 clamps the battery cell and transports it to the position corresponding to the trimming mechanism 800, the double folding mechanism 900 and the heat sealing mechanism 1100 in sequence with the second sliding seat 250, thereby ensuring the processing accuracy of the battery cell in the trimming mechanism 800, the double folding mechanism 900 and the heat sealing mechanism 1100, and making the structure of the battery cell manufacturing system 10 simpler.

[0031] like Fig.10As shown, specifically, the first horizontal driving mechanism 230a includes a first motor 232, a screw (not shown) and a nut 234. The first motor 232 is installed on the first base 212, and the power shaft of the first motor 232 is connected to one end of the screw, and the other end of the screw is rotatably connected to the first base 212. The nut 234 is sleeved on the screw and threadedly connected to the screw, and the nut 234 is connected to the first sliding seat 220. When the first motor 232 drives the screw to be rotatably connected relative to the first base 212, the screw drives the nut 234 to move horizontally. Since the nut 234 is connected to the first sliding seat 220, the nut 234 drives the first sliding seat 220 to slide relative to the first base 212, so that the first horizontal driving mechanism 230a drives the first sliding seat 220 to slide relative to the first base 212. It can be understood that in other embodiments, the first horizontal driving mechanism 230a is not limited to a motor-driven screw transmission mechanism, but can also be a motor-driven belt transmission mechanism. As shown in FIG. Fig.11 As shown, specifically, the second horizontal driving mechanism 230b includes a second motor 233, a first pulley 235, a second pulley 237 and a transmission belt (not shown). The second motor 233 is mounted on the second base 214, and the power output shaft of the second motor 233 is connected to the first pulley 235. The second pulley 237 is rotatably connected to the second base 214. The transmission belt is respectively sleeved on the first pulley 235 and the second pulley 237, and the transmission belt is connected to the second sliding seat 250. When the second motor 233 drives the first pulley 235 to rotate, the first pulley 235 drives the second pulley 237 to rotate relative to the second base 214 through the transmission belt, so that the transmission belt drives the second sliding seat 250 to slide relative to the second base 214 to positions corresponding to the positioning mechanism 700, the trimming mechanism 800, the double folding mechanism 900 and the heat sealing mechanism 1100.

[0032] like Figure 1 and Figure 2As shown, in order to reduce the displacement of the first sliding seat 220 sliding back and forth relative to the base assembly 210, further, the number of the pick-and-place mechanisms 240 is five, and the five pick-and-place mechanisms 240 are arranged side by side on the first sliding seat 220, and the distance between two adjacent pick-and-place mechanisms 240 is equal. A pick-and-place mechanism 240 is arranged between the material loading position of the battery cell and the vacuum packaging device 300, between the vacuum packaging placement and the cutting mechanism 400, between the cutting mechanism 400 and the fine sealing mechanism 500, between the fine sealing mechanism 500 and the voltage measuring mechanism 600, and between the voltage measuring mechanism 600 and the positioning mechanism 700, and the five pick-and-place mechanisms 240 place or take out the battery cell at the same rhythm, ensuring that the five pick-and-place mechanisms 240 can move in step with the reciprocating sliding of the first sliding seat 220 relative to the base assembly 210. A pick-and-place mechanism 240 is provided between the cell loading position and the vacuum packaging device 300, between the vacuum packaging placement and the cutting mechanism 400, between the cutting mechanism 400 and the fine sealing mechanism 500, between the fine sealing mechanism 500 and the voltage measuring mechanism 600, and between the voltage measuring mechanism 600 and the positioning mechanism 700, which can reduce the displacement of the first sliding seat 220 relative to the base assembly 210, shorten the turnover cycle of the cell processing at each station, and improve the processing efficiency of the cell. Fig.12 As shown, in this embodiment, each pick-and-place mechanism 240 includes a fixing frame 241, a suction cup assembly 243 disposed on the fixing frame 241, and a gas control mechanism (not shown). The fixing frame 241 is connected to the first sliding seat 220. The gas control mechanism is connected to the suction cup assembly 243, and the gas control mechanism is used to control the suction cup assembly 243 to suck or blow air, so that the suction cup assembly 243 can absorb or release the battery cell.

[0033] It can be understood that the battery cells at the loading position of the battery cells can be loaded manually or by a loading mechanism. Furthermore, the battery cell manufacturing system also includes a loading mechanism, which is used to load the battery cells. The loading mechanism is correspondingly arranged at the loading position of the battery cells. The loading mechanism, the vacuum packaging device 300, the cutting mechanism 400, the fine sealing mechanism 500, the voltage measuring mechanism 600 and the positioning mechanism 700 are arranged in sequence along the conveying direction of the conveying device 200. Specifically, the loading mechanism is a semi-automatic magazine-type loading mechanism.

[0034] like Fig.13As shown, specifically, the voltage measuring mechanism 600 includes a support frame 610, a fixed fixture 620, a connection seat assembly 630, a second lifting assembly 640, a first probe assembly 650 and a second probe assembly 660. The support frame 610 and the fixed fixture 620 are both connected to the frame 100. The fixed fixture 620 is arranged adjacent to the conveying device 200, and the fixed fixture 620 is used to position the battery cell. The second lifting assembly 640 is arranged on the support frame 610, and the power output end of the second lifting assembly 640 is connected to the connection seat assembly 630. The second lifting assembly 640 drives the connection seat assembly 630 to move up and down relative to the fixed fixture 620. The first probe assembly 650 and the second probe assembly 660 are both arranged on the connection seat assembly 630, and the first probe assembly 650 and the second probe assembly 660 are both arranged corresponding to the fixed fixture 620. The first probe assembly 650 is used to detect the voltage of the battery cell, and the second probe assembly 660 is used to detect the side voltage of the aluminum-plastic film of the battery cell, so that the voltage measuring mechanism 600 can measure the voltage of the battery cell and the side voltage of the aluminum-plastic film at the same time to comprehensively determine whether the battery cell is qualified. In this embodiment, the second lifting assembly 640 is a cylinder assembly. In other embodiments, the second lifting assembly 640 can also be a liquid cylinder assembly or an electric cylinder assembly. Fig.14 As shown, further, the first probe assembly 650 includes a setting seat 652, a probe body 654 and a piercing drill bit 656. The setting seat 652 is connected to the connecting seat assembly 630, and the probe body 654 and the piercing drill bit 656 are installed side by side on the setting seat 652. The piercing drill bit 656 is used to pierce the sol-sealed edge area of ​​the aluminum-plastic film of the battery cell, and the probe body 654 is used to detect the voltage of the battery cell. Fig.10 In the present embodiment, the probe body 654 includes a first slide 654a, a probe rod 654b, and a convex column portion 654c connected to one end of the probe rod 654b. The setting seat 652 is provided with a first mounting through hole 652a. The first slide 654a is located in the first mounting through hole 652a and is connected to the setting seat 652. The first slide 654a is sleeved on the probe rod 654b and is slidably connected to the probe rod 654b. The convex column portion 654c is used to abut against the battery cell to detect the voltage of the battery cell. Since the probe rod 654b is slidably connected to the first slide 654a, when the probe rod 654b abuts against the battery cell, the probe rod 654b slides relative to the setting seat 652, thereby avoiding the problem that the probe rod 654b collides and breaks or hits the fixing fixture 620 due to inertia, thereby extending the service life of the first probe assembly 650.

[0035] like Fig.14As shown, further, the piercing drill bit 656 includes a drill bit rod body 656a and a third slide 656b, the setting seat 652 is provided with a second mounting through hole 652b, and the third slide 656b is located in the second mounting through hole 652b and connected to the setting seat 652. The third slide 656b is sleeved on the drill bit rod body 656a and is slidably connected to the drill bit rod body 656a. In this embodiment, the drill bit rod body 656a is provided with a piercing blade 6562 at a position adjacent to the convex column portion 654c, and the piercing blade 6562 is used to pierce the sol-sealed edge area of ​​the aluminum-plastic film of the battery cell. Since the drill rod 656a is slidably connected to the third sliding member 656b, when the drill rod 656a pierces the aluminum-plastic film and contacts the fixed fixture 620, the drill rod 656a slides relative to the setting seat 652 under the action of resistance, avoiding the drill rod 656a from breaking or the stabbing blade 6562 from stabbing the fixed fixture 620, thereby extending the service life of the second probe assembly 660. Further, the distance between the stabbing blade 6562 and the fixed fixture 620 is a first distance, and the distance between the convex column 654c and the fixed fixture 620 is a second distance, and the first distance is smaller than the second distance, so that when the probe body 654 and the piercing drill 656 both move in a direction of synchronously approaching the fixed fixture 620 relative to the setting seat 652, the stabbing blade 6562 first contacts and pierces the battery cell, which is beneficial for the voltage measuring mechanism 600 to simultaneously realize voltage detection of the voltage of the battery cell and the side voltage of the aluminum-plastic film, thereby improving the detection efficiency of the voltage measuring mechanism 600. In this embodiment, the convex column portion 654c is cylindrical. According to the voltage detection data of the battery cell and the side voltage of the aluminum-plastic film, it is comprehensively determined whether the currently detected battery cell is qualified. If the battery cell is unqualified, it is picked out and discarded; otherwise, the battery cell is transported to the next station, i.e., the positioning mechanism 700 station, by the conveying device 200 for operation, so as to achieve the effect of timely removing the unqualified battery cell, and avoid the unqualified battery cell and the qualified battery cell queuing together to enter the next station, i.e., the positioning mechanism 700 station for processing, which greatly improves the manufacturing efficiency of the battery cell.

[0036] like Fig.13 As shown, further, the fixed fixture 620 includes a fixed fixture body 623 and an auxiliary detection block 625. The fixed fixture body 623 is connected to the frame 100. The fixed fixture body 623 is provided with a first placement groove 623a and a second placement groove 623b that are connected to each other. The first placement groove 623a is used to place and position the battery cell, and the second placement groove 623b is used to place the auxiliary detection block 625. The auxiliary detection block 625 is used to abut against the aluminum-plastic film of the battery cell to detect the side voltage of the aluminum-plastic film of the battery cell. By setting the auxiliary detection block 625, it is helpful to improve the measurement efficiency and accuracy of the side voltage of the aluminum-plastic film of the battery cell. Fig.13 and Fig.14As shown, in one embodiment, the connecting seat assembly 630 includes a connecting seat 631, a first mounting block 633 and a second mounting block 635, the connecting seat 631 is connected to the power drive rod of the second lifting assembly 640, the first mounting block 633 and the second mounting block are both slidably disposed on the connecting seat 631, the first probe assembly 650 is mounted on the first mounting block 633, and the second probe assembly 660 is mounted on the second mounting block 635, so that the first probe assembly 650 and the second probe assembly 660 are both mounted on the connecting seat assembly 630.

[0037] like Fig.13 As shown, further, the connection seat 631 is provided with a first waist-shaped hole 631a, and the first mounting block 633 is provided with a first fixing hole (not shown). The connection seat assembly 630 also includes a first fixing member (not shown), which is respectively inserted into the first waist-shaped hole 631a and the first fixing hole, so that the first mounting block 633 is fixed to the connection seat 631 through the first fixing member. When it is necessary to adjust the connection position of the first mounting block 633 and the connection seat 631, the first fixing member is loosened, the relative position of the first mounting block 633 and the connection seat 631 is adjusted to an appropriate position, and the first fixing member is locked, so that the connection position of the first mounting block 633 and the connection seat 631 is adjustable, thereby improving the convenience of use of the voltage measuring mechanism 600. Further, the connection seat 631 is provided with a second waist-shaped hole 631b, and the second mounting block 635 is provided with a second fixing hole. The connection seat assembly 630 also includes a second fixing member (not shown), which is respectively inserted into the second waist-shaped hole 631b and the second fixing hole, so that the second mounting block 635 is fixed to the connection seat 631 through the second fixing member. When it is necessary to adjust the connection position of the second mounting block 635 and the connection seat 631, the second fixing member is loosened, the relative position of the second mounting block 635 and the connection seat 631 is adjusted to an appropriate position, and the second fixing member is locked, so that the connection position of the second mounting block 635 and the connection seat 631 is adjustable, thereby improving the convenience of use of the voltage measuring mechanism 600. Further, the connection seat assembly 630 also includes a connecting plate 637 and at least two guide posts 639, and the connecting plate 637 is connected to each guide post 639. At least two guide posts 639 are arranged in parallel. Each guide post 639 is slidably arranged on the support frame 610. At least two guide posts 639 are connected to the connection seat 631. When the second lifting assembly 640 drives the connection seat 631 to move relative to the support frame 610, since the connection plate 637 is connected to each guide post 639, the connection seat 631 can drive all guide posts 639 to slide relative to the support frame 610 at the same time, so that the connection seat 631 always moves parallel to the support frame 610, thereby improving the movement accuracy of the connection seat 631, avoiding the first probe assembly 650 from deviating and acting on the battery cell, thereby improving the voltage accuracy of the battery cell detected by the first probe assembly 650. Similarly, the voltage accuracy of the battery cell detected by the second probe assembly 660 is improved.

[0038] like Figure 8 and Fig. 9 As shown, further, a first guide rail is provided on the side of the first base 212 facing away from the frame 100 (only the mounting groove 212a of the first guide rail is shown in the figure), and the first sliding seat 220 is slidably arranged on the first guide rail, so that the first sliding seat 220 is better slidably arranged on the first base 212. A second guide rail 214a is provided on the side of the second base 214 facing away from the frame 100, and the second sliding seat 250 is slidably arranged on the second guide rail 214a, so that the second sliding seat 250 is better slidably arranged on the second base 214. In this embodiment, the first guide rail is arranged in parallel with the second guide rail 214a, and the extension direction of the first guide rail is not colinear with the extension direction of the second guide rail 214a. The positioning mechanism 700, the trimming mechanism 800, the double folding mechanism 900 and the heat sealing mechanism 1100 are all arranged along the extension direction of the second guide rail 214a.

[0039] Further, the positioning mechanism 700 includes a positioning adjustment component, a first clamping component and a second clamping component. The positioning adjustment component includes a hand wheel, an adjustment screw and a fixed seat, and the fixed seat is installed on the second base 214. The hand wheel is connected to one end of the adjustment screw. The adjustment screw is rotatably connected to the fixed seat, and the peripheral wall of the adjustment screw is provided with a first screw connection portion and a second screw connection portion with opposite screw directions. The first clamping component is sleeved on the first screw connection portion and threadedly connected to the adjustment screw, and the first clamping component is slidably arranged on the second base 214. The second clamping component is sleeved on the second screw connection portion and threadedly connected to the adjustment screw, and the second clamping component is slidably arranged on the second base 214. The first clamping component and the second clamping component are respectively located on both sides of the second guide rail 214a. When the hand wheel is rotated in the forward direction, the hand wheel drives the adjustment screw to rotate in the forward direction, so that the first clamping component and the second clamping component are close to each other; on the contrary, when the hand wheel is rotated in the reverse direction, the hand wheel drives the adjustment screw to rotate in the reverse direction, so that the first clamping component and the second clamping component are away from each other. In this way, the gap between the first clamping assembly and the second clamping assembly is adjusted to achieve the adjustment of the relative position of the first clamping assembly and the second clamping assembly, so as to be suitable for adjusting the battery cells of different sizes.

[0040] It can be understood that, since the first guide rail and the second guide rail are staggered, and the gap between the first clamping assembly and the second clamping assembly needs to be adjusted to adapt to different sizes of batteries, the distance between the position where the voltage measuring mechanism takes out the battery and the first sliding seat of the pick-and-place mechanism located between the voltage measuring mechanism and the positioning mechanism is different from the distance between the position where the positioning mechanism places the battery and the first sliding seat of the pick-and-place mechanism. In order to improve the applicability of the pick-and-place mechanism, further, the fixed frame 241 of the pick-and-place mechanism located between the voltage measuring mechanism and the positioning mechanism is slidably connected to the first sliding seat 220, so that the relative position of the suction cup assembly and the first sliding seat can be flexibly adjusted to adapt to the gap between the first clamping assembly and the second clamping assembly at different positions. In this embodiment, the direction in which the fixed frame slides relative to the first sliding seat is perpendicular to the direction in which the first sliding seat slides relative to the first base. In this embodiment, the first sliding seat 220 includes a sliding seat body 222, a lifting frame 224 connected to the sliding seat body, and a sliding sleeve seat 226 slidably connected to the lifting frame. The fixed frame is slidably connected to the sliding sleeve seat, so that the fixed seat is slidably connected to the first sliding seat. Specifically, the sliding direction of the sliding sleeve seat relative to the lifting frame, the sliding direction of the fixed sleeve relative to the sliding sleeve seat, and the sliding direction of the first sliding seat relative to the first base are perpendicular to each other. In one embodiment, the part where the fixed frame and the sliding sleeve seat are slidably connected is a rod structure.

[0041] like Fig.13 and Fig.14As shown, further, the pick-and-place mechanism 240 also includes a lifting drive mechanism 245, which is installed on the lifting frame, and the power output end of the lifting drive mechanism is connected to the sliding sleeve seat, so that the lifting drive mechanism drives the sliding sleeve seat to slide relative to the lifting frame to adjust the height of the suction cup assembly relative to the first base, thereby improving the applicability of the pick-and-place mechanism. In this embodiment, the lifting drive mechanism is a cylinder mechanism. Further, the pick-and-place mechanism 240 also includes a position adjustment drive assembly 247, which is installed on the first sliding seat, and the power output end of the position adjustment drive assembly is connected to the fixed frame to drive the fixed frame to slide relative to the first sliding seat. In this embodiment, the position adjustment drive assembly is a cylinder assembly. In order to improve the accuracy of the position adjustment drive assembly driving the fixed frame to slide relative to the first sliding seat, further, the sliding sleeve seat is provided with a first sensor 226b and a second sensor 226c arranged side by side, and the fixed frame is provided with a sensor sheet 241a. The sensor sheet is also connected to the control end of the position adjustment drive assembly in communication. When the sensor sheet moves to a position corresponding to the first sensor, the sensor sheet moves to the first extreme position with the fixed frame. When the sensing piece moves to the position corresponding to the second sensor, the sensing piece moves to the second limit position with the fixed frame. In this way, the position adjustment drive assembly drives the sensing piece to slide accurately with the fixed frame relative to the first sliding seat. In order to reduce the space occupied by the pick-up and place mechanism, further, the sliding sleeve seat is provided with a position avoidance hole 226a, which is used to avoid the position adjustment drive assembly 247, and the position adjustment drive assembly 247 is located between the positions where the lifting frame is connected to the sliding seat body, which greatly reduces the space occupied by the pick-up and place mechanism. Further, the first clamping assembly includes a first mounting seat, a first nut, a first driving source and a first clamping plate. The first mounting seat is slidably arranged on the second base 214, and the first mounting seat is connected to the first nut. The first nut is sleeved on the first screw connection part and is threadedly connected to the first screw connection part. The first driving source is installed on the side of the first mounting seat away from the second sliding seat 250, and the power output end of the first driving source is connected to the first clamping plate, so that the first driving source drives the first clamping plate to move. The second clamping assembly includes a second mounting seat, a second nut, a second driving source and a second clamping plate. The second mounting seat is slidably arranged on the second base 214, and the second mounting seat is connected to the second nut. The second nut is sleeved on the second threaded portion and is threadedly connected to the second threaded portion. The second driving source is installed on the side of the second mounting seat away from the second sliding seat 250, and the power output end of the second driving source is connected to the second clamping plate, so that the second driving source drives the second clamping plate to move. In this embodiment, the first clamping plate and the second clamping plate are parallel and relatively arranged, and the first clamping plate and the second clamping plate move in a direction close to or away from each other to loosen or clamp the battery core. The first driving source and the second driving source are both cylinder assemblies. In other embodiments, the first driving source and the second driving source can also be electric cylinder assemblies or liquid cylinder assemblies.

[0042] It should be noted that the direction of the clamping force of the first clamping plate and the second clamping plate clamping the battery cell is the first direction, the direction of the clamping force of the clamping mechanism 260 clamping the battery cell is the second direction, and there is an angle between the first direction and the second direction. When the first clamping plate and the second clamping plate clamp the battery cell, the clamping mechanism 260 moves with the second sliding seat 250 relative to the second base 214 to a position corresponding to the positioning mechanism 700, and the clamping mechanism 260 clamps the battery cell. After the clamping mechanism 260 clamps the battery cell, the first clamping plate moves in a direction away from the second clamping plate, so that the battery cell is better positioned and the clamp is clamped on the battery cell, thereby improving the positioning and clamping accuracy of the battery cell. In this embodiment, the first direction is perpendicular to the second direction, and both the first direction and the second direction are perpendicular to the extension direction of the second guide rail 214a, so that the first clamping plate and the second clamping plate jointly perform pre-light pressure clamping on the battery cell horizontally, so as to first adjust the battery cell to a predetermined position, and enable the clamping mechanism 260 to perform heavy pressure clamping on the battery cell longitudinally. By clamping and positioning in two different directions, the problem of inadequate clamping and positioning of the battery cell can be avoided, and the positioning and clamping accuracy of the battery cell can be improved.

[0043] In order to improve the effect of the first clamping plate and the second clamping plate jointly clamping the battery cell, and at the same time reduce the weight of the first clamping plate and the second clamping plate, further, the first clamping plate includes a first clamping plate body and a first clamping block connected to each other, and the first clamping plate body is arranged on the first mounting seat. The first clamping block is arranged adjacent to the second clamping plate. The power shaft of the first driving source is connected to the first clamping plate body. The second clamping plate includes a second clamping plate body and a second clamping block connected to each other, and the second clamping plate body is arranged on the second mounting seat. The second clamping block is arranged adjacent to the first clamping plate. The power shaft of the second driving source is connected to the second clamping plate body. In this embodiment, the first clamping block is parallel to the second clamping block and is arranged opposite to each other. The cross-section of the first clamping block and the cross-section of the second clamping block are both L-shaped, so that the area of ​​the first clamping plate and the second clamping plate clamping the battery cell together is larger, and at the same time the weight of the first clamping plate and the second clamping plate is reduced. In order to further improve the effect of the first clamping plate and the second clamping plate jointly clamping the battery cell, in one embodiment, the first clamping block is provided with a first avoidance surface inclined toward the second clamping plate body, and the second clamping block is provided with a second avoidance surface inclined toward the first clamping plate body. When the first clamping block and the second clamping block move toward each other, both the first avoidance surface and the second avoidance surface can avoid abutting and clamping the battery cell, and allow the battery cell to have a certain amount of movement space during the process of being clamped by the first clamping block and the second clamping block, thereby enabling the first clamping block and the second clamping block to better clamp the battery cell.

[0044] Further, the first clamping plate is also slidably arranged on the first mounting seat, and the second clamping plate is also slidably arranged on the second mounting seat, so that the first clamping plate slides more smoothly relative to the first mounting seat, and the second clamping plate slides more smoothly relative to the second mounting seat, thereby making the clamping accuracy between the first clamping plate and the second clamping plate higher. In this embodiment, the first mounting seat and the second mounting seat are both provided with a slide rail to realize the corresponding clamping plate sliding arrangement. In other embodiments, the first mounting seat and the second mounting seat can also realize the corresponding clamping plate sliding arrangement by providing a guide rod. Further, the positioning mechanism 700 also includes a calibration component, the calibration component includes a scale, and the scale is connected to the first clamping block. The scale is provided with a plurality of scale lines arranged side by side, and the arrangement direction of the scale lines is parallel to the movement direction of the first clamping block. In this embodiment, a side of the first clamping block adjacent to the second clamping block is flush with the 0 scale line on the scale. The side of the second clamp block adjacent to the first clamp block moves with the second clamp block to a position corresponding to one of the scale lines on the scale, and the user can intuitively read the clamping gap between the first clamp block and the second clamp block, and turn the hand wheel as needed. This helps the user to quickly know whether the clamping gap between the first clamp block and the second clamp block is adjusted in place, improves the adjustment efficiency of the clamping gap, avoids misjudgment of the adjustment by direct visual inspection, and improves the ease of use of the positioning mechanism 700.

[0045] Furthermore, the trimming mechanism 800 includes two symmetrically arranged trimming components, namely a first trimming component and a second trimming component. The first trimming component is arranged on the first mounting seat, and the second trimming component is arranged on the second mounting seat. The two trimming components respectively cut the excess edge banding on both sides of the battery cell, thereby achieving simultaneous removal of the excess edge banding on both sides of the battery cell, thereby improving the removal efficiency of the edge banding of the battery cell. Specifically, the first trimming component includes a first slide seat, a first adjustment seat, a first trimming drive source, a first guide member and a first hob member, the first adjustment seat is connected to the first slide seat, and the first mounting seat is connected to a side of the first adjustment seat facing away from the first slide seat. The first trimming drive source is arranged on the first mounting seat. The first guide member and the first hob member are both rotatably connected to the first adjustment seat. The first guide and the first roller cutter are arranged side by side along the extension direction of the second guide rail 214a, and the first guide is located on the side of the first roller cutter adjacent to the positioning mechanism 700, so that the battery cell is guided by the first guide before trimming, thereby flattening the redundant edge banding of the battery cell, which is conducive to improving the first roller cutter to better cut the redundant edge banding of the battery cell. The power output end of the first trimming drive source is connected to the first roller cutter to drive the first roller cutter to rotate relative to the first adjustment seat. In this embodiment, the number of the first roller cutter and the first guide are both two, the two first roller cutters are arranged oppositely, and the two first roller cutters are meshed through the gear assembly to better synchronize the two first roller cutters, so that the two first roller cutters can better cut the redundant edge banding of the battery cell. The two first guides are arranged oppositely. In this embodiment, the first trimming drive source is a motor, and the power output end of the first trimming drive source is connected to one of the first roller cutters. For example, the power output end of the first trimming drive source is connected to one of the first roller cutters through a belt drive.

[0046] Specifically, the second trimming assembly includes a second slide, a second adjustment seat, a second trimming drive source, a second guide and a second hob. The second adjustment seat is connected to the second slide, and the second mounting seat is connected to the side of the second adjustment seat that faces away from the second slide. The second trimming drive source is arranged on the second mounting seat. The second guide and the second hob are both rotatably connected to the second adjustment seat. The second guide and the second hob are arranged side by side along the extension direction of the second guide rail 214a, and the second guide is located on the side of the second hob adjacent to the positioning mechanism 700, so that the battery cell is guided by the second guide before trimming, thereby flattening the excess edge of the battery cell, which is conducive to improving the second hob to better cut off the excess edge of the battery cell and improve the cutting accuracy. The power output end of the second trimming drive source is connected to the second hob to drive the second hob to rotate relative to the second adjustment seat. In the present embodiment, the number of the second hob members and the second guide members are both two, the two second hob members are arranged opposite to each other, and the two second hob members are meshed and driven by a gear assembly, so that the two second hob members are better synchronized and meshed, and then the two second hob members can better cut off the redundant edge banding of the battery cell. The two second guide members are arranged opposite to each other. In the present embodiment, the second trimming drive source is a motor, and the power output end of the second trimming drive source is connected to one of the second hob members. For example, the power output end of the second trimming drive source is connected to one of the second hob members through a belt drive. Since the first adjustment seat and the first clamping plate body are both arranged on the first mounting seat, the first adjustment seat and the first clamping plate body are both adjusted simultaneously with the first mounting seat. Similarly, the second adjustment seat and the second clamping plate body are both adjusted simultaneously with the second mounting seat, which improves the convenience of adjustment of the battery cell manufacturing system.

[0047] In one of the embodiments, the first slide is slidably set on the first mounting seat, and the second slide is slidably set on the second mounting seat, so that the relative position of the first slide and the second slide is adjustable, and then the relative position of the first adjustment seat and the second adjustment seat is adjustable, so that the trimming mechanism 800 can be suitable for cutting off excess edge sealing of battery cells of different sizes, thereby improving the applicability of the trimming mechanism 800.

[0048] Further, the double folding mechanism 900 includes two folding components arranged opposite to each other, and the two folding components are respectively arranged on the first slide and the second slide, so that the spacing between the two folding components can be adjusted by adjusting the relative position between the first slide and the second slide, so that the two folding components can fold the two sides of the battery cells of different sizes at the same time, and because the first adjustment seat is connected to the first mounting seat, the first adjustment seat and the folding components located on the same first mounting seat as the first adjustment seat can be adjusted with the first mounting seat, and similarly, the second adjustment seat and the folding components located on the same second mounting seat as the second adjustment seat can be adjusted with the second mounting seat, thereby improving the adaptability of the battery cell manufacturing system 10. Further, the heat sealing mechanism 1100 is arranged on the second base 214, and the heat sealing mechanism 1100 is arranged on one side of the second guide rail 214a. The heat sealing mechanism 1100 is used to seal the corners of the battery cell after the double folding process. In this embodiment, the heat sealing mechanism 1100 is located on the side of the double folding mechanism 900 away from the trimming mechanism 800, so that the corners of the battery cell after double folding are further heat sealed.

[0049] The steps of manufacturing battery cells in the above-mentioned battery cell manufacturing system 10 include: first, conveying the battery cell from the upper material position to the vacuum packaging device through the conveying device 200; then, vacuum packaging the battery cell through the vacuum packaging device 300; then, conveying the vacuum-packaged battery cell to the cutting mechanism 400 through the conveying device 200; then, cutting off the burrs of the vacuum-packaged battery cell through the cutting mechanism 400 to cut off the excess burrs of the vacuum-packaged battery cell; then, conveying the battery cell with the burrs cut off to the fine sealing mechanism 500 through the conveying device 200; then, fine sealing the burr cut-off part of the battery cell through the fine sealing mechanism 500; then, conveying the finely sealed battery cell to the voltage measuring mechanism 600 through the conveying device 200; then, measuring the voltage of the finely sealed battery cell through the voltage measuring mechanism 600. Then, determine whether the voltage of the battery cell is qualified. If the voltage of the battery cell is qualified, the battery cell with qualified voltage is transported to the positioning mechanism through the pick-and-place mechanism; otherwise, the battery cell is discarded; then, the positioning mechanism 700 is used to adjust the conveying direction of the battery cell; then, the positioned and adjusted battery cell is transported to the trimming mechanism 800 through the transport device 200; then, the excess edge sealing of the positioned battery cell is cut off through the trimming mechanism 800; then, the battery cell after the edge sealing is cut off is transported to the double folding mechanism 900 through the transport device 200; then, the outer shell of the battery cell after the edge sealing is cut off is double folded by the double folding mechanism 900; then, the battery cell after the double folding is transported to the heat sealing mechanism 1100 through the transport device 200; finally, the corners of the battery cell after the double folding are sealed by the heat sealing mechanism 1100.

[0050] Compared with the prior art, the present invention has at least the following advantages:

[0051] 1. Since the first lifting component 324 drives the cover plate 323 to move up and down relative to the shell 322, the tightness of the cover plate 323 and the accommodating chamber 323a surrounded by the shell 322 is ensured when the vacuum assembly is evacuated, so that the vacuum assembly can better evacuate the accommodating chamber 323a, and the cover plate 323 can leave the shell 322 after the vacuum packaging process of the battery cell is completed to take out the packaged battery cell; 2. When the bayonet 3262 of the piercing mechanism 326 pierces the battery cell, the bayonet 3262 is inserted into the guide slot 3264, and the excess electrolyte that is not absorbed by the battery cell flows out to the carrier plate 326c, and flows from the guide slot 3264 of the carrier plate 326c to the accommodating chamber 323a, and at the same time, the vacuum assembly is used to evacuate the accommodating chamber 323a 3. The auxiliary pressure plate assembly 327 is slidably arranged on the cover plate 323, so that the auxiliary pressure plate assembly 327 abuts against and presses the battery cell when the bayonet 3262 is in operation of puncturing the battery cell on the carrier plate 326c, thereby avoiding the problem that the battery cell is deflected due to movement relative to the carrier plate 326c during the puncturing process, and the bayonet 3262 is accurately inserted into the guide slot 3264 under the guidance of the avoidance groove 327a, so that the bayonet 3262 can accurately puncture the battery cell, thereby avoiding the problem that the vacuum packaging device 300 is easy to puncture the battery cell during the puncturing process, which is beneficial to improving the accuracy of the bayonet 3262 in puncturing the battery cell.

[0052] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A vacuum packaging device, characterized in that: include: Mounting frame; A shell, the shell is arranged on the mounting frame, and the shell is provided with a first connecting hole; A cover plate, the cover plate is disposed on the shell, and an accommodating cavity is formed between the cover plate and the shell, the cover plate is provided with a mounting hole, and the first connecting hole and the mounting hole are both connected to the accommodating cavity; A first lifting assembly, wherein the first lifting assembly is disposed on the mounting frame, and a power output end of the first lifting assembly is connected to the cover plate, and the first lifting assembly drives the cover plate to move up and down relative to the shell; The puncture mechanism comprises a pushing assembly, a knife holder assembly and a carrying plate; the pushing assembly is arranged on the cover plate, and the pushing assembly is partially located in the accommodating cavity; the knife holder assembly is located in the accommodating cavity, and the knife holder assembly is connected to the power output end of the pushing assembly; the carrying plate is arranged in the accommodating cavity, and the carrying plate is used to support the battery cell; the knife holder assembly comprises a bayonet, and the bayonet is used to puncture the battery cell on the carrying plate; a guide slot is provided on the carrying plate; An auxiliary pressure plate assembly, wherein the auxiliary pressure plate assembly is slidably arranged on the cover plate, the auxiliary pressure plate assembly comprises a sliding sleeve, a sliding rod and an auxiliary pressure plate body, the cover plate is provided with a positioning groove, the sliding sleeve is located in the positioning groove and is connected to the cover plate, and the sliding sleeve is sleeved on the sliding rod and is slidably connected to the sliding rod, the auxiliary pressure plate body is correspondingly arranged with the bearing plate, the auxiliary pressure plate body is connected with the sliding rod, and the auxiliary pressure plate body is located on a side of the cover plate adjacent to the shell; the auxiliary pressure plate body is provided with an avoidance groove for guiding the bayonet to pierce the battery cell, and the avoidance groove is correspondingly connected with the guide slot; A vacuum pumping component, the vacuum pumping component is connected to the first connecting hole, and the vacuum pumping component is used to vacuum the accommodating cavity; The vacuum packaging device further includes a heat sealing component, the heat sealing component is located in the accommodating cavity, the piercing mechanism is disposed adjacent to the heat sealing component, the heat sealing component is used to heat-seal the battery core, the heat sealing component is provided with a vacuum hole connected to the accommodating cavity, and the vacuum hole is respectively connected to the accommodating cavity and the first connecting hole; The vacuum hole comprises a first vacuum hole, a first exhaust branch hole, a second vacuum hole and a second exhaust branch hole; the first vacuum hole and the first exhaust branch hole are both provided in the first heat sealing head, the first vacuum hole is connected with the first exhaust branch hole, the second vacuum hole and the second exhaust branch hole are both provided in the second heat sealing head, the second vacuum hole is connected with the second exhaust branch hole, the first vacuum hole extends along the axial direction of the first heat sealing head, the first exhaust branch hole is connected with the first vacuum hole, and the first exhaust branch hole passes through the first heat sealing head, and the extension direction of the first exhaust branch hole is perpendicular to the extension direction of the first vacuum hole; The number of the first air extraction branch holes is four, the four first air extraction branch holes are spaced apart and are all connected to the first vacuum extraction hole; the second vacuum extraction hole extends along the axial direction of the second heat sealing head, the second air extraction branch hole is connected to the second vacuum extraction hole, and the second air extraction branch hole passes through the second heat sealing head, and the extension direction of the second air extraction branch hole is perpendicular to the extension direction of the second vacuum extraction hole; The number of the second air suction branch holes is four, and the four second air suction branch holes are distributed at intervals and are all connected to the second vacuum hole.

2. The vacuum packaging device according to claim 1, characterized in that: A guide groove is formed on one side of the bearing plate adjacent to the auxiliary pressure plate assembly, and the guide groove is communicated with the guide slot.

3. The vacuum packaging device according to claim 2, characterized in that: The extending direction of the guiding groove is perpendicular to the extending direction of the guiding slot.

4. The vacuum packaging device according to claim 2, characterized in that: The carrier plate is provided with a positioning groove, the positioning groove is communicated with the guide slot and the guide groove respectively, and the positioning groove is used for positioning the battery cell.

5. The vacuum packaging device according to any one of claims 1 to 4, characterized in that: A partition rib is provided on the inner wall of the shell, and the partition rib is located in the accommodating cavity and divides the accommodating cavity into a first accommodating groove and a second accommodating groove. The partition rib supports the supporting plate, the first accommodating groove corresponds to the supporting plate, and the first accommodating groove is connected to the guide slot, and the second accommodating groove is connected to the first connecting hole.

6. The vacuum packaging device according to claim 5, characterized in that: The vacuum packaging device also includes a waste liquid recovery component. The shell is also provided with a drainage hole connected to the first accommodating groove. The waste liquid recovery component is connected to the drainage hole and is used to extract and recover waste liquid.

7. The vacuum packaging device according to claim 6, characterized in that: The bottom of the first accommodating groove is provided with an inclined surface, and the inclined surface extends to a position adjacent to the drainage hole.

8. A battery cell manufacturing system, characterized in that: It comprises a frame, a conveying device arranged on the frame and a vacuum packaging device as described in any one of claims 1 to 7, wherein the mounting frame is arranged on the frame, and the conveying device is used to take out or place the battery cell on the carrying plate.

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