Composite lamination equipment and production line

Abstract

This invention provides a composite lamination apparatus and production line. The apparatus includes: a positive electrode unwinding assembly that feeds a positive electrode sheet to a lamination assembly; a negative electrode unwinding assembly that feeds a negative electrode sheet to the lamination assembly; a first separator unwinding assembly that feeds a first separator sheet to the lamination assembly; the lamination assembly laminating the positive and negative electrode sheets onto opposite sides of the first separator sheet to form a pre-fabricated composite electrode sheet, which is then conveyed to a lamination assembly; a second separator unwinding assembly that feeds a second separator sheet to the lamination assembly; and the lamination assembly laminating the pre-fabricated composite electrode sheet with the second separator sheet to form a composite electrode sheet. This invention provides a composite lamination apparatus and production line that improves the efficiency of electrode production by setting up a lamination assembly capable of continuously laminating positive electrode sheets, negative electrode sheets, and separator sheets.

Description

Technical Field

[0001] This invention relates to the field of energy equipment technology, and in particular to a composite lamination device and production line. Background Technology

[0002] With the continuous expansion of the lithium battery market demand in the past two years, especially the increasing efficiency requirements of the power battery market for stacking machines, traditional Z-type stacking machines can no longer meet the market demand. Summary of the Invention

[0003] This invention provides a composite lamination device to address the shortcomings of existing Z-type lamination machines that can no longer meet market demands. By setting up a lamination assembly capable of continuously laminating positive electrode sheets, negative electrode sheets, and separator sheets, the efficiency of lamination production is improved.

[0004] The present invention also provides a production line.

[0005] According to a first aspect of the present invention, a composite lamination device includes: a lamination assembly, a positive electrode unwinding assembly, a negative electrode unwinding assembly, a first diaphragm unwinding assembly, a second diaphragm unwinding assembly, and a composite assembly;

[0006] The positive electrode unwinding assembly feeds the positive electrode sheet to the sheet-making assembly;

[0007] The negative electrode unwinding assembly feeds the negative electrode sheet to the sheet-making assembly;

[0008] The first diaphragm unwinding assembly feeds the first diaphragm sheet to the sheet-making assembly;

[0009] The electrode assembly laminates the positive electrode and the negative electrode onto two opposite sides of the first separator to form a pre-fabricated composite electrode, which is then conveyed to the composite assembly.

[0010] The second diaphragm unwinding assembly feeds the second diaphragm sheet into the composite assembly;

[0011] The composite component combines the pre-fabricated composite electrode sheet with the second diaphragm sheet to form a composite electrode sheet.

[0012] According to one embodiment of the present invention, the sheet-making assembly includes: a positive electrode ear mold roller group, a positive electrode sheet cutting mold roller group, a positive electrode drive pressure roller group, a negative electrode ear mold roller group, a negative electrode sheet cutting mold roller group, and a negative electrode drive pressure roller group.

[0013] The positive electrode sheet sequentially enters the positive electrode ear mold roller group, the positive electrode sheet cutting mold roller group and the positive electrode drive pressure roller group;

[0014] The negative electrode sheet sequentially enters the negative electrode ear mold roller group, the negative electrode sheet cutting mold roller group, and the negative electrode drive pressure roller group;

[0015] The first diaphragm enters the positive electrode drive roller group and the negative electrode drive roller group to achieve composite with the positive electrode sheet and the negative electrode sheet respectively;

[0016] The positive electrode tab molding roller group and the negative electrode tab molding roller group are respectively used to cut tabs on the positive electrode sheet and the negative electrode sheet;

[0017] The positive electrode cutting die roller group and the negative electrode cutting die roller group are used for cutting the positive electrode and the negative electrode, respectively.

[0018] The positive electrode drive roller group and the negative electrode drive roller group are used to provide power for the input and compounding of the positive electrode sheet, the negative electrode sheet and the first separator sheet.

[0019] According to one embodiment of the present invention, the positive electrode ear mold roller group includes: a first positive electrode ear pressure roller, a second positive electrode ear pressure roller, and a first positive electrode waste chamber;

[0020] The first pressure roller and the second pressure roller of the positive electrode tab are tangentially arranged to cut the tab on the positive electrode sheet;

[0021] The first waste chamber for the positive electrode is set at the discharge end of the first pressure roller and the second pressure roller of the positive electrode tab, so as to collect the waste material after the positive electrode tab is cut.

[0022] According to one embodiment of the present invention, the positive electrode cutting die roller group includes: a first positive electrode cutting roller, a second positive electrode cutting roller, a positive electrode cutter, and a second positive electrode waste chamber;

[0023] The first cutting roller and the second cutting roller of the positive electrode roll each other in a rolling engagement, forming a channel for the positive electrode sheet to pass through;

[0024] The positive electrode cutter is spirally arranged on the surface of the first positive electrode cutting roller;

[0025] The surface of the second cutting roller for the positive electrode is provided with a first receiving groove corresponding to the positive electrode cutter, and the first receiving groove is spirally arranged on the surface of the second cutting roller for the positive electrode.

[0026] The second waste chamber of the positive electrode is set at the discharge end of the first cutting roller and the second cutting roller of the positive electrode to collect the waste material after the positive electrode sheet is cut.

[0027] The axial directions of the first and second cutting rollers of the positive electrode form an angle with the conveying direction of the positive electrode sheet.

[0028] According to one embodiment of the present invention, the negative electrode ear mold roller group comprises: a first negative electrode ear pressure roller, a second negative electrode ear pressure roller, and a first negative electrode waste chamber;

[0029] The first pressure roller and the second pressure roller of the negative electrode tab are tangentially arranged to cut the tab on the negative electrode sheet;

[0030] The first waste chamber for the negative electrode is set at the discharge end of the first pressure roller and the second pressure roller of the negative electrode tab, so as to collect the waste material after the negative electrode tab is cut.

[0031] According to one embodiment of the present invention, the negative electrode cutting die roller group includes: a first negative electrode cutting roller, a second negative electrode cutting roller, a negative electrode cutter, and a second negative electrode waste chamber;

[0032] The first cutting roller and the second cutting roller of the negative electrode roll each other in a rolling engagement, forming a channel for the negative electrode sheet to pass through;

[0033] The negative electrode cutter is spirally arranged on the surface of the first negative electrode cutting roller;

[0034] The surface of the negative electrode second cutting roller is provided with a second receiving groove corresponding to the negative electrode cutter, and the second receiving groove is spirally arranged on the surface of the negative electrode second cutting roller;

[0035] The negative electrode second waste chamber is set at the discharge end of the negative electrode first cutting roller and the negative electrode second cutting roller to collect the waste material after the negative electrode sheet is cut.

[0036] The axial directions of the first and second negative electrode cutting rollers form an angle with the conveying direction of the negative electrode sheet.

[0037] According to one embodiment of the present invention, the positive electrode driving roller assembly includes: a first positive electrode driving roller and a second positive electrode driving roller;

[0038] The negative electrode drive roller assembly includes: a first negative electrode drive roller and a second negative electrode drive roller;

[0039] The first positive electrode drive roller and the second positive electrode drive roller are tangentially arranged to realize the input for driving the positive electrode sheet;

[0040] The negative electrode first drive roller and the negative electrode second drive roller are tangentially arranged to realize the input for driving the negative electrode sheet;

[0041] The positive electrode second drive roller and the negative electrode second drive roller are tangentially arranged to drive the first diaphragm.

[0042] According to one embodiment of the present invention, the wafer fabrication assembly further includes: a positive electrode dust removal section;

[0043] The positive electrode dust removal section is located at the input end of the positive electrode drive roller assembly and is located on one side of the first positive electrode drive roller;

[0044] The positive electrode second driving roller is a negative pressure adsorption roller;

[0045] The positive electrode dust removal section and the positive electrode second drive roller cooperate to achieve dust removal on both sides of the positive electrode sheet.

[0046] According to one embodiment of the present invention, the film-making assembly further includes: a negative electrode dust removal section;

[0047] The negative electrode dust removal section is located at the input end of the negative electrode drive roller assembly and is located on one side of the negative electrode first drive roller.

[0048] The negative electrode second driving roller is a negative pressure adsorption roller;

[0049] The negative electrode dust removal section and the negative electrode second drive roller cooperate to achieve dust removal on both sides of the negative electrode sheet.

[0050] According to one embodiment of the present invention, it further includes: a first heating part and a second heating part;

[0051] The first heating part is disposed on the feed end side of the sheet-making assembly relative to the first diaphragm unwinding assembly, so as to preheat the first diaphragm sheet;

[0052] The second heating section is located on one side of the discharge end of the sheet-making assembly to preheat the pre-made composite electrode sheet.

[0053] According to one embodiment of the present invention, the composite component includes: an electrode composite roller group and an electrode cutting roller group;

[0054] The sheet-making assembly feeds the pre-made composite electrode sheet to the electrode composite roller group;

[0055] The second diaphragm unwinding assembly feeds the second diaphragm sheet to the electrode composite roller assembly;

[0056] The electrode composite roller assembly combines the pre-fabricated composite electrode and the second diaphragm sheet to form the target composite electrode.

[0057] The electrode cutting roller group cuts the target composite electrode to form a composite electrode unit.

[0058] According to one embodiment of the present invention, it further includes: a third heating unit and a fourth heating unit;

[0059] The third heating section is located at the feed end of the electrode composite roller group to preheat the second diaphragm sheet;

[0060] The fourth heating section is disposed between the electrode composite roller group and the electrode cutting roller group to preheat the target composite electrode.

[0061] According to one embodiment of the present invention, it further includes: a stacking box and a conveying unit;

[0062] The stacking box and the electrode cutting roller group are connected by the conveying unit to store the cut composite electrode units.

[0063] According to one embodiment of the present invention, it further includes: a quality inspection department and a waste bin;

[0064] The quality inspection department is located between the electrode cutting roller group and the stacking box to perform quality inspection on the cut composite electrode unit;

[0065] The waste bin is located between the quality inspection department and the stacking bin to collect the scrapped composite electrode units.

[0066] According to one embodiment of the present invention, the conveying unit includes: a first negative pressure conveying unit, a second negative pressure conveying unit, and a third negative pressure conveying unit;

[0067] The first negative pressure conveying unit, the second negative pressure conveying unit, and the third negative pressure conveying unit are connected to each other to form a mechanism for conveying the composite electrode unit;

[0068] The quality inspection department is set up corresponding to the first negative pressure conveying unit;

[0069] The waste bin is positioned corresponding to the second negative pressure conveying unit, and the conveying surface of the second negative pressure conveying unit faces the waste bin.

[0070] According to a second aspect of the present invention, a production line is provided having the above-described composite lamination apparatus.

[0071] The above-mentioned one or more technical solutions of the present invention have at least one of the following technical effects: The composite lamination device and production line provided by the present invention improves the efficiency of lamination production by setting up a lamination assembly capable of continuously laminating positive electrode sheets, negative electrode sheets and separator sheets.

[0072] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0073] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0074] Figure 1 This is one of the schematic diagrams showing the arrangement of the composite stacking device provided by the present invention;

[0075] Figure 2 This is a schematic diagram showing the arrangement of the wafer-making components in the composite wafer stacking device provided by the present invention;

[0076] Figure 3 This is the second schematic diagram of the arrangement relationship of the composite stacking device provided by the present invention;

[0077] Figure 4 This is one of the schematic diagrams showing the arrangement relationship between the positive electrode cutting die roller group and the positive electrode sheet in the composite lamination device provided by the present invention;

[0078] Figure 5 This is one of the schematic diagrams showing the arrangement relationship between the negative electrode cutting die roller group and the negative electrode sheet in the composite lamination device provided by the present invention;

[0079] Figure 6 This is the second schematic diagram showing the arrangement relationship between the positive electrode cutting die roller group and the positive electrode sheet in the composite lamination device provided by the present invention.

[0080] Figure 7 This is the second schematic diagram showing the arrangement of the negative electrode cutting die roller group and the negative electrode sheet in the composite lamination device provided by the present invention.

[0081] Figure 8 This is a schematic diagram of the arrangement of the positive electrode cutting die roller group in the composite lamination device provided by the present invention;

[0082] Figure 9 This is a schematic diagram of the arrangement of the negative electrode cutting die roller group in the composite stacking device provided by the present invention;

[0083] Figure 10 This is a schematic diagram showing the arrangement relationship between the first pressure roller of the positive electrode tab and the positive electrode blade in the composite lamination device provided by the present invention.

[0084] Figure 11 yes Figure 10 Enlarged schematic diagram of part A;

[0085] Figure 12 This is a schematic diagram showing the arrangement relationship between the first pressure roller of the negative electrode lug and the negative electrode blade in the composite lamination device provided by the present invention.

[0086] Figure 13 yes Figure 12 Enlarged schematic diagram of part B;

[0087] Figure 14 This is a schematic diagram of the arrangement of the positive electrode unwinding assembly in the composite lamination device provided by the present invention;

[0088] Figure 15 This is a schematic diagram showing the arrangement of the negative electrode unwinding assembly in the composite lamination device provided by the present invention.

[0089] Figure 16 This is a schematic diagram showing the arrangement of the first diaphragm unwinding assembly in the composite stacking device provided by the present invention.

[0090] Figure 17 This is a schematic diagram showing the arrangement of the second diaphragm unwinding assembly in the composite stacking device provided by the present invention.

[0091] Figure 18 This is a schematic diagram showing the arrangement of the cutting tabs of the positive or negative electrode in the composite stacking device provided by the present invention.

[0092] Figure 19 This is a schematic diagram showing the arrangement of the cut positive or negative electrode sheets in the composite stacking device provided by the present invention.

[0093] Figure 20 This is a schematic diagram of the structural relationship of the prefabricated composite electrode sheet in the composite stacking device provided by the present invention;

[0094] Figure 21 This is a schematic diagram of the structural relationship of the composite electrode unit in the composite stacking device provided by the present invention.

[0095] Figure label:

[0096] 10. Film production components;

[0097] 11. Positive electrode lug mold roller assembly; 111. First positive electrode lug pressure roller; 112. Second positive electrode lug pressure roller; 113. First positive electrode waste chamber;

[0098] 12. Positive electrode cutting die roller assembly; 121. Positive electrode first cutting roller; 122. Positive electrode second cutting roller; 123. Positive electrode cutter; 124. Positive electrode second waste chamber; 125. First receiving groove; 126. Positive electrode blade; 127. Positive electrode gap adjustment part; 128. Positive electrode blade holder;

[0099] 13. Positive electrode drive roller assembly; 131. First positive electrode drive roller; 132. Second positive electrode drive roller;

[0100] 14. Negative electrode ear mold roller assembly; 141. First negative electrode ear pressure roller; 142. Second negative electrode ear pressure roller; 143. First negative electrode waste chamber;

[0101] 15. Negative electrode cutting die roller assembly; 151. First negative electrode cutting roller; 152. Second negative electrode cutting roller; 153. Negative electrode cutter; 154. Second negative electrode waste chamber; 155. Second receiving groove; 156. Negative electrode blade; 157. Negative electrode gap adjustment part; 158. Negative electrode blade holder;

[0102] 16. Negative electrode drive roller assembly; 161. First negative electrode drive roller; 162. Second negative electrode drive roller;

[0103] 17. Positive electrode dust removal section;

[0104] 18. Negative electrode dust removal section;

[0105] 20. Positive electrode unwinding assembly;

[0106] 30. Negative electrode unwinding assembly;

[0107] 40. First diaphragm unwinding assembly;

[0108] 50. Second diaphragm unwinding assembly;

[0109] 60. Composite components; 61. Electrode composite roller assembly; 62. Electrode cutting roller assembly;

[0110] 70. Positive electrode plate;

[0111] 80. Negative electrode plate;

[0112] 90. First diaphragm;

[0113] 100. Second diaphragm;

[0114] 110. First heating section; 1101. Second heating section; 1102. Third heating section; 1103. Fourth heating section;

[0115] 120. Stacking box;

[0116] 130. Conveying section; 1301. First negative pressure conveying unit; 1302. Second negative pressure conveying unit; 1303. Third negative pressure conveying unit;

[0117] 140. Quality Inspection Department;

[0118] 150. Waste bin. Detailed Implementation

[0119] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0120] In the description of the embodiments of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0121] In some specific embodiments of the present invention, such as Figures 1 to 21 As shown, this solution provides a composite lamination device, including: a lamination assembly 10, a positive electrode unwinding assembly 20, a negative electrode unwinding assembly 30, a first diaphragm unwinding assembly 40, a second diaphragm unwinding assembly 50, and a composite assembly 60; the positive electrode unwinding assembly 20 feeds a positive electrode sheet 70 to the lamination assembly 10; the negative electrode unwinding assembly 30 feeds a negative electrode sheet 80 to the lamination assembly 10; the first diaphragm unwinding assembly 40 feeds a first diaphragm sheet 90 to the lamination assembly 10; the lamination assembly 10 laminates the positive electrode sheet 70 and the negative electrode sheet 80 to opposite sides of the first diaphragm sheet 90 to form a pre-fabricated composite electrode sheet, and feeds it to the composite assembly 60; the second diaphragm unwinding assembly 50 feeds a second diaphragm sheet 100 to the composite assembly 60; the composite assembly 60 laminates the pre-fabricated composite electrode sheet with the second diaphragm sheet 100 to form a composite electrode sheet.

[0122] In detail, the present invention provides a composite stacking device to address the shortcomings of existing Z-type stacking machines that can no longer meet market demands. By setting up a wafer-making assembly 10 that can continuously composite positive electrode 70, negative electrode 80 and separator sheet, the efficiency of wafer production is improved.

[0123] In some possible embodiments of the present invention, the electrode forming assembly 10 includes: a positive electrode tab molding roller group 11, a positive electrode sheet 70 cutting molding roller group, a positive electrode driving pressure roller group 13, a negative electrode tab molding roller group 14, a negative electrode sheet 80 cutting molding roller group, and a negative electrode driving pressure roller group 16; the positive electrode sheet 70 sequentially enters the positive electrode tab molding roller group 11, the positive electrode sheet 70 cutting molding roller group, and the positive electrode driving pressure roller group 13; the negative electrode sheet 80 sequentially enters the negative electrode tab molding roller group 14, the negative electrode sheet 80 cutting molding roller group, and the negative electrode driving pressure roller group 16; the first diaphragm sheet 90 enters the positive electrode... The drive roller group 13 and the negative drive roller group 16 are used to achieve compounding with the positive electrode sheet 70 and the negative electrode sheet 80, respectively; wherein, the positive electrode ear mold roller group 11 and the negative electrode ear mold roller group 14 are used to cut the electrode ears on the positive electrode sheet 70 and the negative electrode sheet 80, respectively; the positive electrode sheet 70 cutting mold roller group and the negative electrode sheet 80 cutting mold roller group are used to cut the positive electrode sheet 70 and the negative electrode sheet 80, respectively; the positive drive roller group 13 and the negative drive roller group 16 are used to provide power for the input and compounding of the positive electrode sheet 70, the negative electrode sheet 80 and the first separator sheet 90.

[0124] Specifically, this embodiment provides an implementation of a sheet-making assembly 10. By setting up a positive electrode ear mold roller group 11, a positive electrode sheet 70 cutting mold roller group and a positive electrode drive pressure roller group 13, the positive electrode sheet 70 can be continuously and uninterruptedly input from the positive electrode unwinding assembly 20 to the sheet-making assembly 10, thereby realizing the roll cutting and compounding of the positive electrode sheet 70.

[0125] Furthermore, the arrangement of the negative electrode ear mold roller group 14, the negative electrode sheet 80 cutting mold roller group and the negative electrode drive pressure roller group 16 enables the negative electrode sheet 80 to be continuously and uninterruptedly input from the negative electrode unwinding assembly 30 to the sheet making assembly 10, thereby realizing the roll cutting and lamination of the negative electrode sheet 80.

[0126] Furthermore, the positive electrode drive roller group 13 and the negative electrode drive roller group 16 provide power to the positive electrode sheet 70 and the negative electrode sheet 80, while also providing input power to the first diaphragm sheet 90.

[0127] In some possible embodiments of the present invention, the positive electrode tab molding roller group 11 includes: a first positive electrode tab pressure roller 111, a second positive electrode tab pressure roller 112, and a first positive electrode waste chamber 113; the first positive electrode tab pressure roller 111 and the second positive electrode tab pressure roller 112 are tangentially arranged to cut the tabs on the positive electrode sheet 70; the first positive electrode waste chamber 113 is arranged corresponding to the discharge end of the first positive electrode tab pressure roller 111 and the second positive electrode tab pressure roller 112 to collect the waste material after the tabs of the positive electrode sheet 70 are cut.

[0128] Specifically, this embodiment provides an implementation of a positive electrode tab molding roller group 11, wherein the positive electrode tab first pressure roller 111 and the positive electrode tab second pressure roller 112 cut the tabs on the positive electrode sheet 70, while the positive electrode first waste chamber 113 recycles the waste material after cutting the tabs.

[0129] In possible implementations, such as Figure 2 and Figure 14 As shown, the positive electrode sheet 70 enters between the first positive electrode tab pressure roller 111 and the second positive electrode tab pressure roller 112 for tab cutting. After tab cutting, the positive electrode sheet 70 enters the positive electrode sheet 70 cutting die roller group for further cutting. Figure 14 The waste material then enters the first waste chamber 113 of the positive electrode.

[0130] In some possible embodiments of the present invention, the positive electrode sheet 70 cutting die roller assembly includes: a first positive electrode cutting roller 121, a second positive electrode cutting roller 122, a positive electrode cutter 123, and a second positive electrode waste chamber 124; the first positive electrode cutting roller 121 and the second positive electrode cutting roller 122 roll in cooperation with each other and form a channel for the positive electrode sheet 70 to pass through; the positive electrode cutter 123 is spirally arranged on the surface of the first positive electrode cutting roller 121; the surface of the second positive electrode cutting roller 122 is provided with... A first receiving groove 125 corresponding to the positive electrode cutter 123 is provided, and the first receiving groove 125 is spirally arranged on the surface of the positive electrode second cutting roller 122; the positive electrode second waste chamber 124 is provided corresponding to the discharge end of the positive electrode first cutting roller 121 and the positive electrode second cutting roller 122 to collect the waste material after the positive electrode sheet 70 is cut; wherein, the axial direction of the positive electrode first cutting roller 121 and the positive electrode second cutting roller 122 forms an angle with the conveying direction of the positive electrode sheet 70.

[0131] Specifically, this embodiment provides an implementation of a positive electrode sheet 70 cutting die roller group. By setting a spiral positive electrode cutter 123 and a first receiving groove 125 on the surface of the first positive electrode cutting roller 121 and the second positive electrode cutting roller 122, continuous electrode sheet cutting is achieved without the need for frequent start and stop of the winding mechanism, which greatly improves the stability of the equipment and the cutting efficiency.

[0132] In a possible implementation, the positive electrode sheet 70 cutting die roller assembly further includes a positive electrode elastic part, which is disposed at the axial position of the positive electrode first cutting roller 121 and is used to adjust the axial position of the positive electrode first cutting roller 121 during the cutting of the positive electrode sheet 70.

[0133] It should be noted that by axially setting the positive electrode elastic part on the first positive electrode cutting roller 121, continuous roller cutting can be achieved between the first positive electrode cutting roller 121 and the second positive electrode cutting roller 122, which solves the problem of frequent start and stop required by the existing cutting technology.

[0134] In a possible implementation, the positive electrode elastic part is an elastic element provided on the end side of the positive electrode first cutting roller 121, which can provide axial elastic force to the positive electrode first cutting roller 121.

[0135] In a possible implementation, the positive electrode elastic part is a spring disposed on the end side of the first cutting roller 121 of the positive electrode.

[0136] In a possible implementation, the positive electrode cutter 123 includes two positive electrode blades 126 spaced apart circumferentially along the positive electrode first cutting roller 121.

[0137] In a possible implementation, the positive electrode cutter 123 includes a positive electrode gap adjustment part 127 and a positive electrode cutter holder 128. The positive electrode blade 126 is disposed on the positive electrode cutter holder 128, and the positive electrode gap adjustment part 127 is disposed between the two positive electrode cutter holders 128 to adjust the distance between the two positive electrode blades 126.

[0138] In a possible implementation, the positive electrode gap adjustment part 127 is an isosceles trapezoid with its upper bottom facing the bottom surface of the mounting groove; the positive electrode knife holder 128 has a trapezoidal cross-sectional shape along the radial direction of the first positive electrode cutting roller 121; wherein, the trapezoidal hypotenuse of the positive electrode gap adjustment part 127 abuts against the trapezoidal hypotenuse of the positive electrode knife holder 128 to adjust the distance between the two positive electrode blades 126.

[0139] In some possible embodiments of the present invention, the negative electrode ear mold roller group 14 includes a negative electrode ear first pressure roller 141, a negative electrode ear second pressure roller 142, and a negative electrode first waste chamber 143; the negative electrode ear first pressure roller 141 and the negative electrode ear second pressure roller 142 are tangentially arranged to cut the electrode ear on the negative electrode sheet 80; the negative electrode first waste chamber 143 is arranged corresponding to the discharge end of the negative electrode ear first pressure roller 141 and the negative electrode ear second pressure roller 142 to collect the waste material after the electrode ear of the negative electrode sheet 80 is cut.

[0140] Specifically, this embodiment provides an implementation of the negative electrode ear mold roller group 14, in which the negative electrode ear first pressure roller 141 and negative electrode ear second pressure roller 142 cut the electrode ear on the negative electrode sheet 80, while the negative electrode first waste chamber 143 recycles the waste material after cutting the electrode ear.

[0141] In possible implementations, such as Figure 2 and Figure 14 As shown, the negative electrode sheet 80 enters between the first negative electrode tab pressure roller 141 and the second negative electrode tab pressure roller 142 for tab cutting. After tab cutting, the negative electrode sheet 80 enters the negative electrode sheet 80 cutting die roller group for further cutting. Figure 14 The waste material then enters the first waste chamber 143 of the negative electrode.

[0142] In some possible embodiments of the present invention, the negative electrode sheet 80 cutting die roller assembly includes: a first negative electrode cutting roller 151, a second negative electrode cutting roller 152, a negative electrode cutter 153, and a second negative electrode waste chamber 154; the first negative electrode cutting roller 151 and the second negative electrode cutting roller 152 roll in cooperation with each other and form a channel for the negative electrode sheet 80 to pass through; the negative electrode cutter 153 is spirally arranged on the surface of the first negative electrode cutting roller 151; the surface of the second negative electrode cutting roller 152 is provided with... A second receiving groove 155 corresponding to the negative electrode cutter 153 is provided, and the second receiving groove 155 is spirally arranged on the surface of the negative electrode second cutting roller 152; the negative electrode second waste chamber 154 is provided corresponding to the discharge end of the negative electrode first cutting roller 151 and the negative electrode second cutting roller 152 to collect the waste material after the negative electrode sheet 80 is cut; wherein, the axial direction of the negative electrode first cutting roller 151 and the negative electrode second cutting roller 152 forms an angle with the conveying direction of the negative electrode sheet 80.

[0143] Specifically, this embodiment provides an implementation method for a negative electrode sheet 80 cutting die roller group. By setting a spiral negative electrode cutter 153 and a second receiving groove 155 on the surface of the first negative electrode cutting roller 151 and the second negative electrode cutting roller 152, continuous electrode sheet cutting is achieved without the need for frequent start and stop of the winding mechanism, which greatly improves the stability of the equipment and the cutting efficiency.

[0144] In a possible implementation, the negative electrode sheet 80 cutting die roller assembly further includes a negative electrode elastic part, which is disposed at the axial position of the negative electrode first cutting roller 151 and is used to adjust the axial position of the negative electrode first cutting roller 151 during the cutting of the negative electrode sheet 80.

[0145] It should be noted that by axially setting the negative electrode elastic part on the negative electrode first cutting roller 151, continuous roller cutting can be achieved between the negative electrode first cutting roller 151 and the negative electrode second cutting roller 152, which solves the problem of frequent start and stop required by the existing cutting technology.

[0146] In a possible implementation, the negative electrode elastic part is an elastic element provided on the end side of the negative electrode first cutting roller 151, which can provide axial elastic force to the negative electrode first cutting roller 151.

[0147] In a possible implementation, the negative electrode elastic part is a spring disposed on the end side of the negative electrode first cutting roller 151.

[0148] In a possible implementation, the negative electrode cutter 153 includes a positive electrode blade, with two negative electrode blades 156 spaced apart circumferentially along the negative electrode first cutting roller 151.

[0149] In a possible implementation, the negative electrode cutter 153 includes a negative electrode gap adjustment part 157 and a negative electrode cutter holder 158, with a negative electrode blade 156 disposed on the negative electrode cutter holder 158, and the negative electrode gap adjustment part 157 disposed between the two negative electrode cutter holders 158 to adjust the distance between the two negative electrode blades 156.

[0150] In a possible implementation, the negative electrode gap adjustment part 157 is an isosceles trapezoid with its upper bottom facing the bottom surface of the mounting groove; the negative electrode knife holder 158 has a trapezoidal cross-sectional shape along the radial direction of the negative electrode first cutting roller 151; wherein, the trapezoidal hypotenuse of the negative electrode gap adjustment part 157 abuts against the trapezoidal hypotenuse of the negative electrode knife holder 158 to adjust the distance between the two negative electrode blades 156.

[0151] In some possible embodiments of the present invention, the positive electrode driving roller group 13 includes: a positive electrode first driving roller 131 and a positive electrode second driving roller 132; the negative electrode driving roller group 16 includes: a negative electrode first driving roller 161 and a negative electrode second driving roller 162; the positive electrode first driving roller 131 and the positive electrode second driving roller 132 are tangentially arranged to realize the input of driving the positive electrode sheet 70; the negative electrode first driving roller 161 and the negative electrode second driving roller 162 are tangentially arranged to realize the input of driving the negative electrode sheet 80; the positive electrode second driving roller 132 and the negative electrode second driving roller 162 are tangentially arranged to realize the input of driving the first diaphragm sheet 90.

[0152] Specifically, this embodiment provides an implementation of a positive electrode driving roller group 13. The arrangement of the positive electrode first driving roller 131 and the positive electrode second driving roller 132 ensures the supply of input power to the positive electrode sheet 70.

[0153] Furthermore, the arrangement of the first negative drive roller 161 and the second negative drive roller 162 ensures the supply of input power to the negative electrode sheet 80.

[0154] Furthermore, the positive electrode first drive roller 131 and the negative electrode first drive roller 161 are spaced apart, while the positive electrode second drive roller 132 and the negative electrode second drive roller 162 are tangent to provide power for the input of the first diaphragm 90.

[0155] In some possible embodiments of the present invention, the sheet-making assembly 10 further includes: a positive electrode dust removal section 17; the positive electrode dust removal section 17 is disposed at the input end of the positive electrode drive roller group 13 and on one side of the positive electrode first drive roller 131; wherein, the positive electrode second drive roller 132 is a negative pressure adsorption roller; the positive electrode dust removal section 17 and the positive electrode second drive roller 132 cooperate to achieve dust removal on both sides of the positive electrode sheet 70.

[0156] Specifically, this embodiment provides an implementation of a positive electrode dust removal section 17. The positive electrode dust removal section 17 is configured to remove dust from one side of the positive electrode sheet 70, while the positive electrode second drive roller 132 is configured as a negative pressure adsorption roller so that the other side of the positive electrode sheet 70 is also removed from dust.

[0157] In a possible implementation, the positive electrode dust removal unit 17 is a negative pressure adsorption device.

[0158] In a possible implementation, the positive electrode dust removal unit 17 is a negative pressure fan.

[0159] In some possible embodiments of the present invention, the sheet-making assembly 10 further includes: a negative electrode dust removal section 18; the negative electrode dust removal section 18 is disposed at the input end of the negative electrode drive roller group 16 and on one side of the negative electrode first drive roller 161; wherein, the negative electrode second drive roller 162 is a negative pressure adsorption roller; the negative electrode dust removal section 18 and the negative electrode second drive roller 162 cooperate to achieve dust removal on both sides of the negative electrode sheet 80.

[0160] Specifically, this embodiment provides an implementation of a negative electrode dust removal section 18. The negative electrode dust removal section 18 is configured to remove dust from one side of the negative electrode sheet 80, while the negative electrode second drive roller 162 is configured as a negative pressure adsorption roller so that the other side of the negative electrode sheet 80 is also removed from dust.

[0161] In a possible implementation, the negative electrode dust removal unit 18 is a negative pressure adsorption device.

[0162] In a possible implementation, the negative electrode dust removal unit 18 is a negative pressure fan.

[0163] In some possible embodiments of the present invention, the invention further includes: a first heating part 110 and a second heating part 1101; the first heating part 110 is disposed on the feed end side of the sheet forming assembly 10 relative to the first diaphragm unwinding assembly 40 to preheat the first diaphragm sheet 90; the second heating part 1101 is disposed on the discharge end side of the sheet forming assembly 10 to preheat the pre-formed composite electrode sheet.

[0164] Specifically, this embodiment provides an implementation of a first heating section 110 and a second heating section 1101. The first heating section 110 preheats the first diaphragm sheet 90. The preheated first diaphragm sheet 90 enters the sheet-making assembly 10 and is combined with the positive electrode sheet 70 and the negative electrode sheet 80 to form a pre-fabricated composite electrode sheet. The pre-fabricated composite electrode sheet is then heated in the second heating section 1101 and enters the composite assembly 60 to be combined with the second diaphragm sheet 100. Multiple preheating treatments ensure the composite effect under ultra-high-speed sheet-making efficiency.

[0165] In some possible embodiments of the present invention, the composite assembly 60 includes: an electrode composite roller group 61 and an electrode cutting roller group 62; a sheet forming assembly 10 feeds a pre-formed composite electrode sheet to the electrode composite roller group 61; a second diaphragm unwinding assembly 50 feeds a second diaphragm sheet 100 to the electrode composite roller group 61; wherein the electrode composite roller group 61 combines the pre-formed composite electrode sheet and the second diaphragm sheet 100 to form a target composite electrode sheet; and the electrode cutting roller group 62 cuts the target composite electrode sheet to form a composite electrode sheet unit.

[0166] Specifically, this embodiment provides an implementation of a composite component 60, wherein the electrode composite roller group 61 enables the pre-made composite electrode to be composited with the second diaphragm sheet 100. Under the action of the electrode composite roller group 61, the second diaphragm sheet 100 is composited on one side of the positive electrode 70 or the negative electrode 80 to form the target composite electrode.

[0167] Furthermore, the electrode cutting roller group 62 cuts the target composite electrode into composite electrode units.

[0168] In a possible implementation, the electrode composite roller assembly 61 includes a composite pressure roller that enables the composite of the pre-formed composite electrode with the second diaphragm sheet 100.

[0169] In some possible embodiments of the present invention, the invention further includes: a third heating part 1102 and a fourth heating part 1103; the third heating part 1102 is disposed at the feed end of the electrode composite roller group 61 to preheat the second diaphragm sheet 100; the fourth heating part 1103 is disposed between the electrode composite roller group 61 and the electrode cutting roller group 62 to preheat the target composite electrode sheet.

[0170] Specifically, this embodiment provides an implementation of a third heating section 1102 and a fourth heating section 1103. The third heating section 1102 is used to preheat the second diaphragm sheet 100. The preheated second diaphragm sheet 100 enters the electrode composite roller group 61 and is composited with the pre-made composite electrode sheet to form a composite electrode sheet. The composite electrode sheet is then heated in the fourth heating section 1103 and then enters the electrode cutting roller group 62 for cutting. Multiple preheating treatments are used to ensure the composite effect under ultra-high speed sheet making efficiency.

[0171] In some possible embodiments of the present invention, it further includes: a stacking box 120 and a conveying section 130; the stacking box 120 and the electrode cutting roller group 62 are connected through the conveying section 130 to realize the storage of the cut composite electrode units.

[0172] Specifically, this embodiment provides an implementation of a stacking box 120 and a conveying unit 130. By setting the conveying unit 130, the cut composite electrode units are conveyed to the stacking box 120, and the stacking box 120 realizes the storage of the composite electrode units and achieves closed-loop control.

[0173] In some possible embodiments of the present invention, the invention further includes: a quality inspection unit 140 and a waste bin 150; the quality inspection unit 140 is disposed between the electrode cutting roller group 62 and the stacking box 120 to perform quality inspection on the cut composite electrode units; the waste bin 150 is disposed between the quality inspection unit 140 and the stacking box 120 to collect the scrapped composite electrode units.

[0174] Specifically, this embodiment provides an implementation of a quality inspection unit 140 and a waste bin 150. The quality inspection unit 140 performs quality inspection on the composite electrode unit, thereby realizing the identification of waste composite electrode units.

[0175] Furthermore, the waste bin 150 enables the collection of waste composite electrode units, achieving closed-loop control of the cutting quality of composite electrode units.

[0176] In a possible implementation, the quality inspection unit 140 includes a CCD detection unit.

[0177] In a possible implementation, the quality control unit 140 includes a short-circuit detection unit.

[0178] In some possible embodiments of the present invention, the conveying unit 130 includes: a first negative pressure conveying unit 1301, a second negative pressure conveying unit 1302, and a third negative pressure conveying unit 1303; the first negative pressure conveying unit 1301, the second negative pressure conveying unit 1302, and the third negative pressure conveying unit 1303 are connected to each other to form a mechanism for conveying composite electrode units; wherein, the quality inspection unit 140 is provided corresponding to the first negative pressure conveying unit 1301; the waste bin 150 is provided corresponding to the second negative pressure conveying unit 1302, and the conveying surface of the second negative pressure conveying unit 1302 faces the waste bin 150.

[0179] Specifically, this embodiment provides an implementation of a conveying unit 130, wherein the first negative pressure conveying unit 1301, the second negative pressure conveying unit 1302, and the third negative pressure conveying unit 1303 have corresponding negative pressure mechanisms, so that when the composite electrode unit is conveyed on the conveying unit 130, it can be adsorbed onto the surfaces of the first negative pressure conveying unit 1301, the second negative pressure conveying unit 1302, and the third negative pressure conveying unit 1303 through the negative pressure action.

[0180] Furthermore, the conveying surface of the second negative pressure conveying unit 1302 faces the waste bin 150. This arrangement allows the composite electrode unit to be collected into the waste bin 150 when it is waste by adjusting the adsorption force of the second negative pressure conveying unit 1302.

[0181] In a possible implementation, the first negative pressure conveying unit 1301, the second negative pressure conveying unit 1302, and the third negative pressure conveying unit 1303 are negative pressure conveyor belts.

[0182] In a possible implementation, a transmission path for the composite electrode unit is formed between the first negative pressure conveying unit 1301, the second negative pressure conveying unit 1302, and the third negative pressure conveying unit 1303. When the composite electrode unit is transferred from the first negative pressure conveying unit 1301, the quality inspection unit 140 performs quality inspection, marks the unqualified composite electrode unit, and issues an action command. After the composite electrode unit is transferred from the first negative pressure conveying unit 1301 to the second negative pressure conveying unit 1302, the second negative pressure conveying unit 1302 removes the unqualified waste composite electrode unit according to the action command and transfers the qualified composite electrode unit to the third negative pressure conveying unit 1303. Finally, the qualified composite electrode unit falls into the stacking box 120.

[0183] In a possible implementation, the quality inspection unit 140 is electrically connected to the second negative pressure conveying unit 1302. When the quality inspection unit 140 detects a waste composite electrode unit, it issues a corresponding action command. The second negative pressure conveying unit 1302 opens and closes according to the action command. The waste composite electrode unit is removed from the second negative pressure conveying unit 1302 when passing through the waste bin and finally falls into the waste bin for collection.

[0184] In some specific embodiments of the present invention, this solution provides a production line having the above-described composite lamination device.

[0185] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention according to the specific circumstances.

[0186] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "method," "specific method," or "some methods," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or method is included in at least one embodiment or method of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or method. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or methods. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or methods described in this specification, as well as the features of different embodiments or methods.

[0187] Finally, it should be noted that the above embodiments are only for illustrating the present invention and not for limiting the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications, or equivalent substitutions of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention and should be covered within the scope of the claims of the present invention.

Claims

1. A composite lamination device, characterized in that, include: The assembly includes a sheet-making unit (10), a positive electrode unwinding unit (20), a negative electrode unwinding unit (30), a first diaphragm unwinding unit (40), a second diaphragm unwinding unit (50), a composite unit (60), a third heating unit (1102), and a fourth heating unit (1103). The positive electrode unwinding assembly (20) feeds a positive electrode sheet (70) to the sheet-making assembly (10); the negative electrode unwinding assembly (30) feeds a negative electrode sheet (80) to the sheet-making assembly (10); the first diaphragm unwinding assembly (40) feeds a first diaphragm sheet (90) to the sheet-making assembly (10); the sheet-making assembly (10) composites the positive electrode sheet (70) and the negative electrode sheet (80) onto two opposite sides of the first diaphragm sheet (90) to form a pre-fabricated composite electrode sheet, and feeds it to the composite assembly (60); the second diaphragm unwinding assembly (50) feeds a second diaphragm sheet (100) to the composite assembly (60); the composite assembly (60) combines the pre-fabricated composite electrode sheet with the second diaphragm sheet (100) to form a composite electrode sheet; The composite assembly (60) includes: an electrode composite roller group (61) and an electrode cutting roller group (62); the sheet forming assembly (10) feeds the pre-made composite electrode to the electrode composite roller group (61); the second diaphragm unwinding assembly (50) feeds the second diaphragm sheet (100) to the electrode composite roller group (61); wherein, the electrode composite roller group (61) combines the pre-made composite electrode and the second diaphragm sheet (100) to form a target composite electrode; the electrode cutting roller group (62) cuts the target composite electrode to form a composite electrode unit; The third heating section (1102) is disposed at the feed end of the electrode composite roller group (61) to preheat the second diaphragm sheet (100); The fourth heating section (1103) is disposed between the electrode composite roller group (61) and the electrode cutting roller group (62) to preheat the target composite electrode.

2. The composite stacking device according to claim 1, characterized in that, The sheet-making assembly (10) includes: a positive electrode ear mold roller group (11), a positive electrode cutting mold roller group (12), a positive electrode driving pressure roller group (13), a negative electrode ear mold roller group (14), a negative electrode cutting mold roller group (15), and a negative electrode driving pressure roller group (16). The positive electrode sheet (70) sequentially enters the positive electrode ear mold roller group (11), the positive electrode cutting mold roller group (12) and the positive electrode drive pressure roller group (13). The negative electrode sheet (80) sequentially enters the negative electrode ear mold roller group (14), the negative electrode cutting mold roller group (15) and the negative electrode drive pressure roller group (16). The first diaphragm (90) enters the positive electrode drive roller group (13) and the negative electrode drive roller group (16) to achieve composite with the positive electrode sheet (70) and the negative electrode sheet (80) respectively; The positive electrode ear mold roller group (11) and the negative electrode ear mold roller group (14) are used to cut electrode ears on the positive electrode sheet (70) and the negative electrode sheet (80), respectively. The positive electrode cutting die roller group (12) and the negative electrode cutting die roller group (15) are used for cutting the positive electrode sheet (70) and the negative electrode sheet (80), respectively; The positive drive roller group (13) and the negative drive roller group (16) are used to provide power for the input and compounding of the positive electrode sheet (70), the negative electrode sheet (80) and the first diaphragm sheet (90).

3. The composite stacking device according to claim 2, characterized in that, The positive electrode ear mold roller group (11) includes: a first positive electrode ear pressure roller (111), a second positive electrode ear pressure roller (112), and a first positive electrode waste chamber (113). The first pressure roller (111) and the second pressure roller (112) of the positive electrode tab are tangentially arranged to cut the tab on the positive electrode sheet (70); The first waste chamber (113) of the positive electrode is set at the discharge end of the first pressure roller (111) of the positive electrode tab and the second pressure roller (112) of the positive electrode tab, so as to collect the waste material after the positive electrode sheet (70) is cut into tabs.

4. The composite stacking device according to claim 2, characterized in that, The positive electrode cutting die roller group (12) includes: a first positive electrode cutting roller (121), a second positive electrode cutting roller (122), a positive electrode cutter (123), and a second positive electrode waste chamber (124). The first cutting roller (121) and the second cutting roller (122) of the positive electrode roll each other in a rolling engagement, and form a channel for the positive electrode sheet (70) to pass through; The positive electrode cutter (123) is spirally arranged on the surface of the first positive electrode cutting roller (121); The surface of the second cutting roller (122) of the positive electrode is provided with a first receiving groove (125) corresponding to the positive electrode cutter (123), and the first receiving groove (125) is spirally arranged on the surface of the second cutting roller (122); The second waste chamber (124) of the positive electrode is set at the discharge end of the first cutting roller (121) and the second cutting roller (122) of the positive electrode to collect the waste material after the positive electrode sheet (70) is cut; The axial directions of the first cutting roller (121) and the second cutting roller (122) of the positive electrode form an angle with the conveying direction of the positive electrode sheet (70).

5. The composite stacking device according to claim 2, characterized in that, The negative electrode ear mold roller group (14) consists of a negative electrode ear first pressure roller (141), a negative electrode ear second pressure roller (142), and a negative electrode first waste chamber (143). The first pressure roller (141) and the second pressure roller (142) of the negative electrode tab are tangentially arranged to cut the tab on the negative electrode sheet (80); The first waste chamber (143) of the negative electrode is set at the discharge end of the first pressure roller (141) of the negative electrode tab and the second pressure roller (142) of the negative electrode tab, so as to collect the waste material after the negative electrode sheet (80) is cut into tabs.

6. The composite stacking device according to claim 2, characterized in that, The negative electrode cutting die roller group (15) includes: a negative electrode first cutting roller (151), a negative electrode second cutting roller (152), a negative electrode cutter (153), and a negative electrode second waste chamber (154). The first cutting roller (151) and the second cutting roller (152) of the negative electrode roll each other in a rolling engagement, and form a channel for the negative electrode sheet (80) to pass through. The negative electrode cutter (153) is spirally arranged on the surface of the negative electrode first cutting roller (151); The surface of the negative electrode second cutting roller (152) is provided with a second receiving groove (155) corresponding to the negative electrode cutter (153), and the second receiving groove (155) is spirally arranged on the surface of the negative electrode second cutting roller (152); The negative electrode second waste chamber (154) is set at the discharge end of the negative electrode first cutting roller (151) and the negative electrode second cutting roller (152) to collect the waste material after the negative electrode sheet (80) is cut; The axial directions of the first cutting roller (151) and the second cutting roller (152) of the negative electrode form an angle with the conveying direction of the negative electrode sheet (80).

7. The composite stacking device according to any one of claims 2 to 6, characterized in that, The positive electrode drive roller group (13) includes: a positive electrode first drive roller (131) and a positive electrode second drive roller (132). The negative electrode drive roller group (16) includes: a negative electrode first drive roller (161) and a negative electrode second drive roller (162). The first positive electrode drive roller (131) and the second positive electrode drive roller (132) are tangentially arranged to realize the input for driving the positive electrode sheet (70); The negative electrode first drive roller (161) and the negative electrode second drive roller (162) are tangentially arranged to realize the input for driving the negative electrode sheet (80); The positive electrode second drive roller (132) and the negative electrode second drive roller (162) are tangentially arranged to realize the input for driving the first diaphragm (90).

8. The composite stacking device according to claim 7, characterized in that, The film-making assembly (10) further includes: a positive electrode dust removal section (17); The positive electrode dust removal section (17) is located at the input end of the positive electrode drive roller group (13) and is located on one side of the positive electrode first drive roller (131); The positive electrode second drive roller (132) is a negative pressure adsorption roller; The positive electrode dust removal section (17) and the positive electrode second drive roller (132) cooperate to achieve dust removal on both sides of the positive electrode sheet (70).

9. The composite stacking device according to claim 7, characterized in that, The film-making assembly (10) further includes: a negative electrode dust removal unit (18); The negative electrode dust removal section (18) is located at the input end of the negative electrode drive roller group (16) and is located on one side of the negative electrode first drive roller (161); Wherein, the negative electrode second drive roller (162) is a negative pressure adsorption roller; The negative electrode dust removal section (18) and the negative electrode second drive roller (162) cooperate to achieve dust removal on both sides of the negative electrode sheet (80).

10. The composite stacking device according to any one of claims 2 to 6, characterized in that, Also includes: First heating section (110) and second heating section (1101); The first heating part (110) is disposed on the feed end side of the sheet-making assembly (10) relative to the first diaphragm unwinding assembly (40) to preheat the first diaphragm sheet (90); The second heating part (1101) is disposed on the discharge end side of the sheet-making assembly (10) to preheat the pre-made composite electrode sheet.

11. The composite stacking device according to claim 1, characterized in that, Also includes: Stacking box (120) and conveying unit (130); The stacking box (120) and the electrode cutting roller group (62) are connected by the conveying part (130) to realize the storage of the cut composite electrode unit.

12. The composite stacking device according to claim 11, characterized in that, Also includes: Quality control department (140) and waste bin (150); The quality inspection unit (140) is located between the electrode cutting roller group (62) and the stacking box (120) to perform quality inspection on the cut composite electrode unit; The waste bin (150) is located between the quality inspection department (140) and the stacking bin (120) to collect the scrapped composite electrode units.

13. The composite stacking device according to claim 12, characterized in that, The conveying unit (130) includes: a first negative pressure conveying unit (1301), a second negative pressure conveying unit (1302) and a third negative pressure conveying unit (1303). The first negative pressure conveying unit (1301), the second negative pressure conveying unit (1302) and the third negative pressure conveying unit (1303) are connected to each other to form a mechanism for conveying the composite electrode unit; The quality inspection department (140) is provided in relation to the first negative pressure conveying unit (1301); The waste bin (150) is provided corresponding to the second negative pressure conveying unit (1302), and the conveying surface of the second negative pressure conveying unit (1302) faces the waste bin (150).

14. A production line, characterized in that, The composite stacking device according to any one of claims 1 to 13.

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