Current collector composite device and dry coater

Abstract

The application discloses a current collector compounding device and a dry coating machine, wherein the current collector compounding device comprises a current collector supply mechanism for feeding a current collector, a mixture supply mechanism for feeding a mixture, and a rolling mechanism for rolling the current collector and the mixture, wherein the rolling mechanism comprises two pressure rollers, a roller gap is formed between the two pressure rollers, the current collector fed by the current collector supply mechanism and the mixture fed by the mixture supply mechanism enter the roller gap respectively, and the current collector and the mixture are arranged in the roller gap in sequence along the arrangement direction of the two pressure rollers; the rolling mechanism can complete the rolling of the mixture and the compounding of the current collector in one rolling, the equipment structure and the process are simplified, and the risk of breakage of an electrode film in a separate conveying process is avoided.

Description

Technical Field

[0001] This invention relates to the field of dry coating equipment, and particularly to a current collector composite device and a dry coating machine. Background Technology

[0002] One of the dry coating processes is as follows: the dry powder mixture after the original fiberization treatment falls through the feeding hopper to the pressure roller group of the roller pressing device for rolling to form an electrode film with self-supporting properties, such as a carbon film. The electrode film continues to be conveyed and compounded with the current collector, and then rolled by the pressure roller group of another roller pressing device to form an electrode sheet. However, because the electrode film formed by roller pressing has poor strength, there is a risk of breakage in the absence of a substrate to support it, which reduces the product qualification rate. Summary of the Invention

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a current collector composite device that avoids the risk of electrode film breakage during individual transport.

[0004] The present invention also proposes a dry coating machine.

[0005] According to a first aspect of the present invention, a current collector composite device includes: a current collector supply mechanism for discharging current collector, a mixing supply mechanism for discharging mixing material, and a rolling mechanism for rolling the current collector and the mixing material, wherein the rolling mechanism includes two pressure rollers, a roller gap is formed between the two pressure rollers, the current collector supplied by the current collector supply mechanism and the mixing material supplied by the mixing supply mechanism respectively enter the roller gap, and the current collector and the mixing material are arranged sequentially in the roller gap along the arrangement direction of the two pressure rollers.

[0006] The current collector composite device according to the embodiments of the present invention has at least the following beneficial effects: the roller pressing mechanism can complete the roller pressing of the mixture and the current collector in one roller pressing, simplifying the equipment structure and process, and avoiding the risk of the electrode film easily breaking during separate transportation.

[0007] In some embodiments of the present invention, the mixing supply mechanism includes a material channel assembly, the material channel assembly includes a transfer channel, the upper end of the transfer channel forms at least one inlet for receiving externally fed mixing material, and the transfer channel is configured with a uniforming component capable of conveying the mixing material to a position within the transfer channel other than the inlet.

[0008] In some embodiments of the present invention, the material leveling assembly includes a screw and a first rotary drive member capable of driving the screw to rotate. The screw is disposed in the transfer channel and is capable of pushing the mixed material in the transfer channel. The feed port is located at the starting end of the pushing path of the screw.

[0009] In some embodiments of the present invention, the material channel assembly further includes a discharge channel, the upper end of which is an input end connected to the transfer channel, and the lower end of which is a discharge end. The discharge channel is equipped with a batching component, which is capable of receiving a set amount of mixed material from the input end of the discharge channel and discharging the set amount of mixed material from the discharge end of the discharge channel.

[0010] In some embodiments of the present invention, the batching assembly includes an impeller and a second rotary drive member capable of driving the impeller to rotate. The impeller includes a rotating shaft rotatably disposed in the material discharge channel. The rotating shaft is provided with a plurality of partitions circumferentially. The partitions extend along the axial direction of the rotating shaft. A receiving bin is formed between two adjacent partitions. The receiving bin can be rotated to dock with the input end of the material discharge channel and receive a set amount of mixed material. The receiving bin can also be rotated to dock with the discharge end of the material discharge channel and output a set amount of mixed material.

[0011] In some embodiments of the present invention, the spacing between two adjacent partitions is adapted to the input end of the material discharge channel and the discharge end of the material discharge channel.

[0012] In some embodiments of the present invention, the mixing supply mechanism includes a material channel assembly, a conveyor belt assembly and an auxiliary pressure roller. The conveyor belt assembly is provided with a guide roller for supporting the end of the conveyor belt. A pre-compression zone is formed between the auxiliary pressure roller and the end of the conveyor belt, which can pre-compress the mixture into a film form.

[0013] In some embodiments of the present invention, the auxiliary pressure roller and / or the guide roller are equipped with a heating module.

[0014] In some embodiments of the present invention, the first pressure roller and / or the second pressure roller are hot rolling rollers.

[0015] In some embodiments of the present invention, the rotational speed of the first pressure roller and the rotational speed of the second pressure roller are not the same.

[0016] In some embodiments of the present invention, a feeding assembly is disposed above the roll gap, the upper end of the feeding assembly forms an opening for receiving the mixture fed by the mixing supply mechanism, the lower end of the feeding assembly forms an outlet for docking with the roll gap, baffles are respectively provided at both ends of the feeding assembly along the length direction of the roll gap, and the feeding assembly is configured with a feeding adjustment mechanism capable of adjusting the distance between the two sets of baffles.

[0017] In some embodiments of the present invention, the rolling mechanism is configured with an adjustment component capable of adjusting the width of the roll gap.

[0018] In some embodiments of the present invention, the current collector composite device further includes a frame, the first pressure roller is slidably disposed on the frame via a sliding seat, the second pressure roller is fixedly disposed on the frame via a fixed seat, the frame is configured with a pushing drive member capable of driving the first pressure roller to move toward the second pressure roller, the adjustment assembly includes a pushing member movably disposed between the sliding seat and the fixed seat and an adjustment drive assembly disposed on the frame, the adjustment drive assembly being capable of driving the pushing member to move so that the sliding seat moves relative to the fixed seat.

[0019] In some embodiments of the invention, the adjustment assembly further includes a displacement sensor capable of measuring the width of the roll gap.

[0020] In some embodiments of the present invention, the current collector composite device further includes a frame, the first pressure roller is slidably mounted on the frame via a sliding seat, and the second pressure roller is fixedly mounted on the frame via a fixed seat. The adjustment component includes a control unit and a push-drive component mounted on the frame. The push-drive component is a controllable push-drive component with controllable driving force. The controllable push-drive component can drive the first pressure roller to move toward the second pressure roller. A pressure sensor is provided between the controllable push-drive component and the first pressure roller. The control unit is connected to the pressure sensor and the controllable push-drive component respectively. The control unit can adjust the driving force of the controllable push-drive component according to the pressure value measured by the pressure sensor. When the thickness of the film material passing through the roller gap changes, the film material will exert a squeezing force on the first pressure roller, causing the pressure value measured by the pressure sensor to change. The control unit adjusts the driving force of the controllable push-drive component according to the detected value received from the pressure sensor.

[0021] In some embodiments of the present invention, the adjustment component further includes a displacement sensor capable of measuring the width of the roll gap. The control unit can adjust the driving force of the controllable pushing drive based on the detection value of the displacement sensor. The control unit can determine the film thickness output from the roll gap based on the detection value of the displacement sensor. When the film thickness cannot reach the set range, or when the areal density calculated by combining the film thickness and the detection result of the pressure sensor cannot meet the set requirements, the control unit adjusts the driving force of the controllable pushing drive.

[0022] In some embodiments of the present invention, the current collector composite device further includes a frame, the first pressure roller is slidably disposed on the frame via a sliding seat, the frame is configured with a push-driven member capable of driving the first pressure roller to move toward the second pressure roller, and the push-driven member is movably connected to the sliding seat.

[0023] In some embodiments of the present invention, the pushing drive member acts on the sliding seat through a push rod. The sliding seat is provided with a connector, which is a C-shaped structure with an opening facing the push rod. The end of the push rod is provided with a connecting head. The connecting head can be inserted into the connector from the side, and the connecting head cannot be withdrawn from the opening of the connector along the axial direction of the push rod. The connecting head can move within the connector along the axial direction of the push rod and move up and down along the axial direction of the push rod.

[0024] In some embodiments of the invention, the rolling mechanism is equipped with a displacement sensor capable of measuring the width of the roll gap.

[0025] In some embodiments of the present invention, the sliding seat is connected to the frame via a hydraulic balance cylinder or a balance cylinder.

[0026] A dry coating machine according to a second aspect of the present invention includes a current collector composite device according to any of the first aspects of the present invention described above.

[0027] The dry coating machine according to embodiments of the present invention has at least the following advantages: it simplifies the structure of the dry coating machine, avoids the risk of electrode film breakage during individual transport, and improves product qualification rate. Attached Figure Description

[0028] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0029] Figure 1 This is a schematic diagram of the current collector composite device according to an embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of the mixing and supply mechanism according to an embodiment of the present invention;

[0031] Figure 3 This is a schematic diagram of the mixing and supply mechanism according to an embodiment of the present invention;

[0032] Figure 4 This is a schematic diagram of the feeding assembly according to an embodiment of the present invention;

[0033] Figure 5 This is a schematic diagram of the current collector composite device according to an embodiment of the present invention;

[0034] Figure 6 This is a schematic diagram of the structure of the pushing member and the adjustment drive assembly according to an embodiment of the present invention;

[0035] Figure 7This is a front structural diagram of the current collector composite device (hidden mixing and supply mechanism) according to an embodiment of the present invention;

[0036] Figure 8 This is a schematic diagram of the dry coating machine according to an embodiment of the present invention;

[0037] Figure 9 This is a schematic diagram of the dry coating machine according to an embodiment of the present invention.

[0038] Figure label:

[0039] 100-type current collector supply unit;

[0040] Mixing and supply mechanism 200, transfer channel 210, screw component 211, first rotary drive component 212, material discharge channel 220, impeller 221, second rotary drive component 222, rotating shaft 223, partition plate 224, material channel assembly 230, conveyor belt assembly 240, conveyor belt 241, guide roller 242, auxiliary pressure roller 250;

[0041] Roller pressing mechanism 300, first pressure roller 310, sliding seat 311, connecting piece 313, second pressure roller 320, fixed seat 321, pushing piece 331, adjusting drive assembly 332, pressure sensor 333, displacement sensor 334, first connecting piece 335, second connecting piece 336, pushing drive piece 340, push rod 360, connecting head 361, hydraulic balance cylinder 370;

[0042] Feeding assembly 400, baffle plate 410, edge trimming device 500, thickness gauge 600, winding device 700;

[0043] Frame 900, current collector 910, mixing 920. Detailed Implementation

[0044] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0045] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this 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 limiting this invention.

[0046] In the description of this invention, the use of "first" and "second" is for the purpose of distinguishing technical features only, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0047] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0048] In the related technology, the dry coating process of the electrode sheet requires that the dry powder mixture after the original fiberization treatment is first dropped into the pressure roller group of the rolling device through the feeding hopper for rolling to form an electrode film with self-supporting characteristics, such as a carbon film. Then, the electrode film is continued to be conveyed and compounded with the current collector, and rolled by the pressure roller group of another rolling device to form an electrode sheet. However, since the electrode film formed by rolling is relatively weak, there is a risk of breakage in the absence of a substrate to support it, which makes it impossible to carry out the subsequent secondary rolling process normally or to produce qualified electrode sheets.

[0049] The following is for reference. Figures 1 to 9 A current collector composite device and a dry coating machine according to embodiments of the present invention are described.

[0050] like Figure 1 As shown, the current collector composite device according to an embodiment of the present invention includes: a current collector supply mechanism 100 for discharging current collector 910, a mixing supply mechanism 200 for discharging mixing material 920, and a rolling mechanism 300 for rolling current collector 910 and mixing material 920.

[0051] The roller pressing mechanism 300 includes two pressure rollers with a roller gap between them. The current collector 910 supplied by the current collector supply mechanism 100 and the mixture 920 supplied by the mixing supply mechanism 200 enter the roller gap respectively. The current collector 910 and the mixture 920 are arranged sequentially in the roller gap along the arrangement direction of the two pressure rollers, so that the roller pressing mechanism 300 can complete the roller pressing of the mixture 920 and the compounding of the current collector 910 in one roller pressing, avoiding the risk of the electrode film breaking easily during individual conveying.

[0052] Specifically, the rolling mechanism 300 includes a first pressure roller 310 and a second pressure roller 320, with a roller gap formed between the first pressure roller 310 and the second pressure roller 320. The current collector 910 supplied by the current collector supply mechanism 100 and the mixture 920 supplied by the mixing supply mechanism 200 enter the roller gap respectively. The mixture 920 and the current collector 910 are arranged sequentially in the roller gap along the arrangement direction of the first pressure roller 310 and the second pressure roller 320. The mixture 920 and the current collector 910 are rolled and compounded by the first pressure roller 310 and the second pressure roller 320, thereby completing the rolling of the electrode mixture and the compounding of the current collector in a set of rollers at the same time, simplifying the structure and process, and reducing the possibility of electrode film breakage.

[0053] It is conceivable that, in some embodiments of the present invention, the current collector supply mechanism 100 is an unwinding mechanism for releasing the wound current collector.

[0054] It is conceivable that, in some embodiments of the present invention, the mixing supply mechanism 200 includes a material channel assembly 230, the material channel assembly 230 includes a transfer channel 210, the upper end of the transfer channel 210 forms at least one inlet for receiving externally fed mixing material, the transfer channel 210 is configured with a material leveling component capable of conveying the mixing material to positions within the transfer channel 210 other than the inlet, so that the mixing material can be distributed to various positions of the transfer channel 210, reducing the occurrence of material shortages in some positions.

[0055] like Figure 2 , Figure 3 As shown, in some embodiments of the present invention, the material leveling assembly includes a screw 211 and a first rotary drive 212 capable of driving the screw 211 to rotate. The screw 211 is disposed within the transfer channel 210 and can push the mixture within the transfer channel 210. The feed inlet is located at the beginning of the pushing path of the screw 211. When the screw 211 rotates, it can transport the mixture fed in at the feed inlet to the end of the pushing path of the screw 211, thereby ensuring that the entire transfer channel 210 is filled with the mixture.

[0056] Specifically, the material channel assembly 230 has an elongated structure, forming a material channel from top to bottom. The transfer channel 210 is located at the upper part of the material channel, and a flared material receiving opening is formed above the transfer channel 210. The funnel for feeding the mixture is located above the starting end of the pushing path of the screw 211 and forms a feed inlet. After the mixture falls from the funnel to the transfer channel 210, it is pushed to the end of the pushing path of the screw 211 by the pushing action of the screw 211, so that the entire transfer channel 210 can be filled with the mixture. This ensures that the material output from the discharge end of the discharge channel 220 will not be unevenly mixed due to material shortage in some parts of the transfer channel 210, thereby improving the product qualification rate.

[0057] It is conceivable that, in some embodiments of the present invention, the first rotary drive member 212 is a motor mechanism fixedly disposed on the outside of the material channel assembly 230.

[0058] It is conceivable that, in some embodiments of the present invention, the screw members 211 can be configured as one or two groups as needed. When the screw members 211 are configured as two groups, the feed inlets can be configured as two, respectively set above the starting end of the pushing path of the two groups of screw members 211, which can improve the feeding speed.

[0059] It is conceivable that in some embodiments of the present invention, the screw member 211 may also be configured in three or more groups, which will not be described in detail here.

[0060] It is conceivable that, in some embodiments of the present invention, the material leveling component may also be a material feeding mechanism provided in the transfer channel 210, such as multiple feeders configured in the transfer channel 210, which disperse the mixed material to other positions outside the feed inlet.

[0061] It is conceivable that, in some embodiments of the present invention, the material channel assembly 230 further includes a discharge channel 220, the upper end of which is an input end connected to the transfer channel 210, the lower end of which is provided with a discharge end, and the discharge channel 220 is equipped with a batching assembly. The batching assembly can receive a set amount of mixed material from the input end of the discharge channel 220 and send the set amount of mixed material out from the discharge end of the discharge channel 220, thereby ensuring that the mixing supply mechanism 200 sends out a set amount of mixed material each time.

[0062] like Figure 2 , Figure 3 As shown, in some embodiments of the present invention, the batching assembly includes an impeller 221 and a second rotary drive 222 capable of driving the impeller 221 to rotate. The impeller 221 includes a rotating shaft 223 rotatably disposed in the material discharge channel 220. The rotating shaft 223 is provided with a plurality of partitions 224 in the circumferential direction. The partitions 224 extend along the axial direction of the rotating shaft 223. A receiving bin is formed between two adjacent partitions 224. The receiving bin can be rotated to dock with the input end of the material discharge channel 220 and receive a set amount of mixed material. The receiving bin can also be rotated to dock with the discharge end of the material discharge channel 220 and output a set amount of mixed material.

[0063] Specifically, multiple receiving bins of the same capacity are formed on the circumference of the impeller 221. The spacing between two adjacent partitions 224 is adapted to the input end and the discharge end of the discharge channel 220. Each time, the receiving bins output a fixed amount of material of equal length and width from the discharge end of the discharge channel 220 to the conveyor belt, which improves the uniformity of material discharge. When it is necessary to pause the material output, the rotation drive of the second rotary drive 222 can be paused, making the control more convenient.

[0064] It is conceivable that, in some embodiments of the present invention, the second rotary drive 222 is a motor assembly disposed outside the material channel assembly 230.

[0065] like Figure 2 As shown, in some embodiments of the present invention, the rotating shaft 223 is provided with six partitions 224 in all directions to form six receiving bins; it is conceivable that the number of partitions 224 can be set to three, four, five or more, etc., all of which can meet the function of quantitative material discharge.

[0066] It is conceivable that the batching component can also be two baffles spaced apart in the material discharge channel 220, forming a fixed batching chamber between the two baffles. By controlling the extension and retraction of the two baffles in an orderly manner, the function of quantitative material discharge can also be achieved.

[0067] like Figure 2 As shown, in some embodiments of the present invention, the mixing supply mechanism 200 includes a material channel assembly 230, a conveyor belt assembly 240 and an auxiliary pressure roller 250. The conveyor belt assembly 240 is provided with a roller 242 for supporting the end of the conveyor belt 241. A pre-compression zone is formed between the auxiliary pressure roller 250 and the end of the conveyor belt 241, which can pre-compress the mixture to a film form. The mixture is initially pre-compressed by the auxiliary pressure roller 250 to form a film form, and then fed into the roller gap.

[0068] Specifically, a gap is formed between the auxiliary pressure roller 250 and the end of the conveyor belt 241. The mixture is squeezed by the auxiliary pressure roller 250 at the end of the conveyor belt 241 to form a film-like structure, so that the mixture is not too loose and its compounding effect with the current collector is improved.

[0069] It should be noted that in this embodiment, the mixture is pre-pressed by the auxiliary pressure roller 250 and the conveyor belt 241 (overpass roller 242) to form a film-like structure, which cannot directly form an electrode film.

[0070] It is conceivable that, in some embodiments of the present invention, the auxiliary pressure roller 250 and / or the guide roller 242 are equipped with heating modules to hot press the mixture and improve the pre-pressing effect.

[0071] Specifically, both the auxiliary pressure roller 250 and the guide roller 242 have heating functions, and the heat can be conducted to the mixture to heat the mixture and improve the pre-compression effect.

[0072] It is conceivable that, in some embodiments of the present invention, the first pressure roller 310 and / or the second pressure roller 320 are hot rolling rollers, which can improve the composite effect of the pre-mixed fluid.

[0073] It is conceivable that in some embodiments of the present invention, the rotational speed of the first pressure roller 310 and the rotational speed of the second pressure roller 320 are inconsistent.

[0074] Specifically, the two pressure rollers form a speed difference, which generates a shearing force in the film material along the film material conveying direction, thus playing a rolling role. Compared with the two pressure rollers moving at the same speed, the roller pressing mechanism of this invention can press the film material to a preset thickness with a smaller force.

[0075] It is conceivable that, in some embodiments of the present invention, a feeding assembly 400 is disposed above the roll gap, the upper end of the feeding assembly 400 forms an opening for receiving the mixed material 920 fed by the mixing supply mechanism 200, the lower end of the feeding assembly 400 forms an outlet for docking with the roll gap, and baffle plates 410 are respectively provided at both ends of the feeding assembly 400 along the length direction of the roll gap, and the feeding assembly 400 is provided with a feeding adjustment mechanism capable of adjusting the distance between the two sets of baffle plates 410 to adapt to film materials of different widths.

[0076] Specifically, such as Figure 4 As shown, the feeding adjustment mechanism is a screw mechanism. The two sets of baffles 410 are respectively set on the frame 900 through the screw mechanism. By rotating the screw, the distance between the two sets of baffles 410 can be adjusted.

[0077] It is conceivable that, in some embodiments of the present invention, the feeding adjustment mechanism may also be a cam pressing mechanism, which adjusts the position of the baffle plate 410 by pressing the baffle plate 410 with the cam.

[0078] It is conceivable that, in some embodiments of the present invention, the roller pressing mechanism 300 is equipped with an adjusting component capable of adjusting the width of the roller gap to adjust the roller gap according to actual needs.

[0079] Specifically, by adjusting the width of the roller gap, the thickness and areal density of the finished film can be adjusted to ultimately obtain the ideal film.

[0080] like Figure 5 , Figure 6 As shown, in some embodiments of the present invention, the current collector composite device further includes a frame 900. A first pressure roller 310 is slidably disposed on the frame 900 via a sliding seat 311, and a second pressure roller 320 is fixedly disposed on the frame 900 via a fixed seat 321. The frame 900 is provided with a pushing drive member 340 capable of driving the first pressure roller 310 to move toward the second pressure roller 320, so that the first pressure roller 310 always generates a squeezing force toward the second pressure roller 320 during the rolling process to roll the film material. The adjustment assembly includes a pushing member 331 movably disposed between the sliding seat 311 and the fixed seat 321 and an adjustment drive assembly 332 disposed on the frame 900. The adjustment drive assembly 332 can drive the pushing member 331 to move so that the sliding seat 311 moves relative to the fixed seat 321, thereby adjusting the width of the roller gap.

[0081] Specifically, the pressing member 331 is an angled member, preferably an inclined iron assembly. The first connecting member 335 and the second connecting member 336 are respectively connected to the sliding seat 311 and the fixed seat 321. A gap matching the inclined iron assembly is formed between the first connecting member 335 and the second connecting member 336. When the adjusting drive assembly 332 drives the inclined iron assembly to move, the sliding seat 311 and the fixed seat 32 are squeezed by the first connecting member 335 and the second connecting member 336 respectively, thereby adjusting the distance between the first pressure roller 310 and the second pressure roller 320.

[0082] like Figure 6 As shown, in some embodiments of the present invention, the adjustment drive assembly 332 includes a rotary drive member and a screw connected to the rotary drive member. The screw is connected to or presses against the push member 331. The rotary drive member can drive the screw and the push member 331 to rise and fall, thereby adjusting the distance between the first connector 335 and the second connector 336.

[0083] It is conceivable that, in some embodiments of the present invention, the adjustment drive assembly 332 may also be a lead screw mechanism, which drives the lead screw to rotate through a motor. The lead screw and the pusher 331 are threadedly engaged, which can also realize the lifting and lowering drive of the pusher 331.

[0084] It is conceivable that, in some embodiments of the present invention, the push drive 340 is a hydraulic cylinder.

[0085] Specifically, the hydraulic cylinder can be a conventional hydraulic cylinder, meaning that the hydraulic cylinder does not need to have stroke control function.

[0086] In some embodiments of the present invention, in order to make the thickness of the electrode sheet obtained by roll pressing tend to be constant, a blocking component such as a wedge assembly is provided between the sliding seat 311 and the fixed seat 321. The wedge assembly has toughness. The first pressure roller 310 is connected to the pushing drive component 340, so that the first pressure roller 310 always generates a squeezing force toward the second pressure roller 320 during the roll pressing process. This process also squeezes the blocking component, and the gap between the two pressure rollers is relatively controllable through the blocking component.

[0087] In some embodiments of the present invention, the adjustment assembly further includes a displacement sensor 334 capable of measuring the width of the roll gap, the displacement sensor 334 being able to check the actual width of the roll gap to provide a reference for the adjustment assembly.

[0088] In addition, the force generated by the push drive component 340 not only pushes the pressure roller to squeeze the mixture, but also causes the wedge assembly to deform. After the wedge assembly is deformed by long-term extrusion, its strength will change. When the barrier component is squeezed with the same force, the degree of shrinkage of the barrier component will change, and the width of the roll gap will also change. At this time, the adjustment of the roll gap is more troublesome. By configuring the displacement sensor 334, the roll gap width can be measured in real time. When the roll gap changes, it indicates that the wedge assembly has deformed and needs to be replaced.

[0089] In some embodiments of the present invention, when the push drive 340 is a servo hydraulic cylinder or other hydraulic cylinder that can control the output pressure and push rod stroke, the output pressure of the hydraulic cylinder can be adjusted after the wedge assembly is deformed, which can also achieve the purpose of roll gap control.

[0090] In some embodiments of the present invention, when using the wedge assembly to set the thickness, the hydraulic cylinder can be paused to facilitate adjustment of the wedge assembly.

[0091] like Figure 7 , Figure 8 As shown, in some embodiments of the present invention, the current collector composite device further includes a frame 900. The first pressure roller 310 is slidably mounted on the frame 900 via a sliding seat 311, and the second pressure roller 320 is fixedly mounted on the frame 900 via a fixed seat 321. The adjustment component includes a control unit and a push-drive component 340 mounted on the frame 900. The push-drive component 340 is a controllable push-drive component with controllable driving force. The controllable push-drive component can drive the first pressure roller 310 to move toward the second pressure roller 320. A pressure sensor 333 is provided between the controllable push-drive component and the first pressure roller 310. The control unit is connected to the pressure sensor 333 and the controllable push-drive component respectively. The control unit can adjust the driving force of the controllable push-drive component according to the pressure value measured by the pressure sensor 333. This driving force interacts with the force exerted by the film material to adjust the width of the roller gap.

[0092] Specifically, when the thickness of the film material passing through the roller gap changes, the film material will exert a squeezing force on the first pressure roller 310, causing the pressure value measured by the pressure sensor 333 to change. The control unit adjusts the driving force of the controllable pushing drive component according to the detected value of the pressure sensor.

[0093] like Figure 7 , Figure 8 As shown, in some embodiments of the present invention, the adjustment assembly further includes a displacement sensor 334 capable of measuring the width of the roll gap, and the control unit is capable of adjusting the driving force of the controllable push drive member according to the detection value of the displacement sensor 334, so as to adjust the roll gap to a set width.

[0094] Specifically, the control unit can determine the thickness of the film material output from the roll gap based on the detection value of the displacement sensor 334. When the film material thickness cannot reach the set range, or when the areal density (mass per unit area of ​​film material of a specified thickness) calculated by combining the film material thickness and the detection result of the pressure sensor 333 cannot meet the set requirements, the control unit adjusts the driving force of the controllable push drive until both reach the allowable range to obtain a qualified finished film material.

[0095] It is conceivable that, in some embodiments of the present invention, the controllable pushing drive is a servo hydraulic cylinder.

[0096] like Figure 7 , Figure 8 As shown, in some embodiments of the present invention, the current collector composite device further includes a frame 900. The first pressure roller 310 is slidably disposed on the frame 900 via a sliding seat 311, and the second pressure roller 320 is fixedly disposed on the frame 900 via a fixed seat 321. The frame 900 is provided with a pushing drive member 340 capable of driving the first pressure roller 310 to move toward the second pressure roller 320. The pushing drive member 340 is movably connected to the sliding seat 311 to reduce processing errors.

[0097] Specifically, the sliding seat 311 and the frame 900 are slidably connected by a sliding structure such as a slide rail. Since the electrode film or electrode sheet of the dry electrode has high precision requirements, and the force direction of the push drive 340 is difficult to ensure that it is in the same direction as the axis of the slide rail in actual application, by setting the push drive 340 and the sliding seat 311 to be movably connected, the processing error caused by parallelism can be reduced.

[0098] like Figure 7 , Figure 8 As shown, in some embodiments of the present invention, the push drive 340 acts on the sliding seat 311 through the push rod 360. The sliding seat 311 is provided with a connector 313, which is a C-shaped structure with its opening facing the push rod 360. The end of the push rod 360 is provided with a connecting head 361. The connecting head 361 can be inserted into the connector 313 from the side, and the connecting head 361 cannot be withdrawn from the opening of the connector 313 along the axial direction of the push rod 360. The connecting head 361 can move along the axial direction of the push rod 360 and move up and down along the axial direction of the push rod 360 within the connector 313. Through the above structure, the push drive 340 will not form a rigid connection, and the normal driving of the sliding seat 311 by the push drive 340 can be guaranteed.

[0099] Specifically, the opening of the C-shaped structure of the connector 313 is smaller than the outer contour of the connecting head 361, thus restricting its passage. The opening of the C-shaped structure of the connector 313 is larger than the rod size of the push rod 360, thus allowing the connecting head 361 to move up and down in the axial direction of the push rod 360 within the connector 313. The C-shaped structure of the connector 313 is larger than the outer contour of the connecting head 361, thus allowing the connecting head 361 to move axially and up and down in the axial direction of the push rod 360 within the connector 313. When the push rod 360 is not parallel to the slide rail, the sliding seat 311 can also move normally in the extension direction of the slide rail, without causing squeezing or jamming due to movement that is not on the same axis as the slide rail.

[0100] It is conceivable that, in some embodiments of the present invention, the rolling mechanism may be configured with a displacement sensor 334 capable of measuring the width of the roll gap. In use, the actual displacement of the sliding seat 311 can be tested based on the displacement sensor. When the push rod 360 is not parallel to the slide rail, the pressure required to be output by the servo hydraulic cylinder can be fitted based on the actual displacement of the sliding seat 311 rather than the displacement of the push rod 360, thereby controlling the stroke of the sliding seat 311.

[0101] It is conceivable that, in some embodiments of the present invention, the push drive 340 and the sliding seat 311 can be connected by other movable connection structures, such as providing a slot on the output push rod of the push drive 340 and providing a connecting part on the sliding seat 311 that can be inserted into the slot, which can also realize the movable connection between the push drive 340 and the sliding seat 311.

[0102] like Figure 7 As shown, in some embodiments of the present invention, the sliding seat 311 is connected to the frame 900 via a hydraulic balance cylinder 370 to improve the stability of the first pressure roller 310.

[0103] Specifically, hydraulic balance cylinders 370 are respectively installed on the upper and lower parts of the sliding seat 311, and the push drive component 340 is located in the middle of the sliding seat 311. Since the push rod 360 and the sliding seat 311 can move along the axial direction of the push rod 360, when the film material passing through the gap between the two rollers becomes thinner, the first pressure roller 310, which loses the reaction force of the film material, will have a tendency to suddenly move in the direction of the film material. This movement is caused by inertia and will generate an uncontrollable force on the film material. At this time, the hydraulic balance cylinder 370 can play a restraining role on the first pressure roller 310, preventing the first pressure roller 310 from sliding unstablely due to inertia, thereby improving the stability of the first pressure roller 310.

[0104] At this time, the pressure sensor reading will change. If the obtained reading continues to maintain the changed data after a preset time period, the output pressure of the servo hydraulic cylinder can be adjusted to drive the first pressure roller 310 to approach the second pressure roller 320, so that the force on the film material is restored to the original preset force.

[0105] It is conceivable that, in some embodiments of the present invention, the sliding seat 311 is connected to the frame 900 via a balance cylinder, which can also improve the stability of the first pressure roller 310.

[0106] It should be noted that in the above description, the installation relationship between the first pressure roller 310, the second pressure roller 320 and the sliding seat 311 and the fixed seat 321 is defined for specific embodiments. The first and second are used to distinguish different pressure rollers. In the specific implementation process, the pressure roller installed on the sliding seat 311 can be defined as the second pressure roller, and the pressure roller installed on the fixed seat 321 can be defined as the first pressure roller. This will not be described in detail here.

[0107] Reference Figure 8 , Figure 9 According to a second aspect of the present invention, a dry coating machine includes a current collector composite device according to any of the first aspects of the present invention. This simplifies the structure of the dry coating machine, avoids the risk of electrode film breakage during individual transport, and improves product qualification rate.

[0108] Specifically, the dry coating machine includes a current collector supply mechanism 100, a mixing supply mechanism 200, a rolling mechanism 300, an edge trimming device 500, a thickness gauge 600, and a winding device 700. The edge trimming device 500 is used to cut the edges of the film material. The thickness gauge 600 can determine the actual thickness of the film material. Because some of the film material rebounds after rolling, the actual thickness is wider than the roll gap thickness. Due to the action of the front rolling device, the areal density of the film material can approach the standard areal density. When the areal density of the film material meets the standard, and the actual thickness of the film material measured by the thickness gauge 600 is within the allowable thickness range, it can be said that the section of film material meets the requirements. Otherwise, the non-compliant film material needs to be marked.

[0109] Of course, the present invention is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A current collector composite device, characterized by, include: A current collector supply mechanism is used to deliver current collectors. A mixing supply mechanism, used to deliver mixed materials; The roller pressing mechanism includes a first pressure roller and a second pressure roller, with a roller gap formed between the first pressure roller and the second pressure roller. The current collector supplied by the current collector supply mechanism and the mixture supplied by the mixing mechanism respectively enter the roller gap, and the mixture and the current collector are arranged sequentially in the roller gap along the arrangement direction of the first pressure roller and the second pressure roller. The roller pressing mechanism is equipped with an adjustment component capable of adjusting the width of the roller gap; The current collector composite device further includes a frame, the first pressure roller is slidably mounted on the frame via a sliding seat, and the second pressure roller is fixedly mounted on the frame via a fixed seat. The frame is equipped with a pushing drive member capable of driving the first pressure roller to move toward the second pressure roller. The adjustment assembly includes a pushing member movably mounted between the sliding seat and the fixed seat, and an adjustment drive assembly mounted on the frame. The adjustment drive assembly can drive the pushing member to move so that the sliding seat moves relative to the fixed seat. The current collector composite device further includes a frame. The first pressure roller is slidably mounted on the frame via a sliding seat, and the second pressure roller is fixedly mounted on the frame via a fixed seat. The adjustment component includes a control unit and a push-drive component mounted on the frame. The push-drive component is a controllable push-drive component with controllable driving force. The controllable push-drive component can drive the first pressure roller to move toward the second pressure roller. A pressure sensor is provided between the controllable push-drive component and the first pressure roller. The control unit is connected to the pressure sensor and the controllable push-drive component respectively. The control unit can adjust the driving force of the controllable push-drive component according to the pressure value measured by the pressure sensor. The pushing component is a wedge assembly. The first connecting member and the second connecting member are respectively connected to the sliding seat and the fixed seat. A gap matching the wedge assembly is formed between the first connecting member and the second connecting member. When the adjusting drive assembly drives the wedge assembly to move, it squeezes the sliding seat and the fixed seat through the first connecting member and the second connecting member, thereby increasing the distance between the first pressure roller and the second pressure roller. A barrier component is provided between the sliding seat and the fixed seat. The barrier component is a wedge assembly. The first pressure roller is connected to the pushing drive component, so that the first pressure roller always generates a squeezing force toward the second pressure roller during the rolling process, while squeezing the barrier component. The gap between the two pressure rollers is relatively controllable through the barrier component. The mixing and supply mechanism includes a material channel assembly, a conveyor belt assembly, and an auxiliary pressure roller. The conveyor belt assembly is provided with a passing roller for supporting the end of the conveyor belt. A pre-compression zone is formed between the auxiliary pressure roller and the end of the conveyor belt, which can pre-compress the mixture to a film form. The mixture is initially pre-compressed to form a film form by the auxiliary pressure roller and the passing roller. The auxiliary pressure roller and / or the through roller are equipped with a heating module.

2. The current collector composite device according to claim 1, characterized in that, The mixing supply mechanism includes a material channel assembly, which includes a transfer channel. The upper end of the transfer channel forms at least one inlet for receiving externally fed mixing material. The transfer channel is equipped with a uniform material assembly capable of conveying the mixing material to a position within the transfer channel other than the inlet.

3. The current collector composite device according to claim 2, characterized in that, The material channel assembly also includes a discharge channel, the upper end of which is an input end that connects to the transfer channel, and the lower end of which is a discharge end. The discharge channel is equipped with a batching component, which can receive a set amount of mixed material from the input end of the discharge channel and send the set amount of mixed material out from the discharge end of the discharge channel.

4. The current collector composite device according to claim 1, characterized in that, A feeding assembly is disposed above the roll gap. The upper end of the feeding assembly forms an opening for receiving the mixed material fed by the mixing supply mechanism. The lower end of the feeding assembly forms an outlet for docking with the roll gap. Baffle plates are respectively provided at both ends of the feeding assembly along the length direction of the roll gap. The feeding assembly is equipped with a feeding adjustment mechanism that can adjust the distance between the two sets of baffle plates.

5. The current collector composite device according to claim 1, characterized in that, The current collector composite device also includes a frame, the first pressure roller is slidably mounted on the frame via a sliding seat, the frame is equipped with a push-driven component capable of driving the first pressure roller to move toward the second pressure roller, and the push-driven component is movably connected to the sliding seat.

6. The current collector composite device according to claim 1 or 5, characterized in that, The rolling mechanism is equipped with a displacement sensor capable of measuring the width of the roll gap.

7. A dry coater characterized by comprising: include: The current collector composite device as described in any one of claims 1 to 6.

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