WO2023213304A1 - Battery cell manufacturing apparatus and manufacturing process thereof - Google Patents

Abstract

A battery cell manufacturing apparatus and a manufacturing process thereof. The battery cell manufacturing apparatus comprises a main traction mechanism (7), a separator pulling mechanism (8), and a lamination platform (9); the main traction mechanism (7) is arranged on a supporting vertical plate; the separator pulling mechanism (8) is arranged at one side of a separator pulling direction of the main traction mechanism (7); the separator pulling mechanism (8) comprises two groups of separator pulling components, and the two groups of separator pulling components are rotatably arranged in a vertical direction by using the middle portions of the separator pulling components as fulcrums; the lamination platform (9) is arranged on a machine table (1); the lamination platform (9) comprises a lamination supporting table (91) and separator pressing components (92) arranged at the front and rear sides of the lamination supporting table; and an upper slideway and a lower slideway arranged at intervals in the vertical direction are arranged in each separator pressing component (92).

Description

A battery core manufacturing device and its manufacturing process

Related applications

This application claims priority to the Chinese patent application with application number 202210478542.4 filed on May 5, 2022, the entire content of which is incorporated into this application by reference.

Technical field

This application relates to the field of lithium-ion power battery manufacturing, and specifically refers to a battery core manufacturing device and its manufacturing process for automated battery core lamination manufacturing.

Background technique

Lithium battery Lithium battery refers to batteries containing lithium in the electrochemical system, including metallic lithium, lithium alloys, lithium ions, and lithium polymers. Lithium batteries can be roughly divided into two categories: lithium metal batteries and lithium-ion batteries. A lithium battery is a rechargeable battery that relies primarily on the movement of lithium ions between the positive and negative electrodes to work. Batteries that generally use materials containing lithium as electrodes are representatives of modern high-performance batteries. As the country vigorously promotes the development of new energy, the demand for lithium-ion power batteries in all walks of life is growing day by day. In the composition structure of lithium-ion power batteries, the battery core is its core component. The battery core is generally composed of positive and negative electrode sheets interlaced with each other. become. The battery core structure includes multiple positive and negative electrode sheets staggered up and down. The positive and negative electrode sheets are isolated and insulated by separators. At present, domestic technologically advanced lithium battery equipment is mainly in the hands of foreign equipment suppliers, and domestic high-end lithium battery lamination equipment currently mainly relies on imports.

The cells of lithium-ion batteries are generally formed by staggered positive and negative electrode sheets, and an insulating separator needs to be inserted between the positive and negative electrode sheets. At present, the manufacturing process of battery cells includes two methods: strip lamination and single-chip lamination, depending on the separator insertion process. That is, continuous separators and single-chip separator lamination are used during lamination. For the strip lamination process, the positive and negative electrode sheets are alternately placed on the lamination platform during lamination. The strip-shaped separator is pulled back and forth on the lamination platform. After the positive electrode sheet or negative electrode sheet is stacked, it is covered with the positive electrode sheet or the negative electrode sheet. The surface of the negative electrode sheet, and then cut the separator; in this lamination method, the strip separator is tensioned and pulled back and forth during the lamination process. There is internal stress. After cutting, wrinkles will appear on the surface of the separator, which affects the quality of the battery core. . For the single-chip stacking process, the separator is cut into a single-piece structure before lamination. After stacking the positive and negative electrode sheets, the single-piece separator is stacked on the surface of the positive electrode sheet or negative electrode sheet to achieve lamination. This lamination process requires many The diaphragms are taken and stacked one after another, resulting in low lamination efficiency. In order to ensure the position accuracy of each lamination, the diaphragms need to be aligned before lamination. It is difficult to effectively guarantee the position accuracy of the laminations.

Regarding the strip lamination process, there are the following technical difficulties that need to be solved during the automated lamination design process:

After the strip-shaped diaphragm is led out by the film releasing mechanism, it is clamped by the film pulling mechanism and pulled out left and right above the lamination platform with the middle position of the lamination platform as the fulcrum and horizontally covered above the lamination platform, along the center line of the lamination platform. (Vertical direction) The upper part is the fulcrum for pulling the diaphragm belt left and right, and the lower part is the clamping point where the diaphragm belt is clamped by the membrane pulling mechanism. When the clamping point moves to the left or right side of the lamination platform, it needs to be tilted at a certain angle. , so the actual pull-out direction of the diaphragm belt (that is, the length of the film) is the length from the fulcrum to the left point or the right point of the lamination platform, while in the prior art, the calculated length of the film release mechanism is from the fulcrum to the clamping point. length, so there is a length error between the film length and the film release length of the film release mechanism, which affects the accuracy of the stacked diaphragm. However, the existing diaphragm release mechanism lacks the function of actively and accurately controlling the film release length, and cannot guarantee the film length.

Contents of the invention

The technical problem to be solved by this application is to address the shortcomings of the prior art and provide a rotatable film pulling method to overcome the influence of linear detection friction and spring force, greatly improve the detection accuracy, and through film pulling Angle real-time detection cooperates with the main traction function, through the detected film pulling angle feedback, and through the main traction to achieve precise film placement. At the same time, the slide-type guide lamination is used to reduce the lamination transmission error and ensure the stability of the lamination and precise movement. The battery core manufacturing device and its manufacturing process with high degree of accuracy and flatness.

The first aspect of this application provides: a battery core manufacturing device, including a horizontally arranged machine platform and a rack arranged on the machine platform, with support vertical plates provided on the sides of the rack;

It also includes the main traction mechanism, film pulling mechanism and lamination platform, among which,

The main traction mechanism is arranged on the support vertical plate. The main traction mechanism compresses the diaphragm belt from both sides of the diaphragm belt and drives the diaphragm belt to be pulled out into the film pulling mechanism;

The film-drawing mechanism is arranged on one side of the main traction mechanism in the film-drawing direction; the film-drawing mechanism includes two sets of film-drawing assemblies, and the two sets of film-drawing assemblies are rotatably arranged with their middle parts as fulcrums in the vertical direction. The lower part of the membrane module presses the diaphragm belt from both sides of the diaphragm belt. The upper parts of the two groups of membrane pulling modules are equipped with tension detection parts. The two groups of membrane pulling modules drive the diaphragm belt to move left and right along the stacking platform to pull out the diaphragm belt. The reaction force of the belt causes the membrane component to rotate. When the membrane component rotates, the force is transmitted to the tension detection component to detect the diaphragm tension;

The lamination platform is arranged on the machine platform. The lamination platform includes a lamination support and lamination components arranged on the front and rear sides of the lamination support. The lamination component is internally provided with upper slides spaced up and down along the vertical direction. The upper slideway and the lower slideway are set horizontally. The lamination component of the lamination assembly moves cyclically along the upper slideway and the lower slideway so that it can be pressed from the left or right side of the lamination support during the lamination process. Diaphragm on laminated support.

The second aspect of this application provides a manufacturing process for a battery core manufacturing device, including the following process steps:

S1. Diaphragm unwinding: The diaphragm tape to be coated is rotated and exported through the unwinding mechanism;

S2. Diaphragm tension detection: The diaphragm tape exported by the diaphragm releasing mechanism in step S1 enters the tension detection mechanism, and the tension in the length direction of the diaphragm tape when it is exported is detected in real time;

S3. Diaphragm tension adjustment: The diaphragm belt exported by the diaphragm releasing mechanism in step S1 enters the tension swing rod mechanism, and the tension swing rod mechanism drives the rotation angle of the tension roller to control the tension of the diaphragm belt export;

S4. Diaphragm buffering: The diaphragm tape exported by the diaphragm releasing mechanism in step S1 enters the diaphragm buffering mechanism. The diaphragm buffering mechanism caches the diaphragm exported by the diaphragm releasing mechanism to a certain length, and cooperates with the film pulling mechanism to release the diaphragm belt when pulling the film;

S5. Main traction and width correction of the diaphragm: The diaphragm belt exported from the diaphragm release mechanism in step S1 enters the main traction mechanism, clamps the diaphragm belt from the left and right sides of the diaphragm belt through the main traction mechanism, and actively drives the diaphragm belt along its direction through rotational power. Movement in the length direction; and the main traction mechanism drives the clamped diaphragm belt to move in the width direction to correct the width of the diaphragm belt;

S6. Film guide and sandwich film: The diaphragm belt exported from the main traction mechanism in step S5 sequentially enters the film guide component of the film pull mechanism and the gap space between the two groups of film pull components below the guide film assembly, and passes through the two groups of pull film components. Membrane module clamping;

S7, left and right pulling film covering and lifting to avoid air: In step S6, the pulling film component clamps the diaphragm belt and drives the diaphragm belt to move linearly back and forth above the lamination platform along the left and right directions of the lamination platform, so as to open the diaphragm belt horizontally and then pull it and cover it on the stacking platform or pole piece; and during the process of pulling the membrane on the left and right, the membrane pulling assembly is driven by the membrane lifting assembly to rise to a certain height synchronously and cooperatively, so as to avoid the interference with the stacked pole piece when the diaphragm belt is pulled out horizontally. Movement interference;

S8. Film-drawing angle detection: In step S7, the film-drawing component moves linearly back and forth along the left or right side of the stacking platform respectively. During the film-drawing process, the reaction force of the diaphragm drives the film-drawing component on the right side to rotate to the right or drives the left side. The film-drawing component on the side rotates to the left; the angle during the rotation of the film-drawing component is detected by the angle detector in real time, and the detection information is sent to the industrial computer. The industrial computer sends instructions to the main traction mechanism to control according to the film-drawing rotation angle. The length of the main traction mechanism traction diaphragm;

S9. Pressing film: In step S7, when the diaphragm belt is pulled out by the pulling film component and covered to the lamination platform or pole piece, the pressing film components on the front and rear sides of the lamination platform press the horizontally opened diaphragm belt to prevent the film from pulling. During the process, the stacked diaphragm layer is brought up;

S10. Lamination: The lamination mechanism takes out the positive or negative electrode sheets and stacks them horizontally on the diaphragm belt that was opened horizontally in step S7;

S11. Cyclic alternating lamination and lamination: cycle steps S7, S9, and S10. After lamination on the lamination platform, stack the positive electrode sheet or negative electrode sheet. After the separator belt is pressed by the lamination pressing assembly, the film pulling mechanism re-coats the film to The surface of the positive electrode piece or the negative electrode piece is circulated in this way until a battery core electrode group is formed.

Description of the drawings

Figure 1 is one of the three-dimensional structural schematic diagrams of the present application.

Figure 2 is the second schematic diagram of the three-dimensional structure of the present application.

Figure 3 is one of the three-dimensional structural schematic diagrams of the main traction mechanism of this application.

Figure 4 is the second schematic three-dimensional structural diagram of the main traction mechanism of the present application.

Figure 5 is the third schematic diagram of the three-dimensional structure of the main traction mechanism of the present application.

Figure 6 is one of the three-dimensional structural schematic diagrams of the film pulling mechanism of the present application.

Figure 7 is the second schematic diagram of the three-dimensional structure of the film pulling mechanism of the present application.

Figure 8 is the third schematic diagram of the three-dimensional structure of the film pulling mechanism of the present application.

Figure 9 is the fourth schematic diagram of the three-dimensional structure of the film pulling mechanism of the present application.

Figure 10 is one of the three-dimensional structural schematic diagrams of the stretched film module of the present application.

Figure 11 is the second schematic diagram of the three-dimensional structure of the stretched film module of the present application.

Figure 12 is the third schematic diagram of the three-dimensional structure of the stretched film module of the present application.

Figure 13 is one of the three-dimensional structural schematic diagrams of the lamination platform of the present application.

Figure 14 is the second schematic diagram of the three-dimensional structure of the lamination platform of this application.

Figure 15 is one of the three-dimensional structural schematic diagrams of the lamination module of the present application.

Figure 16 is the second schematic diagram of the three-dimensional structure of the lamination module of the present application.

Figure 17 is one of the three-dimensional structural schematic diagrams of the lamination module of the present application.

Figure 18 is the second schematic diagram of the three-dimensional structure of the lamination module of the present application.

Figure 19 is the third schematic diagram of the three-dimensional structure of the lamination module of the present application.

Figure 20 is one of the structural schematic diagrams of the components of the lamination assembly of the present application.

Figure 21 is the second structural schematic diagram of the components of the lamination assembly of the present application.

Figure 22 is the third structural schematic diagram of the components of the lamination assembly of the present application.

Figure 23 is the fourth structural schematic diagram of the components of the lamination assembly of the present application.

Figure 24 is the fifth structural schematic diagram of the components of the lamination assembly of the present application.

Figure 25 is the sixth component structural diagram of the lamination assembly of the present application.

Figure 26 is the seventh component structural diagram of the lamination assembly of the present application.

Figure 27 is a schematic three-dimensional structural diagram of the lifting mechanism of the present application.

Figure 28 is a flow chart of the present application.

Detailed ways

The present application will be further described below in conjunction with the accompanying drawings:

As shown in Figures 1 to 25, the technical solution adopted in this application is as follows: a battery core manufacturing device, including a horizontally arranged machine platform 1 and a frame 2 arranged on the machine platform 1. The side of the frame 2 Equipped with supporting vertical boards;

It also includes a main traction mechanism 7, a film pulling mechanism 8 and a lamination platform 9, among which,

The main traction mechanism 7 is arranged on the support vertical plate. The main traction mechanism 7 compresses the diaphragm belt from both sides of the diaphragm belt and drives the diaphragm belt to be pulled out into the film pulling mechanism 8;

The film-drawing mechanism 8 is arranged on one side of the main traction mechanism 7 in the film-drawing direction; the film-drawing mechanism 8 includes two groups of film-drawing components, and the two groups of film-drawing components are rotatably arranged with the middle part thereof as a fulcrum in the vertical direction. The lower parts of the two groups of film-drawing components press the diaphragm belt from both sides of the diaphragm belt respectively. The upper parts of the two groups of film-drawing components are equipped with tension detection parts. The two groups of film-drawing components drive the diaphragm belt to move left and right along the lamination platform to pull out the diaphragm belt. When the diaphragm belt is rotated, the reaction force of the diaphragm belt causes the diaphragm component to rotate. When the diaphragm component rotates, the force is transmitted to the tension detection component to detect the diaphragm tension;

The lamination platform 9 is arranged on the machine 1. The lamination platform 9 includes a lamination support 91 and lamination components 92 arranged on the front and rear sides of the lamination support 91. The lamination component 92 is provided with a vertical axis inside the lamination support 91. The upper slideway and the lower slideway are spaced up and down in the direction, and the upper slideway and the lower slideway are arranged horizontally. The lamination component of the lamination assembly 92 moves cyclically along the upper slideway and the lower slideway, so that during the lamination process, the lamination support 91 Press the diaphragm on the lamination support 91 in the left or right direction.

As shown in Figures 1 to 2, the present application also includes a film release mechanism 3 provided on the support vertical plate and used for winding the diaphragm tape and releasing the diaphragm tape; and a film release mechanism 3 provided on the support vertical plate, A tension detection mechanism 4 for tension detection during the process of pulling out the diaphragm belt; and a tension swing bar mechanism 5 provided on the support vertical plate for tension and relaxation adjustment during the process of pulling out the diaphragm belt; and a tension lever mechanism 5 provided on the supporting vertical plate. On the support vertical plate, there is a diaphragm caching mechanism 6 for caching during the pull-out process of the diaphragm belt; after the diaphragm is released by the film releasing mechanism 3, it passes through the tension detection mechanism 4, the tension swing bar mechanism 5 and the diaphragm caching mechanism 6 in sequence. , enter the main traction mechanism 7.

As shown in Figures 3 to 5, the main traction mechanism 7 of the present application includes a diaphragm correction component, a passive film pressing roller group and an active film pressing roller group, wherein the diaphragm correction component is arranged on the support vertical plate, and the diaphragm correction component Linear power is output along the width direction of the diaphragm; the active film pressing roller group and the passive film pressing roller group are connected to the diaphragm correction component at intervals, and are driven by the diaphragm correction component to move linearly along the diaphragm width direction, and the diaphragm belt passes through the active film pressing component. The gap space between the roller group and the passive lamination roller group; the passive lamination roller group is close to or away from the active lamination roller group to compress or loosen the diaphragm belt; the active lamination roller group has rotational power and rotates Power is transmitted to the compressed diaphragm belt to drive the diaphragm belt along its length.

The main traction mechanism 7 also includes a pressing film driving component, which is connected to the output end of the diaphragm correction component; the passive pressing film roller group is connected to the output end of the pressing film driving component and is driven by the pressing film driving component. And move closer to or away from the active laminating roller group.

The diaphragm correction assembly includes a correction support 71, a correction motor 72, a correction slide rail 73, a correction slide 74 and a correction support plate 75, wherein the correction support 71 is connected to the support vertical plate; the correction motor 72 is arranged on The side of the correction support 71, and the output end is arranged along the width direction of the diaphragm; the correction slide rail 73 is provided on the side wall of the correction support 71 along the direction of the output end of the correction motor 72; the correction slide 74 is slidable is disposed on the correction slide rail 73 and is connected to the output end of the correction motor 72; the correction support plate 75 is arranged on the correction slide 74 in a direction perpendicular to the correction slide 74; the correction motor 72 drives the correction slide 74 and The correction support plate 75 moves linearly along the width direction of the diaphragm.

The film pressing drive assembly includes a film pressing slide rail 76 and a film pressing cylinder 79, wherein the film pressing slide rail 76 is disposed on one side wall of the correction support plate 75 in a direction perpendicular to the output end of the diaphragm correction component; The film cylinder 79 is arranged on the other side wall of the deflection-correcting support plate 75 along the direction of the film pressing slide rail 76 .

The passive lamination roller group includes a lamination slide 77, a connecting seat 78 and a passive roller 712, wherein the lamination slide 77 is slidably connected to the lamination slide rail 76; the passive roller 712 is connected to The connecting seat 78 is connected to the other side wall of the laminating slide seat 77 and extends to the output end of the laminating cylinder 79 side, and is connected to the output end of the laminating cylinder 79. The laminating cylinder 79 drives the laminating slide 77 through the connecting seat 78 to drive the passive roller 712 to move linearly; the connecting seat 78 is also provided with a through slot, and the deviation correction The support plate 75 passes through the through slot and is movably connected with the through slot to avoid movement interference between the deviation-correcting support plate 75 and the connection base 78 when the connection base 78 moves linearly.

The active pressing roller group includes an active motor 710 and an active roller 711. The active motor 710 is fixedly arranged on the deflection-correcting support plate 75 along the diaphragm width direction; the active roller 711 is connected to the output end of the active motor 710. The active motor 710 is driven to rotate; the active roller 711 extends along the width direction of the diaphragm and is spaced parallel to the passive roller 712. The diaphragm belt passes through the gap space between the active roller 711 and the passive roller 712, and passes through the two After being compressed, the driving roller 711 rotates and drives the diaphragm belt to move along its length direction.

As shown in Figures 6 to 12, the film-drawing mechanism 8 of the present application also includes a film-drawing driving component, a film-drawing lifting component and a film-guiding component, wherein the film-drawing driving component is arranged on the supporting vertical plate; The film lifting component is disposed on the output end of the film-drawing drive component, and is driven by the film-drawing drive component to move horizontally and linearly along the left and right directions of the stacking platform 9; the output end of the film-drawing lifting component is disposed in the vertical direction; the film guide component The film-drawing components and the film-drawing components are arranged at intervals along the vertical direction and are respectively connected to the output end of the film-drawing lifting component. A film-conducting gap is formed in the film-conducting component, and the diaphragm belt passes through the guiding film gap and then enters between the two groups of film-drawing components; The film-drawing lifting component drives the synchronous lifting and lowering movement of the film-conducting component and the film-drawing component, so that the film-drawing component can lift the height of the pole piece thickness when pulling out the diaphragm above the stacking platform to avoid interference with the movement of the pole piece on the stacking platform during lamination. .

The film-drawing driving assembly includes a film-drawing linear module 81 and a film-drawing linear slide 82, wherein the film-drawing linear module 81 is arranged on the machine 1, and the output end is arranged horizontally and linearly along the left and right directions of the lamination platform; so The film linear slide 82 is connected to the output end of the film linear slide 81 and is driven by the film linear slide 82 to move linearly.

The film-drawing lifting assembly includes a lifting slide rail 83, a lifting motor 84, a lifting gear 85, a lifting base 86 and a lifting rack 87, wherein the lifting slide rail 83 is vertically arranged on the film-drawing linear slide 82; The seat 86 is slidably embedded in the lifting slide rail 83; the lifting motor 84 is horizontally arranged on the film pulling linear slide seat 82 along the output end direction of the film pulling linear module 81; the lifting gear 85 is sleeved and fixed on on the output shaft of the lifting motor 84, and driven by the lifting motor 84 to rotate; the lifting rack 87 is vertically arranged on one side wall of the lifting base 86, and is meshed with the lifting gear 85, and the lifting gear 85 rotates When, the lifting rack 87 is driven to drive the lifting base 86 to move up and down.

The film guide assembly includes a film guide bracket 88 and a film guide roller 89. The film guide bracket 88 is horizontally arranged on the other side wall of the lifting seat 86 along the width direction of the diaphragm belt. The film guide bracket 88 is provided with an installation slot. ; The film guide rollers 89 include two. The two film guide rollers 89 are horizontally spaced in the installation groove along the width direction of the diaphragm belt, and are rotatably connected to the film guide bracket 88. Between the two film guide rollers 89 A conductive gap is formed for the diaphragm tape to pass through.

The film-drawing assembly includes a film-drawing support plate 810, a film-drawing rotating part, a tension detection part, an angle detection part and a film-drawing roller 818, wherein the film-drawing support plate 810 is vertically connected to the bottom of the film guide bracket 88; The film-drawing rotating member is rotatably connected to the film-drawing support plate 810; the tension detection member is arranged on the upper outer side of the film-drawing rotating member and extends horizontally toward the film-drawing support plate 810 until its detection end contacts the film-drawing support plate 810. Support plate 810, the film-drawing rotating member is rotated by the reaction force of the diaphragm belt and resists the film-drawing support plate 810. The reaction force of the film-drawing support plate 810 to the tension detection member is detected in real time by the tension detection member; the angle detection member is arranged on On the film-drawing rotating member, in order to detect in real time the angle at which the film-drawing rotating member rotates due to the reaction force of the diaphragm belt; the film-drawing roller 818 is rotatably arranged at the lower part of the film-drawing rotating member, and the diaphragm belt passes through the two sets of film-drawing components. The film pulling roller 818 is clamped, and the reaction force of the diaphragm belt is transmitted to the film pulling roller 818 when the film is pulled.

The film rotating member includes a film rotating base 814 and a film rotating shaft 815, wherein the film rotating shaft 815 is rotatably arranged at the lower part of the film support plate 810 along the width direction of the diaphragm belt; the film rotating base 814 is connected On the film-drawing rotating shaft 815, a roller support 817 is provided at the lower part of the film-drawing rotating seat 814, and an installation space is provided at the lower part of the roller support 817; the film-drawing roller 818 is rotatably arranged in the installation space along the width direction of the diaphragm. .

The tension detection component includes a detection support 813, a detection cylinder 814 and a tension detector 812. The detection support 813 is provided on the side wall of the film-drawing swivel base 814 and extends vertically upward; the detection cylinder 814 is arranged along the The tension detector 812 is arranged on one side wall of the detection support 813 perpendicularly to the direction of the detection support 813, and the output end extends through the detection support 813 to the other side of the detection support 813; the tension detector 812 is along the detection cylinder. The setting direction of 814 is connected to the output end of the detection cylinder 814, and its detection end extends and is close to the side wall of the film support plate 810.

The angle detection component includes an angle detector 816. The angle detector 816 is disposed at the end of the film pulling shaft 815 and detects the rotation angle of the film pulling shaft 815 during the film pulling process as the film pulling shaft 815 rotates.

As shown in Figures 13 to 25, the lamination assembly 92 of the present application includes a lamination support plate 921, a horizontal power component, a lamination component, a slide changer component and a slide component, wherein the lamination support plate 921 is horizontal It is arranged on the front or rear side of the lamination support 91; the horizontal power component is arranged on the lamination support plate 921, and the power output direction is horizontal along the direction perpendicular to the front or rear side of the lamination support 91 Set; the film-pressing component is connected to the output end of the horizontal power component, and is movably connected to the output end of the horizontal power component in the vertical direction; the slide changer is The component is arranged on the horizontal power component, and the output end is arranged in the vertical direction and connected to the lamination component; the slide component is disposed on the lamination support plate 921, and the slide component includes a power output along the horizontal power component. The upper slideway and the lower slideway extend horizontally; the lamination component is driven by the horizontal power component to move horizontally and linearly along the upper slideway or the lower slideway, and is driven by the slideway changer component to transfer between the upper slideway and the lower slideway.

One end of the upper slideway and the lower slideway close to the lamination support 91 is an open structure, and the other end is provided with a flexible opening. The pressing film component is driven by vertical power at the open structure at one end of the upper slideway and the lower slideway and the flexible opening at the other end. The position is transferred from the lower slide to the upper slide; the flexible opening is automatically closed so that the lamination component can move linearly on the upper slide

The horizontal power components include a linear motor 922, a motor slide 923 and a horizontal drive slide 924. The linear motor 922 is horizontally arranged on the lamination support plate 922; the motor slide 923 is vertical to the lamination support 91 The front side or the rear side is movably arranged horizontally on the linear motor 922, and is driven by the linear motor 922 to move linearly; the horizontal driving slide 924 is connected to the motor slide 923.

The pressing component includes a vertical slide rail 925, a lifting slide 926, a pressing sheet 927 and a guide wheel 929. The vertical slide rail 925 is arranged on the side wall of the horizontal driving slide 924 in the vertical direction; the lifting The slide seat 926 is slidably embedded in the vertical slide rail 925; the pressing film 927 is horizontally connected to the side wall of the lifting slide seat 926 and faces perpendicular to the front or rear side of the lamination support 91 The guide wheel 929 extends in the direction; the guide wheel 929 is connected to the lifting slide 926 through the connecting block, and the guide wheel 929 rolls freely on the upper slide or the lower slide, and is limited and guided by the upper slide or the lower slide.

The slide changing component includes a slide changing cylinder 928, wherein the slide changing cylinder 928 is connected to the horizontal driving slide 924, and the output end is set in the vertical direction and connected to the lifting slide 926 to drive the lifting slide. The seat 926 drives the diaphragm 927 to move from the lower slide to the upper slide against the influence of gravity.

The slideway component includes a slideway support plate 9210, an upper slideway 9215, a lower slideway 9216 and a flexible sealing member. The slideway support plate 9210 is arranged vertically on the lamination support plate 921, and is perpendicular to the lamination support. The front side or rear side of the platform 91 extends; the upper slide 9215 and the lower slide 9216 are spaced up and down on one side wall of the slide support plate 9210, and are in the same extension direction as the slide support plate 9210 ; The upper slideway 9215 extends horizontally, and has a flexible opening at one end away from the lamination support 91; the two ends of the lower slideway 9216 are provided with transitional slopes, and the transitional slopes slope downward toward the direction close to the lamination support 91 Extend; the flexible sealing member is provided at the flexible opening.

The flexible sealing member includes a sealing support 9211, a sealing rocker 9212, a sealing spring 9213, and a sealing plate 9214. The sealing support 9211 is provided on the other side wall of the slide support plate 9210; the sealing rocker 9212 One end is rotatably connected to the sealing support 9211, and the other end extends to the flexible opening and is connected to the sealing spring 9213 provided on the sealing support plate 9210; the sealing plate 9214 is horizontally connected to the sealing rocker 9212, And is located in the flexible opening. In the natural state, the elastic force of the sealing spring 9213 drives the sealing plate 9214 downward through the sealing swing block 9212, so that the sealing plate 9214 maintains a horizontal state and is fastened to the flexible opening to seal the flexible opening. At the sealing point, the slide cylinder 928 drives the lifting slide 926 to move upward, and the lifting slide 926 drives the guide wheel 929 to push the sealing plate 9214 upward, so that the guide wheel 929 enters the upper slide 9215 from the lower slide 9216 through the flexible opening, and the guide wheel 929 After fully entering the upper slide 9215, the sealing plate 9214 is automatically pulled to the level by the sealing spring 9213, so that the guide wheel 929 can roll linearly on the upper slide 9215.

In one embodiment, as shown in Figures 26 to 27, the present application also includes a slide rail 10 and a lifting mechanism 11. The slide rail 10 includes an upper slide rail and a lower slide rail arranged in parallel and spaced apart along the vertical direction. The upper slide rail and Lifting stations are respectively provided at the corresponding upper and lower positions on both sides of the lower rail, and a lamination station is provided on the upper slide rail, and a blanking station is provided at one end of the lower rail; the above-mentioned lamination platform is slidably provided on the slide rail 10 , driven by the conveyor belt on the side of the slide rail 10 to move linearly; the above-mentioned lifting mechanism 11 includes two sets, which are respectively installed at the lifting stations on both sides. The lifting mechanism 11 receives the lamination platform and drives the lamination platform to move on the upper slide rail. and transfer between lower rails.

The lifting mechanism 11 of the present application includes a lifting support 111, a lifting motor 112 and a lifting slide 113. The above-mentioned lifting support 111 is arranged vertically, and a screw rod is vertically provided in the middle of the lifting support 111. The two ends of the screw rod are respectively Rotably connected to the bottom plate and top plate of the lifting support 111, two linear slide rails are vertically provided on one side wall of the lifting support 111; the above-mentioned lifting motor 112 is provided on the bottom plate of the lifting support 111, and outputs The shaft is connected to the screw through a transmission belt; the above-mentioned lifting slide 113 is slidably connected to the linear slide rail, the side of the lifting slide 113 is threadedly connected to the screw through the screw seat, and the lifting motor 112 drives the screw to rotate. The rod drives the lifting support 111 to move up and down through the screw seat.

As shown in Figure 28, this application also provides a manufacturing process of a battery core manufacturing device, including the following process steps:

S1. Diaphragm unwinding: The diaphragm tape to be coated is rotated and exported through the unwinding mechanism;

S2. Diaphragm tension detection: The diaphragm tape exported by the diaphragm releasing mechanism in step S1 enters the tension detection mechanism, and the tension in the length direction of the diaphragm tape when it is exported is detected in real time;

S3. Diaphragm tension adjustment: The diaphragm belt exported by the diaphragm releasing mechanism in step S1 enters the tension swing rod mechanism, and the tension swing rod mechanism drives the rotation angle of the tension roller to control the tension of the diaphragm belt export;

S4. Diaphragm buffering: The diaphragm tape exported by the diaphragm releasing mechanism in step S1 enters the diaphragm buffering mechanism. The diaphragm buffering mechanism caches the diaphragm exported by the diaphragm releasing mechanism to a certain length, and cooperates with the film pulling mechanism to release the diaphragm belt when pulling the film;

S5. Main traction and width correction of the diaphragm: The diaphragm belt exported from the diaphragm release mechanism in step S1 enters the main traction mechanism, clamps the diaphragm belt from the left and right sides of the diaphragm belt through the main traction mechanism, and actively drives the diaphragm belt along its direction through rotational power. Movement in the length direction; and the main traction mechanism drives the clamped diaphragm belt to move in the width direction to correct the width of the diaphragm belt;

S6. Film guide and sandwich film: The diaphragm belt exported from the main traction mechanism in step S5 sequentially enters the film guide component of the film pull mechanism and the gap space between the two groups of film pull components below the guide film assembly, and passes through the two groups of pull film components. Membrane module clamping;

S7, left and right pulling film covering and lifting to avoid air: In step S6, the pulling film component clamps the diaphragm belt and drives the diaphragm belt to move linearly back and forth above the lamination platform along the left and right directions of the lamination platform, so as to open the diaphragm belt horizontally and then pull it and cover it on the stacking platform or pole piece; and during the process of pulling the membrane on the left and right, the membrane pulling assembly is driven by the membrane lifting assembly to rise to a certain height synchronously and cooperatively, so as to avoid the interference with the stacked pole piece when the diaphragm belt is pulled out horizontally. Movement interference;

S8. Film-drawing angle detection: In step S7, the film-drawing component moves linearly back and forth along the left or right side of the stacking platform respectively. During the film-drawing process, the reaction force of the diaphragm drives the film-drawing component on the right side to rotate to the right or drives the left side. The film-drawing component on the side rotates to the left; the angle during the rotation of the film-drawing component is detected by the angle detector in real time, and the detection information is sent to the industrial computer. The industrial computer sends instructions to the main traction mechanism to control according to the film-drawing rotation angle. The length of the main traction mechanism traction diaphragm;

S9. Pressing film: In step S7, when the diaphragm belt is pulled out by the pulling film component and covered to the lamination platform or pole piece, the pressing film components on the front and rear sides of the lamination platform press the horizontally opened diaphragm belt to prevent the film from pulling. During the process, the stacked diaphragm layer is brought up;

S10. Lamination: The lamination mechanism takes out the positive or negative electrode sheets and stacks them horizontally on the diaphragm belt that was opened horizontally in step S7;

S11. Cyclic alternating lamination and lamination: cycle steps S7, S9, and S10. After lamination on the lamination platform, stack the positive electrode sheet or negative electrode sheet. After the separator belt is pressed by the lamination pressing assembly, the film pulling mechanism re-coats the film to The surface of the positive electrode piece or the negative electrode piece is circulated in this way until a battery core electrode group is formed.

In one embodiment, the manufacturing process of the battery cell manufacturing device also includes platform blanking: after forming the battery core pole piece group, the stacking platform moves linearly on the upper slide rail to the lowering station, and is transferred to the lower station via the lifting mechanism. Lower the slide rail and move straight along the slide rail to the unloading station.

In one embodiment, the manufacturing process of the battery cell manufacturing device also includes the supply of an empty platform: after the stacked battery cell pole piece group on the lamination platform is taken out at the unloading station, the empty lamination platform moves along the slide rail to At the lifting mechanism, the lifting mechanism transfers the lamination platform to the upper slide rail, and the lamination platform moves along the upper slide rail to the lamination station.

This application designs a rotatable film pulling method to overcome the influence of linear detection friction and spring force, greatly improving the detection accuracy, and through real-time detection of the film pulling angle in conjunction with the main traction function, through the detected film pulling angle Feedback, and achieve accurate film placement through main traction. At the same time, the slide-type guide film is used to reduce film transmission errors and ensure the stability, movement accuracy and flatness of the film. The battery manufacturing device and its manufacture Craftsmanship.

In response to the integration needs of the battery cell automation production line, this application creatively uses the lamination platform as both the lamination carrying and pole piece carrying structure. The upper and lower rails are spaced up and down to form the movement path of the lamination platform. Lifting mechanisms are respectively provided on both sides of the slide rail and the lower rail to form a rectangular movement path. The upper slide rail realizes the supply of empty platforms, and the lower rail is used to load the full platform of the pole piece group after stacking. There is a The stacking station has a unloading station at one end of the lower rail extending outward. Multiple lamination platforms flow between the lamination station and the unloading station to achieve cyclic supply of platforms. After lamination is completed, the full platform moves After leaving, the next empty platform is connected to the lamination station for lamination, which effectively reduces the waiting time between lamination and blanking, while improving the automation of the entire line and greatly increasing the production capacity of the entire line.

This application focuses on research on the cell manufacturing process of lithium-ion power batteries. Through independent research and development, independent innovation has been carried out in three major aspects, including:

1. This application creatively designs the main traction mechanism. The main traction mechanism includes a diaphragm correction component, a passive film pressing roller group and an active film pressing roller group. The diaphragm correction component is set on the support vertical plate, and the diaphragm correction component is along the width direction of the diaphragm. Outputs linear power; the active laminating roller group and the passive laminating roller group are connected to the diaphragm correction component at intervals, and are driven by the diaphragm guidance component to move linearly along the width direction of the diaphragm. The diaphragm belt passes through the active laminating roller group and the passive laminating roller group. The gap space between the roller groups; the passive lamination roller group is close to or away from the active lamination roller group to compress or loosen the diaphragm belt; the active lamination roller group has rotational power, and the rotational power is transmitted to the compressed diaphragm belt, In order to drive the diaphragm belt to move along its length. After the diaphragm belt passes through the gap space between the active pressure roller assembly and the passive pressure roller assembly, the passive pressure roller assembly is driven by the film pressing drive assembly and approaches the active pressure roller assembly, thereby compressing the diaphragm belt. It outputs rotational power and drives the diaphragm belt to be pulled out through the static friction between the two pressure rollers, so as to achieve controlled release of precise diaphragm length in conjunction with the subsequent film drawing assembly. At the same time, the active pressing roller group and the passive pressing roller of the present application are driven by the diaphragm correction component to move linearly along the width direction of the diaphragm belt, realizing the position correction of the diaphragm width, and effectively solving the problem that occurs when the diaphragm is pulled out during the lamination process. The problem of position offset ensures the accuracy of lamination.

2. This application creatively designs a film pulling mechanism. The film pulling mechanism includes a film pulling component, a film driving component, a film lifting component and a film guiding component. The film driving component is set on the supporting vertical plate; the film lifting component It is arranged on the output end of the film-drawing drive component, and is driven by the film-drawing drive component to move horizontally and linearly along the left and right directions of the stacking platform; the output end of the film-drawing lifting component is set in the vertical direction; the film guide component and the film-drawing component They are arranged at intervals along the vertical direction and are respectively connected to the output ends of the film-drawing lifting components. A film-conducting gap is formed in the guiding film component. The diaphragm belt passes through the guiding film gap and then enters between the two groups of film-drawing components; the film-drawing lifting component Drive the synchronous lifting and lowering movement of the conductive film component and the pulling film component, so that the pulling film component can raise the height of the pole piece thickness when pulling out the diaphragm above the lamination platform, and avoid interference with the movement of the pole piece on the lamination platform during lamination. The film-drawing module of this application creatively adopts a rotatable structure. The film-drawing module uses a film-drawing support plate as a connection carrier. The bottom of the film-drawing support plate is rotatably provided with a film-drawing rotation shaft, and the film-drawing rotation shaft serves as a support. axis, the film-drawing swivel seat is connected to the film-drawing rotating shaft and can freely rotate around it. The upper side wall of the film-drawing swivel seat is provided with a detection support extending upward to the outside of the film-drawing support plate. The detection support is connected to the film-drawing support plate. There is an installation gap between the outer side walls of the support plates, and a tension detector is arranged horizontally in the installation gap in a direction perpendicular to the outer side walls of the film-stretching support plates; a detection cylinder is installed outside the tension detector. The lower part of the film-drawing swivel seat is provided with a film-drawing roller that is horizontally rotatable along the width direction of the diaphragm belt through the roller support; the diaphragm belt passes through the gap space between the film-drawing rollers of the two groups of film-drawing components. When the two sets of film-drawing assemblies drive the middle diaphragm belt to move left and right in a straight line above the lamination platform for film coating, the reaction force of the diaphragm belt on the film-drawing roller is transmitted to the film-drawing roller and pushes the film-drawing roller and the film-drawing swivel seat to rotate. When the film rotating base rotates, it drives the detection support and the tension detector on it to approach the film-drawing support plate from the outside. The detection end of the tension detector presses the outer wall of the film-drawing support plate, and the feedback is fed back through the outer wall of the film-drawing support plate. The force is applied to the tension detector to detect the force transmitted from the diaphragm belt in real time; compared with the traditional linear sliding detection, this type of rotational detection avoids the contact friction during the linear sliding process and reduces the impact of friction on Interference effect on the detection accuracy; and compared with the existing technology that uses unstable springs to provide the film-pushing force of the film-pull component, the variability of the spring force also affects the detection of the tension value, and a constant force is output through the detection cylinder. The film-drawing rollers of the two groups of film-drawing components can be pressed tightly against the diaphragm during the film-drawing process, thereby effectively reducing the changing pressure when the diaphragm is pressed in the existing technology while ensuring the normal progress of the film-drawing process. The impact on the accuracy of detecting tension effectively improves the accuracy of detecting tension.

3. This application creatively designed a lamination platform. The lamination platform of this application has the same function as the traditional lamination platform, that is, it is used to carry the pole pieces and diaphragms, and assists in compressing the diaphragms during the lamination process. Based on the above process Requirements, the lamination platform of this application includes a lamination support set in the middle for horizontally supporting pole pieces and diaphragms, and also includes lamination components disposed on the front and rear sides of the lamination support, and the lamination components are used for After the diaphragm is covered on the lamination support or the pole piece, press the horizontally covered diaphragm on the lamination support for subsequent lamination. The difference between this application and the prior art is that the lamination assembly of this application completely adopts a lamination method that is different from the prior art. The upper slide and the lower slide, which are horizontally spaced up and down, serve as the load-bearing and guide during the lamination movement. The carrier and tablet press realize movement from the horizontal and vertical directions during the cyclic movement along the movement path formed by the upper slide and the lower slide, which not only ensures the requirement for vertical downward pressure during film pressing, but also achieves It retracts outward in the horizontal direction to avoid interference with the lamination movement, and this slide guide structure forms a stable motion path for lamination. Compared with the existing lamination process, the transmission path is reduced. The transmission error is reduced, and the stable motion guide structure ensures the stability during the tableting movement and effectively improves the accuracy of the film pressing. Specifically, the lamination component of the present application includes a lamination support plate, a horizontal power component, a lamination component, a slide changer component and a slide component. The lamination support plate is horizontally arranged on the front or rear side of the lamination support; The horizontal power component is arranged on the lamination support plate, and the power output direction is set horizontally along the direction perpendicular to the front side or the rear side of the lamination support; the lamination component is connected to the output end of the horizontal power component, and is vertically connected to the output end of the horizontal power component. The output end of the horizontal power component is movably connected in the straight direction; the slide change component is arranged on the horizontal power component, and the output end is arranged in the vertical direction and connected to the lamination component; the slide component is disposed on the lamination component. On the support plate, the slide component includes an upper slide and a lower slide that extend horizontally along the power output direction of the horizontal power component; the laminating component is driven by the horizontal power component to move horizontally and linearly along the upper slide or the lower slide, and is replaced by the slide. The components are driven to transfer between the upper slide and the lower slide.

The embodiments of the present application are only to introduce the specific implementation, and are not intended to limit the scope of protection. Those skilled in the industry can make certain modifications inspired by this embodiment. Therefore, any equivalent changes or modifications made in accordance with the patent scope of this application fall within the scope of the patent claims of this application.

Claims (15)

1. An electric core making device includes a horizontally arranged machine platform (1) and a frame (2) arranged on the machine platform (1). The side of the frame (2) is provided with supporting vertical plates; wherein, The battery core making device also includes a main pulling mechanism (7), a film pulling mechanism (8) and a lamination platform (9).

   The main traction mechanism (7) is arranged on the support vertical plate. The main traction mechanism (7) presses the diaphragm belt from both sides of the diaphragm belt and drives the diaphragm belt to be pulled out into the film pulling mechanism (8);

   The film-drawing mechanism (8) is arranged downstream of the main traction mechanism (7) in the film-drawing direction; the film-drawing mechanism (8) includes two groups of film-drawing components, with the middle part of the two groups of film-drawing components as the fulcrum in the vertical direction. Rotatably arranged, the lower parts of the two groups of film-drawing components press the diaphragm belt from both sides of the diaphragm belt. The upper parts of the two groups of film-drawing components are provided with tension detection components. The two groups of film-drawing components drive the diaphragm belt along the left and right sides of the lamination platform. When the diaphragm belt is moved and pulled out, the reaction force of the diaphragm belt causes the diaphragm pulling component to rotate. When the diaphragm pulling component rotates, the force is transmitted to the tension detection component to detect the diaphragm tension;

   The lamination platform (9) is arranged on the machine (1). The lamination platform (9) includes a lamination support (91) and lamination components (92) provided on the front and rear sides of the lamination support (91). ), the lamination assembly (92) is provided with an upper slideway and a lower slideway spaced up and down along the vertical direction. The upper slideway and the lower slideway are arranged horizontally. The lamination component of the lamination assembly (92) is along the upper slideway and the lower slideway. The lower slide moves cyclically to press the diaphragm on the lamination support (91) from the left or right side of the lamination support (91) during the lamination process.
2. A battery core manufacturing device according to claim 1, further comprising:

   A film release mechanism (3) is provided on the support vertical plate and is used to wind the diaphragm tape and release the diaphragm tape;

   And a tension detection mechanism (4) provided on the support vertical plate for tension detection during the pulling-out process of the diaphragm belt;

   And a tension swing bar mechanism (5) provided on the support vertical plate for tension and relaxation adjustment during the pulling-out process of the diaphragm belt;

   And a diaphragm buffering mechanism (6) provided on the support vertical plate for buffering during the pulling-out process of the diaphragm belt;

   After the diaphragm is released through the film releasing mechanism (3), it passes through the tension detection mechanism (4), the tension swing bar mechanism (5) and the diaphragm buffering mechanism (6) in sequence, and then enters the main traction mechanism (7).
3. An electric core manufacturing device according to claim 1, wherein the main traction mechanism (7) includes a diaphragm correction component, a passive film pressing roller group and an active film pressing roller group, wherein the diaphragm correction component is provided On the support vertical plate, the diaphragm correction component outputs linear power along the width direction of the diaphragm; the active film pressing roller group and the passive film pressing roller group are connected to the diaphragm correction component at intervals, and are driven by the diaphragm correction component to move linearly along the diaphragm width direction. Movement, the diaphragm belt passes through the gap space between the active lamination roller group and the passive lamination roller group; the passive lamination roller group is close to or away from the active lamination roller group to compress or loosen the diaphragm belt; the active lamination roller group The lamination roller group has rotational power, and the rotational power is transmitted to the pressed diaphragm belt to drive the diaphragm belt to move along its length direction.
4. A battery core manufacturing device according to claim 3, wherein the main traction mechanism (7) further includes a film pressing drive assembly, and the film pressing drive assembly is connected to the output end of the diaphragm correction assembly; the passive pressing device The film roller group is connected to the output end of the film pressing drive assembly, and is driven by the film pressing drive assembly to move closer to or away from the active film pressing roller group.
5. An electric core making device according to claim 1, wherein the film pulling mechanism (8) further includes a film pulling drive component, a film lifting component and a film conduction component, wherein the film pulling drive component is configured On the supporting vertical plate; the film-drawing lifting component is arranged on the output end of the pulling-film driving component, and is driven by the pulling-film driving component to move horizontally and linearly along the left and right directions of the stacking platform (9); the output end of the pulling film lifting component Set in the vertical direction; the conductive film component and the film-drawing component are spaced apart along the vertical direction, and are respectively connected to the output end of the film-drawing lifting component. A conductive film gap is formed in the conductive film component, and the diaphragm belt passes through the conductive film. After the gap, it enters between the two sets of film-drawing components; the film-drawing lifting component drives the film-guiding component and the film-drawing component to move up and down synchronously, so that the film-drawing component can be lifted when the diaphragm is pulled out above the lamination platform to avoid contact with the lamination platform during lamination. The pole piece motion interferes with the upper pole piece.
6. An electric core manufacturing device according to claim 5, wherein the film-drawing component includes a film-drawing support plate (810), a film-drawing rotating member, a tension detection member, an angle detection member, and a film-drawing roller (818) , wherein the film-drawing support plate (810) is vertically connected below the film guide assembly; the film-drawing rotating member is rotatably connected to the film-drawing support plate (810); and the tension detection member is arranged on the film-drawing support plate (810). The upper outer side of the film rotating member extends horizontally toward the film supporting plate (810) until its detection end contacts the film supporting plate (810). The film rotating member is rotated by the reaction force of the diaphragm belt and resists the film. The support plate (810), the reaction force of the film-drawing support plate (810) on the tension detection part is detected in real time by the tension detection part; the angle detection part is set on the film-drawing rotating part to detect in real time the film-drawing rotating part by the diaphragm belt The angle of rotation due to the reaction force; the film-drawing roller (818) is rotatably arranged at the lower part of the film-drawing rotating member, and the diaphragm belt is clamped by the film-drawing rollers (818) of the two groups of film-drawing components, and the film-drawing roller (818) is The reaction force of the belt is transmitted to the film pulling roller (818).
7. An electric core manufacturing device according to claim 1, wherein the lamination component (92) includes a lamination support plate (921), a horizontal power component, a lamination component, a slide change component and a slide component. , wherein the lamination support plate (921) is horizontally arranged on the left or right side of the lamination support (91); the horizontal power component is disposed on the lamination support plate (921), and the power output direction is along Perpendicular to the lamination support (91) The front side or the rear side is arranged horizontally; the lamination component is connected to the output end of the horizontal power component, and is movably connected to the output end of the horizontal power component in the vertical direction; the slide changer The component is arranged on the horizontal power component, and the output end is arranged in the vertical direction and connected to the lamination component; the slide component is disposed on the lamination support plate (921), and the slide component includes a path along the horizontal power component. The upper slideway and the lower slideway extend horizontally in the direction of power output; the lamination component is driven by the horizontal power component to move horizontally and linearly along the upper slideway or the lower slideway, and is driven by the slideway replacement component to transfer between the upper slideway and the lower slideway. .
8. An electric core manufacturing device according to claim 7, wherein one end of the upper slide and the lower slide close to the lamination support (91) is an open structure, and the other end is provided with a flexible opening, and the lamination component is The vertical power drive is transferred from the lower slide to the upper slide at the open structure at one end of the upper slide and the lower slide and at the flexible opening at the other end; the flexible openings are automatically sealed so that the lamination component can move linearly on the upper slide.
9. A battery core manufacturing device according to claim 8, wherein the slide component includes a slide support plate (9210), an upper slide (9215), a lower slide (9216) and a flexible sealing member, wherein, The slide support plate (9210) is arranged vertically on the lamination support plate (921), and extends in a direction perpendicular to the front side or rear side of the lamination support (91); the upper slide (9210) 9215) and the lower slide (9216) are spaced up and down on one side wall of the slide support plate (9210), and extend in the same direction as the slide support plate (9210); the upper slideway (9215) extends horizontally , and a flexible opening is provided at one end away from the lamination support (91); the two ends of the slideway (9216) are provided with transitional slopes, and the transition slopes extend downward toward the direction close to the lamination support (91); so The flexible sealing member is arranged at the flexible opening.
10. An electric core manufacturing device according to claim 9, wherein the flexible sealing member includes a sealing support (9211), a sealing rocker (9212), a sealing spring (9213) and a sealing plate (9214), wherein , the sealing support (9211) is arranged on the other side wall of the slide support plate (9210); one end of the sealing swing block (9212) is rotatably connected to the sealing support (9211), and the other end Extends to the flexible opening and is connected to the sealing spring (9213) provided on the sealing support plate (9210); the sealing plate (9214) is horizontally connected to the sealing swing block (9212) and is located in the flexible opening, naturally In this state, the elastic force of the sealing spring (9213) drives the sealing plate (9214) downward through the sealing pendulum block (9212), so that the sealing plate (9214) maintains a horizontal state and is fastened to the flexible opening to seal the flexible opening. At the flexible sealing point, the slide cylinder (928) drives the lifting slide (926) to move upward, and the lifting slide (926) drives the guide wheel (929) to push the sealing plate (9214) upward, so that the guide wheel (929) moves down the slide (9216) enters the upper slideway (9215) through the flexible opening. After the guide wheel (929) completely enters the upper slideway (9215), the sealing plate (9214) is automatically pulled to the level by the sealing spring (9213) so that the guide wheel (929) ) rolls straight on the upper slide (9215).
11. An electric core made of a sliding track rotating lamination platform according to claim 1, which further includes: a slide rail (10) and two sets of lifting mechanisms (11);

    The slide rail (10) includes an upper slide rail and a lower slide rail arranged at parallel intervals along the vertical direction. Lifting stations are respectively provided at corresponding positions on both sides of the upper slide rail and the lower slide rail, and the upper slide rail is provided with laminations. Work station, one end of the lower rail is equipped with a unloading station;

    The lamination platform is slidably disposed on the slide rail (10), and is driven by a conveyor belt on the side of the slide rail (10) to move linearly;

    The two sets of lifting mechanisms (11) are respectively installed at the lifting stations on both sides. Each set of lifting mechanisms (11) is connected to the stacking platform and drives the stacking platform to transfer between the upper slide rail and the lower slide rail.
12. A slide-track rotating lamination platform made of electric cores according to claim 11, wherein each set of the lifting mechanism (11) includes a lifting support (111), a lifting motor (112) and a lifting slide. (113);

    The lifting support (111) is arranged vertically, and a screw rod is vertically provided in the middle of the lifting support (111). Both ends of the screw rod are rotatably connected to the bottom plate and the top plate of the lifting support (111). Two linear slide rails are vertically provided on one side wall of the support (111);

    The lifting motor (112) is arranged on the bottom plate of the lifting support (111), and the output shaft is connected to the screw rod through a transmission belt;

    The lifting slide (113) is slidably connected to the linear slide rail. The side of the lifting slide (113) is threadedly connected to the screw through a screw seat. The lifting motor (112) drives the screw to rotate. The lifting movement of the lifting support (111) is driven by the screw seat.
13. A manufacturing process of the battery core manufacturing device according to any one of claims 1 to 12, including the following process steps:

    S1. Diaphragm unwinding: The diaphragm tape to be coated is rotated and exported through the unwinding mechanism;

    S2. Diaphragm tension detection: The diaphragm tape exported by the diaphragm releasing mechanism in step S1 enters the tension detection mechanism, and the tension in the length direction of the diaphragm tape when it is exported is detected in real time;

    S3. Diaphragm tension adjustment: The diaphragm belt exported by the diaphragm releasing mechanism in step S1 enters the tension swing rod mechanism, and the tension swing rod mechanism drives the rotation angle of the tension roller to control the tension of the diaphragm belt export;

    S4. Diaphragm buffering: The diaphragm tape exported by the diaphragm releasing mechanism in step S1 enters the diaphragm buffering mechanism. The diaphragm buffering mechanism caches the diaphragm exported by the diaphragm releasing mechanism to a certain length, and cooperates with the film pulling mechanism to release the diaphragm belt when pulling the film;

    S5. Main traction and width correction of the diaphragm: The diaphragm belt exported from the diaphragm release mechanism in step S1 enters the main traction mechanism, clamps the diaphragm belt from the left and right sides of the diaphragm belt through the main traction mechanism, and actively drives the diaphragm belt along its direction through rotational power. Longitudinal movement; and the main traction mechanism drives the clamping The rear diaphragm belt moves along its width direction to correct the width of the diaphragm belt;

    S6. Film guide and sandwich film: The diaphragm belt exported from the main traction mechanism in step S5 sequentially enters the film guide component of the film pull mechanism and the gap space between the two groups of film pull components below the guide film assembly, and passes through the two groups of pull film components. Membrane module clamping;

    S7, left and right pulling film covering and lifting to avoid air: In step S6, the pulling film component clamps the diaphragm belt and drives the diaphragm belt to move linearly back and forth above the lamination platform along the left and right directions of the lamination platform, so as to open the diaphragm belt horizontally and then pull it and cover it on the stacking platform or pole piece; and during the process of pulling the membrane on the left and right, the membrane pulling assembly is driven by the membrane lifting assembly to rise to a certain height synchronously and cooperatively, so as to avoid the interference with the stacked pole piece when the diaphragm belt is pulled out horizontally. Movement interference;

    S8. Film-drawing angle detection: In step S7, the film-drawing component moves linearly back and forth along the left or right side of the stacking platform respectively. During the film-drawing process, the reaction force of the diaphragm drives the film-drawing component on the right side to rotate to the right or drives the left side. The film-drawing component on the side rotates to the left; the angle during the rotation of the film-drawing component is detected by the angle detector in real time, and the detection information is sent to the industrial computer. The industrial computer sends instructions to the main traction mechanism to control according to the film-drawing rotation angle. The length of the main traction mechanism traction diaphragm;

    S9. Pressing film: In step S7, when the diaphragm belt is pulled out by the pulling film component and covered to the lamination platform or pole piece, the pressing film components on the front and rear sides of the lamination platform press the horizontally opened diaphragm belt to prevent the film from pulling. During the process, the stacked diaphragm layer is brought up;

    S10. Lamination: The lamination mechanism takes out the positive or negative electrode sheets and stacks them horizontally on the diaphragm belt that was opened horizontally in step S7;

    S11. Cyclic alternating lamination and lamination: cycle steps S7, S9, and S10. After lamination on the lamination platform, stack the positive electrode sheet or negative electrode sheet. After the separator belt is pressed by the lamination pressing assembly, the film pulling mechanism re-coats the film to The surface of the positive electrode piece or the negative electrode piece is circulated in this way until a battery core electrode group is formed.
14. The manufacturing process of the battery core manufacturing device according to claim 13, further comprising platform unloading: after forming the battery core pole piece group, the stacking platform moves linearly on the upper slide rail to the lowering station, and is transferred by the lifting mechanism. Go to the lower rail and move straight along the lower rail to the unloading station.
15. The manufacturing process of the battery cell manufacturing device according to claim 14, further comprising an empty platform supply: after the stacked battery cell pole piece group on the lamination platform is taken out at the blanking station, the empty lamination platform moves along the slide rail To the lifting mechanism, the lifting mechanism transfers the lamination platform to the upper slide rail, and the lamination platform moves along the upper slide rail to the lamination station.