A lithium battery conductive sheet forming system and forming process

Abstract

The present invention discloses a lithium battery conductive sheet forming system and forming process, specifically relates to the field of conductive sheet forming technology, including a base, a supporting device, a forming device and a hot pressing device, the supporting device is used to support the material strip to reduce the fluctuation of the material strip, the forming device is used to stamp the material strip into a conductive sheet, the forming device includes a bottom plate, a lower mold and an upper mold arranged in sequence from bottom to top, the lower mold includes a lower mold plate, and a stopper and a fixed block are respectively fixed on the front and rear sides of the bottom of the lower mold plate, a conveying cavity for the lower film to pass through is formed between the fixed block and the stopper, a material conveying assembly is provided in the fixed block, the supporting device includes a lifting frame fixed to the top of the base and a dust-free cloth fixed to the top of the lifting frame, the lifting frame is arranged at the bottom of the material strip to support the material strip, and the dust-free cloth covers the top of the material strip for stabilizing and cleaning the material strip. The present invention prevents the material strip from fluctuating, thereby preventing the position of the material strip from shifting, and improving the forming quality of the conductive sheet.

Description

Technical Field

[0001] The present invention relates to the technical field of conductive sheet forming, and in particular to a conductive sheet forming system and a forming process for a lithium battery. Background Art

[0002] Lithium battery conductive sheets are used to transmit current between batteries and ensure the output power and energy storage of battery packs. Conductive sheets are generally made of copper, silver, nickel, etc. Nickel sheets are the preferred material for battery conductive connectors due to their good chemical stability, conductivity and corrosion resistance, especially in high-power battery packs.

[0003] When processing the conductive sheet, the material strip is first fed into the forming mold, the mold punches the material strip into a conductive sheet, and the formed conductive sheet is successively wrapped with tape. However, in actual use, after the material strip enters the mold, the pressure applied to the material strip during the mold punching causes the material strip to fluctuate, and the fluctuation is then transmitted to the entire material strip, which can easily cause the material strip at the feed end to fluctuate and shift. The shift in the position of the material strip directly affects a series of subsequent operations, such as affecting the forming quality of the conductive sheet, and causing the formed conductive sheet to shift on the packaging tape, affecting the packaging quality, etc. Summary of the invention

[0004] The purpose of the present invention is to provide a lithium battery conductive sheet forming system and forming process to solve the problem that the material strip is prone to fluctuation and deviation during the current lithium battery conductive sheet forming process.

[0005] In order to achieve the above-mentioned object, the present invention provides the following technical solutions: a lithium battery conductive sheet forming system, comprising a base, and also comprising a supporting device, a forming device and a hot pressing device arranged on the top of the base from right to left, the supporting device is used to support the material strip to reduce the fluctuation of the material strip, and the forming device is used to stamp the material strip into a conductive sheet;

[0006] The molding device comprises a bottom plate, a lower mold and an upper mold which are arranged in sequence from bottom to top, the lower mold comprises a lower mold plate, a stopper and a fixed block are respectively fixed on the front and rear sides of the bottom of the lower mold plate, and a conveying cavity for the lower film to pass through is formed between the fixed block and the stopper;

[0007] A material feeding assembly is provided in the fixed block, and the material feeding assembly includes a material dropping trough and a material discharging trough opened in the fixed block, the material dropping trough and the material discharging trough are connected and L-shaped, and a plurality of transmission rollers for conveying the conductive sheet to the lower film are provided at the bottom of the inner wall of the material dropping trough and the top and bottom of the inner wall of the material discharging trough;

[0008] The supporting equipment includes a lifting frame fixed to the top of the base and a dust-free cloth fixed to the top of the lifting frame. The lifting frame is arranged at the bottom of the material belt to support the material belt, and the dust-free cloth covers the top of the material belt to stabilize and clean the material belt.

[0009] Preferably, a plurality of transmission rollers are connected in a transmission manner to realize the same-direction rotation, so as to convey the stamped conductive sheets and flatten the conductive sheets at the same time, thereby improving the forming quality of the conductive sheets.

[0010] Preferably, a mold cavity matching the shape of the conductive sheet is opened on the lower template, and the upper mold includes an upper plate, a connecting plate is fixed to the bottom of the upper plate, a punch matching the mold cavity is fixed to the bottom of the connecting plate, the material strip is at the top of the lower template, and a press on the rear side of the top of the base drives the punch to move downward to punch out the conductive sheet on the material strip, and the four corners of the bottom of the upper plate and the four corners of the top of the base are respectively connected to guide parts, and the bottom of the connecting plate on both sides of the punch is provided with fixing components for fixing the material strip during stamping, and the fixing components include a pressing block, and the top of the pressing block is connected to the bottom of the connecting plate by a telescopic rod, and a spring is wound on the telescopic rod.

[0011] Preferably, the opening of one end of the blanking trough away from the discharge trough is arranged at the top of the fixed block, and the blanking trough is arranged at the bottom of the mold cavity and is connected with the mold cavity. The stamped conductive sheet falls into the blanking trough through the mold cavity, and the discharge trough is arranged on the side of the fixed block close to the conveying cavity away from the opening of one end of the blanking trough, and the discharge trough is connected with the conveying cavity.

[0012] Preferably, the inner wall of the conveying cavity is provided with a plurality of groups of guide rollers on one side of the feeding assembly for guiding the passing lower film.

[0013] Preferably, a limit block is fixedly provided on the front inner wall of the conveying cavity, and the limit block is arranged on the top of the lower film and at the same time, the limit block is arranged on the front side of the opening of one end of the discharge trough away from the blanking trough, which is used to limit the conductive sheet conveyed to the lower film.

[0014] Preferably, at least one guide roller is provided on the inner wall of the conveying cavity on the other side of the feeding component. The upper tape on the tape roll at the top of the hot pressing equipment enters the conveying cavity and passes around the guide roller and covers the top of the lower film on the other side of the feeding component. The formed conductive sheet is wrapped between the upper tape and the lower film.

[0015] Preferably, a preheating and pressing assembly for preheating and pressing the upper tape and the lower film is provided inside the conveying cavity at the other side of the feeding assembly, the preheating and pressing assembly includes multiple groups of hot pressing rollers, the hot pressing rollers are hollow inside and have multiple openings on the outside, a heat transfer cavity is provided inside the fixed block at one side of the blanking trough, the hot pressing rollers are fixedly connected to one end of the heat transfer cavity close to the heat transfer cavity with a short tube, the short tube extends into the heat transfer cavity and communicates with the heat transfer cavity, the transmission rollers are hollow inside and have multiple openings on the outside, the transmission rollers are fixedly connected to one end of the heat transfer cavity with a connecting tube, the connecting tube extends into the heat transfer cavity and communicates with the heat transfer cavity, the heat generated by stamping is transferred to the hot pressing rollers through the conductive sheet, the transmission rollers, the connecting tube, the heat transfer cavity and the short tube, so as to preheat and press the upper tape and the lower film between the hot pressing rollers; the preheated upper tape and the lower film are transferred out after being fully hot-pressed by the hot pressing equipment.

[0016] Preferably, an air pipe is provided on one side of the top of the base, the air pipe is located on the front side of the supporting device, and the air pipe is connected to an external air source for blowing and cleaning the material belt at the feeding end of the molding device.

[0017] The present invention also includes a molding process of the above-mentioned lithium battery conductive sheet molding system, and the specific steps are as follows:

[0018] Step 1: The material strip passes through the supporting device and enters the forming device. The lower film is guided into the conveying cavity by the guide roller. The upper tape of the tape roll is pulled out into the conveying cavity and passes through the guide roller and is at the top of the lower film before entering the hot pressing device.

[0019] Step 2: The lifting frame supports the material belt, the dust-free cloth fixes the material belt, and the dust-free cloth cooperates with the air pipe to blow air to clean the material belt;

[0020] Step 3: The cleaned material strip is conveyed to the top of the lower mold plate, and the punch driven by the press punches the conductive sheet on the material strip into the mold cavity one by one. The conductive sheet then falls into the blanking trough, and the conductive sheet is conveyed by the conveying roller through the discharge trough to the lower film in the conveying cavity. At the same time, the conductive sheet is between the conveying rollers, and the conveying rollers can flatten the conductive sheet;

[0021] Step 4: Subsequently, the upper tape is covered on the conductive sheet, and the upper tape and the lower film together cover the conductive sheet, and then the covered upper tape and the lower film enter the hot pressing roller room;

[0022] Step 5: The heat generated by the stamping of the molding equipment is transferred to the hot pressing roller through the conductive sheet, the transmission roller, the connecting tube, the heat transfer cavity, and the short tube. The hot pressing roller preheats and presses the upper tape and the lower film to make the upper tape and the lower film initially fit together, and maintain the stability of the upper tape, the conductive sheet, and the lower film before entering the hot pressing equipment;

[0023] Step 6: Finally, the upper tape, conductive sheet, and lower film enter the hot pressing equipment and are transferred out after being fully hot pressed.

[0024] In the above technical solution, the technical effects and advantages provided by the present invention are:

[0025] The conductive sheet forming process of the present invention is as follows: the material strip is supported by a supporting device and enters a forming device. After the stamping die punches out the conductive sheet on the material strip, the conductive sheet is wrapped by an upper adhesive tape and a lower film and then hot-pressed and transferred out. In this forming process, the following can be achieved:

[0026] 1. Support and fix the material strip at the feeding end to reduce the fluctuation of the material strip caused by stamping, prevent the position of the material strip from shifting, and at the same time clean the material strip to improve the molding quality of the conductive sheet;

[0027] 2. The punched conductive sheet is limited in position to prevent deviation during transportation to the lower film, and the conductive sheet can be flattened to improve the forming quality of the conductive sheet;

[0028] 3. After the punched conductive sheet is wrapped by the upper tape and the lower film, the heat generated during punching is used to preheat and press the upper tape and the lower film so that the two are initially bonded together before entering the hot pressing equipment for complete hot pressing. This can maintain the stability of the upper tape, the conductive sheet, and the lower film before entering the hot pressing equipment, preventing the conductive sheet from shifting during transportation and affecting the quality. In addition, the heat does not need to be provided by a heating device, saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is the overall structure diagram of the present invention;

[0030] Figure 2 It is a structural diagram of the molding equipment, supporting equipment and air pipe of the present invention;

[0031] Figure 3 It is a structural diagram of the molding equipment of the present invention;

[0032] Figure 4 It is the structural diagram of the upper mold bottom of the present invention;

[0033] Figure 5 It is a structural diagram of the lower mold of the present invention;

[0034] Figure 6 This is a bottom structural diagram of the lower mold of the present invention;

[0035] Figure 7 It is a front sectional view of the lower mold of the present invention;

[0036] Figure 8 It is a side sectional view of the lower mold of the present invention;

[0037] Fig. 9 It is a structural diagram of the preheating and pressing assembly of the present invention;

[0038] Fig.10 for Fig. 9 Enlarged view of part A in the middle.

[0039] Description of reference numerals:

[0040] 1 base;

[0041] 2 molding equipment, 3 bottom plate, 4 upper die, 41 upper plate, 42 connecting plate, 43 punch, 44 pressing block, 45 telescopic rod;

[0042] 5 lower mold, 51 lower mold plate, 52 mold cavity, 53 fixed block, 54 stopper, 55 conveying cavity;

[0043] 56 feeding assembly, 561 feeding chute, 562 discharging chute, 563 transmission roller;

[0044] 57 preheating and pressing assembly, 571 heat transfer chamber, 572 hot pressing roller, 573 short tube, 574 connecting tube;

[0045] 58 limit block, 59 guide roller, 510 guide roller;

[0046] 6 press machine, 7 support equipment, 71 lifting frame, 72 dust-free cloth;

[0047] 8 hot pressing equipment, 9 air pipe, 10 material tape, 11 lower film, 12 upper tape, 13 conductive sheet. DETAILED DESCRIPTION

[0048] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0049] The present invention provides Figure 1 A lithium battery conductive sheet forming system shown includes a base 1, a supporting device 7, a forming device 2 and a hot pressing device 8 arranged on the top of the base 1 from right to left, and the forming device 2 is used to stamp the material strip 10 into a conductive sheet 13.

[0050] Specifically, Figure 2 As shown, the supporting device 7 is used to support the material belt 10 and reduce the fluctuation of the material belt 10. The supporting device 7 includes a lifting frame 71 fixed to the top of the base 1 and a dust-free cloth 72 fixed to the top of the lifting frame 71. The lifting frame 71 is arranged at the bottom of the material belt 10 to support the material belt 10, and the dust-free cloth 72 covers the top of the material belt 10; after the material belt 10 is discharged by the discharge machine, it passes through the lifting frame 71 and the dust-free cloth 72. The liftable lifting frame 71 can support the material belt 10. At the same time, the material belt 10 passes through the dust-free cloth 72. The dust-free cloth 72 can not only fix the material belt 10 to reduce the fluctuation of the material belt 10 caused by subsequent stamping, but also cooperate with the air pipe 9 on the top side of the base 1 and the front side of the supporting device 7. The air pipe 9 is connected to an external air source for blowing air to the material belt 10 at the feeding end of the molding device 2, so as to clean the material belt 10 and improve the subsequent molding quality of the conductive sheet 13.

[0051] Next, the cleaned material strip 10 enters the molding device 2, such as Figure 2-5As shown, the molding device 2 includes a bottom plate 3, a lower mold 5 and an upper mold 4 arranged in sequence from bottom to top, the lower mold 5 includes a lower mold plate 51, and the lower mold plate 51 is provided with a mold cavity 52 adapted to the shape of the conductive sheet 13, the upper mold 4 includes an upper plate 41, and the four corners of the bottom of the upper plate 41 and the four corners of the top of the bottom plate 3 are respectively connected with guide members, and the guide members adopt the existing mold guide structure, which will not be further described here, and the bottom of the upper plate 41 is fixed with a connecting plate 42, and the bottom of the connecting plate 42 is fixed with a punch 4 adapted to the mold cavity 52 3. The bottom of the connecting plate 42 is provided with fixing components on both sides of the punch 43 for fixing the material strip 10 during stamping. The fixing components include a pressing block 44. The top of the pressing block 44 is connected to the bottom of the connecting plate 42 through a telescopic rod 45, and a spring is wound on the telescopic rod 45. The material strip 10 is conveyed to the top of the lower template 51. During stamping, the pressing block 44 contacts the material strip 10 first and presses the material strip 10 through the spring elastic force, and then the punch 43 is driven downward by the press 6 on the rear side of the top of the base 1 to punch out the conductive sheet 13 on the material strip 10.

[0052] Then, if Figure 5-9 As shown, a stopper 54 and a fixed block 53 are fixedly provided at the front and rear sides of the bottom of the lower mold plate 51, respectively, a conveying cavity 55 is formed between the fixed block 53 and the stopper 54, a feeding assembly 56 is provided in the fixed block 53, and the feeding assembly 56 includes a material drop trough 561 and a material discharge trough 562 opened in the fixed block 53, the material drop trough 561 and the material discharge trough 562 are connected and L-shaped, the opening of the end of the material drop trough 561 away from the material discharge trough 562 is provided at the top of the fixed block 53, and the material drop trough 561 is provided in the mold cavity. The bottom of the material discharging trough 562 is connected to the mold cavity 52, and the opening of one end of the material discharging trough 561 is arranged on the side of the fixed block 53 close to the conveying cavity 55, and the material discharging trough 562 is connected to the conveying cavity 55. The bottom of the inner wall of the material discharging trough 561 and the top and bottom of the inner wall of the material discharging trough 562 are both provided with a plurality of transmission rollers 563 for conveying the conductive sheet 13, and the plurality of transmission rollers 563 are connected in transmission to realize the same direction rotation (the driving and transmission structure of the transmission rollers 563 is a common prior art and will not be further described herein);

[0053] At the same time, the lower film 11 is discharged into the conveying chamber 55, and a plurality of guide rollers 59 are provided on the inner wall of the conveying chamber 55 at one side of the feeding assembly 56 to guide the passing lower film 11. The guide rollers can level the lower film 11. A limit block 58 is fixedly provided at the front of the inner wall of the conveying chamber 55, and the limit block 58 is provided at the top of the lower film 11. At the same time, the limit block 58 is provided at the front side of the opening of one end of the discharge trough 562 away from the blanking trough 561, so as to limit the conductive sheet 13 conveyed to the lower film 11.

[0054] The punched conductive sheet 13 falls into the blanking trough 561 through the mold cavity 52, and then the punched conductive sheet 13 is transported by the transmission roller 563 through the discharge trough 562 to the lower film 11 in the conveying cavity 55. The blanking trough 561 and the discharge trough 562 limit the position of the conductive sheet 13 to prevent it from being offset and transported to the lower film 11. At the same time, the conductive sheet 13 is between the transmission rollers 563, and the transmission rollers 563 can flatten the conductive sheet 13 to improve the molding quality of the conductive sheet 13.

[0055] like Figure 1 , 2 As shown in Figures 3, 5, 6 and 7, at least one guide roller 510 is provided on the inner wall of the conveying chamber 55 on the other side of the feeding assembly 56. The upper tape 12 on the tape roll at the top of the hot pressing device 8 enters the conveying chamber 55 and passes by the guide roller 510 and covers the top of the lower film 11 on the other side of the feeding assembly 56. The formed conductive sheet 13 is wrapped between the upper tape 12 and the lower film 11.

[0056] Then, if Figure 6 , 7 As shown in , 9 and 10, a preheating and pressing assembly 57 for preheating and pressing the upper adhesive tape 12 and the lower film 11 is provided inside the conveying cavity 55 at the other side of the feeding assembly 56, and the preheating and pressing assembly 57 includes a plurality of groups of hot pressing rollers 572, the hot pressing rollers 572 are hollow inside and have a plurality of openings on the outside, a heat transfer cavity 571 is provided inside the fixed block 53 at one side of the blanking trough 561, and the hot pressing rollers 572 are fixedly connected to one end of the heat transfer cavity 571 close to the heat transfer cavity 571 with a short tube 573, the short tube 573 extends into the heat transfer cavity 571 and communicates with the heat transfer cavity 571, the conveying rollers 563 are hollow inside and have a plurality of openings on the outside, and the conveying rollers 563 are fixedly connected to one end of the heat transfer cavity 571 close to the heat transfer cavity 571 with a connecting tube 574, the connecting tube 574 extends into the heat transfer cavity 571 and communicates with the heat transfer cavity 571;

[0057] Stamping is a processing method that uses a mold to punch, bend, and form metal sheets. Since the metal needs to be deformed during the processing, friction and deformation energy are consumed, which in turn are converted into heat. Therefore, a certain amount of heat will be generated during the stamping process. In the present invention, the heat generated when the conductive sheet is stamped is transferred to the hot pressing roller 572 through the conductive sheet 13, the transmission roller 563, the connecting tube 574, the heat transfer cavity 571 and the short tube 573, which is used to preheat and press the upper tape 12 and the lower film 11 between the hot pressing roller 572. The short tube 573 and the connecting tube 574 can be rotatably connected to the fixed block 53 through a sealed bearing so as not to affect the rotation of the hot pressing roller 572 and the transmission roller 563, and to ensure the sealing of the heat transfer cavity 571. Then, the preheated upper tape 12 and the lower film 11 are fully hot-pressed by the hot pressing equipment 8 and then transferred out.

[0058] The forming process of the lithium battery conductive sheet forming system of the present invention comprises the following specific steps:

[0059] Step 1: After the material strip 10 is discharged by the unloading machine, it passes through the supporting device 7 and enters the molding device 2. After the lower film 11 is discharged by the unloading machine, it is guided into the conveying cavity 55 by the guide roller 59. The upper tape 12 on the tape roll sleeved on the top of the hot pressing device 8 is pulled out into the conveying cavity 55, and passes by the guide roller 510 and is at the top of the lower film 11 before entering the hot pressing device 8.

[0060] Step 2: The lifting frame 71 which can be raised and lowered is used to support the material belt 10. At the same time, the material belt 10 passes through the dust-free cloth 72. The dust-free cloth 72 can not only fix the material belt 10 to reduce the fluctuation of the material belt 10 caused by subsequent stamping, but also cooperate with the air pipe 9 to blow air to the material belt 10 to clean the material belt 10.

[0061] Step 3: The cleaned material strip 10 is conveyed to the top of the lower mold plate 51, and the punch 43 is driven by the press 6 to move up and down to punch the conductive sheet 13 on the material strip 10 into the mold cavity 52 in sequence, and the conductive sheet 13 then falls into the blanking trough 561, and the conductive sheet 13 is conveyed to the lower film 11 in the conveying cavity 55 through the discharge trough 562 by the conveying roller 563. At the same time, the conductive sheet 13 is between the conveying rollers 563, and the conveying rollers 563 can flatten the conductive sheet 13 to improve the molding quality of the conductive sheet 13;

[0062] Step 4: Subsequently, the upper adhesive tape 12 is covered on the conductive sheet 13, and the upper adhesive tape 12 and the lower film 11 together cover the conductive sheet 13, and then the covered upper adhesive tape 12 and the lower film 11 enter between the hot pressing rollers 572;

[0063] Step 5: The heat generated by the molding device 2 during stamping is transferred to the heat transfer cavity 571 through the conductive sheet 13, the transmission roller 563, and the connecting tube 574. Then, the hot air in the heat transfer cavity 571 is transferred to the hot pressing roller 572 through the short tube 573. The hot pressing roller 572 preheats and presses the upper tape 12 and the lower film 11 to make the upper tape 12 and the lower film 11 initially fit together, and maintains the stability of the upper tape 12, the conductive sheet 13, and the lower film 11 before entering the hot pressing device 8, so as to prevent the conductive sheet 13 from shifting during the transportation process and affecting the quality. In addition, the heat does not need to be provided by the heating device, which saves costs.

[0064] Step 6: Finally, the upper adhesive tape 12 , the conductive sheet 13 , and the lower film 11 enter the hot pressing device 8 and are transferred out after hot pressing, so that the adhesive tape 12 and the lower film 11 are completely attached to each other.

Claims

1. A lithium battery conductive sheet forming system, comprising a base (1), characterized in that: It also includes a supporting device (7), a molding device (2) and a hot pressing device (8) which are arranged on the top of the base (1) from right to left in sequence, wherein the supporting device (7) is used to support the material strip (10) to reduce the fluctuation of the material strip (10), and the molding device (2) is used to stamp the material strip (10) into a conductive sheet (13); The molding device (2) comprises a bottom plate (3), a lower mold (5) and an upper mold (4) which are arranged in sequence from bottom to top, the lower mold (5) comprising a lower mold plate (51), a stopper (54) and a fixed block (53) are respectively fixedly provided on the front and rear sides of the bottom of the lower mold plate (51), and a conveying cavity (55) for the lower film (11) to pass through is formed between the fixed block (53) and the stopper (54); A material feeding assembly (56) is provided in the fixed block (53), and the material feeding assembly (56) comprises a material dropping trough (561) and a material discharging trough (562) which are provided in the fixed block (53); the material dropping trough (561) and the material discharging trough (562) are connected to each other and are L-shaped; a plurality of transmission rollers (563) for conveying the conductive sheet (13) to the lower film (11) are provided at the bottom of the inner wall of the material dropping trough (561) and the top and bottom of the inner wall of the material discharging trough (562); The supporting device (7) comprises a lifting frame (71) fixed to the top of the base (1) and a dust-free cloth (72) fixed to the top of the lifting frame (71); the lifting frame (71) is arranged at the bottom of the material belt (10) to support the material belt (10), and the dust-free cloth (72) covers the top of the material belt (10) to stabilize and clean the material belt (10); The inner wall of the conveying cavity (55) is located on one side of the feeding component (56) and is provided with a plurality of guide rollers (59) for guiding the passing lower film (11); the inner wall of the conveying cavity (55) is located on the other side of the feeding component (56) and is provided with at least one guide roller (510); the upper tape (12) on the tape roll at the top of the hot pressing device (8) enters the conveying cavity (55) and passes by the guide roller (510) before covering the top of the lower film (11) at the other side of the feeding component (56); the formed conductive sheet (13) is wrapped between the upper tape (12) and the lower film (11); A preheating and pressing assembly (57) for preheating and pressing the upper adhesive tape (12) and the lower film (11) is provided inside the conveying cavity (55) and located on the other side of the feeding assembly (56). The preheating and pressing assembly (57) includes a plurality of groups of hot pressing rollers (572). The hot pressing rollers (572) are hollow inside and have a plurality of openings on the outside. A heat transfer cavity (571) is provided inside the fixed block (53) and located on one side of the blanking trough (561). One end of the hot pressing rollers (572) close to the heat transfer cavity (571) is fixedly connected to a short tube (573). The short tube (573) extends into the heat transfer cavity (571) and communicates with the heat transfer cavity (571). The interior of the transmission roller (563) is hollow and the exterior is provided with a plurality of openings. One end of the transmission roller (563) close to the heat transfer cavity (571) is fixedly connected to a connecting pipe (574). The connecting pipe (574) extends into the interior of the heat transfer cavity (571) and communicates with the heat transfer cavity (571). The heat generated by stamping is transferred to the hot pressing roller (572) through the conductive sheet (13), the transmission roller (563), the connecting pipe (574), the heat transfer cavity (571) and the short tube (573), and is used to preheat and press the upper adhesive tape (12) and the lower film (11) between the hot pressing rollers (572). The preheated upper adhesive tape (12) and the lower film (11) are fully hot pressed by the hot pressing device (8) and then transferred out.

2. A lithium battery conductive sheet forming system according to claim 1, characterized in that: The plurality of transmission rollers (563) are connected in a transmission manner to achieve co-directional rotation, and are used to transport the punched conductive sheet (13) and to flatten the conductive sheet (13) at the same time.

3. A lithium battery conductive sheet forming system according to claim 1, characterized in that: The lower mold plate (51) is provided with a mold cavity (52) that matches the shape of the conductive sheet (13); the upper mold (4) comprises an upper plate (41); a connecting plate (42) is fixed to the bottom of the upper plate (41); a punch (43) that matches the mold cavity (52) is fixed to the bottom of the connecting plate (42); the material strip (10) is located at the top of the lower mold plate (51); a press (6) at the rear side of the top of the base (1) drives the punch (43) to move downward to punch out the conductive sheet (13) on the material strip (10); The four corners at the bottom of the upper plate (41) and the four corners at the top of the bottom plate (3) are respectively connected with guide members. The bottom of the connecting plate (42) is provided with fixing components on both sides of the punch (43) for fixing the material strip (10) during punching. The fixing components include a pressing block (44). The top end of the pressing block (44) is connected to the bottom end of the connecting plate (42) via a telescopic rod (45), and a spring is wound around the telescopic rod (45).

4. A lithium battery conductive sheet forming system according to claim 1, characterized in that: One end of the blanking trough (561) away from the discharge trough (562) is open and arranged at the top of the fixed block (53), and the blanking trough (561) is arranged at the bottom of the mold cavity (52) and is in communication with the mold cavity (52); the stamped conductive sheet (13) falls into the blanking trough (561) through the mold cavity (52); one end of the discharge trough (562) away from the blanking trough (561) is open and arranged at a side of the fixed block (53) close to the conveying cavity (55), and the discharge trough (562) is in communication with the conveying cavity (55).

5. A lithium battery conductive sheet forming system according to claim 1, characterized in that: A limit block (58) is fixedly provided on the front part of the inner wall of the conveying chamber (55), and the limit block (58) is arranged on the top of the lower film (11). At the same time, the limit block (58) is arranged on the front side of the opening of one end of the discharge trough (562) away from the blanking trough (561), and is used to limit the conductive sheet (13) conveyed to the lower film (11).

6. A lithium battery conductive sheet forming system according to claim 1, characterized in that: An air pipe (9) is provided on one side of the top of the base (1), and the air pipe (9) is located on the front side of the supporting device (7). The air pipe (9) is connected to an external air source for blowing and cleaning the material belt at the feeding end of the molding device (2).

7. The molding process of the lithium battery conductive sheet molding system according to any one of claims 1 to 6, characterized in that: The specific steps are as follows: Step 1: the material strip (10) passes through the supporting device (7) and enters the forming device (2); the lower film (11) is guided into the conveying chamber (55) by the guide roller (59); the upper tape (12) of the tape roll is pulled out into the conveying chamber (55), and passes around the guide roller (510) and enters the hot pressing device (8) after being at the top of the lower film (11); Step 2: The lifting frame (71) supports the material belt (10), the dust-free cloth (72) fixes the material belt (10), and the dust-free cloth (72) cooperates with the air pipe (9) to blow air to clean the material belt (10); Step 3: The cleaned material strip (10) is conveyed to the top of the lower mold plate (51), and the punch (43) is driven by the press (6) to punch the conductive sheet (13) on the material strip (10) into the mold cavity (52) in sequence, and the conductive sheet (13) then falls into the blanking trough (561), and the conductive sheet (13) is conveyed by the conveying roller (563) through the discharge trough (562) to the lower film (11) in the conveying cavity (55), and at the same time, the conductive sheet (13) is between the conveying rollers (563), and the conveying rollers (563) can flatten the conductive sheet (13); Step 4: Subsequently, the upper adhesive tape (12) is covered on the conductive sheet (13), the upper adhesive tape (12) and the lower film (11) together cover the conductive sheet (13), and then the covered upper adhesive tape (12) and the lower film (11) enter between the hot pressing rollers (572); Step 5: The heat generated by the molding device (2) during stamping is transferred to the hot pressing roller (572) through the conductive sheet (13), the transmission roller (563), the connecting tube (574), the middle and short tubes (573) of the heat transfer chamber (571), and the hot pressing roller (572) preheats and presses the upper adhesive tape (12) and the lower film (11) so that the upper adhesive tape (12) and the lower film (11) are initially bonded together, thereby maintaining the stability of the upper adhesive tape (12), the conductive sheet (13), and the lower film (11) before entering the hot pressing device (8); Step 6: Finally, the upper adhesive tape (12), the conductive sheet (13), and the lower film (11) enter the hot pressing device (8) and are transferred out after being fully hot pressed.

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