WO2023093247A1 - 辊压装置及辊压系统 - Google Patents

辊压装置及辊压系统 Download PDF

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Publication number
WO2023093247A1
WO2023093247A1 PCT/CN2022/120302 CN2022120302W WO2023093247A1 WO 2023093247 A1 WO2023093247 A1 WO 2023093247A1 CN 2022120302 W CN2022120302 W CN 2022120302W WO 2023093247 A1 WO2023093247 A1 WO 2023093247A1
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WO
WIPO (PCT)
Prior art keywords
rolling
heat exchange
roll
axial direction
assembly
Prior art date
Application number
PCT/CN2022/120302
Other languages
English (en)
French (fr)
Inventor
王勇
车欢
倾亚龙
Original Assignee
宁德时代新能源科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 宁德时代新能源科技股份有限公司 filed Critical 宁德时代新能源科技股份有限公司
Priority to EP22897333.5A priority Critical patent/EP4353373A1/en
Publication of WO2023093247A1 publication Critical patent/WO2023093247A1/zh
Priority to US18/416,891 priority patent/US20240157420A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/04—Processes of manufacture in general
    • H01M4/043—Processes of manufacture in general involving compressing or compaction
    • H01M4/0435—Rolling or calendering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/06—Lubricating, cooling or heating rolls
    • B21B27/10—Lubricating, cooling or heating rolls externally
    • B21B2027/103—Lubricating, cooling or heating rolls externally cooling externally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/06—Lubricating, cooling or heating rolls
    • B21B27/10—Lubricating, cooling or heating rolls externally
    • B21B27/106—Heating the rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/16—Control of thickness, width, diameter or other transverse dimensions
    • B21B37/165—Control of thickness, width, diameter or other transverse dimensions responsive mainly to the measured thickness of the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
    • B21B37/30—Control of flatness or profile during rolling of strip, sheets or plates using roll camber control
    • B21B37/32—Control of flatness or profile during rolling of strip, sheets or plates using roll camber control by cooling, heating or lubricating the rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • B21B38/006—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • B21B38/04—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring thickness, width, diameter or other transverse dimensions of the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0269—Cleaning
    • B21B45/0275—Cleaning devices
    • B21B45/0287—Cleaning devices removing solid particles, e.g. dust, rust

Definitions

  • the present application relates to the field of rolling manufacturing, in particular, to a rolling device and a rolling system.
  • Power batteries are widely used in the field of new energy, such as electric vehicles, new energy vehicles, etc. New energy vehicles and electric vehicles have become a new trend in the development of the automotive industry. In the production process of power batteries, the pole pieces need to be rolled. At present, the thickness consistency of the rolled pole piece is poor, resulting in poor performance and consistency of the power battery.
  • the purpose of the embodiments of the present application is to provide a rolling device and a rolling system, which aim to improve the problem of poor thickness consistency of rolled pole pieces in the related art.
  • an embodiment of the present application provides a rolling device, the rolling device includes a roll, a heat exchange assembly and an adjustment assembly, the roll has a rolling surface for rolling a target piece; the heat exchange The assembly is arranged opposite to the rolling surface, and the heat exchange assembly is used to adjust the temperature of the rolling surface; the adjustment assembly is connected to the heat exchange assembly, and the adjustment assembly is used to adjust the heat exchange assembly at The axial position of the roll.
  • the rolling device adjusts the position of the heat exchange assembly in the axial direction of the roll by setting the adjustment assembly, so that the heat exchange assembly can adjust the temperature of different regions of the rolling surface of the roll in the axial direction.
  • the principle of expansion and contraction makes the different areas of the rolling surface in the axial direction thermally expand or cool and contract, so that the roll gap in the axial direction of the roll during rolling (located on both sides of the target piece and used to contact the target piece
  • the gap formed between the two rolls can also be understood as the same size as the gap between the two rolls that roll the target piece), so as to improve the thickness consistency of the target piece and improve the performance and consistency of the power battery.
  • the heat exchange assembly includes a heating element, the heating element is arranged opposite to the rolling surface, the heating element is connected to the adjustment assembly, and the adjustment assembly Used to adjust the position of the heating element in the axial direction.
  • the heating element can heat the rolling surface, so that the local temperature of the rolling surface rises and then expands, so that the larger roll gap is reduced to the same size as other roll gaps.
  • the adjustment assembly can adjust the position of the heating element in the axial direction, so that the heating element can heat different areas of the rolling surface in the axial direction, and then realize the adjustment of the size of the roll gap corresponding to multiple different areas, so that in the axial direction
  • the size of the upper roll gap tends to be consistent, so as to improve the thickness consistency of the target part after rolling, and improve the performance and consistency of the power battery.
  • the heat exchange assembly includes a cooling element, the cooling element is arranged opposite to the rolling surface, the cooling element is connected to the adjustment assembly, and the adjustment assembly It is used to adjust the position of the cooling element in the axial direction.
  • the cooling member can cool the rolling surface, so that the local temperature of the rolling surface decreases and then shrinks, so that the smaller roll gap is enlarged to be consistent with other roll gaps.
  • the adjustment assembly can adjust the position of the cooling element in the axial direction, so that the cooling element can cool different areas of the rolling surface in the axial direction, and then realize the adjustment of the size of the roll gap corresponding to multiple different areas, so that in the axial direction
  • the size of the upper roll gap tends to be consistent, so as to improve the thickness consistency of the target part after rolling, and improve the performance and consistency of the power battery.
  • the heat exchange assembly includes a plurality of cooling elements, and the plurality of cooling elements correspond to a plurality of regions of the rolling surface along the axial direction, each Each of the cooling elements is used to individually adjust the temperature of a zone.
  • the temperature of multiple different regions of the rolling surface in the axial direction can be adjusted at one time, meeting the temperature adjustment requirements of multiple different regions, and further improving the thickness consistency of the target part , to improve the performance and consistency of the power battery.
  • the cooling member is used to spray a cooling medium to the rolling surface to adjust the temperature of the rolling surface.
  • the temperature of the rolling surface is adjusted by spraying the cooling medium.
  • the cooling efficiency is high;
  • the impurities on the rolling surface are separated from the rolling surface to achieve the effect of cleaning the rolling surface, so that the rolling surface is clean and free of debris, avoiding the existence of debris and reducing the size of the roll gap corresponding to the location of the debris, which is beneficial to the axial direction of the roll
  • the size of the roll gap is consistent, which is conducive to improving the thickness consistency of the target part.
  • the rolling device further includes a dust removal mechanism, and the dust removal mechanism is arranged opposite to the rolling surface.
  • the dust removal mechanism and the cooling element are arranged on the same side of the roll.
  • the adjustment assembly includes a guide member and a drive member, the guide member extends along the axial direction of the roll, and the heat exchange assembly is movably connected to the A guide member, the drive member is drivingly connected to the heat exchange assembly, and the drive member is used to drive the heat exchange assembly to move along the guide member.
  • the guide can play a guiding role, restricting the movement of the heat exchange assembly in a direction deviating from the axial direction of the roll, so that the heat exchange assembly can move along the axial direction, so as to ensure that the heat exchange assembly is axially aligned with the rolling surface. heat exchange in different regions.
  • the driving part it is convenient to drive the heat exchanging assembly to move along the guide, so as to adjust the position of the heat exchanging assembly in the axial direction of the roll.
  • the heat exchange assembly has a heat exchange surface, the heat exchange surface is opposite to the rolling surface, the heat exchange surface is an arc surface, and the heat exchange surface The surface is arranged coaxially with the roll.
  • the heat exchange surface is set as an arc surface to match the rolling surface.
  • the heat exchange surface and the roll are coaxially arranged, on the one hand, the contact between the heat exchange surface and the rolling surface can be avoided; It can better exchange heat on the rolling surface, and prevent the uneven heating of the rolling surface from affecting the adjustment effect of the roll gap.
  • the embodiment of the present application also provides a rolling system, the rolling system includes the above-mentioned rolling device, a measuring device and a controller, the measuring device is used to measure the target part after rolling thickness; the controller communicates with the measuring device and the adjustment assembly, the controller is configured to control the adjustment assembly according to the measurement value of the measurement device, and adjust the heat exchange assembly in the The position in the axial direction of the roll is such that the heat exchange assembly adjusts the temperature of different regions of the rolling surface in the axial direction.
  • the rolling system further includes a temperature detection device, the temperature detection device is connected to the controller in communication, and the temperature detection device is used to detect the temperature of the rolling surface the temperature in different regions in the axial direction; the controller is configured to control the adjustment assembly according to the measurement value of the measurement device and the detection value of the temperature detection device, and adjust the heat exchange assembly at the The position in the axial direction of the roll is adjusted so that the heat exchange assembly adjusts the temperature of different regions of the rolling surface in the axial direction.
  • the temperature of different regions of the rolling surface in the axial direction is detected, and the detected value is sent to the controller, so that the entire system forms a negative feedback adjustment, which is beneficial to control the rolling pressure.
  • the degree of thermal expansion and contraction of different areas of the surface makes the thickness consistency of the target part better.
  • FIG. 1 is a schematic diagram of a rolling system provided by some embodiments of the present application.
  • FIG. 2 is a schematic structural view of a rolling device provided in some embodiments of the present application.
  • FIG. 3 is a schematic structural view of a rolling device provided in other embodiments of the present application.
  • Fig. 4 is a structural schematic diagram of a rolling device provided in some other embodiments of the present application.
  • Fig. 5 is a schematic structural diagram of a cooling element provided in some embodiments of the present application.
  • Fig. 6 is a schematic structural diagram of a heating element provided by some embodiments of the present application.
  • Icons 10-rolling device; 20-measuring device; 30-controller; 40-temperature detection device; 100-roller; 110-rolling surface; 200-heat exchange component; 210-heating element; 211-heat exchange surface ; 220-cooling part; 221-spray head; 2211-nozzle; 300-regulating assembly; 400-dust removal mechanism;
  • multiple refers to more than two (including two), similarly, “multiple groups” refers to more than two groups (including two), and “multiple pieces” refers to More than two pieces (including two pieces).
  • Power batteries are not only used in energy storage power systems such as hydraulic, thermal, wind and solar power plants, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric vehicles, as well as military equipment and aerospace and other fields . With the continuous expansion of power battery application fields, its market demand is also constantly expanding.
  • the pole pieces need to be rolled.
  • the thickness consistency of the rolled pole piece is poor, resulting in poor performance and consistency of the power battery.
  • the inventor has found through research that there is an error in the manufacturing accuracy of the rolls in the prior art, so that a roll gap (located between the two rolls on both sides of the target piece and used to contact the target piece) is formed in the axial direction of the roll during rolling.
  • the gap which can also be understood as the gap between the two rolls that match the rolling target piece
  • the gap is inconsistent in size, the roll gap of a certain section is larger, and the roll gap of another section is smaller.
  • the thickness of the pole piece extruded by the roll will also change accordingly, that is, the part with a large roll gap corresponds to a larger thickness of the pole piece, and the part with a small roll gap corresponds to a larger thickness of the pole piece.
  • the thickness is smaller.
  • the thickness consistency of the rolled pole piece is poor.
  • the inventor has designed a rolling device after in-depth research.
  • the rolling device adjusts the position of the heat exchange assembly in the axial direction of the roll by setting the adjustment assembly, so that the heat exchange assembly can adjust the rolling surface of the roll.
  • the temperature of different areas in the axial direction according to the principle of thermal expansion and cold contraction, makes the different areas of the rolling surface in the axial direction thermally expand or cool and contract, so that the size of the roll gap in the axial direction of the roll is consistent during rolling. To improve the thickness consistency of the target part.
  • the rolling device disclosed in the embodiments of the present application can be used for rolling target parts including but not limited to pole pieces, films, plastic parts and metal foils. Rolling can be accomplished by using the rolling device disclosed in the present application or a rolling system equipped with the rolling device disclosed in the present application, so as to improve the thickness consistency of the target part.
  • FIG. 1 is a schematic diagram of a rolling system provided by some embodiments of the present application.
  • FIG. 2 is a schematic structural diagram of a rolling device 10 provided by some embodiments of the present application.
  • the embodiment of the present application provides a rolling system, which includes a rolling device 10 , a measuring device 20 and a controller 30 .
  • the measuring device 20 is used to measure the thickness of the rolled target piece 500 .
  • the rolling device 10 includes a roll 100 , a heat exchange component 200 and a regulating component 300 .
  • the roller 100 has a rolling surface 110 for rolling the target piece 500 .
  • the heat exchange assembly 200 is arranged opposite to the rolling surface 110 , and the heat exchange assembly 200 is used to adjust the temperature of the rolling surface 110 .
  • the adjustment assembly 300 is connected to the heat exchange assembly 200 , and the adjustment assembly 300 is used to adjust the position of the heat exchange assembly 200 in the axial direction of the roll 100 .
  • the controller 30 is in communicative connection with the measuring device 20 and the regulating assembly 300 .
  • the controller 30 is configured to control the adjustment assembly 300 according to the measured value of the measuring device 20, and adjust the position of the heat exchange assembly 200 in the axial direction of the roll 100, so that the heat exchange assembly 200 adjusts the difference in the axial direction of the rolling surface 110 The temperature of the zone.
  • the rolling device 10 is a structure for rolling the target piece 500 so that the target piece 500 is rolled to a preset thickness.
  • the rolling device 10 adjusts the position of the heat exchange assembly 200 in the axial direction of the roll 100 by setting the adjustment assembly 300, so that the heat exchange assembly 200 can adjust the temperature of different regions of the rolling surface 110 of the roll 100 in the axial direction, according to The principle of thermal expansion and contraction makes the different areas of the rolling surface 110 in the axial direction thermally expand or cool and contract, so that the roll gap (located on both sides of the target piece 500 and used for
  • the gap formed between the two rolls 100 that are in contact with the target piece 500 can also be understood as the gap between the two rolls 100 that are used to roll the target piece 500) to have the same size, so as to improve the consistency of the thickness of the target piece 500. Power battery performance and consistency.
  • the measuring device 20 is a structure having a length measuring function.
  • the measuring device 20 is used to measure the thickness of the rolled target piece 500, and then determine the position where the roll gap is too large or too small. For example, when it is measured that the middle thickness of the rolled target part 500 is relatively large, it indicates that the middle region of the roll gap is relatively large, and heating is required to reduce the roll gap. When it is measured that the edge thickness of the rolled target piece 500 is small, it indicates that the edge area of the roll gap is small, and cooling is required to increase the roll gap.
  • the controller 30 is a processing unit with functions of information processing and program running, such as CPU (central processing unit, central processing unit) and PLC (Programmable Logic Controller, programmable logic controller).
  • the controller 30 can receive the measurement value of the measuring device 20 to control the action of the adjustment assembly 300, so that the adjustment assembly 300 adjusts the position of the heat exchange assembly 200 in the axial direction of the roll 100, so that the heat exchange assembly 200 and the rolling surface 110 are axially aligned. Different upward regions face each other, so as to change the temperature of different regions of the rolling surface 110 in the axial direction.
  • different areas of the rolling surface 110 in the axial direction are thermally expanded or cooled and contracted, so that the size of the roll gap in the axial direction of the roll 100 is consistent during rolling, so as to increase the thickness of the target part 500 Consistency, improve the performance and consistency of power batteries.
  • the controller 30 can directly adjust the position of the adjustment assembly 300 according to the first control record, so that the thickness of the rolled target piece 500 is uniform.
  • the controller 30 can record when to control the adjusting component 300 to adjust the position of the heat exchanging component 200, and it can be performed according to the records of the controller 30 during subsequent use. Control, so that the thickness of the pole piece after subsequent rolling is more consistent.
  • the rolling system further includes a temperature detection device 40, the temperature detection device 40 is in communication with the controller 30, and the temperature detection device 40 is used to detect the temperature of different regions of the rolling surface 110 in the axial direction .
  • the controller 30 is configured to control the adjustment assembly 300 according to the measurement value of the measurement device 20 and the detection value of the temperature detection device 40, and adjust the position of the heat exchange assembly 200 in the axial direction of the roll 100, so that the heat exchange assembly 200 adjusts the roll pressure.
  • the temperature of different regions of the surface 110 in the axial direction is configured to control the adjustment assembly 300 according to the measurement value of the measurement device 20 and the detection value of the temperature detection device 40, and adjust the position of the heat exchange assembly 200 in the axial direction of the roll 100, so that the heat exchange assembly 200 adjusts the roll pressure.
  • the temperature of different regions of the surface 110 in the axial direction is configured to control the adjustment assembly 300 according to the measurement value of the measurement device 20 and the detection value of the temperature detection device 40, and adjust the position of the heat exchange assembly 200 in the
  • the temperature detection device 40 has a temperature detection function.
  • the temperature detection device 40 may be a thermocouple thermometer, a bimetal thermometer, a temperature gun, etc., which is not limited in this embodiment of the present application.
  • the temperature detection device 40 is configured to detect the temperature of different regions of the rolling surface 110 in the axial direction, so as to provide a basis for whether the controller 30 controls the heat exchange assembly 200 to continue exchanging heat for the corresponding region.
  • the temperature detection device 40 By setting the temperature detection device 40, the temperature of different regions of the rolling surface 110 in the axial direction is detected, and the detected value is sent to the controller 30, so that the entire system forms a negative feedback adjustment, which is beneficial to control the temperature of the rolling surface 110.
  • the degrees of thermal expansion and contraction in different regions make the thickness consistency of the target part 500 better.
  • the rolling device 10 includes a roll 100 , a heat exchange component 200 and an adjustment component 300 .
  • the roller 100 has a rolling surface 110 for rolling the target piece 500 .
  • the heat exchange assembly 200 is arranged opposite to the rolling surface 110 , and the heat exchange assembly 200 is used to adjust the temperature of the rolling surface 110 .
  • the adjustment assembly 300 is connected to the heat exchange assembly 200 , and the adjustment assembly 300 is used to adjust the position of the heat exchange assembly 200 in the axial direction of the roll 100 .
  • the roll 100 is a part that continuously plastically deforms the target 500 .
  • the roller 100 is generally cylindrical, and its peripheral surface includes a rolling surface 110 for rolling the target piece 500 .
  • the heat exchange assembly 200 is a structure capable of exchanging heat with other components to change the temperature of the other components.
  • the heat exchange component 200 is used to exchange heat with the rolling surface 110 to change the temperature of the rolling surface 110, including heating the rolling surface 110 to increase the temperature of the rolling surface 110 , also includes cooling the rolling surface 110 to reduce the temperature of the rolling surface 110 .
  • the adjustment assembly 300 is a structure capable of driving other components to move.
  • the adjustment assembly 300 is used to drive the heat exchange assembly 200 to move relative to the roll 100 along the axial direction of the roll 100 , so as to change the position of the heat exchange assembly 200 in the axial direction of the roll 100 .
  • the rolling device 10 adjusts the position of the heat exchange assembly 200 in the axial direction of the roll 100 by setting the adjustment assembly 300, so that the heat exchange assembly 200 can adjust the temperature of different regions of the rolling surface 110 of the roll 100 in the axial direction, according to
  • the principle of thermal expansion and contraction makes the different areas of the rolling surface 110 in the axial direction thermally expand or cool and contract, so that the roll gap (located on both sides of the target piece 500 and used for
  • the gap formed between the two rolls 100 that are in contact with the target piece 500 can also be understood as the gap between the two rolls 100 that are used to roll the target piece 500) to have the same size, so as to improve the consistency of the thickness of the target piece 500. Power battery performance and consistency.
  • the number of rolls 100 in the rolling device 10 is not limited.
  • the number of rolls 100 is two.
  • the number of roll 100 may also be one, and in this case, the roll gap is the gap between the roll 100 and the workbench supporting the target piece 500 .
  • the number of rolls 100 can also be three or more.
  • one roll 100 cooperates with multiple rolls 100 to form multiple roll gaps, and the adjustment assembly 300 and heat exchange assembly 200 can be added correspondingly to the number of roll gaps to complete the adjustment of the consistency of the multiple roll gaps.
  • FIG. 3 is a schematic structural diagram of a rolling device 10 provided in another embodiment of the present application.
  • the heat exchange assembly 200 includes a heating element 210 disposed opposite to the rolling surface 110 , and the heating element 210 is connected to the adjustment assembly 300 .
  • the adjustment assembly 300 is used for adjusting the position of the heating element 210 in the axial direction.
  • the heating element 210 is a component used to heat other components to increase their temperature.
  • the heating element 210 is used to heat the rolling surface 110 to increase the temperature of the rolling surface 110 .
  • the heating element 210 may be a resistance heating element, an infrared heating element, or an electromagnetic induction heating element, etc., which is not limited in this embodiment of the present application.
  • the electromagnetic induction heating element has the advantages of high heating efficiency and good controllability, which is conducive to heating the concave area of the rolling surface 110 to make it expand, so that the size of the roll gap in the axial direction of the roll 100 unanimous.
  • the heating element 210 can heat the rolling surface 110, so that the local temperature of the rolling surface 110 rises and then expands, so that the larger roll gap is reduced to the same size as other roll gaps.
  • the adjustment assembly 300 can adjust the position of the heating element 210 in the axial direction, so that the heating element 210 can heat different regions of the rolling surface 110 in the axial direction, thereby realizing the adjustment of the size of the roll gap corresponding to multiple different regions,
  • the size of the roll gap in the axial direction tends to be consistent, so as to improve the thickness consistency of the rolled target part 500 and improve the performance and consistency of the power battery.
  • the heat exchange assembly 200 includes a plurality of heating elements 210 corresponding to a plurality of regions of the rolling surface 110 in the axial direction, and each heating element 210 is used for individually adjusting temperature of an area.
  • the temperature of multiple different areas of the rolling surface 110 in the axial direction can be adjusted at one time, meeting the temperature adjustment requirements of multiple different areas, and further improving the thickness consistency of the target part 500 .
  • the heat exchange assembly 200 includes a cooling element 220 disposed opposite to the rolling surface 110 , and the cooling element 220 is connected to the adjustment assembly 300 .
  • the adjusting assembly 300 is used for adjusting the axial position of the cooling element 220 .
  • the cooling member 220 is used to cool other components to reduce their temperature.
  • the cooling element 220 is used to cool the rolling surface 110 to reduce the temperature of the rolling surface 110 .
  • the cooling member 220 can cool the rolling surface 110, so that the local temperature of the rolling surface 110 decreases and shrinks, so that the smaller roll gap is enlarged to be consistent with other roll gaps.
  • the adjustment assembly 300 can adjust the position of the cooling element 220 in the axial direction, so that the cooling element 220 can cool different areas of the rolling surface 110 in the axial direction, thereby realizing the adjustment of the size of the roll gap corresponding to multiple different areas.
  • the size of the roll gap in the axial direction tends to be consistent, so as to improve the thickness consistency of the rolled target part 500 and improve the performance and consistency of the power battery.
  • FIG. 4 is a schematic structural diagram of a rolling device 10 provided in some other embodiments of the present application.
  • the heat exchange assembly 200 includes a plurality of cooling elements 220 corresponding to a plurality of regions of the rolling surface 110 in the axial direction, and each cooling element 220 is used to individually adjust a The temperature of the zone.
  • the temperature of multiple different areas of the rolling surface 110 in the axial direction can be adjusted at one time, meeting the temperature adjustment requirements of multiple different areas, and improving the thickness consistency of the target part 500 while improving the adjustment. efficiency.
  • the cooling element 220 is used to spray a cooling medium to the rolling surface 110 to adjust the temperature of the rolling surface 110 .
  • Cooling media include but are not limited to liquid nitrogen, liquid carbon dioxide or dry ice particles.
  • the temperature of the rolling surface 110 is adjusted by spraying the cooling medium.
  • the cooling efficiency is high;
  • the rolling surface 110 realizes the effect of cleaning the rolling surface 110, so that the rolling surface 110 is clean and free of debris, avoiding the existence of debris and reducing the size of the roll gap corresponding to the location of the debris, which is beneficial to the axial direction of the roll 100
  • the size of the roll gap on the top is consistent, which is conducive to improving the thickness consistency of the target part 500.
  • FIG. 5 is a schematic structural diagram of a cooling element 220 provided in some embodiments of the present application.
  • the cooling element 220 includes a spray head 221 having a nozzle 2211 having a flat mouth structure.
  • the nozzle 2211 may also be circular or square, which is not limited in this embodiment of the present application.
  • the cooling element 220 may also adjust the temperature of the rolling surface 110 by means of heat radiation.
  • the rolling device 10 further includes a dust removal mechanism 400 , and the dust removal mechanism 400 is disposed opposite to the rolling surface 110 .
  • the dust removal mechanism 400 is a mechanism for removing impurities near the rolling surface 110 .
  • the dust removal mechanism 400 may be a negative pressure dust removal mechanism or an electrostatic dust removal mechanism.
  • the dust removal mechanism 400 it is convenient to remove the impurities detached from the rolling surface 110 , so as to reduce the possibility of the impurities detached from the rolling surface 110 adhering to the rolling surface 110 again.
  • the dust removal mechanism 400 and the cooling element 220 are opened and closed at the same time.
  • the dust removal mechanism 400 can also be opened or closed with a delay as required.
  • the dust removal mechanism 400 and the cooling member 220 are disposed on the same side of the roll 100 .
  • the dust removal mechanism 400 and the cooling element 220 are arranged on the same side of the roll 100" can also be understood as the area of the rolling surface 110 facing the dust removal mechanism 400 and the area of the rolling surface 110 facing the cooling element 220 are the same area.
  • the dust removal mechanism 400 By arranging the dust removal mechanism 400 on the same side as the cooling element 220 , it is beneficial for the dust removal mechanism 400 to remove the impurities washed down by the cooling medium, thereby improving the dust removal effect of the dust removal mechanism 400 .
  • a cooling element 220 is correspondingly provided with a dust removal mechanism 400 , the dust removal mechanism 400 is connected to the upper side or the lower side of the cooling element 220 , and moves together with the cooling element 220 under the action of the adjustment assembly 300 .
  • one cooling element 220 is correspondingly provided with two dust removal mechanisms 400 , and the two dust removal mechanisms 400 are respectively connected to the upper side and the lower side of the cooling element 220 , and at the same time, under the action of the adjustment assembly 300 Move together with the cooling element 220 .
  • the dust removal mechanism 400 is disposed on the cooling element 220 to remove impurities washed by the cooling medium around the cooling element 220 , which has a better dust removal effect.
  • the adjustment assembly 300 includes a guide member and a drive member, the guide member extends along the axial direction of the roll 100, and the heat exchange assembly 200 is movably connected to the guide member.
  • the driving part is drivingly connected with the heat exchanging assembly 200, and the driving part is used to drive the heat exchanging assembly 200 to move along the guide.
  • a guide is a component that acts as a guide.
  • the guide can be a guide rod.
  • the guide member may be a guide rail.
  • a driver is a structure used to provide a power source and drive other components, including but not limited to cylinders, electric cylinders, hydraulic cylinders, motors, etc.
  • the driving member is used to drive the heat exchange assembly 200 to move along the guide member, so as to adjust the position of the heat exchange assembly 200 in the axial direction of the roll 100 .
  • the guide member can play a guiding role, restricting the movement of the heat exchange assembly 200 in a direction deviating from the axial direction of the roll 100, so that the heat exchange assembly 200 can move along the axial direction, so as to ensure that the heat exchange assembly 200 is axially upward to the rolling surface 110 different regions for heat exchange.
  • By setting the driving member it is convenient to drive the heat exchange assembly 200 to move along the guide member, thereby adjusting the position of the heat exchange assembly 200 in the axial direction of the roll 100 .
  • FIG. 6 is a schematic structural diagram of a heating element 210 provided in some embodiments of the present application.
  • the heat exchange component 200 has a heat exchange surface 211 , and the heat exchange surface 211 is opposite to the rolling surface 110 .
  • the heat exchange surface 211 is an arc surface, and the heat exchange surface 211 is arranged coaxially with the roll 100 .
  • the heat exchange surface 211 is the surface where the heat exchange component 200 mainly radiates heat.
  • the arc surface refers to a surface whose cross section is arc-shaped.
  • the heat exchange surface 211 is set as an arc surface to match the rolling surface 110 .
  • the heat exchange surface 211 is arranged coaxially with the roll 100. On the one hand, it can avoid contact between the heat exchange surface 211 and the rolling surface 110. On the other hand, the relative area between the heat exchange surface 211 and the rolling surface 110 is large, and the If the distances are equal, the heat exchange surface 211 can better exchange heat with the rolling surface 110, preventing uneven heating of the rolling surface 110 from affecting the adjustment effect of the roll gap.
  • the distance between the heat exchange surface 211 and the rolling surface 110 is 5mm ⁇ 15mm.
  • the heating heat is too large and difficult to control.
  • the distance between the heat exchange surface 211 and the rolling surface 110 is greater than 15 mm, the heating heat is too small, the heating efficiency is low, and the heating time is too long.
  • the heating element 210 and the cooling element 220 can work at the same time.
  • the adjustment assembly 300 can adjust the heating element 210 to the middle. zone to heat the middle zone.
  • the adjustment assembly 300 can also adjust the cooling member 220 to the edge area to cool the edge area, so that the size of the roll gap in the axial direction of the roll 100 is consistent, so as to improve the thickness consistency of the target piece 500 .
  • FIG. 2 to FIG. 4 please refer to FIG. 2 to FIG. 4 .
  • the rolling device 10 includes a roll 100 , a heat exchange component 200 and an adjustment component 300 , and the roll 100 has a rolling surface 110 for rolling a target piece 500 .
  • the heat exchange assembly 200 is arranged opposite to the rolling surface 110 , and the heat exchange assembly 200 is used to adjust the temperature of the rolling surface 110 .
  • the adjustment assembly 300 is connected to the heat exchange assembly 200 , and the adjustment assembly 300 is used to adjust the position of the heat exchange assembly 200 in the axial direction of the roll 100 .
  • the heat exchange assembly 200 includes a heating element 210 disposed opposite to the rolling surface 110 .
  • the heating element 210 is connected with an adjustment assembly 300 , and the adjustment assembly 300 is used to adjust the position of the heating element 210 in the axial direction.
  • the heat exchange assembly 200 includes a cooling element 220 disposed opposite to the rolling surface 110 .
  • the cooling element 220 is connected with the adjustment assembly 300 , and the adjustment assembly 300 is used to adjust the position of the cooling element 220 in the axial direction.
  • the cooling element 220 is used for spraying cooling medium to the rolling surface 110 to adjust the temperature of the rolling surface 110 .
  • the rolling device 10 can heat the rolling surface 110 through the heating element 210, so that the local temperature of the rolling surface 110 rises and then expands, so that the larger roll gap is reduced to the same size as other roll gaps.
  • the adjustment assembly 300 can adjust the position of the heating element 210 in the axial direction, so that the heating element 210 can heat different regions of the rolling surface 110 in the axial direction, thereby realizing the adjustment of the size of the roll gap corresponding to multiple different regions, The size of the roll gap in the axial direction tends to be consistent, so as to improve the thickness consistency of the rolled target piece 500 .
  • the cooling member 220 can cool the rolling surface 110, so that the local temperature of the rolling surface 110 decreases and shrinks, so that the smaller roll gap is enlarged to be consistent with other roll gaps.
  • the adjustment assembly 300 can adjust the position of the cooling element 220 in the axial direction, so that the cooling element 220 can cool different areas of the rolling surface 110 in the axial direction, thereby realizing the adjustment of the size of the roll gap corresponding to a plurality of different areas, The size of the roll gap in the axial direction tends to be consistent, so as to improve the thickness consistency of the rolled target piece 500 .
  • the temperature of the rolling surface 110 is adjusted by spraying the cooling medium.
  • the cooling efficiency is high;
  • the rolling surface 110 realizes the effect of cleaning the rolling surface 110, so that the rolling surface 110 is clean and free of debris, avoiding the existence of debris and reducing the size of the roll gap corresponding to the location of the debris, which is beneficial to the axial direction of the roll 100
  • the size of the roll gap on the top is consistent, which is conducive to improving the thickness consistency of the target part 500.

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Abstract

一种辊压装置（10），包括轧辊（100）、换热组件（200）及调节组件（300），轧辊具有用于辊压目标件的辊压面（110），换热组件与辊压面相对设置，换热组件用于调节辊压面的温度，调节组件连接换热组件，用于调节换热组件在轧辊的轴向上的位置，以调节轧辊的辊压面在轴向上的不同区域的温度；一种辊压系统，包括辊压装置、测量装置（20）和控制器（30），测量装置用于测量辊压后的目标件（500）的厚度，控制器与测量装置和调节组件通信连接；根据热胀冷缩原理，使得辊压面在轴向上的不同区域受热膨胀或冷却收缩，使得辊压时在轧辊的轴向上的辊缝大小一致，以提高目标件的厚度一致性。

Description

辊压装置及辊压系统
相关申请的交叉引用
本申请要求享有2021年11月25日提交的名称为“辊压装置及辊压系统”的中国专利申请(申请号：2021229265523)的优先权，该申请的全部内容通过引用并入本文中。
技术领域
本申请涉及辊压制造领域，具体而言，涉及一种辊压装置及辊压系统。
背景技术
动力电池在新能源领域应用甚广，例如电动汽车、新能源汽车等，新能源汽车、电动汽车已经成为汽车产业的发展新趋势。在动力电池的生产过程中，需要对极片进行辊压。目前，辊压的极片的厚度一致性较差，导致动力电池的性能和一致性较差。
发明内容
本申请实施例的目的在于提供一种辊压装置及辊压系统，其旨在改善相关技术中辊压的极片的厚度一致性较差的问题。
第一方面，本申请实施例提供了一种辊压装置，所述辊压装置包括轧辊、换热组件及调节组件，所述轧辊具有用于辊压目标件的辊压面；所述换热组件与所述辊压面相对设置，所述换热组件用于调节所述辊压面的温度；所述调节组件连接所述换热组件，所述调节组件用于调节所述换热组件在所述轧辊的轴向上的位置。
在上述技术方案中，该辊压装置通过设置调节组件调节换热组件在轧辊的轴向上的位置，以使换热组件调节轧辊的辊压面在轴向上的不同区域的温度，根据热胀冷缩的原理，使得辊压面在轴向上的不同区域受热膨胀或冷却收缩，使得辊压时在轧辊的轴向上的辊缝(位于目标件两侧的且用于与目标件接触的两个轧辊之间形成的缝隙，也可以理解为配合辊压目标件的两个轧辊之间的间隙)大小一致，以提升目标件的厚度一致性，提升动力电池的性能和一致性。
作为本申请实施例的一种可选技术方案，所述换热组件包括加热件，所述加热件与所述辊压面相对设置，所述加热件与所述调节组件连接，所述调节组件用于调节所述加热件在所述轴向上的位置。
在上述技术方案中，加热件能够对辊压面进行加热，使得辊压面的局部温度升高进而发生膨胀，从而使偏大的辊缝缩小至与其他辊缝大小一致。调节组件能够调节加热件在轴向上的位置，以使加热件对辊压面在轴向上的不同区域进行加热，进而实现对多个不同区域对应的辊缝大小的调节，使得在轴向上辊缝的大小趋于一致，以提升辊压后的目标件的厚度一致性，提升动力电池的性能和一致性。
作为本申请实施例的一种可选技术方案，所述换热组件包括冷却件，所述冷却件与所述辊压面相对设置，所述冷却件与所述调节组件连接，所述调节组件用于调节所述冷却件在所述轴向上的位置。
在上述技术方案中，冷却件能够对辊压面进行冷却，使得辊压面的局部温度降低进而发生收缩，从而使偏小的辊缝增大至与其他辊缝大小一致。调节组件能够调节冷却件在轴向上的位置，以使冷却件对辊压面在轴向上的不同区域进行冷却，进而实现对多个不同区域对应的辊缝大小的调节，使得在轴向上辊缝的大小趋于一致，以提升辊压后的目标件的厚度一致性，提升动力电池的性能和一致性。
作为本申请实施例的一种可选技术方案，所述换热组件包括多个冷却件，所述多个冷却件与所述辊压面沿所述轴向上的多个区域相对应，每个所述冷却件用于单独调节一个区域的温度。
在上述技术方案中，通过设置多个冷却件，可以一次性调节辊压面在轴向上的多个不同区域的温度，满足多个不同区域的温度调节需求，进一步提升目标件的厚度一致性，提升动力电池的性能和一致性。
作为本申请实施例的一种可选技术方案，所述冷却件用于向所述辊压面喷射冷却介质以调节所述辊压面的温度。
在上述技术方案中，通过喷射冷却介质的方式对辊压面的温度进行调节，一方面冷却的效率较高，另一方面，冷却介质可以对辊压面进行冲刷，使得粘附于辊压面的杂质脱离辊压面，实现对辊压面清洁的效果，使得辊压面清洁无杂物，避免了杂物的存在减小杂物所在位置对应的辊缝大小，有利于轧辊的轴向上的辊缝大小一致，有利于提升目标件的厚度一致性。
作为本申请实施例的一种可选技术方案，所述辊压装置还包括除尘机构，所述除尘机构与所述辊压面相对设置。
在上述技术方案中，通过设置除尘机构，便于清除从辊压面脱离的杂质，以降低从辊压面脱离的杂质再次粘附于辊压面的可能。
作为本申请实施例的一种可选技术方案，所述除尘机构与所述冷却件设置在所述轧辊的同一侧。
在上述技术方案中，通过将除尘机构与冷却件同侧设置，有利于除尘机构将冷却介质冲刷下来的杂质清除，提升除尘机构的除尘效果。
作为本申请实施例的一种可选技术方案，所述调节组件包括导向件和驱动件，所述导向件沿着所述轧辊的轴向延伸，所述换热组件可移动地连接于所述导向件，所述驱动件与所述换热组件驱动连接，所述驱动件用于驱动所述换热组件沿所述导向件移动。
在上述技术方案中，导向件能够起到导向作用，限制换热组件向偏离轧辊的轴向的方向移动，使得换热组件能够沿着轴向移动，以保证换热组件对辊压面轴向上的不同区域进行换热。通过设置驱动件，便于驱动换热组件沿导向件移动，从而调节换热组件在轧辊的轴向上的位置。
作为本申请实施例的一种可选技术方案，所述换热组件具有换热面，所述换热面与所述辊压面相对，所述换热面为圆弧面，所述换热面与所述轧辊同轴设置。
在上述技术方案中，由于辊压面为圆周面，因此将换热面设置为圆弧面，以与辊压面相匹配。另外，换热面与轧辊同轴设置，一方面能够避免换热面与辊压面接触，另一方面，换热面与辊压面的相对面积大，并且各处的距离相等，换热面能够更好地对辊压面进行换热，防止辊压面的受热不均而影响辊缝的调节效果。
第二方面，本申请实施例还提供了一种辊压系统，所述辊压系统包括上述的辊压装置、测量装置及控制器，所述测量装置用于测量辊压后的所述目标件的厚度；所述控制器与所述测量装置和所述调节组件通信连接，所述控制器被配置为根据所述测量装置的测量值控制所述调节组件，调节所述换热组件在所述轧辊的轴向上的位置，以使所述换热组件调节所述辊压面在所述轴向上的不同区域的温度。
作为本申请实施例的一种可选技术方案，所述辊压系统还包括温度检测装置，所述温度检测装置与所述控制器通信连接，所述温度检测装置用于检测所述辊压面在所述轴向上的不同区域的温度；所述控制器被配置为根据所述测量装置的测量值和所述温度检测装置的检测值控制所述调节组件，调节所述换热组件在所述轧辊的轴向上的位置，以使所述换热组件调节所述辊压面在所述轴向上的不同区域的温度。
在上述技术方案中，通过设置温度检测装置，对辊压面在轴向上的不同区域的温度进行检测，并将检测值发送给控制器，使得整个系统形成负反馈调节，有利于控制辊压面的不同区域的热胀冷缩程度，使得目标件的厚度一致性更好。
附图说明
为了更清楚地说明本申请实施例的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，应当理解，以下附图仅示出了本申请的某些实施例，因此不应被看作是对范围的限定，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他相关的附图。
图1为本申请一些实施例提供的辊压系统的示意图；
图2为本申请一些实施例提供的辊压装置的结构示意图；
图3为本申请另一些实施例提供的辊压装置的结构示意图；
图4为本申请又一些实施例提供的辊压装置的结构示意图；
图5为本申请一些实施例提供的冷却件的结构示意图；
图6为本申请一些实施例提供的加热件的结构示意图。
图标：10-辊压装置；20-测量装置；30-控制器；40-温度检测装置；100-轧辊；110-辊压面；200-换热组件；210-加热件；211-换热面；220-冷却件；221-喷头；2211-喷嘴；300-调节组件；400-除尘机构；500-目标件。
具体实施方式
下面将结合附图对本申请技术方案的实施例进行详细的描述。以下实施例仅用于更加清楚地说明本申请的技术方案，因此只作为示例，而不能以此来限制本申请的保护范围。
除非另有定义，本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同；本文中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本申请；本申请的说明书和权利要求书及上述附图说明中的术语“包括”和“具有”以及它们的任何变形，意图在于覆盖不排他的包含。
在本申请实施例的描述中，技术术语“第一”“第二”等仅用于区别不同对象，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量、特定顺序或主次关系。在本申请实施例的描述中，“多个”的含义是两个以上，除非另有明确具体的限定。
在本文中提及“实施例”意味着，结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其它实施例互斥的独立的或备选的实施例。本领域技术人员显式地和隐式地理解的是，本文所描述的实施例可以与其它实施例相结合。
在本申请实施例的描述中，术语“和/或”仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
在本申请实施例的描述中，术语“多个”指的是两个以上(包括两个)，同理，“多组”指的是两组以上(包括两组)，“多片”指的是两片以上(包括两片)。
在本申请实施例的描述中，技术术语“中心”“纵向”“横向”“长度”“宽度”“厚度”“上”“下”“前”“后”“左”“右”“竖直”“水平”“顶”“底”“内”“外”“顺时针”“逆时针”“轴向”“径向”“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请实施例和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请实施例的限制。
在本申请实施例的描述中，除非另有明确的规定和限定，技术术语“安装”“相连”“连接”“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；也可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请实施例中的具体含义。
目前，从市场形势的发展来看，动力电池的应用越加广泛。动力电池不仅被应用于水力、火力、风力和太阳能电站等储能电源系统，而且还被广泛应用于电动自行车、电动摩托车、电动汽车等电动交通工具，以及军事装备和航空航天等多个领域。随着动力电池应用领域的不断扩大，其市场的需求量也在不断地扩增。
在动力电池的生产过程中，需要对极片进行辊压。目前，辊压的极片的厚度一致性较差，导致动力电池的性能和一致性较差。
发明人经研究发现，现有技术中轧辊的制造精度存在误差，使得辊压时在轧辊的轴向上辊缝(位于目标件两侧的且用于与目标件接触的两个轧辊之间形成的缝隙，也可以理解为配合辊压目标件的两个轧辊之间的间隙)的大小不一致，某一段的辊缝较大，而另一段的辊缝较小。这样，在轧辊的轴向上，辊压出的极片的厚度也会存在相应变化，也即辊缝大的部分，对应的极片的厚度较大，辊缝小的部分，对应的极片的厚度较小。从而导致辊压的极片的厚度一致性较差。
基于以上考虑，发明人经过深入研究设计了一种辊压装置，该辊压装置通过设置调节组件调节换热组件在轧辊的轴向上的位置，以使换热组件调节轧辊的辊压面在轴向上的不同区域的温度，根据热胀冷缩的原理，使得辊压面在轴向上的不同区域受热膨胀或冷却收缩，使得辊压时在轧辊的轴向上的辊缝大小一致，以提升目标件的厚度一致性。
本申请实施例公开的辊压装置可以用于包括但不限极片、薄膜、塑件和金属箔等目标件的辊压。可以使用本申请公开的辊压装置或具备本申请公开的辊压装置的辊压系统完成辊压，以提升目标件的厚度一致性。
请参照图1和图2，图1为本申请一些实施例提供的辊压系统的示意图。图2为本申请一些实施例提供的辊压装置10的结构示意图。本申请实施例提供了一种辊压系统，辊压系统包括辊压装置10、测量装置20及控制器30。测量装置20用于测量辊压后的目标件500的厚度。辊压装置10包括轧辊100、换热组件200及调节组件300。轧辊100具有用于辊压目标件500的辊压面110。换热组件200与辊压面110相对设置，换热组件200用于调节辊压面110的温度。调节组件300连接换热组件200，调节组件300用于调节换热组件200在轧辊100的轴向上的位置。控制器30与测量装置20和调节组件300通信连接。控制器30被配置为根据测量装置20的测量值控制调节组件300，调节换热组件200在轧辊100的轴向上的位置，以使换热组件200调节辊压面110在轴向上的不同区域的温度。
辊压装置10是用于对目标件500进行辊压，以使目标件500被辊压至预设厚度的结构。该辊压装置10通过设置调节组件300调节换热组件200在轧辊100的轴向上的位置，以使换热组件200调节轧辊100的辊压面110在轴向上的不同区域的温度，根据热胀冷缩的原理，使得辊压面110在轴向上的不同区域受热膨胀或冷却收缩，使得辊压时在轧辊100的轴向上的辊缝(位于目标件500两侧的且用于与目标件500接触的两个轧辊100之间形成的缝隙，也可以理解为配合辊压目标件500的两个轧辊100之间的间隙)大小一致，以提升目标件500的厚度一致性，提升动力电池的性能和一致性。
测量装置20是具有长度测量功能的结构。测量装置20用于对辊压后的目标件500的厚度进行测量，进而确定辊缝偏大或偏小的位置。例如，当测得辊压后的目标件500的中部厚度较大时，则表明辊缝的中部区域较大，需要加热来减小辊缝。当测得辊压后的目标件500的边缘厚度较小时，则表明辊缝的边缘区域较小，需要冷却来增大辊缝。
控制器30是具有信息处理、程序运行功能的处理单元，例如CPU(central processing unit，中央处理器)和PLC(Programmable Logic Controller，可编程逻辑控制器)。控制器30能够接收测量装置20的测量值来控制调节组件300动作，使得调节组件300调节换热组件200在轧辊100的轴向上的位置，以使换热组件200与辊压面110在轴向上的不同区域相对，以改变辊压面110在轴向上的不同区域的温度。根据热胀冷缩的原理，使得辊压面110在轴向上的不同区域受热膨胀或冷却收缩，使得辊压时在轧辊100的轴向上的辊缝大小一致，以提升目标件500的厚度一致性，提升动力电池的性能和一致性。
在辊压系统初次使用时，通过测量装置20的测量和控制器30的控制，即可明确轧辊 100在某一时刻时调节组件300应该如何调节换热组件200的位置。进而使得在后续使用过程中，控制器30可以依照第一次的控制记录直接调节调节组件300的位置，使得辊压出的目标件500厚度均匀。简而言之，可以通过对辊压系统的初步调试，使得控制器30记录好何时控制调节组件300将换热组件200调节至何位置，后续使用过程中即可根据控制器30的记录进行控制，使得后续辊压的极片厚度一致性较好。
在本申请的一些实施例中，辊压系统还包括温度检测装置40，温度检测装置40与控制器30通信连接，温度检测装置40用于检测辊压面110在轴向上的不同区域的温度。控制器30被配置为根据测量装置20的测量值和温度检测装置40的检测值控制调节组件300，调节换热组件200在轧辊100的轴向上的位置，以使换热组件200调节辊压面110在轴向上的不同区域的温度。
温度检测装置40是具有温度检测功能的结构。温度检测装置40可以为热电偶温度计、双金属温度计和温度枪等，本申请实施例对此不作限定。温度检测装置40被配置为检测辊压面110在轴向上的不同区域的温度，以为控制器30是否控制换热组件200继续为对应的区域换热提供依据。
通过设置温度检测装置40，对辊压面110在轴向上的不同区域的温度进行检测，并将检测值发送给控制器30，使得整个系统形成负反馈调节，有利于控制辊压面110的不同区域的热胀冷缩程度，使得目标件500的厚度一致性更好。
请参照图2，本申请的一些实施例提供了一种辊压装置10，辊压装置10包括轧辊100、换热组件200及调节组件300。轧辊100具有用于辊压目标件500的辊压面110。换热组件200与辊压面110相对设置，换热组件200用于调节辊压面110的温度。调节组件300连接换热组件200，调节组件300用于调节换热组件200在轧辊100的轴向上的位置。
轧辊100是使目标件500产生连续塑性变形的部件。轧辊100一般呈圆柱状，其圆周面包括用于滚压目标件500的辊压面110。
换热组件200是能够与其他部件进行热交换，以使其他部件的温度发生变化的结构。在本申请实施例中，换热组件200用于与辊压面110进行热交换，以改变辊压面110的温度，既包括对辊压面110进行加热，以使辊压面110温度升高，也包括对辊压面110进行冷却，以使辊压面110温度降低。
调节组件300是能够驱动其他部件运动的结构。在本申请实施例中，调节组件300用于驱动换热组件200相对于轧辊100沿轧辊100的轴向移动，以改变换热组件200在轧辊100的轴向上的位置。
该辊压装置10通过设置调节组件300调节换热组件200在轧辊100的轴向上的位置，以使换热组件200调节轧辊100的辊压面110在轴向上的不同区域的温度，根据热胀冷缩的原理，使得辊压面110在轴向上的不同区域受热膨胀或冷却收缩，使得辊压时在轧辊100的轴向上的辊缝(位于目标件500两侧的且用于与目标件500接触的两个轧辊100之间形成的缝隙，也可以理解为配合辊压目标件500的两个轧辊100之间的间隙)大小一致，以提升目标件500的厚度一致性，提升动力电池的性能和一致性。
辊压装置10的轧辊100的个数不作限定，例如，请参照图2，轧辊100的个数为两个。在本申请的一些实施例中，轧辊100的个数也可以为一个，此时，辊缝为轧辊100与支撑目标件500的工作台之间的间隙。当然，轧辊100的个数也可以为三个或三个以上。此时，一个轧辊100分别与多个轧辊100配合形成多个辊缝，可以针对辊缝的个数相应增加调节组件300和换热组件200，以完成对多个辊缝的一致性的调节。
请参照图3，图3为本申请另一些实施例提供的辊压装置10的结构示意图。在本申请另一些实施例中，换热组件200包括加热件210，加热件210与辊压面110相对设置，加热件210与调节组件300连接。调节组件300用于调节加热件210在轴向上的位置。
加热件210是用于对其他部件进行加热，以提升其温度的部件。在本申请实施例中，加热件210用于对辊压面110进行加热，以提升辊压面110的温度。加热件210可以是电阻加热 件、红外加热件或电磁感应加热件等，本申请实施例对此不作限定。其中，电磁感应加热件具有加热效率高，且可控性好的优点，有利于对辊压面110的凹形区域进行加热，使其膨胀，从而使在轧辊100的轴向上的辊缝大小一致。
加热件210能够对辊压面110进行加热，使得辊压面110的局部温度升高进而发生膨胀，从而使偏大的辊缝缩小至与其他辊缝大小一致。调节组件300能够调节加热件210在轴向上的位置，以使加热件210对辊压面110在轴向上的不同区域进行加热，进而实现对多个不同区域对应的辊缝大小的调节，使得在轴向上辊缝的大小趋于一致，以提升辊压后的目标件500的厚度一致性，提升动力电池的性能和一致性。
在本申请的一些实施例中，换热组件200包括多个加热件210，多个加热件210与辊压面110沿轴向上的多个区域相对应，每个加热件210用于单独调节一个区域的温度。
“每个加热件210用于单独调节一个区域的温度”是指每个加热件210能够独立工作，当加热件210工作时能够对该加热件210所对的辊压面110的区域进行加热。
通过设置多个加热件210，可以一次性调节辊压面110在轴向上的多个不同区域的温度，满足多个不同区域的温度调节需求，进一步提升目标件500的厚度一致性。
在本申请的一些实施例中，换热组件200包括冷却件220，冷却件220与辊压面110相对设置，冷却件220与调节组件300连接。调节组件300用于调节冷却件220在轴向上的位置。
冷却件220是用于对其他部件进行冷却，以降低其温度的部件。在本申请实施例中，冷却件220用于对辊压面110进行冷却，以降低辊压面110的温度。
冷却件220能够对辊压面110进行冷却，使得辊压面110的局部温度降低进而发生收缩，从而使偏小的辊缝增大至与其他辊缝大小一致。调节组件300能够调节冷却件220在轴向上的位置，以使冷却件220对辊压面110在轴向上的不同区域进行冷却，进而实现对多个不同区域对应的辊缝大小的调节，使得在轴向上辊缝的大小趋于一致，以提升辊压后的目标件500的厚度一致性，提升动力电池的性能和一致性。
请参照图4，图4为本申请又一些实施例提供的辊压装置10的结构示意图。本申请又一些实施例中，换热组件200包括多个冷却件220，多个冷却件220与辊压面110沿轴向上的多个区域相对应，每个冷却件220用于单独调节一个区域的温度。
“每个冷却件220用于单独调节一个区域的温度”是指每个冷却件220能够独立工作，当冷却件220工作时能够对该冷却件220所对的辊压面110的区域进行冷却。
通过设置多个冷却件220，可以一次性调节辊压面110在轴向上的多个不同区域的温度，满足多个不同区域的温度调节需求，提升目标件500的厚度一致性的同时提高调节效率。
在本申请的一些实施例中，冷却件220用于向辊压面110喷射冷却介质以调节辊压面110的温度。
冷却介质包括但不限于液氮、液态二氧化碳或干冰颗粒等。
通过喷射冷却介质的方式对辊压面110的温度进行调节，一方面冷却的效率较高，另一方面，冷却介质可以对辊压面110进行冲刷，使得粘附于辊压面110的杂质脱离辊压面110，实现对辊压面110清洁的效果，使得辊压面110清洁无杂物，避免了杂物的存在减小杂物所在位置对应的辊缝大小，有利于轧辊100的轴向上的辊缝大小一致，有利于提升目标件500的厚度一致性。
请参照图4和图5，图5为本申请一些实施例提供的冷却件220的结构示意图。在本申请的一些实施例中，冷却件220包括喷头221，喷头221具有喷嘴2211，喷嘴2211为扁口结构。通过将喷嘴2211设置为扁口结构，能够实现集中喷射，以将冷却介质集中于冷却件220所对的区域，提升冷却效果。当然，喷嘴2211也可以是圆形或方形，本申请实施例对此不作限定。
在本申请的另一些实施例中，冷却件220也可以采用热辐射的方式调节辊压面110的温度。
在本申请的一些实施例中，辊压装置10还包括除尘机构400，除尘机构400与辊压面110相对设置。
除尘机构400是用于清除辊压面110附近的杂质的机构。除尘机构400可以为负压除尘机构，也可以为静电除尘机构。
通过设置除尘机构400，便于清除从辊压面110脱离的杂质，以降低从辊压面110脱离的杂质再次粘附于辊压面110的可能。
工作时，除尘机构400和冷却件220同时开启，同时关闭。当然，也可以根据需要，将除尘机构400延时开启或延时关闭。
在本申请的一些实施例中，除尘机构400与冷却件220设置在轧辊100的同一侧。
“除尘机构400与冷却件220设置在轧辊100的同一侧”也可以理解为除尘机构400所对的辊压面110的区域与冷却件220所对的辊压面110的区域为同一区域。
通过将除尘机构400与冷却件220同侧设置，有利于除尘机构400将冷却介质冲刷下来的杂质清除，提升除尘机构400的除尘效果。
在本申请的一些实施例中，一个冷却件220对应设置有一个除尘机构400，除尘机构400连接于冷却件220的上侧或下侧，在调节组件300的作用下随冷却件220一同移动。在本申请的另一些实施例中，一个冷却件220对应设置有两个除尘机构400，两个除尘机构400分别连接于冷却件220的上侧和下侧，并同时在调节组件300的作用下随冷却件220一同移动。
在本申请的又一些实施例中，除尘机构400罩设于冷却件220，以在冷却件220的四周将冷却介质冲刷下来的杂质清除，具有较好的除尘效果。
在本申请的一些实施例中，调节组件300包括导向件和驱动件，导向件沿着轧辊100的轴向延伸，换热组件200可移动地连接于导向件。驱动件与换热组件200驱动连接，驱动件用于驱动换热组件200沿导向件移动。
导向件是具有导向作用的部件。例如，导向件可以是导杆。又例如，导向件可以为导轨。
驱动件是用于提供动力源，并带动其他部件活动的结构，包括但不限于气缸、电缸、液压缸、电机等。在本申请实施例中，驱动件用于驱动换热组件200沿着导向件移动，以调节换热组件200在轧辊100的轴向上的位置。
导向件能够起到导向作用，限制换热组件200向偏离轧辊100的轴向的方向移动，使得换热组件200能够沿着轴向移动，以保证换热组件200对辊压面110轴向上的不同区域进行换热。通过设置驱动件，便于驱动换热组件200沿导向件移动，从而调节换热组件200在轧辊100的轴向上的位置。
请参照图6，图6为本申请一些实施例提供的加热件210的结构示意图。在本申请的一些实施例中，换热组件200具有换热面211，换热面211与辊压面110相对。换热面211为圆弧面，换热面211与轧辊100同轴设置。
换热面211是换热组件200主要辐射热量的表面。圆弧面是指横截面呈圆弧状的表面。
由于辊压面110为圆周面，因此将换热面211设置为圆弧面，以与辊压面110相匹配。另外，换热面211与轧辊100同轴设置，一方面能够避免换热面211与辊压面110接触，另一方面，换热面211与辊压面110的相对面积大，并且各处的距离相等，换热面211能够更好地对辊压面110进行换热，防止辊压面110的受热不均而影响辊缝的调节效果。
可选地，换热面211与辊压面110之间的距离为5mm～15mm。当换热面211与辊压面110之间的距离小于5mm时，加热热量过大不易控制。而当换热面211与辊压面110之间的距离大于15mm时，加热热量过小，加热效率低，加热时间过长。
需要说明的是，加热件210和冷却件220可以同时工作，例如，辊压面110的中部区域需要加热，而辊压面110的边缘区域需要冷却，则调节组件300可以调节加热件210至中部区域，以对中部区域进行加热。同时，调节组件300还可以调节冷却件220至边缘区域，以对边缘区域进行冷却，从而使在轧辊100的轴向上的辊缝大小一致，以提升目标件500的厚度一致性。
根据本申请的一些实施例，请参照图2～图4。
辊压装置10包括轧辊100、换热组件200及调节组件300，轧辊100具有用于辊压目标件500的辊压面110。换热组件200与辊压面110相对设置，换热组件200用于调节辊压面110的温度。调节组件300连接换热组件200，调节组件300用于调节换热组件200在轧辊100的轴向上的位置。换热组件200包括加热件210，加热件210与辊压面110相对设置。加热件210与调节组件300连接，调节组件300用于调节加热件210在轴向上的位置。换热组件200包括冷却件220，冷却件220与辊压面110相对设置。冷却件220与调节组件300连接，调节组件300用于调节冷却件220在轴向上的位置。冷却件220用于向辊压面110喷射冷却介质以调节辊压面110的温度。
该辊压装置10通过加热件210能够对辊压面110进行加热，使得辊压面110的局部温度升高进而发生膨胀，从而使偏大的辊缝缩小至与其他辊缝大小一致。调节组件300能够调节加热件210在轴向上的位置，以使加热件210对辊压面110在轴向上的不同区域进行加热，进而实现对多个不同区域对应的辊缝大小的调节，使得在轴向上辊缝的大小趋于一致，以提升辊压后的目标件500的厚度一致性。冷却件220能够对辊压面110进行冷却，使得辊压面110的局部温度降低进而发生收缩，从而使偏小的辊缝增大至与其他辊缝大小一致。调节组件300能够调节冷却件220在轴向上的位置，以使冷却件220对辊压面110在轴向上的不同区域进行冷却，进而实现对多个不同区域对应的辊缝大小的调节，使得在轴向上辊缝的大小趋于一致，以提升辊压后的目标件500的厚度一致性。通过喷射冷却介质的方式对辊压面110的温度进行调节，一方面冷却的效率较高，另一方面，冷却介质可以对辊压面110进行冲刷，使得粘附于辊压面110的杂质脱离辊压面110，实现对辊压面110清洁的效果，使得辊压面110清洁无杂物，避免了杂物的存在减小杂物所在位置对应的辊缝大小，有利于轧辊100的轴向上的辊缝大小一致，有利于提升目标件500的厚度一致性。
需要说明的是，本申请给出的多个实施例中，只要不存在矛盾冲突，都可以互相组合。
最后应说明的是：以上各实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述各实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的范围，其均应涵盖在本申请的权利要求和说明书的范围当中。尤其是，只要不存在结构冲突，各个实施例中所提到的各项技术特征均可以任意方式组合起来。本申请并不局限于文中公开的特定实施例，而是包括落入权利要求的范围内的所有技术方案。

Claims (11)

  1. 一种辊压装置，其中，包括：
    轧辊，具有用于辊压目标件的辊压面；
    换热组件，与所述辊压面相对设置，所述换热组件用于调节所述辊压面的温度；
    调节组件，连接所述换热组件，所述调节组件用于调节所述换热组件在所述轧辊的轴向上的位置。
  2. 根据权利要求1所述辊压装置，其中，所述换热组件包括：
    加热件，与所述辊压面相对设置，所述加热件与所述调节组件连接，所述调节组件用于调节所述加热件在所述轴向上的位置。
  3. 根据权利要求1或2所述辊压装置，其中，所述换热组件包括：
    冷却件，与所述辊压面相对设置，所述冷却件与所述调节组件连接，所述调节组件用于调节所述冷却件在所述轴向上的位置。
  4. 根据权利要求3所述辊压装置，其中，所述换热组件包括：
    多个冷却件，与所述辊压面沿所述轴向上的多个区域相对应，每个所述冷却件用于单独调节一个区域的温度。
  5. 根据权利要求3所述辊压装置，其中，所述冷却件用于向所述辊压面喷射冷却介质以调节所述辊压面的温度。
  6. 根据权利要求5所述辊压装置，其中，所述辊压装置还包括除尘机构，所述除尘机构与所述辊压面相对设置。
  7. 根据权利要求6所述辊压装置，其中，所述除尘机构与所述冷却件设置在所述轧辊的同一侧。
  8. 根据权利要求1所述辊压装置，其中，所述调节组件包括导向件和驱动件，所述导向件沿着所述轧辊的轴向延伸，所述换热组件可移动地连接于所述导向件，所述驱动件与所述换热组件驱动连接，所述驱动件用于驱动所述换热组件沿所述导向件移动。
  9. 根据权利要求1所述辊压装置，其中，所述换热组件具有换热面，所述换热面与所述辊压面相对，所述换热面为圆弧面，所述换热面与所述轧辊同轴设置。
  10. 一种辊压系统，其中，所述辊压系统包括：
    权利要求1-9任一项所述的辊压装置；
    测量装置，用于测量辊压后的所述目标件的厚度；
    控制器，与所述测量装置和所述调节组件通信连接，所述控制器被配置为根据所述测量装置的测量值控制所述调节组件，调节所述换热组件在所述轧辊的轴向上的位置，以使所述换热组件调节所述辊压面在所述轴向上的不同区域的温度。
  11. 根据权利要求10所述辊压系统，其中，所述辊压系统还包括温度检测装置，所述温度检测装置与所述控制器通信连接，所述温度检测装置用于检测所述辊压面在所述轴向上的不同区域的温度；
    所述控制器被配置为根据所述测量装置的测量值和所述温度检测装置的检测值控制所述调节组件，调节所述换热组件在所述轧辊的轴向上的位置，以使所述换热组件调节所述辊压面在所述轴向上的不同区域的温度。
PCT/CN2022/120302 2021-11-25 2022-09-21 辊压装置及辊压系统 WO2023093247A1 (zh)

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