CN116093354A - Press fitting equipment - Google Patents

Abstract

The present invention relates to the technical field of battery production, in particular to a pressing device. This application will use the first feeding mechanism, the second feeding mechanism and the third feeding mechanism for feeding the first electrode sheet, the separator sheet and the second electrode sheet respectively. The feeding mechanism is installed corresponding to different stations of the same conveying mechanism, and the pressing mechanism for pressing the first electrode sheet, the diaphragm sheet and the second electrode sheet is also installed corresponding to the conveying mechanism, so that the first electrode sheet, the diaphragm sheet and the second electrode sheet The second electrode sheet can be sequentially loaded on different stations of the same pressing equipment, and finally can be pressed to form a battery cap; thus, the positioning, feeding and pressing of the electrode sheet and the diaphragm sheet 22 can be concentrated on the same The production and processing line is processed by machinery, without manual positioning and feeding, with a high degree of automation and low labor intensity, which can improve the processing efficiency of battery caps and optimize the integration effect of pressing equipment.

Description

Pressing equipment

technical field

The invention relates to the technical field of battery production, in particular to a pressing device.

Background technique

In the process of battery processing, the positive electrode and the negative electrode are laminated and placed through the diaphragm, and then heated and pressed to form the battery cap. In order to prevent the short circuit between the positive electrode and the negative electrode, the diaphragm needs to be positioned on the positive electrode. and between the negative plate,. In the existing technology, the positioning and feeding of the electrode sheet and the diaphragm sheet are mostly done manually, and the subsequent pressing is carried out on the pressing mechanism, which has a low degree of automation, a long processing cycle, and high labor intensity. Large, resulting in poor processing efficiency of the battery cap.

Contents of the invention

The main purpose of the present invention is to propose a pressing device, aiming to solve the technical problem of low automation of battery cap processing in the prior art.

In order to achieve the above purpose, the pressing equipment proposed by the present invention is used to press the electrode sheet and the diaphragm sheet. The pressing equipment includes a conveying mechanism, a carrying jig, a first feeding mechanism, a second feeding mechanism, a second Three loading mechanism and pressing mechanism: the conveying mechanism is formed with a first loading station, a second loading station, a third loading station and a pressing station; the carrying jig is installed on the A conveying mechanism, the carrying jig is used to carry the electrode sheet and the diaphragm sheet; the conveying mechanism is used to sequentially transport the carrying jig from the first loading station to the second loading station, the third A feeding station and a pressing station; the first feeding mechanism is set corresponding to the first feeding station, and the first feeding mechanism is used to feed the first electrode sheet to the carrying jig; The second feeding mechanism is set corresponding to the second feeding station, and the second feeding mechanism is used to feed the diaphragm sheet to the carrying jig so as to stack the diaphragm sheet on the first on the electrode sheet; the third feeding mechanism is set corresponding to the third feeding station, and the third feeding mechanism is used to feed the second electrode sheet to the carrying jig so that the second electrode The sheet is stacked on the diaphragm sheet; the press-fit mechanism is set corresponding to the press-fit station, and the press-fit mechanism is used to stack the first electrode sheet, diaphragm sheet and second electrode sheet stacked on the carrying jig Press fit to form the battery cap.

Optionally, the second feeding mechanism includes a punching device, and the punching device includes a punching die and a coiling mechanism; the punching die includes a support table, a briquetting block, a die cutter and a vacuum mechanism; the support table has a support The support surface is provided with a first die hole and a second die hole; the pressing block is movably mounted on the support table and is located on one side of the support surface, so as to be close to or away from the support surface; The pressing block is used to press and fix the strip on the supporting surface, so that the strip covers the first die hole and the second die hole; the die cutter includes a first cutter and a second cutter cutter, the cutting area of the second cutter is larger than that of the first cutter; or withdraw from the first die hole; the second tool is movably mounted on the support table and arranged opposite to the second die hole, so as to extend into or exit the second die hole; the first The tool is used to cut out the hollowed-out area from the material strip when extending into the first die hole; the second tool is used to extend into The second die hole is used to cut the diaphragm sheet from the periphery of the hollow area of the material strip; the second cutter is provided with a connected air hole and an air channel, and the air hole is located on the second The blade end of the knife; the vacuum mechanism is installed on the support table, the air passage is connected with the vacuum port of the vacuum mechanism, and the vacuum mechanism is used to adjust the vacuum degree of the air passage; the roll The material mechanism includes an unwinding assembly and a winding assembly, the unwinding assembly is used to unwind the material tape before being cut, and the winding assembly is used to rewind the cut material tape; the support The stage is located on the feeding path of the material belt, so that the material belt passes the support surface.

Optionally, the second feeding mechanism also includes a lifting mechanism, which can be lifted and installed under the stamping die; During the station, the carrying jig or the first electrode sheet is lifted toward the direction close to the second die hole.

Optionally, the conveying mechanism includes a turntable, and the first loading station, the second loading station, the third loading station and the pressing station are distributed around the axis of the turntable; A feeding mechanism, a second feeding mechanism, a third feeding mechanism and a pressing mechanism are arranged on the peripheral side of the turntable and distributed along the circumferential direction of the turntable.

Optionally, the conveying mechanism is further formed with a first heating station, and on the conveying path of the conveying mechanism, the first heating station is located at the first feeding station and the second feeding station Between; the press-bonding equipment also includes a first heating mechanism, the first heating mechanism is set corresponding to the first heating station; the first heating mechanism is used to heat the first electrode on the carrying jig piece.

Optionally, the conveying mechanism is further formed with a second heating station, and on the conveying path of the conveying mechanism, the second heating station is located between the third feeding station and the pressing station The lamination equipment also includes a second heating mechanism, which is set corresponding to the second heating station; the second heating mechanism is used to heat the first electrode sheet on the carrying jig, The diaphragm sheet and the second electrode sheet.

Optionally, the conveying mechanism is further formed with a third heating station, and on the conveying path of the conveying mechanism, the third heating station is located between the second heating station and the pressing station; The pressing equipment also includes a third heating mechanism, which is set corresponding to the third heating station; the third heating mechanism is used to heat the first electrode sheet and the diaphragm on the carrying jig sheet and the second electrode sheet, the heating temperature of the third heating mechanism is higher than the heating temperature of the second heating mechanism.

Optionally, the third heating mechanism includes a fixed frame, an electromagnetic heating coil, and a transmission member; the electromagnetic heating coil is mounted on the fixed frame, and the transmission member is movably mounted on the fixed frame to approach or Away from the electromagnetic heating coil; the carrying fixture is provided with a through hole, and the hole wall of the through hole is provided with a supporting boss, and the supporting boss is used to support the stacked first electrode sheet, diaphragm sheet and second electrode sheet. Two electrode sheets; the transmission member has a first position away from the electromagnetic heating coil, and a second position close to the electromagnetic heating coil, the first position is located below the third heating station, the The electromagnetic heating coil is located above the third heating station; when the carrying jig is transported to the third heating station, the transmission member extends from below the carrying jig into the through hole, and The laminated first electrode sheet, diaphragm sheet and second electrode sheet are pushed out of the through hole and then driven to the second position.

Optionally, the conveying mechanism is also formed with a detection station, and on the conveying path of the conveying mechanism, the detection station is located downstream of the lamination station; the lamination equipment also includes a detection mechanism, The detection mechanism is set corresponding to the detection station; the detection mechanism is used to detect whether the first electrode sheet and the second electrode sheet on the carrying jig are short-circuited.

Optionally, the conveying mechanism is also formed with a blanking station, and on the conveying path of the conveying mechanism, the blanking station is located downstream of the detection station; the pressing equipment also includes a lower A feeding mechanism, the feeding mechanism is set corresponding to the feeding station; the feeding mechanism is used for feeding the battery cap on the carrying jig.

In the pressing equipment of the present invention, the first feeding mechanism, the second feeding mechanism and the third feeding mechanism corresponding to the different stations of the same conveying mechanism will be used to feed the first electrode sheet, the diaphragm sheet and the second electrode sheet respectively. Install, and install the pressing mechanism for pressing the first electrode sheet, the diaphragm sheet and the second electrode sheet corresponding to the conveying mechanism, so that the first electrode sheet, the diaphragm sheet and the second electrode sheet can be placed in the same pressing device The materials are sequentially loaded at different stations, and finally can be pressed to form the battery cap; thus, the positioning, feeding and pressing of the electrode sheet and the diaphragm sheet can be processed by machinery on the same production and processing line, without manual positioning Feeding has a high degree of automation and low labor intensity, which can improve the processing efficiency of battery caps and optimize the integration effect of pressing equipment.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to the structures shown in these drawings without creative effort.

Fig. 1 is a schematic structural view of an embodiment of the pressing equipment of the present invention;

Fig. 2 is a top view of an embodiment of the pressing equipment of the present invention;

Fig. 3 is a top view of an embodiment of the conveying mechanism in the present invention;

Fig. 4 is a schematic structural view of another embodiment of the lamination equipment of the present invention;

Fig. 5 is a schematic top view of another embodiment of the pressing device of the present invention;

Fig. 6 is a schematic structural view of an embodiment of the second feeding mechanism in the present invention;

Fig. 7 is a schematic structural view of an embodiment of the die device in the present invention;

Fig. 8 is a cross-sectional view of an embodiment of the die device in the present invention;

Fig. 9 is a partial enlarged view of place A in Fig. 8;

Figure 10 is a schematic diagram of the process in which the material tape is cut out to remove the diaphragm in the present invention;

Fig. 11 is a schematic structural view of the second cutter in the present invention;

Fig. 12 is a cross-sectional view of the second cutter in the present invention;

Fig. 13 is a structural schematic diagram of an embodiment of the carrying jig, the first electrode sheet, the diaphragm sheet and the second electrode sheet in the present invention;

Fig. 14 is a schematic structural view of an embodiment of the third heating mechanism in the present invention;

Fig. 15 is a schematic structural diagram of an embodiment of the detection mechanism in the present invention.

Explanation of reference numbers:

The realization of the purpose of the present invention, functional characteristics and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

It should be noted that if there is a directional indication (such as up, down, left, right, front, back...) in the embodiment of the present invention, the directional indication is only used to explain the position in a certain posture (as shown in the accompanying drawing). If the specific posture changes, the directional indication will also change accordingly.

In addition, if there are descriptions involving "first", "second" and so on in the embodiments of the present invention, the descriptions of "first", "second" and so on are only for descriptive purposes, and should not be interpreted as indicating or implying Its relative importance or implicitly indicates the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In addition, the meaning of "and/or" appearing in the whole text includes three parallel schemes, taking "A and/or B as an example", including scheme A, scheme B, or schemes satisfying both A and B. In addition, the technical solutions of the various embodiments can be combined with each other, but it must be based on the realization of those skilled in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist , nor within the scope of protection required by the present invention.

During the processing of the battery, the battery cap formed by laminating the electrode sheet and the separator sheet 22 generally needs to be hot pressed to prevent the battery cap from loosening. In the related art, the lamination process and pressing process of the electrode sheet and the separator sheet 22 are usually carried out on different production and processing lines, resulting in poor processing efficiency for the battery cap.

The present invention proposes a pressing device for pressing the electrode sheet and the separator sheet 22 to form a battery cap. Wherein, the electrode sheets include a first electrode sheet 21 and a second electrode sheet 23, one of the first electrode sheet 21 and the second electrode sheet 23 is a positive electrode sheet, and the other is a negative electrode sheet. The separator sheet 22 is disposed between the first electrode sheet 21 and the second electrode sheet 23 .

In the embodiment of the present invention, as shown in Figures 1 to 3, Figure 1 is a schematic structural view of an embodiment of the pressing equipment of the present invention; Figure 2 is a top view of an embodiment of the pressing equipment of the present invention; Figure 3 is a schematic view of the present invention A top view of an embodiment of the middle conveying mechanism 10.

The lamination equipment includes a conveying mechanism 10, a carrying jig 20, a first feeding mechanism 30, a second feeding mechanism 40, a third feeding mechanism 50, and a laminating mechanism 60, and the conveying mechanism 10 is formed with a first feeding mechanism. Position 11, the second loading station 12, the third loading station 13 and pressing station 14. The carrying jig 20 is installed on the conveying mechanism 10 , and the carrying jig 20 is used for carrying the electrode sheet and the diaphragm sheet 22 . The conveying mechanism 10 is used to convey the carrying jig 20 from the first loading station 11 to the second loading station 12 , the third loading station 13 and the pressing station 14 in sequence. The first loading mechanism 30 is provided corresponding to the first loading station 11 , and the first loading mechanism 30 is used for loading the first electrode sheet 21 to the carrying jig 20 . The second loading mechanism 40 is provided corresponding to the second loading station 12 , and the second loading mechanism 40 is used for loading the diaphragm 22 onto the carrier jig 20 to stack the diaphragm 22 on the first electrode sheet 21 . The third feeding mechanism 50 is arranged corresponding to the third feeding station 13, and the third feeding mechanism 50 is used for feeding the second electrode sheet 23 to the carrier jig 20, so that the second electrode sheet 23 is stacked on the diaphragm sheet 22 superior. The pressing mechanism 60 is provided corresponding to the pressing station 14 , and the pressing mechanism 60 is used for pressing the first electrode sheet 21 , the diaphragm sheet 22 and the second electrode sheet 23 stacked on the carrying jig 20 to form a battery cap.

In this embodiment, the conveying mechanism 10 includes a carrying platform, and the first loading station 11, the second loading station 12, the third loading station 13 and the pressing station 14 are arranged on the carrying surface of the carrying platform . When the conveying mechanism 10 transports the carrying jig 20, the carrying jig 20 can be picked up from one station by the mechanical arm and then put to the next station, or the carrying jig 20 can be conveyed by the movement of the carrying platform itself, There is no limitation here.

The carrying jig 20 is used to carry the first electrode sheet 21 , the separator sheet 22 and the second electrode sheet 23 to be pressed together, and the battery cap formed after pressing. It can be understood that the first loading station 11, the second loading station 12, the third loading station 13 and the press-fitting station 14 can all place a carrying jig 20 correspondingly, so that each time the conveying mechanism 10 carries out When conveying, it can be guaranteed that each station has a carrying jig 20, so that the processing mechanism corresponding to each station can work simultaneously without waiting.

The first feeding mechanism 30 comprises a vibrating type preparation device and a material taking module, and the retrieving module can move back and forth between the vibrating type material preparation device and the first loading station 11, and the reclaiming module is used to prepare materials from the vibrating type The device picks up the first electrode sheet 21 and transports it to the carrying jig 20 located on the first loading station 11 . The vibrating material preparation device can prevent the stacking of the first electrode sheets 21 in the loading area by vibrating, so as to prevent the picking module from taking and placing the stacked first electrode sheets 21 on the carrying jig 20 . In addition, the vibration-type material preparation device is also provided with a sensor, the sensor is used to detect the forward and reverse of the first electrode sheet 21, and the reversed first electrode sheet 21 is blown down to the upstream of the feeding area, so as to ensure the correctness of the first electrode sheet 21. The pressing surface faces upwards to improve the feeding accuracy of the first electrode sheet 21 .

After the carrying jig 20 is received by the first electrode sheet 21 at the first loading station 11 , the conveying mechanism 10 transports the carrying jig 20 to the second loading station 12 . The second feeding mechanism 40 stacks the diaphragm sheet 22 on the first electrode sheet 21 . The diaphragm 22 can be circular or annular. The diaphragm 22 may be pre-processed and then placed on the second feeding mechanism 40, or it may be processed immediately by the second feeding mechanism 40, which is not limited here.

After the carrying jig 20 is received by the diaphragm 22 at the second loading station 12 , the conveying mechanism 10 transports the carrying jig 20 to the third loading station 13 . The 3rd feeding mechanism 50 comprises vibratory type preparation device and material taking module, and reclaiming module can move back and forth between vibratory type material preparation device and the 3rd loading station 13, and retrieving module is in order to prepare material from vibratory type. The device absorbs the second electrode sheet 23 and transports it to be stacked on the diaphragm sheet 22 . The vibrating material preparation device can prevent the stacking of the second electrode sheets 23 in the feeding area by vibrating, so as to prevent the picking module from taking and placing the stacked second electrode sheets 23 on the carrying jig 20 . In addition, the vibration type material preparation device is also provided with a sensor, and the sensor is used to detect the forward and reverse of the second electrode sheet 23, and the reverse second electrode sheet 23 is blown down to the upstream of the feeding area, thereby ensuring the second electrode sheet 23 The pressing surface faces downwards to improve the feeding accuracy of the second electrode sheet 23 .

After the carrying jig 20 is received by the second electrode sheet 23 at the third loading station 13 , the conveying mechanism 10 transports the carrying jig 20 to the pressing station 14 . The pressing mechanism 60 includes a pressing member, which can apply pressure to the laminated first electrode sheet 21, diaphragm sheet 22 and second electrode sheet 23 from one side of the second electrode sheet 23; 21 and one side of the second electrode sheet 23 to apply pressure bidirectionally; there is no limitation here, as long as the pressing mechanism 60 can stack the first electrode sheet 21, diaphragm 22 and second electrode sheet 23 Press to form the battery cap.

In order to ensure the pressing effect, in some embodiments of the present application, the pressing piece is made of an electric heating element, which is heated while applying pressure to the first electrode piece 21 , the diaphragm piece 22 and the second electrode piece 23 .

In the pressing equipment of the present invention, the first feeding mechanism 30, the second feeding mechanism 40 and the third feeding mechanism 50 corresponding to the same The different stations of the conveying mechanism 10 are installed, and the pressing mechanism 60 for pressing the first electrode sheet 21, the diaphragm sheet 22 and the second electrode sheet 23 is also installed corresponding to the conveying mechanism 10, so that the first electrode sheet 21, the diaphragm The sheet 22 and the second electrode sheet 23 can be sequentially loaded and positioned at different stations of the same pressing device, and finally pressed to form a battery cap. Thus, the positioning feeding and pressing of the electrode sheet and the diaphragm sheet 22 can be concentrated on the same production and processing line and processed by machinery, without manual positioning and feeding, with a high degree of automation and low labor intensity, which can improve the battery cap. Improve processing efficiency and optimize the integration effect of pressing equipment.

Exemplary, as shown in Figure 6 to Figure 12, Figure 6 is a schematic structural view of an embodiment of the second feeding mechanism 40 in the present invention; Figure 7 is a structural schematic view of an embodiment of the die device in the present invention; Figure 8 is A cross-sectional view of an embodiment of the die device in the present invention; FIG. 9 is a partial enlarged view of A in FIG. 8; FIG. 10 is a schematic diagram of the process in which the material belt 220 is cut out of the diaphragm 22 in the present invention; FIG. 11 is the first in the present invention Schematic diagram of the structure of the second cutter 44; FIG. 12 is a cross-sectional view of the second cutter 44 in the present invention.

The second feeding mechanism 40 comprises a punching device, and the punching device includes a punching die 401 and a coiling mechanism; the punching die 401 includes a support table 41, a briquetting block 42, a die cutter and a vacuum mechanism; the support table 41 has a support surface 411, and a support surface 411 A first die hole 412 and a second die hole 413 are opened.

The pressing block 42 is movably installed on the supporting table 41 and is located on one side of the supporting surface 411 so as to be close to or away from the supporting surface 411. The first die hole 412 and the second die hole 413 are covered. Die cutter comprises first cutter 43 and second cutter 44, and the cutting area of second cutter 44 is larger than the cutting area of first cutter 43, and first cutter 43 is movably installed on supporting platform 41 and with first die hole 412 The second tool 44 is movably mounted on the support table 41 and is opposite to the second die hole 413 so as to enter or exit the second die hole 413 .

The first cutter 43 is used to cut out the hollow area 221 from the material strip 220 when extending into the first die hole 412, and the second cutter 44 is used to extend the hollow area 221 when the projection of the hollow area 221 falls into the second die hole 413. Enter the second die hole 413 to cut the diaphragm 22 from the periphery of the hollowed out area 221 of the material strip 220. The second cutter 44 is provided with a connected air passage 441 and an air passage 442. The air passage 441 is located in the second cutter 44. blade end.

The vacuum mechanism is installed on the supporting table 41, and the air passage 442 communicates with the vacuum port of the vacuum mechanism, and the vacuum mechanism is used to adjust the vacuum degree of the air passage 442. The winding mechanism includes an unwinding assembly 46 and a winding assembly 47. The unwinding assembly 46 is used for unwinding the material tape 220 before being cut, and the winding assembly 47 is used for winding the remaining material of the material tape 220 after being cut. The supporting platform 41 is located on the material-traveling path of the material belt 220 so that the material belt 220 passes the supporting surface 411 .

In this embodiment, the support surface 411 may be the top surface of the support platform 41 or the side surface of the support platform 41 , and this embodiment takes the support surface 411 as the top surface of the support platform 41 as an example. The material strip 220 can move along the support surface 411, and the first die hole 412 and the second die hole 413 are arranged along the moving direction of the material strip 220, that is, the material strip 220 first passes through the first die hole 412 and then passes through the support surface 411 when moving along the support surface 411. The second die hole 413 . The moving direction of the pressing block 42 is perpendicular to the supporting surface 411 , for example, the pressing block 42 is installed above the supporting surface 411 and can move up and down in the vertical direction. When the pressing block 42 abuts against the supporting surface 411 , the material strip 220 can be pressed and fixed, and when the pressing block 42 leaves the supporting surface 411 , the material strip 220 can be loosened. The stamping die 401 also includes a first driving device installed on the support table 41 , the first driving device is used to drive the pressing block 42 to move, so that the pressing block 42 can automatically press or release the material strip 220 .

The first cutter 43 and the second cutter 44 are installed above the supporting surface 411 and can move up and down along the axial direction of the first die hole 412 and the second die hole 413 . The first cutter 43 and the second cutter 44 are columnarly arranged, and the blade of the first cutter 43 is arranged on the periphery of the first cutter 43 end faces, and the blade of the second cutter 44 is arranged on the periphery of the second cutter 44 end faces, and the second cutter The end surface of 44 is larger than the end surface of the first cutter 43 , so the cutting range of the second cutter 44 is larger than that of the first cutter 43 . The stamping die 401 also includes a second driving device installed on the support table 41 , the second driving device is used to drive the first knife 43 and the second knife 44 to move, so that the first knife 43 and the second knife 44 cut the strip 220 .

The air passage 442 can extend along the axial direction of the second cutter 44 and pass through an end of the second cutter 44 away from its cutting edge. The vacuum of the vacuum mechanism communicates with the air passage 442 through the top of the second cutter 44, and the vacuum mechanism can generate negative pressure at the air passage 441 by adjusting the vacuum degree of the air passage 442, so that it can absorb the material cut by the second cutter 44. Cut out the diaphragm piece 22 . The quantity of air passage 441 can be multiple, and a plurality of air passages 441 are arranged at intervals along the circumferential direction of the second cutter 44, and the quantity and position of air passage 442 correspond to air passage 441, and the air outlet of vacuum mechanism is connected with a plurality of passages simultaneously. The air channel 442 is connected; in this way, the adsorption positions for the diaphragm 22 can be increased to improve the adsorption stability of the diaphragm 22 .

When the stamping die 401 was working, the strip 220 first passed through the first punch hole 412, and when the strip 220 covered the first punch hole 412, the briquetting block 42 descended to press the strip 220, so as to ensure that the strip 220 would not be affected by the force of the stamping tool. will deform. After the pressing block 42 presses the material belt 220 , the first cutter 43 extends into the first die hole 412 and pierces the material belt 220 , so as to cut off scraps from the material belt 220 . In this way, the hollow area 221 can be cut out on the material tape 220 by the first cutter 43 first.

After the strip 220 is cut out of the hollow area 221 , the first cutter 43 exits the first die hole 412 , the pressing block 42 releases the strip 220 , and the strip 220 continues to move toward the second die hole 413 . When the material strip 220 moved to make its hollowed out area 221 in the projection of the second die hole 413, the briquetting block 42 pressed the material strip 220 again. The ring-shaped diaphragm 22 is cut out from the periphery of the hollowed-out area 221 on the top 220 .

After the second cutter 44 cuts the diaphragm 22, the vacuum mechanism is opened to increase the vacuum degree of the passage 442. At this time, the air passage 441 generates a negative pressure on the diaphragm 22, so that the diaphragm 22 can be adsorbed and fixed on the second cutter. 44 on.

It should be noted that the second loading station 12 is located below the second die hole 413. After the diaphragm 22 is adsorbed and fixed, the carrying jig 20 carrying the first electrode sheet 21 comes to the second loading station 12. At this time, the vacuum mechanism is closed, and the diaphragm 22 can directly fall on the first electrode sheet 21, so that the diaphragm 22 just cut can be directly used for pressing.

The number of the first die holes 412 and the second die holes 413 may be multiple, and the multiple first die holes 412 and the second die holes 413 are arranged along the moving direction of the strip 220 . The number and position of the first cutter 43 and the second cutter 44 correspond to the first die hole 412 and the second die hole 413 respectively. In this way, a plurality of first knives 43 can move simultaneously, and cut out a plurality of hollow areas 221 from the material strip 220 at one time; A plurality of diaphragm sheets 22 are produced. It can be understood that the plurality of second cutters 44 are provided with corresponding air passages 441 and air passages 442 , and the vacuum mechanism can communicate with the air passages 442 of the plurality of second cutters 44 at the same time.

The air hole 441 and the air passage 442 are set in the second cutter 44, and the vacuum degree of the air passage 442 is adjusted by a vacuum mechanism, so that after the second cutter 44 cuts off the diaphragm sheet 22 from the material tape 220, the vacuum mechanism passes Increasing the vacuum degree of the air passage 442 can make the air hole 441 absorb the diaphragm 22, thereby adsorbing and positioning the diaphragm 22 on the second cutter 44, and the adsorbed and positioned diaphragm 22 can be directly transferred to the battery cap The pressing process of the battery cap is put into the production line (for example, it is directly laminated on the prepared electrode sheet). In this way, in the process of pressing the battery cap, the diaphragm 22 can be cut and used immediately, without pre-processing, and without re-loading and positioning, thereby improving the production efficiency of the battery cap.

The coiling mechanism can unwind and rewind the material tape 220, so that the material tape 220 can automatically pass through the first die hole 412 and the second die hole 413, and the material tape 220 can be cut and processed before being cut. It can be effectively stored and organized after cutting.

When the carrying jig 20 comes to the second loading station 12, the second cutter 44 may be lowered to make the diaphragm 22 approach the first electrode sheet 21, or the carrying jig 20 may be raised to make the first electrode sheet 21 approach Diaphragm 22.

Exemplarily, as shown in FIGS. 7 to 9 , the second loading mechanism 40 further includes a lifting mechanism 45 , which can be lifted and installed below the stamping die 401 . The lifting mechanism 45 is used to lift the carrying jig 20 or the first electrode piece 21 toward the direction close to the second die hole 413 when the carrying jig 20 is transported to the second loading station 12 .

After the second cutter 44 cuts off the diaphragm sheet 22 from the material belt 220 and absorbs it, the lifting mechanism 45 lifts the carrying jig 20 or the first electrode sheet 21 at the second loading station 12 to make the first electrode The sheet 21 can be as close to the diaphragm sheet 22 as possible. After the first electrode sheet 21 is close to the diaphragm sheet 22, the vacuum mechanism reduces the vacuum degree of the air passage 442, so that the second cutter 44 loosens the diaphragm sheet 22, so that the diaphragm sheet 22 can fall on the first electrode sheet 21 under the action of gravity . Because the first electrode sheet 21 is close to the second cutter 44, the diaphragm sheet 22 can fall on the first electrode sheet 21 more quickly, reducing the shaking in the horizontal direction, thereby ensuring the gap between the diaphragm sheet 22 and the first electrode sheet 21. coaxiality.

Specifically, the lifting mechanism 45 may include a lifting rod 451, and the carrying jig 20 is provided with a through hole 24, and the hole wall of the through hole 24 is protruded with a supporting boss 25, and the supporting boss 25 is used to support the stacked first electrode sheet 21. , the diaphragm sheet 22 and the second electrode sheet 23. The lifting rod 451 can pass through the through hole 24 to lift up the first electrode piece 21 , so that the lifting jig 20 does not need to be lifted up, so as to reduce the load of the lifting mechanism 45 .

The conveying path of the conveying mechanism 10 to the carrying jig 20 may be a straight line or a curve.

Exemplarily, as shown in FIG. 3 , the conveying mechanism 10 includes a turntable, and the first loading station 11, the second loading station 12, the third loading station 13 and the pressing station 14 surround the axis of the turntable Distribution, the first feeding mechanism 30, the second feeding mechanism 40, the third feeding mechanism 50 and the pressing mechanism 60 are arranged on the peripheral side of the turntable and distributed along the circumferential direction of the turntable. The conveying mechanism 10 is arranged in the form of a circular turntable, which can make the structure more compact and reduce the occupied area.

The first loading station 11 , the second loading station 12 , the third loading station 13 and the pressing station 14 are distributed on the periphery of the turntable. The turntable is rotatable to realize switching of the carrying jig 20 among various stations. After the turntable rotates one week, the carrying jig 20 returns to the first loading station 11 again, so that the carrying jig 20 is returned from the pressing station 14 to the first loading station 11 without other mechanisms to increase the pressure. Combined equipment work efficiency. The setting of the turntable can reduce the total delivery range of the bearing jig 20, making the structure of the lamination equipment more compact, thereby reducing the overall space occupied by the lamination equipment. On the other hand, the lamination equipment can be integrated in a box for transportation.

Exemplarily, as shown in FIG. 4 and FIG. 5 , the conveying mechanism 10 is also formed with a first heating station 15. On the conveying path of the conveying mechanism 10, the first heating station 15 is located between the first feeding station 11 and the Between the second feeding station 12. The pressing equipment also includes a first heating mechanism 70, the first heating mechanism 70 is set corresponding to the first heating station 15, and the first heating mechanism 70 is used to heat the first heating mechanism 20 on the carrying jig 20. An electrode sheet 21.

After the loading of the first electrode sheet 21 is completed, the carrying jig 20 is transported from the first loading station 11 to the first heating station 15 , and then from the first heating station 15 to the second loading station 12 . The first heating mechanism 70 includes an electric heating element, and the electric heating element heats the first electrode sheet 21 by contacting or approaching the first electrode sheet 21 . After the first electrode sheet 21 is heated, when the diaphragm sheet 22 is stacked on the first electrode sheet 21, the diaphragm sheet 22 can be preliminarily thermally attached to the first electrode sheet 21 by the heat of the first electrode sheet 21, thereby improving the performance of the first electrode sheet 21. The stacking stability of an electrode sheet 21 and the diaphragm sheet 22 is improved, and the subsequent lamination effect is improved.

In some embodiments of the present application, the lifting mechanism 45 and the first heating mechanism 70 are integrated, and at this time, the electric heating element is directly set as the lifting rod 451 . The integral arrangement of the lifting mechanism 45 and the first heating mechanism 70 can reduce the heat loss of the first electrode piece 21 , save space, and make the structure more compact and reasonable.

Exemplarily, as shown in FIG. 4 and FIG. 5 , the conveying mechanism 10 is also formed with a second heating station 16. On the conveying path of the conveying mechanism 10, the second heating station 16 is located between the third feeding station 13 and the Between the pressing stations 14, the pressing equipment further includes a second heating mechanism 80, the second heating mechanism 80 is set corresponding to the second heating station 16, and the second heating mechanism 80 is used to heat the first electrode on the carrying jig 20 Sheet 21, diaphragm sheet 22 and second electrode sheet 23.

After the second electrode sheet 23 is loaded, the carrier jig 20 is transported from the third loading station 13 to the second heating station 16 , and then from the second heating station 16 to the pressing station 14 . The second heating mechanism 80 includes an electric heating element, which heats the first electrode sheet 21 and the second electrode sheet 23 by contacting or approaching at least one of the first electrode sheet 21 and the second electrode sheet 23 . After the first electrode sheet 21 and the second electrode sheet 23 are heated, the diaphragm sheet 22 located between the first electrode sheet 21 and the second electrode sheet 23 is also heated, so that the subsequent pressing effect can be improved.

Exemplarily, as shown in FIG. 4 and FIG. 5 , the conveying mechanism 10 is also formed with a third heating station 17, and on the conveying path of the conveying mechanism 10, the third heating station 17 is located between the second heating station 16 and the press Between 14 joint stations. The press-bonding equipment further includes a third heating mechanism 90 , and the third heating mechanism 90 is arranged corresponding to the third heating station 17 . The third heating mechanism 90 is used for heating the first electrode sheet 21 , the diaphragm sheet 22 and the second electrode sheet 23 on the carrying jig 20 , and the heating temperature of the third heating mechanism 90 is higher than that of the second heating mechanism 80 .

After the second heating mechanism 80 finishes heating the laminated first electrode sheet 21, diaphragm sheet 22, and second electrode sheet 23, the carrier jig 20 is transported from the second heating station 16 to the third heating station 17, and then from the second heating station 16 to the third heating station 17. The third heating station 17 is delivered to the pressing station 14 . The third heating mechanism 90 may heat the first electrode sheet 21 and the second electrode sheet 23 by contacting or approaching at least one of the first electrode sheet 21 and the second electrode sheet 23 . Because the heating temperature of the first electrode sheet 21, the diaphragm sheet 22 and the second electrode sheet 23 by the third heating mechanism 90 is relatively high, the diaphragm sheet 22 can be thermally fused, and the diaphragm sheet 22 after thermal melting can be bonded at the same time. The first electrode sheet 21 and the second electrode sheet 23, so that the first electrode sheet 21, the diaphragm sheet 22 and the second electrode sheet 23 are more easily fixed by pressing.

Specifically, as shown in Figure 13 and Figure 14, Figure 13 is a schematic structural view of an embodiment of the carrying fixture 20, the first electrode sheet 21, the diaphragm sheet 22 and the second electrode sheet 23 in the present invention; A schematic structural diagram of an embodiment of the third heating mechanism 90.

The third heating mechanism 90 includes a fixed frame 91 , an electromagnetic heating coil 92 and a transmission member 93 ; The carrying jig 20 is provided with a through hole 24 , and a support boss 25 protrudes from the wall of the through hole 24 . The support boss 25 is used to support the stacked first electrode sheet 21 , diaphragm sheet 22 and second electrode sheet 23 .

The transmission member 93 has a first position away from the electromagnetic heating coil 92 and a second position close to the electromagnetic heating coil 92. The first position is located below the third heating station 17, and the electromagnetic heating coil 92 is located at the third heating station 17. above. When the carrying jig 20 is transported to the third heating station 17, the transmission member 93 extends into the through hole 24 from below the carrying jig 20, and ejects the stacked first electrode sheet 21, diaphragm sheet 22 and second electrode sheet 23. The through hole 24 is then actuated to the second position.

The electromagnetic heating coil 92 heats the first electrode sheet 21, the diaphragm sheet 22 and the second electrode sheet 23 through the principle of electromagnetic induction, and this heating method can quickly heat the first electrode sheet 21, the diaphragm sheet 22 and the second electrode sheet 23 Heat to a higher temperature to increase heating efficiency. On the other hand, during actual processing and production, a high-frequency current can be applied to the electromagnetic heating coil 92, so that the heating tends to the surfaces of the first electrode sheet 21 and the second electrode sheet 23, thereby rapidly melting the surface of the diaphragm sheet 22, so that the first The electrode sheet 21 , the separator sheet 22 and the second electrode sheet 23 are bonded quickly, and the energy conversion rate is high.

The electromagnetic heating coil 92 surrounds a heating area, and the second position is located in the heating area of the electromagnetic heating coil 92 . When the carrying jig 20 is transported to the third heating station 17, the transmission member 93 passes through the through hole 24 to lift the stacked first electrode sheet 21, diaphragm sheet 22 and second electrode sheet 23 to the heating area of the electromagnetic heating coil 92 , at this time, the electromagnetic heating coil 92 is energized to rapidly heat the first electrode sheet 21 , the diaphragm sheet 22 and the second electrode sheet 23 . After the heating is finished, the transmission member 93 is lowered back to the first position, so as to return the first electrode sheet 21 , the diaphragm sheet 22 and the second electrode sheet 23 to the carrying jig 20 .

The first electrode sheet 21, the diaphragm sheet 22, and the second electrode sheet 23 are transferred to the heating area of the electromagnetic heating coil 92 through the transmission member 93, which can avoid the heat of the carrying fixture 20, thereby reducing the heat of the third heating mechanism 90 losses and improve efficiency.

In practical applications, the third heating mechanism 90 may further include a positioning member 94 fixed above the second position and close to the electromagnetic heating coil 92 . When the transmission member 93 lifts the first electrode sheet 21, the diaphragm sheet 22 and the second electrode sheet 23, it is holding the lowermost first electrode sheet 21, and the first electrode sheet 21, the diaphragm sheet 22 and the second electrode sheet 23 reach After the second position, the positioning member 94 abuts against the uppermost second electrode sheet 23, so as to cooperate with the transmission member 93 to clamp the first electrode sheet 21, the diaphragm sheet 22 and the second electrode sheet 23 at the second position, so that The stability when the first electrode sheet 21 , the diaphragm sheet 22 and the second electrode sheet 23 are in the heating area of the electromagnetic heating coil 92 is improved.

The third heating mechanism 90 also includes a cooling assembly. The cooling assembly is arranged on the fixed frame 91. The cooling assembly includes a gas drive device and an air nozzle. The cooling assembly is used to cool the battery cap by blowing air after the third heating mechanism 90 finishes heating to prevent the diaphragm 22 melted at high temperature and caused a local short circuit.

In some embodiments of the present application, the transmission member 93 and the third heating mechanism 90 are integrated, and at this time the transmission member 93 is directly configured as an electric heating member. The integral arrangement of the transmission member 93 and the third heating mechanism 90 can reduce the heat loss of the first electrode sheet 21 , the diaphragm sheet 22 and the second electrode sheet 23 , save space, and make the structure more compact and reasonable.

Exemplarily, as shown in FIG. 4 and FIG. 5 , the conveying mechanism 10 is also formed with a detection station 18. On the conveying path of the conveying mechanism 10, the detection station 18 is located downstream of the pressing station 14, and the pressing equipment also A detection mechanism 100 is included, and the detection mechanism 100 is provided corresponding to the detection station 18 to detect whether the first electrode sheet 21 and the second electrode sheet 23 on the carrying jig 20 are short-circuited.

After the first electrode sheet 21 , the separator sheet 22 and the second electrode sheet 23 are pressed together by the pressing mechanism 60 at the pressing station 14 to form a battery cap, the carrying jig 20 is transported to the testing station 18 to detect the battery cap. In this way, short-circuit defective products can be screened out before blanking, and there is no need to check after blanking, thereby further improving the efficiency of automatic processing of battery caps.

Specifically, as shown in FIG. 15 , FIG. 15 is a schematic structural diagram of an embodiment of a detection mechanism 100 in the present invention. The carrying jig 20 is provided with a through hole 24 , and a support boss 25 protrudes from the wall of the through hole 24 . The support boss 25 is used to support the stacked first electrode sheet 21 , diaphragm sheet 22 and second electrode sheet 23 . The detection mechanism 100 includes a first detection electrode 101 and a second detection electrode 102, the first detection electrode 101 is located below the detection station 18, the second detection electrode 102 is located above the detection station 18, the first detection electrode 101 and the second detection electrode 101 The detection electrodes 102 may be close to each other or far away from each other. When the carrier jig 20 is transported to the detection station 18 , the first detection electrode 101 and the second detection electrode 102 are close to each other to abut against the first electrode sheet 21 and the second electrode sheet 23 respectively.

After the carrying jig 20 is transported to the detection station 18, the first detection electrode 101 extends into the through hole 24 and abuts against the first electrode sheet 21, and the second detection electrode 102 abuts against the second electrode sheet 23. The first detection electrode 101 and the second detection electrode 102 apply a voltage. If the first detection electrode 101 and the second detection electrode 102 generate current through the battery cap, it means that the battery cap is short-circuited, otherwise, the battery cap is detected to be qualified.

Exemplarily, as shown in Figure 4 and Figure 5, the conveying mechanism 10 is also formed with a blanking station 19, on the conveying path of the conveying mechanism 10, the blanking station 19 is located downstream of the detection station 18, and the pressing The equipment also includes a blanking mechanism 200 , which is set corresponding to the blanking station 19 , and the blanking mechanism 200 is used for blanking the battery cap on the carrying jig 20 .

The unloading mechanism 200 includes a material receiving part and a reclaiming module, the reclaiming module can move back and forth between the receiving part and the unloading station 19, and the reclaiming module uses the carrying jig 20 on the unloading station 19 The battery cap is sucked in the middle and then transported to the material receiving part to realize automatic blanking of the battery cap, and the unloading mechanism 200 can classify and place qualified products and defective products according to the detection results of the detection mechanism 100 .

Specifically, the pressing equipment also includes an installation box, the conveying mechanism 10, the first feeding mechanism 30, the second feeding mechanism 40, the third feeding mechanism 50 and the pressing mechanism 60 are all installed in the installation box, and the installation box The bottom has casters. The installation box can accommodate the main mechanism of the pressing equipment, and then use the casters to realize the transportation and transfer of the installation box, so as to facilitate the transfer of the whole pressing equipment. The side wall of the installation box is equipped with a display screen for real-time display of the temperature of the heating element of the first heating mechanism 70, the second heating mechanism 80 and the pressing mechanism, so as to monitor the heating situation in real time.

The above are only optional embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Under the inventive concept of the present invention, the equivalent structural transformation made by using the description of the present invention and the contents of the accompanying drawings, or directly/indirectly used in Other relevant technical fields are included in the patent protection scope of the present invention.

Claims (10)

1. A pressing device, used for pressing electrode sheet and diaphragm, is characterized in that, described pressing device comprises: A conveying mechanism, the conveying mechanism is formed with a first feeding station, a second feeding station, a third feeding station and a pressing station; A carrying jig, the carrying jig is installed on the conveying mechanism, and the carrying jig is used to carry the electrode sheet and the diaphragm sheet; the conveying mechanism is used to transfer the carrying jig from the first loading tool The positions are sequentially transported to the second loading station, the third loading station and the pressing station; a first feeding mechanism, the first feeding mechanism is set corresponding to the first feeding station, and the first feeding mechanism is used to feed the first electrode sheet to the carrying jig; The second feeding mechanism, the second feeding mechanism is set corresponding to the second feeding station, and the second feeding mechanism is used to feed the diaphragm sheet to the carrying jig, so as to place the diaphragm sheet laminated on the first electrode sheet; The third feeding mechanism, the third feeding mechanism is set corresponding to the third feeding station, and the third feeding mechanism is used for feeding the second electrode sheet to the carrying jig, so as to place the The second electrode sheet is laminated on the diaphragm sheet; A press-fit mechanism, the press-fit mechanism is set corresponding to the press-fit station, and the press-fit mechanism is used to press-fit the first electrode sheet, diaphragm sheet and second electrode sheet stacked on the carrying jig to form a battery cap. 2. The pressing equipment according to claim 1, wherein the second feeding mechanism comprises a stamping device, and the stamping device comprises a stamping die and a coiling mechanism; The stamping die includes a support table, a briquetting block, a die cutter and a vacuum mechanism; The support table has a support surface, and the support surface is provided with a first die hole and a second die hole; The pressing block is movably installed on the supporting table and is located on one side of the supporting surface so as to approach or move away from the supporting surface; the pressing block is used to press and fix the material strip on the supporting surface on, so that the strip covers the first die hole and the second die hole; The die cutter includes a first cutter and a second cutter, and the cutting area of the second cutter is larger than that of the first cutter; the first cutter is movably installed on the support table and connected with the The first die hole is arranged opposite to the first die hole, so as to enter or withdraw from the first die hole; the second tool is movably mounted on the support table and arranged opposite to the second die hole, so as to enter or exit said second die hole; The first cutter is used to cut out the hollow area from the material strip when extending into the first die hole; the second cutter is used to drop the hollow area into the projection of the second die hole , extending into the second die hole to cut the diaphragm sheet from the periphery of the hollowed-out area of the strip; The second cutter is provided with a connected air hole and an air channel, and the air hole is arranged at the blade end of the second cutter; The vacuum mechanism is installed on the support platform, the air passage is communicated with the vacuum port of the vacuum mechanism, and the vacuum mechanism is used to adjust the vacuum degree of the air passage; The coiling mechanism includes an unwinding assembly and a winding assembly, the unwinding assembly is used to unwind the tape before being cut, and the winding assembly is used to wind up the remaining tape after being cut; The support table is located on the material belt's running path, so that the material belt passes through the support surface. 3. The lamination equipment according to claim 2, wherein the second feeding mechanism further comprises a lifting mechanism, and the lifting mechanism is installed below the stamping die in a liftable manner; the lifting mechanism is used for When the carrying jig is transported to the second loading station, the carrying jig or the first electrode sheet is lifted toward the direction close to the second die hole. 4. The pressing equipment according to claim 1, wherein the conveying mechanism comprises a turntable, and the first feeding station, the second feeding station, the third feeding station and the pressing station The positions are distributed around the axis of the turntable; the first feeding mechanism, the second feeding mechanism, the third feeding mechanism and the pressing mechanism are arranged on the peripheral side of the turntable, and along the circumferential direction of the turntable distributed. 5. The pressing equipment according to claim 1, wherein the conveying mechanism is further formed with a first heating station, and on the conveying path of the conveying mechanism, the first heating station is located at the Between the first feeding station and the second feeding station; the pressing equipment also includes a first heating mechanism, the first heating mechanism is set corresponding to the first heating station; the first heating mechanism It is used for heating the first electrode sheet on the carrying jig. 6. The pressing equipment according to any one of claims 1 to 5, characterized in that, the conveying mechanism is further formed with a second heating station, and on the conveying path of the conveying mechanism, the second The heating station is located between the third feeding station and the pressing station; the pressing equipment also includes a second heating mechanism, and the second heating mechanism is set corresponding to the second heating station; the The second heating mechanism is used for heating the first electrode sheet, the diaphragm sheet and the second electrode sheet on the carrying jig. 7. The pressing equipment according to claim 6, characterized in that, the conveying mechanism is also formed with a third heating station, and on the conveying path of the conveying mechanism, the third heating station is located at the Between the second heating station and the pressing station; the pressing equipment also includes a third heating mechanism, which is set corresponding to the third heating station; the third heating mechanism is used for heating The first electrode sheet, the diaphragm sheet and the second electrode sheet on the carrying jig, the heating temperature of the third heating mechanism is higher than the heating temperature of the second heating mechanism. 8. The pressing equipment according to claim 7, wherein the third heating mechanism comprises a fixed frame, an electromagnetic heating coil and a transmission member; the electromagnetic heating coil is installed on the fixed frame, and the transmission member movably mounted on the fixed frame, so as to be close to or away from the electromagnetic heating coil; The carrying fixture is provided with a through hole, and the hole wall of the through hole is protruded with a supporting boss, and the supporting boss is used to support the stacked first electrode sheet, diaphragm sheet and second electrode sheet; The transmission member has a first position away from the electromagnetic heating coil and a second position close to the electromagnetic heating coil, the first position is located below the third heating station, and the electromagnetic heating coil is located above the third heating station; When the carrying jig is transported to the third heating station, the transmission member extends from below the carrying jig into the through hole, and transfers the laminated first electrode sheet, diaphragm sheet, and second electrode sheet Drive to the second position after ejecting the through hole. 9. The pressing equipment according to claim 1, characterized in that, the conveying mechanism is also formed with a detection station, and on the conveying path of the conveying mechanism, the detection station is located at the pressing station downstream; the lamination equipment also includes a detection mechanism, which is set corresponding to the detection station; the detection mechanism is used to detect whether the first electrode sheet and the second electrode sheet on the carrying jig are short-circuited . 10. The pressing equipment according to claim 9, characterized in that, the conveying mechanism is also formed with a blanking station, and on the conveying path of the conveying mechanism, the blanking station is located at the detection Downstream of the station; the pressing equipment also includes a blanking mechanism, which is set corresponding to the blanking station; the blanking mechanism is used to blank the battery cap on the carrying jig.

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