Dry film forming equipment and battery production system
By setting up clearance adjustment components and auxiliary adjustment components in the dry film forming equipment, the problem of unstable roller gap caused by uneven force on the pressure roller was solved, thereby improving the quality of the electrode sheet and production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CONTEMPORARY AMPEREX TECHNOLOGY CO LTD
- Filing Date
- 2026-01-27
- Publication Date
- 2026-04-10
AI Technical Summary
In existing dry film forming equipment, the pressure rollers are prone to shifting due to uneven force, resulting in unstable roller gaps and affecting electrode quality and production efficiency.
In dry film forming equipment, the bearing components are provided with clearance adjustment components on opposite sides along the arrangement direction of the pressure rollers. By applying pressure in both directions, radial clearance is eliminated, ensuring that the pressure rollers are subjected to balanced force. The auxiliary adjustment components suppress the movement of the pressure rollers and maintain the stability of the roller gap.
This improved the quality and areal density consistency of the electrode sheets produced by roll forming, reduced the probability of roll gap instability, and increased production efficiency.
Smart Images
Figure CN224103602U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of batteries, in particular to a dry film forming device and a battery production system. BACKGROUND
[0002] With the popularization and promotion of new energy vehicles, the charging and discharging performance, endurance and other performances of new energy vehicles are increasingly attracting people's attention and attention. Batteries, as the power source of new energy vehicles, are widely used.
[0003] In the existing dry coating production process of the pole piece, the dry film forming device with multiple compression rollers is used to calender the powder into a self-supporting electrode film. The electrode film is then compounded with the current collector to obtain a dry pole piece. The existing dry film forming device is prone to deviation due to uneven stress, thereby affecting the stability of the roll gap between the rollers, and there is a problem of large roll gap fluctuation. The roll gap consistency is difficult to guarantee, which affects the quality and production efficiency of the dry pole piece. CONTENT OF THE UTILITY MODEL
[0004] Therefore, it is necessary to provide a dry film forming device and a battery production system to solve the problem of poor roll gap consistency of the existing dry film forming device.
[0005] A dry film forming device includes a rack, a roller pressing assembly, and a backlash adjusting assembly. The roller pressing assembly is arranged at both ends of the rack along the axial direction. The roller pressing assembly includes at least two rollers, a bearing, and a seat. All rollers are arranged side by side along the first direction and form a roller pressing channel. Each roller is provided with a bearing at both ends along the axial direction. The bearing is arranged in the seat, and the backlash adjusting assembly is arranged outside the bearing. At least one backlash adjusting assembly is arranged on the opposite sides of the bearing along the first direction. Each backlash adjusting assembly is configured to press the opposite sides of the bearing along the first direction. The dry film forming device described above is provided with at least one backlash adjusting assembly on the opposite sides of the bearing along the arrangement direction of the rollers, so that each backlash adjusting assembly can press the opposite sides of the bearing along the arrangement direction of the rollers. The radial backlash between the bearing and the roller can be eliminated in both directions. The stress on the opposite sides of each roller along the arrangement direction is balanced, the probability of unstable roll gap between the rollers caused by uneven stress is reduced, the stability of the roll gap between the rollers is maintained, and the quality and surface density consistency of the pole piece formed by roller pressing and compounding are improved.
[0006] In some embodiments, the bearing has a first central axis perpendicular to the first direction, and all backlash adjusting assemblies are symmetrically distributed on both sides of the first central axis. In this way, the stress on the left and right sides of the roller is balanced, and the probability of unstable roll gap between the rollers caused by uneven stress is further reduced.
[0007] In some embodiments, each of the gap adjustment assemblies comprises at least two gap adjusting members, and all the gap adjusting members are arranged outside the bearing member. In this way, each of the gap adjustment assemblies comprises at least two gap adjusting members, and each of the gap adjusting members can simultaneously press the bearing member, so as to keep the pressure of the compression roller balanced in each direction and keep the stability of the nip between the compression rollers.
[0008] In some embodiments, the bearing member has a second central axis parallel to the first direction, and all the gap adjusting members of the same gap adjustment assembly are symmetrically arranged on both sides of the second central axis. In this way, all the gap adjusting members of the same gap adjustment assembly can press the bearing member from the upper side and the lower side, respectively, so as to keep the pressure of the compression roller balanced on the upper side and the lower side and keep the stability of the position of the compression roller.
[0009] In some embodiments, the gap adjusting member comprises a contact portion and a pressing portion. The contact portion is arranged in the seat body and can contact the bearing member. The pressing portion is arranged in the seat body and is used to press the contact portion, so that the contact portion abuts against the bearing member. In this way, by adjusting the pressing portion, the pressure applied by the contact portion to the bearing member can be adjusted, so that the bearing member is tightly pressed against the compression roller, thereby eliminating the radial gap between the bearing member and the compression roller. The structure is compact and reasonable and is convenient to disassemble and assemble.
[0010] In some embodiments, the contact portion is configured in a block structure capable of elastic deformation. In this way, when the pressure applied by the pressing portion to the contact portion is adjusted, the contact portion can be elastically deformed without being easily damaged, and the adjustment requirement of the pressure applied by the contact portion to the bearing member can be met.
[0011] In some embodiments, the seat body is provided with a receiving groove for accommodating the contact portion. The side of the receiving groove facing the bearing member has an opening. The side of the receiving groove away from the opening is provided with an adjusting hole, and the pressing portion is arranged in the adjusting hole. In this way, the corresponding space can be arranged in the seat body to accommodate the contact portion and the pressing portion, and the pressure matching between the contact portion, the pressing portion and the bearing member is not affected. The structure is compact, and the space utilization of the seat body is improved.
[0012] In some embodiments, the adjusting hole comprises a first hole section and a second hole section which are sequentially connected. The inner diameter of the second hole section is smaller than that of the first hole section, and the second hole section is located between the receiving groove and the first hole section. The pressing portion comprises a cap and a rod body connected with the cap. The rod body extends into the second hole section after passing through the first hole section, and the rod body is threadedly connected with the second hole section. The cap is limited outside the first hole section. In this way, by rotating the pressing portion, the extension length of the rod body in the second hole section can be adjusted, and the pressure applied by the contact portion to the bearing member can be adjusted, thereby eliminating the radial gap between the bearing member and the compression roller.
[0013] In some embodiments, the gap adjusting member further comprises an elastic part, which is sleeved on the rod body and limited outside the first hole section. In this way, the elastic part can enable the pressing part to maintain the pressing force on the abutting part, reducing the probability that the pressing part cannot press the abutting part due to temperature influence.
[0014] In some embodiments, the elastic part is configured as an axially elastic energy storage closed ring structure. In this way, the elastic part in the closed ring structure can better enable the pressing part to maintain the pressing force on the abutting part, meeting the pressing demand of the abutting part on the bearing member.
[0015] In some embodiments, the dry film forming device further comprises an auxiliary adjusting assembly connected with the seat body and the rack and used for inhibiting the movement of the compression roller in the first direction. In this way, the auxiliary adjusting assembly can inhibit the movement of the compression roller in the first direction, so that the roll gap between the compression rollers remains stable, improving the quality and surface density consistency of the pole piece formed by roll pressing.
[0016] In some embodiments, the auxiliary adjusting assembly comprises a first adjusting member, a second adjusting member, a limiting member and a mounting seat, the mounting seat is provided on the rack and has a limiting groove, the limiting member is fixedly connected to the seat body and at least partially extends into the limiting groove, the first adjusting member and the second adjusting member are movably arranged on the opposite sides of the limiting groove along the first direction, and the first adjusting member and the second adjusting member are used for pressing the part of the limiting member extending into the limiting groove, so as to inhibit the movement of the compression roller in the first direction. In this way, by adjusting the first adjusting member and the second adjusting member, the pressing force on the part of the limiting member extending into the limiting groove is adjusted, the movement of the compression roller in the first direction is inhibited, and the roll gap between the compression rollers remains stable, further improving the quality and surface density consistency of the pole piece formed by roll pressing.
[0017] In some embodiments, the auxiliary adjusting assembly further comprises an elastic adjusting member arranged between the first adjusting member and the limiting member. In this way, the elastic adjusting member can adjust the thrust on the limiting member, providing the limiting member with stable and adjustable thrust, thereby stably inhibiting the movement of the compression roller in the first direction.
[0018] In some embodiments, the elastic adjusting member is configured as a gas spring structure. In this way, the limiting member can be provided with stable and adjustable thrust, and the movement of the compression roller in the first direction can be better inhibited.
[0019] In some embodiments, the roll pressing assembly further comprises a sliding member, the seat body and the rack are provided with a mounting gap in a second direction intersecting the first direction, and the sliding member is slidably arranged in the mounting gap and connected with the limiting member. In this way, the sliding member is slidably arranged in the mounting gap, facilitating the quick disassembly and assembly of the compression roller and improving the disassembly and assembly efficiency.
[0020] In some embodiments, the sliding member is configured as a plate-like structure with smooth surface. In this way, the sliding member is a plate-like structure with smooth surface, facilitating smooth sliding of the sliding member in and out of the installation gap, convenient operation and reasonable structural design.
[0021] A battery production system comprising the dry film forming device described above. The battery production system described above, at least one gap adjustment assembly is arranged on the opposite sides of the bearing along the arrangement direction of the compression rollers, so that each gap adjustment assembly can press on the opposite sides of the bearing along the arrangement direction of the compression rollers, and the radial gap between the bearing and the compression rollers can be eliminated in both directions. The force on the opposite sides of the compression rollers along the arrangement direction is balanced, reducing the probability of unstable roll gap between the compression rollers caused by unbalanced force, which helps to maintain the stability of the roll gap between the compression rollers, thereby improving the quality and surface density consistency of the roll-pressed composite sheet. BRIEF DESCRIPTION OF DRAWINGS
[0022] Figure 1 It is a schematic diagram of the dry film forming device in some embodiments of the present application.
[0023] Figure 2 It is a schematic diagram of the dry film forming device in some embodiments of the present application. Figure 1 It is a left view of the dry film forming device shown.
[0024] Figure 3 It is a schematic diagram of the dry film forming device in some embodiments of the present application. Figure 1 It is an axonometric view of the roll-pressing assembly and the gap adjustment assembly in the dry film forming device shown.
[0025] Figure 4 It is a schematic diagram of the dry film forming device in some embodiments of the present application. Figure 3 It is a first cross-sectional view of the roll-pressing assembly and the gap adjustment assembly in the dry film forming device shown.
[0026] Figure 5 It is a schematic diagram of the dry film forming device in some embodiments of the present application. Figure 3 It is a front view of the roll-pressing assembly and the gap adjustment assembly in the dry film forming device shown.
[0027] Figure 6 It is a schematic diagram of the dry film forming device in some embodiments of the present application. Figure 5 It is a second cross-sectional view of the roll-pressing assembly and the gap adjustment assembly in the dry film forming device shown.
[0028] REFERENCE SIGNS:
[0029] 100, roll-pressing assembly; 101, roll-pressing channel; 110, compression roller; 120, bearing; 130, seat body; 131, accommodating groove; 132, adjusting hole; 132a, first hole segment; 132b, second hole segment; 140, sliding member;
[0030] 200, gap adjustment assembly; 210, gap adjustment member; 211, abutting portion; 212, pressing portion; 212a, cap; 212b, rod body; 213, elastic portion;
[0031] 300, auxiliary adjusting assembly; 310, first adjusting member; 320, second adjusting member; 330, limiting member; 340, mounting seat; 350, elastic adjusting member;
[0032] 400, rack. DETAILED DESCRIPTION
[0033] The embodiments of the technical solutions of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.
[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion.
[0035] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise explicitly and specifically limited.
[0036] In this paper, the reference to "embodiments" means that the specific features, structures or properties described in conjunction with the embodiments can be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily mean the same embodiment, nor is it an independent or alternative embodiment to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0037] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship between the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents a "or" relationship between the front and rear associated objects.
[0038] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two), and similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).
[0039] In the description of the embodiments of the present application, the orientations or positional relationships indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application.
[0040] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.
[0041] With the popularization and promotion of new energy vehicles, the charging and discharging performance, endurance capability and the like of new energy vehicles are increasingly attracting people's attention and attention. Batteries, as the power energy of new energy vehicles, are widely used.
[0042] In the existing dry coating production process of the pole piece, the powder is calendered into a self-supporting electrode film by a dry film forming device with multiple pressure rollers, and the electrode film is then compounded with a current collector to obtain a dry pole piece. The existing dry film forming device is prone to deviation due to uneven stress, thereby affecting the stability of the roll gap between the rollers, and there is a problem of large roll gap fluctuation, and the roll gap consistency is difficult to guarantee, which affects the quality and production efficiency of the dry pole piece.
[0043] Based on the above considerations, after in-depth research, the present application designs a dry film forming device and a battery production system. In the dry film forming device, at least one gap adjustment assembly is arranged on the opposite sides of the bearing along the arrangement direction of the rollers, so that the gap adjustment assemblies press on the opposite sides of the bearing along the arrangement direction of the rollers, and the radial gap between the bearing and the rollers can be eliminated in both directions. The stress on the opposite sides of each roller along its arrangement direction is kept balanced, the probability of instability of the roll gap between the rollers caused by uneven stress is reduced, the stability of the roll gap between the rollers is facilitated to be maintained, and the quality and surface density consistency of the pole piece formed by roll pressing and compounding are improved.
[0044] Please refer to Figures 1 to 4The dry film forming device in an embodiment includes a rack 400, a roller pressing assembly 100 and a gap adjusting assembly 200. The roller pressing assembly 100 is arranged at both ends of the rack 400 along the axial direction of the roller pressing assembly 100. The roller pressing assembly 100 includes at least two pressing rollers 110, a bearing 120 and a seat body 130. The pressing rollers 110 are arranged side by side along a first direction and form a roller pressing channel 101 between each other. The bearing 120 is arranged at both ends of the pressing roller 110 along the axial direction of the pressing roller 110. The bearing 120 is arranged in the seat body 130, and the gap adjusting assembly 200 is arranged outside the bearing 120. The bearing 120 is arranged at both sides along the first direction, and the gap adjusting assembly 200 is arranged at both sides of the bearing 120 along the first direction.
[0045] It should be noted that the first direction is the X direction shown in the figure, that is, the arrangement direction of the pressing rollers 110, that is, the horizontal direction. The pressing rollers 110 are arranged side by side along the horizontal direction and form a roller pressing channel 101 (that is, a roller gap) between each other. The electrode film and the current collector are transported through the roller pressing channel 101 and are roll pressed and combined in the roller pressing channel 101 to form an electrode piece. Figures 1 to 4
[0046] In an embodiment of the present application, the roller pressing assembly 100 is a component for forming an electrode film and roll pressing and combining the electrode film and the current collector into an electrode piece. The roller pressing assembly 100 can adopt various structural forms. The roller pressing assembly 100 includes at least two pressing rollers 110. The specific number of the pressing rollers 110 can be adjusted according to actual needs to meet the roll pressing requirements of electrode pieces of different sizes or types. For example, the roller pressing assembly 100 includes six pressing rollers 110. The position of the second pressing roller 110 is fixed, and the remaining five pressing rollers 110 can move towards or away from the second pressing roller 110, that is, the size of each roller pressing channel 101 can be adjusted to meet the roll pressing requirements.
[0047] In an embodiment of the present application, the bearing 120 is a component arranged at the axial end of the pressing roller 110. The two ends of the pressing roller 110 are fixed to the seat body 130 through the bearing 120, so that the pressing roller 110 can rotate relative to the seat body 130. The bearing 120 generally includes an inner ring, an outer ring and a plurality of balls. The outer ring is arranged on the outer periphery of the inner ring, and the plurality of balls are arranged between the outer ring and the inner ring. The inner ring is arranged on the roller shaft of the pressing roller 110, and the outer ring is fixed in the seat body 130, so that the roller shaft of the pressing roller 110 can rotate relative to the seat body 130. The number of bearings 120 arranged at the end of the pressing roller 110 is not limited to one. When at least two bearings 120 are arranged at the end of the pressing roller 110, the bearings 120 arranged at the same end can be arranged side by side.
[0048] In the embodiments of the present application, the seat body 130 is a component sleeved outside the bearing member 120, the seat body 130 is fixedly connected with the outer ring of the bearing member 120, and is used for providing a mounting space for the outer ring of the bearing member 120. The seat body 130 can adopt various structural forms. For example, the seat body 130 is an integral structure, and the seat body 130 has a cuboid structure.
[0049] In the embodiments of the present application, the gap adjustment assembly 200 is a component for eliminating the radial gap between the bearing member 120 and the compression roller 110, the gap adjustment assembly 200 is arranged outside the bearing member 120 and is used for pressing the bearing member 120, so that the bearing member 120 abuts against the compression roller 110, thereby eliminating the radial gap between the bearing member 120 and the compression roller 110. The gap adjustment assembly 200 can adopt various structural forms, which are not limited herein.
[0050] In the embodiments of the present application, the rack 400 is a component for providing a mounting space for the roll pressing assembly 100 or other components, and the rack 400 can adopt various structural forms. For example, the rack 400 can be an integral structure; for another example, the rack 400 can be a split structure, and the rack 400 includes a plurality of plate structures which are spliced and combined together.
[0051] The dry film forming equipment described above, the bearing member 120 is arranged along the opposite sides of each compression roller 110, and at least one gap adjustment assembly 200 is arranged on each side, so that each gap adjustment assembly 200 presses on the opposite sides of the bearing member 120 along the arrangement direction of each compression roller 110, thereby eliminating the radial gap between the bearing member 120 and the compression roller 110 in two directions, keeping the stress of each compression roller 110 balanced on the opposite sides along the arrangement direction, reducing the probability of instability of the roll gap between each compression roller 110 caused by unbalanced stress, and facilitating the stability of the roll gap between each compression roller 110, thereby improving the quality and surface density consistency of the pole piece formed by roll pressing.
[0052] According to some embodiments of the present application, referring to Figure 4 , the bearing member 120 has a first central axis perpendicular to the first direction, and all the gap adjustment assemblies 200 are symmetrically distributed on the two sides of the first central axis.
[0053] It should be noted that the bearing member 120 has a first central axis perpendicular to the first direction, that is, the first central axis extends along the Y direction shown in Figure 4 , that is, the vertical central axis Z1 of the bearing member 120.
[0054] In the embodiments of the present application, all the gap adjustment assemblies 200 are symmetrically distributed on the two sides of the first central axis, that is, all the gap adjustment assemblies 200 are symmetrically distributed on the left and right sides of the bearing member 120, and the structures and types of all the gap adjustment assemblies 200 can be the same or different.
[0055] Through the above arrangement, the left and right sides of the compression roller 110 are balanced in force, and the probability of instability of the roll gap between the compression rollers 110 caused by unbalanced force is further reduced.
[0056] According to some embodiments of the present application, referring to Figure 4 Each of the gap adjustment assemblies 200 includes at least two gap adjusting members 210, and all of the gap adjusting members 210 are arranged outside the bearing member 120.
[0057] In the embodiments of the present application, all of the gap adjusting members 210 are arranged outside the bearing member 120, and all of the gap adjusting members 210 can be arranged uniformly or in other ways. The structures and types of all of the gap adjusting members 210 can be the same or different.
[0058] Through the above arrangement, each of the gap adjustment assemblies 200 includes at least two gap adjusting members 210, and each of the gap adjusting members 210 can simultaneously press the bearing member 120, so that the compression roller 110 is balanced in force in each direction, and the stability of the roll gap between the compression rollers 110 can be maintained.
[0059] According to some embodiments of the present application, referring to Figure 4 The bearing member 120 has a second central axis parallel to the first direction, and all of the gap adjusting members 210 of the same gap adjustment assembly 200 are symmetrically distributed on both sides of the second central axis.
[0060] It should be noted that the bearing member 120 has a second central axis parallel to the first direction, that is, the second central axis extends along the X direction shown in Figure 4 , that is, the horizontal central axis Z2 of the bearing member 120.
[0061] In the embodiments of the present application, all of the gap adjusting members 210 of the same gap adjustment assembly 200 are symmetrically distributed on both sides of the second central axis, that is, all of the gap adjusting members 210 of the same gap adjustment assembly 200 are symmetrically distributed on the upper and lower sides of the bearing member 120, and the structures and types of all of the gap adjusting members 210 can be the same or different.
[0062] Through the above arrangement, all of the gap adjusting members 210 of the same gap adjustment assembly 200 can press the upper and lower sides of the bearing member 120 respectively, so that the upper and lower sides of the compression roller 110 are balanced in force, and the position stability of the compression roller 110 can be maintained.
[0063] According to some embodiments of the present application, referring to Figure 4The play adjusting member 210 comprises a bearing portion 211 and a pressing portion 212. The bearing portion 211 is arranged in the seat body 130 and can contact the bearing member 120. The pressing portion 212 is arranged in the seat body 130 and is used to press the bearing portion 211, so that the bearing portion 211 abuts against the bearing member 120.
[0064] It should be noted that by adjusting the pressing portion 212, the pressure applied by the pressing portion 212 to the bearing portion 211 can be adjusted, so that the pressure applied by the bearing portion 211 to the bearing member 120 can be adjusted, so that the bearing member 120 abuts against the compression roller 110, thereby eliminating the radial play between the bearing member 120 and the compression roller 110.
[0065] In the embodiments of the present application, the bearing portion 211 is a component arranged in the seat body 130 and can contact the bearing member 120. The bearing portion 211 can be arranged in the seat body 130 in various ways, for example, the bearing portion 211 can be arranged in the seat body 130 by insertion, clamping or the like. The bearing portion 211 can adopt various structural forms, for example, the bearing portion 211 can be a block, a column or other shaped structure.
[0066] In the embodiments of the present application, the pressing portion 212 is a component arranged in the seat body 130 and is used to press the bearing portion 211. The pressing portion 212 can be arranged in the seat body 130 in various ways, for example, the bearing portion 211 can be arranged in the seat body 130 by insertion, screwing or the like. The pressing portion 212 can adopt various structural forms, for example, the pressing portion 212 can be a cone, a column or other shaped structure.
[0067] Through the above arrangement, by adjusting the pressing portion 212, the pressure applied by the bearing portion 211 to the bearing member 120 can be adjusted, so that the bearing member 120 abuts against the compression roller 110, thereby eliminating the radial play between the bearing member 120 and the compression roller 110. The structure is compact and reasonable and is convenient to disassemble and assemble.
[0068] According to some embodiments of the present application, please refer to Figure 4 The bearing portion 211 is configured as a block structure capable of elastic deformation.
[0069] In the embodiments of the present application, the bearing portion 211 can adopt an elastic body material capable of elastic deformation, for example, the bearing portion 211 is an elastic silica gel block or an elastic rubber block.
[0070] Through the above arrangement, when the pressure applied by the pressing portion 212 to the bearing portion 211 is adjusted, the bearing portion 211 can be elastically deformed without being easily damaged, and the adjustment requirement of the bearing portion 211 to the bearing member 120 can be met.
[0071] According to some embodiments of the present application, please refer to Figure 4The seat body 130 is provided with a receiving groove 131 for accommodating the abutting part 211, and the receiving groove 131 is provided with an opening on the side facing the bearing part 120; the side of the receiving groove 131 away from the opening is provided with an adjusting hole 132, and the pressing part 212 is arranged in the adjusting hole 132.
[0072] It can be understood that the receiving groove 131 is provided with an opening on the side facing the bearing part 120, and the part of the abutting part 211 exposed from the opening of the receiving groove 131 is in contact with the bearing part 120, and the pressing part 212 is arranged on the side of the receiving groove 131 away from the opening, so that the pressing part 212 presses the abutting part 211, and the abutting part 211 can press the bearing part 120.
[0073] In the embodiment of the present application, the receiving groove 131 is a groove arranged in the seat body 130 and used for accommodating the abutting part 211, the receiving groove 131 is provided with an opening on the side facing the bearing part 120, and the side of the receiving groove 131 away from the bearing part 120 is communicated with the adjusting hole 132, and the receiving groove 131 can have various shapes. For example, the abutting part 211 has a rectangular block structure, and correspondingly, the receiving groove 131 also has a square groove.
[0074] In the embodiment of the present application, the adjusting hole 132 is a hole arranged in the seat body 130 and used for accommodating the pressing part 212, and the adjusting hole 132 can have various shapes. For example, the abutting part 211 has a rectangular block structure, and correspondingly, the receiving groove 131 also has a square groove.
[0075] Through the above arrangement, the corresponding space in the seat body 130 can accommodate the abutting part 211 and the pressing part 212, and does not hinder the pressing cooperation among the abutting part 211, the pressing part 212 and the bearing part 120, the structure design is compact, and the space utilization rate of the seat body 130 is improved.
[0076] According to some embodiments of the present application, please refer to Figure 4 The adjusting hole 132 comprises a first hole section 132a and a second hole section 132b communicated in sequence, the inner diameter of the second hole section 132b is smaller than that of the first hole section 132a, and the second hole section 132b is located between the receiving groove 131 and the first hole section 132a; the pressing part 212 comprises a cap 212a and a rod body 212b connected with the cap 212a, the rod body 212b extends into the second hole section 132b after passing through the first hole section 132a, the rod body 212b is screwed with the second hole section 132b, and the cap 212a is limited outside the first hole section 132a.
[0077] It can be understood that the adjusting hole 132 includes a first hole section 132a and a second hole section 132b communicated in sequence along a radial direction of the adjusting hole 132, two ends of the second hole section 132b are communicated with the accommodating groove 131 and the first hole section 132a respectively, and an inner diameter of the second hole section 132b is smaller than an inner diameter of the first hole section 132a, so that the adjusting hole 132 is in a stepped hole shape. The rod body 212b of the pressing part 212 is threadedly connected with the second hole section 132b, and by rotating the pressing part 212, the length of the rod body 212b extending into the second hole section 132b can be adjusted, so that the pressure applied by the bearing part 211 to the bearing part 120 can be adjusted.
[0078] In the embodiment of the present application, the adjusting hole 132 includes the first hole section 132a and the second hole section 132b communicated in sequence, the inner diameter of the second hole section 132b is smaller than the inner diameter of the first hole section 132a, and the first hole section 132a and the second hole section 132b are both in a cylindrical shape. The depths of the first hole section 132a and the second hole section 132b can be adjusted according to actual needs.
[0079] In the embodiment of the present application, the pressing part 212 includes a cap 212a and a rod body 212b connected with the cap 212a, the outer diameter of the cap 212a is larger than the outer diameter of the rod body 212b, so that the rod body 212b can extend into the second hole section 132b after passing through the first hole section 132a, and the cap 212a is limited outside the first hole section 132a. The cap 212a and the rod body 212b are in an integrated structure, and the cap 212a and the rod body 212b can be integrally formed by casting, injection molding or the like.
[0080] Through the above arrangement, by rotating the pressing part 212, the length of the rod body 212b extending into the second hole section 132b can be adjusted, and the pressure applied by the bearing part 211 to the bearing part 120 can be adjusted, so that the radial play between the bearing part 120 and the compression roller 110 can be eliminated.
[0081] According to some embodiments of the present application, please refer to Figure 4 The play adjusting part 210 further includes an elastic part 213, the elastic part 213 is sleeved on the rod body 212b and is limited outside the first hole section 132a.
[0082] It should be noted that in the process of roll compounding the pole piece by the dry film forming equipment, the components will expand and contract due to temperature influence, which will affect the pressing effect of the pressing part 212 and the bearing part 211 on the bearing part 120, and the elastic part 213 can enable the pressing part 212 to maintain the pressing force on the bearing part 211.
[0083] In the embodiments of the present application, the elastic part 213 is a component sleeved on the rod body 212b and limited outside the first hole section 132a, and the elastic part 213 can adopt various structural forms, for example, the elastic part 213 is a spring. The number of the elastic part 213 is not limited to one, and when the number of the elastic part 213 is at least two, each elastic part 213 can be arranged in a stacked manner.
[0084] Through the above arrangement, the elastic part 213 can enable the pressing part 212 to maintain the pressing force on the abutting part 211, and reduce the probability that the pressing part 212 cannot press the abutting part 211 due to the influence of temperature.
[0085] According to some embodiments of the present application, please refer to Figure 2 , the elastic part 213 is configured as an axially elastic energy storage closed ring structure.
[0086] In the embodiments of the present application, the elastic part 213 is an axially elastic energy storage closed ring structure, and the elastic part 213 can adopt various structural forms, for example, the elastic part 213 is a closed circular ring. Alternatively, the elastic part 213 is a disc spring.
[0087] Through the above arrangement, the elastic part 213 is in a closed ring structure, which can better enable the pressing part 212 to maintain the pressing force on the abutting part 211, and can meet the pressing requirement of the abutting part 211 on the bearing 120.
[0088] According to some embodiments of the present application, please refer to Figure 3 and Figure 2 The dry film forming equipment further comprises an auxiliary adjusting assembly 300, the auxiliary adjusting assembly 300 is connected with the seat body 130 and the rack 400 respectively, and is used for inhibiting the movement of the pressure roller 110 in the first direction.
[0089] It can be understood that, since the pressure roller 110 will be subjected to rolling forces at both ends of the axial direction of the pressure roller 110 (i.e. the left and right ends of the pressure roller 110), when the rolling forces at the left and right ends of the pressure roller 110 are equal, the position of the pressure roller 110 will not be deviated, and the roll gap can be in a stable state; when the rolling forces at the left and right ends of the pressure roller 110 are unbalanced, the pressure roller 110 will move to the side with smaller force and be deviated, resulting in that the roll gaps at the left and right ends of the pressure roller 110 are inconsistent. Through the auxiliary adjusting assembly 300, the movement of the pressure roller 110 in the first direction can be inhibited, so that the roll gaps between the pressure rollers 110 are kept stable.
[0090] In the embodiments of the present application, the auxiliary adjusting assembly 300 is a component for inhibiting the movement of the compression roller 110 in the first direction, and the auxiliary adjusting assembly 300 is connected with the seat body 130 and the rack 400 respectively. The auxiliary adjusting assembly 300 and the seat body 130 and the rack 400 can be connected in various ways, for example, the auxiliary adjusting assembly 300 and the seat body 130 and the rack 400 are detachably connected.
[0091] Through the above arrangement, through the auxiliary adjusting assembly 300, the movement of the compression roller 110 in the first direction can be inhibited, so that the roll gap between the compression rollers 110 is kept stable, which is beneficial to improve the quality and the surface density consistency of the pole piece formed by roll pressing.
[0092] According to some embodiments of the present application, please refer to Figure 3 and Figure 2 The auxiliary adjusting assembly 300 comprises a first adjusting member 310, a second adjusting member 320, a limiting member 330 and a mounting seat 340. The mounting seat 340 is arranged on the rack 400 and has a limiting groove. The limiting member 330 is fixedly connected to the seat body 130 and at least partially extends into the limiting groove. The first adjusting member 310 and the second adjusting member 320 are movably arranged on the opposite sides of the limiting groove along the first direction. The first adjusting member 310 and the second adjusting member 320 are used to press the part of the limiting member 330 extending into the limiting groove, so as to inhibit the movement of the compression roller 110 in the first direction.
[0093] It should be noted that the limiting member 330 is fixedly connected to the seat body 130. Since the seat body 130 is arranged at both ends of the compression roller 110 along the axial direction of the compression roller 110, that is, the limiting member 330 is fixed with the compression roller 110. When the rolling forces of the left and right ends of the compression roller 110 are unbalanced, the first adjusting member 310 and the second adjusting member 320 can be adjusted to adjust the pressing force of the part of the limiting member 330 extending into the limiting groove, so as to inhibit the movement of the compression roller 110 in the first direction, so that the roll gap between the compression rollers 110 is kept stable.
[0094] In the embodiments of the present application, the first adjusting member 310 and the second adjusting member 320 are movably arranged on the opposite sides of the limiting groove along the first direction. The first adjusting member 310 and the second adjusting member 320 can be arranged on the limiting groove in various ways. For example, screw holes are arranged on the opposite sides of the limiting groove along the first direction. The first adjusting member 310 and the second adjusting member 320 are adjusting studs. The adjusting studs are arranged in the screw holes. By rotating the first adjusting member 310 and the second adjusting member 320, the pressing force of the part of the limiting member 330 extending into the limiting groove can be adjusted.
[0095] In the embodiments of the present application, the mounting seat 340 is a component provided on the rack 400 and having a limiting groove, and the limiting groove has a downwardly open slot so that the limiting member 330 at least partially extends into the limiting groove from the slot. The mounting seat 340 and the rack 400 can be connected in various ways, for example, the mounting seat 340 and the rack 400 are respectively provided with fixing holes, and fasteners such as bolts or screws are passed through the fixing holes to fix the mounting seat 340 to the rack 400.
[0096] In the embodiments of the present application, the limiting member 330 is a component fixedly connected to the seat body 130 and at least partially extending into the limiting groove, and the limiting member 330 and the seat body 130 can be connected in various ways. For example, the limiting member 330 and the seat body 130 are respectively provided with fixing holes, and fasteners such as bolts or screws are passed through the fixing holes to fix the limiting member 330 to the seat body 130. Alternatively, the limiting member 330 is a limiting plate.
[0097] Through the above arrangement, by adjusting the first adjusting member 310 and the second adjusting member 320, the pressure applied to the part of the limiting member 330 extending into the limiting groove is adjusted, the movement of the compression roller 110 in the first direction is inhibited, and the roll gap between the compression rollers 110 is kept stable, further improving the quality and surface density consistency of the pole piece formed by roll pressing and compounding.
[0098] According to some embodiments of the present application, please refer to Figure 3 and Figure 2 The auxiliary adjusting assembly 300 further comprises an elastic adjusting member 350 provided between the first adjusting member 310 and the limiting member 330.
[0099] In the embodiments of the present application, the elastic adjusting member 350 is a component provided between the first adjusting member 310 and the limiting member 330, and is used to provide a stable and adjustable thrust to the limiting member 330. The elastic adjusting member 350 is clamped between the first adjusting member 310 and the limiting member 330, and by adjusting the elastic adjusting member 350, the thrust to the limiting member 330 can be adjusted. The elastic adjusting member 350 can have various structural forms, and the number of the elastic adjusting member 350 is not limited to one, and the type and number of the elastic adjusting member 350 are not limited herein.
[0100] Through the above arrangement, the thrust to the limiting member 330 can be adjusted by the elastic adjusting member 350, and a stable and adjustable thrust is provided to the limiting member 330, thereby stably inhibiting the movement of the compression roller 110 in the first direction.
[0101] According to some embodiments of the present application, please refer to Figure 3 and Figure 2 The elastic adjusting member 350 is configured as a gas spring structure.
[0102] In the embodiments of the present application, the elastic adjusting member 350 is a gas spring structure, which uses controllable gas pressure to provide stable and adjustable thrust or buffer force to external components. For example, by pushing the piston rod of the gas spring structure with external force, the volume of the gas in the cylinder of the gas spring structure decreases, the pressure rises, and the gas potential energy stores energy; when the external force is removed, the gas expands, pushes the piston rod back and does work on the outside. Alternatively, the elastic adjusting member 350 is a nitrogen spring.
[0103] Through the above arrangement, the limiting member 330 can be provided with stable and adjustable thrust, and the movement of the compression roller 110 in the first direction can be better inhibited.
[0104] According to some embodiments of the present application, please refer to Figure 5 and Figure 6 , the roller assembly 100 further comprises a sliding member 140, the seat body 130 and the rack 400 are provided with a mounting gap in a second direction, the second direction intersects the first direction; the sliding member 140 is slidably arranged in the mounting gap, and the sliding member 140 is connected with the limiting member 330.
[0105] It should be noted that the second direction is the Y direction, i.e. the vertical direction, as shown in Figure 5 and Figure 6 .
[0106] Here, when assembly is needed, after the compression roller 110 is mounted on the rack 400, since the seat body 130 and the rack 400 are provided with a mounting gap in the vertical direction, the sliding member 140 can be inserted into the mounting gap, and then the sliding member 140 is locked with the limiting member 330; when disassembly is needed, the sliding member 140 is first unlocked with the limiting member 330, the limiting member 330 is removed, then the sliding member 140 is pulled out of the mounting gap, and finally the compression roller 110 is pulled out of the rack 400.
[0107] In the embodiments of the present application, the sliding member 140 is a component that is slidably arranged in the mounting gap and connected with the limiting member 330, and the sliding member 140 and the limiting member 330 can be connected in various ways, for example, mounting holes are respectively provided on the sliding member 140 and the limiting member 330, and fasteners such as screws or bolts are inserted into the mounting holes to detachably connect the sliding member 140 and the limiting member 330. The sliding member 140 can adopt various structural forms, for example, the sliding member 140 is a sliding plate.
[0108] Through the above arrangement, the sliding member 140 is slidably arranged in the mounting gap, which facilitates the quick disassembly of the compression roller 110 and improves the disassembly efficiency.
[0109] According to some embodiments of the present application, please refer to Figure 5 and Figure 6 , the sliding member 140 is configured as a plate-like structure with smooth surface.
[0110] In some embodiments of the present application, the sliding member 140 is a smooth-surfaced plate structure, which can be a rectangular plate, a circular plate or other shapes, and the shape of the sliding member 140 is not limited herein. Optionally, the sliding member 140 is a stainless steel plate or other plate materials.
[0111] Through the above arrangement, the sliding member 140 is a smooth-surfaced plate structure, which facilitates the smooth sliding of the sliding member 140 into and out of the installation gap, and is convenient to operate and reasonable in structural design.
[0112] Please refer to Figure 1 In some embodiments of the present application, the battery production system comprises the dry film forming device described above.
[0113] It should be noted that the battery production system described above further comprises an assembly device, which is arranged downstream of the dry film forming device and is used for further assembling the dry electrode tab and other components.
[0114] In the battery production system described above, at least one play adjustment assembly 200 is arranged on each of the opposite sides of the bearing member 120 along the horizontal direction, so that each play adjustment assembly 200 exerts pressure on the opposite sides of the bearing member 120 along the horizontal direction, and the radial play between the bearing member 120 and the compression roller 110 can be eliminated in both directions along the horizontal direction, so that the force acting on the opposite sides of the compression roller 110 along the horizontal direction is kept balanced, the probability of instability of the roll gap between the compression rollers 110 caused by unbalanced force is reduced, and the stability of the roll gap between the compression rollers 110 is facilitated to be maintained, thereby improving the consistency of the quality and surface density of the roll-pressed composite electrode tab.
[0115] According to some embodiments of the present application, please refer to Figures 1 to 6 In some embodiments of the present application, a dry film forming device comprises a roll-pressing assembly 100, a play adjustment assembly 200, an auxiliary adjustment assembly 300, a rack 400 and a sliding member 140. The roll-pressing assembly 100 is arranged in the rack 400, and comprises at least two compression rollers 110, a bearing member 120 and a seat body 130. The compression rollers 110 are arranged side by side along a first direction and form a roll-pressing channel 101 therebetween. The bearing member 120 is arranged in the seat body 130 and is arranged on each end of the compression roller 110 along the axial direction of the compression roller 110. The play adjustment assembly 200 is arranged outside the bearing member 120. At least one play adjustment assembly 200 is arranged on each of the opposite sides of the bearing member 120 along the first direction, and each play adjustment assembly 200 is configured to exert pressure on the opposite sides of the bearing member 120 along the first direction. The auxiliary adjustment assembly 300 is connected with the seat body 130 and the rack 400, respectively, and is used for inhibiting the movement of the compression roller 110 along the first direction. The seat body 130 and the rack 400 are provided with an installation gap in a second direction intersecting the first direction. The sliding member 140 is slidably arranged in the installation gap, and the sliding member 140 is connected with a limiting member 330.
[0116] The bearing member 120 has a first central axis perpendicular to the first direction, and all the clearance adjustment assemblies 200 are symmetrically distributed on both sides of the first central axis. Each clearance adjustment assembly 200 includes at least two clearance adjustment members 210. The bearing member 120 has a second central axis parallel to the first direction, and all the clearance adjustment members 210 of the same clearance adjustment assembly 200 are symmetrically distributed on both sides of the second central axis. The clearance adjustment member 210 includes an abutting portion 211, a pressing portion 212, and an elastic portion 213. The seat body 130 is provided with a receiving groove 131 for accommodating the abutting portion 211. The receiving groove 131 has an opening on one side of the bearing member 120. The side of the receiving groove 131 opposite to the opening is provided with an adjusting hole 132. The adjusting hole 132 includes a first hole section 132a and a second hole section 132b connected in sequence. The inner diameter of the second hole section 132b is smaller than that of the first hole section 132a. The second hole section 132b is located between the receiving groove 131 and the first hole section 132a. The pressing portion 212 includes a cap 212a and a rod body 212b connected with the cap 212a. The rod body 212b extends into the second hole section 132b after passing through the first hole section 132a. The rod body 212b is screwed with the second hole section 132b. The cap 212a is limited outside the first hole section 132a. The elastic portion 213 is sleeved on the rod body 212b and is limited outside the first hole section 132a.
[0117] According to some embodiments of the present application, referring to Figure 1 The battery production system in an embodiment includes the dry film forming device described above.
[0118] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the description of the present application. Especially, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.
Claims
1. A dry film forming apparatus characterized by comprising: The application relates to a roller mill, which comprises the following components: a rack (400); a roller assembly (100) arranged at two ends of the rack (400) along the axial direction of the roller assembly (100); the roller assembly (100) comprises at least two pressure rollers (110), bearing members (120) and a seat body (130); the pressure rollers (110) are arranged side by side along a first direction and form a roller pressing channel (101) between the pressure rollers (110); the bearing members (120) are arranged at two ends of each pressure roller (110) along the axial direction of the pressure roller (110) and are arranged in the seat body (130); a gap adjusting assembly (200) arranged outside the bearing member (120); wherein the bearing member (120) is provided with at least one gap adjusting assembly (200) on the opposite sides along the first direction; each gap adjusting assembly (200) is configured to press the opposite sides of the bearing member (120) along the first direction.
2. The dry film forming apparatus according to claim 1, wherein The bearing member (120) has a first central axis perpendicular to the first direction; and the gap adjusting assemblies (200) are symmetrically arranged on the two sides of the first central axis.
3. The dry film forming apparatus according to claim 1, wherein Each gap adjusting assembly (200) comprises at least two gap adjusting members (210); and the gap adjusting members (210) are arranged outside the bearing member (120).
4. The dry film forming apparatus according to claim 3, wherein The bearing member (120) has a second central axis parallel to the first direction; and the gap adjusting members (210) of the same gap adjusting assembly (200) are symmetrically arranged on the two sides of the second central axis.
5. The dry film forming apparatus according to claim 3, wherein The gap adjusting member (210) comprises a contact portion (211) and a pressing portion (212); the contact portion (211) is arranged in the seat body (130) and can contact the bearing member (120); and the pressing portion (212) is arranged in the seat body (130) and is used for pressing the contact portion (211) so that the contact portion (211) contacts the bearing member (120).
6. The dry film forming apparatus according to claim 5, wherein The contact portion (211) is a block structure capable of elastic deformation.
7. The dry film forming apparatus according to claim 5, wherein The seat body (130) is provided with a receiving groove (131) for accommodating the contact portion (211); and the side of the receiving groove (131) facing the bearing member (120) has an opening; The side of the receiving groove (131) away from the opening is provided with an adjusting hole (132); and the pressing portion (212) is arranged in the adjusting hole (132).
8. The dry film forming apparatus according to claim 7, wherein The adjusting hole (132) comprises a first hole section (132a) and a second hole section (132b) which are sequentially communicated; the inner diameter of the second hole section (132b) is smaller than that of the first hole section (132a); and the second hole section (132b) is located between the receiving groove (131) and the first hole section (132a). The pressing part (212) comprises a cap (212a) and a rod (212b) connected with the cap (212a), the rod (212b) extends into the second hole section (132b) through the first hole section (132a), the rod (212b) is screwed with the second hole section (132b), and the cap (212a) is limited outside the first hole section (132a).
9. The dry film forming apparatus according to claim 8, wherein The play adjusting part (210) further comprises an elastic part (213) sleeved on the rod (212b) and limited outside the first hole section (132a).
10. The dry film forming apparatus according to claim 9, wherein The elastic part (213) is configured as an axially elastic energy storage closed ring structure.
11. The dry film forming apparatus according to claim 1, wherein The dry film forming equipment further comprises an auxiliary adjusting assembly (300) connected with the seat body (130) and the rack (400) respectively and used for inhibiting the movement of the compression roller (110) in the first direction.
12. The dry film forming apparatus according to claim 11, wherein The auxiliary adjusting assembly (300) comprises a first adjusting part (310), a second adjusting part (320), a limiting part (330) and a mounting seat (340), the mounting seat (340) is arranged on the rack (400) and has a limiting groove, and the limiting part (330) is fixedly connected with the seat body (130) and at least partially extends into the limiting groove. The first adjusting part (310) and the second adjusting part (320) are movably arranged on opposite sides of the limiting groove along the first direction, and the first adjusting part (310) and the second adjusting part (320) are used for pressing the part of the limiting part (330) extending into the limiting groove, so as to inhibit the movement of the compression roller (110) in the first direction.
13. The dry film forming apparatus according to claim 12, wherein The auxiliary adjusting assembly (300) further comprises an elastic adjusting part (350) arranged between the first adjusting part (310) and the limiting part (330).
14. The dry film forming apparatus according to claim 13, wherein The elastic adjusting part (350) is configured as a gas spring structure.
15. The dry film forming apparatus according to claim 12, wherein The roller pressing assembly (100) further comprises a sliding part (140), the seat body (130) and the rack (400) are provided with a mounting gap in a second direction, and the second direction intersects the first direction. The sliding part (140) is slidably arranged in the mounting gap, and the sliding part (140) is connected with the limiting part (330).
16. The dry film forming apparatus according to claim 15, wherein The sliding part (140) is configured as a smooth-surfaced plate structure.
17. A battery production system characterized by comprising: The dry film forming equipment comprises the dry film forming equipment according to any one of claims 1-16.