WO2024065991A1 - 轧辊及辊压装置 - Google Patents

轧辊及辊压装置 Download PDF

Info

Publication number
WO2024065991A1
WO2024065991A1 PCT/CN2022/133803 CN2022133803W WO2024065991A1 WO 2024065991 A1 WO2024065991 A1 WO 2024065991A1 CN 2022133803 W CN2022133803 W CN 2022133803W WO 2024065991 A1 WO2024065991 A1 WO 2024065991A1
Authority
WO
WIPO (PCT)
Prior art keywords
rolling
heat exchange
axial direction
rolling roller
mounting hole
Prior art date
Application number
PCT/CN2022/133803
Other languages
English (en)
French (fr)
Inventor
曹海尚
肖玉升
张琦
谢媛媛
Original Assignee
江苏时代新能源科技有限公司
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.)
Filing date
Publication date
Application filed by 江苏时代新能源科技有限公司 filed Critical 江苏时代新能源科技有限公司
Publication of WO2024065991A1 publication Critical patent/WO2024065991A1/zh

Links

Images

Classifications

    • 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
    • B21B27/02—Shape or construction of rolls
    • B21B27/021—Rolls for sheets or strips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
    • 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
    • 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
    • B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
    • 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
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
    • B21B2013/021—Twin mills
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present application relates to the technical field of battery manufacturing equipment, and in particular to a rolling roller and a rolling device.
  • Power batteries are widely used in the field of new energy, such as electric vehicles and new energy vehicles. 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.
  • the rollers are prone to bending and deformation in the radial direction, resulting in inconsistent radial dimensions of the rollers at different axial positions, which leads to poor thickness consistency of the rolled pole pieces, and further reduces the performance of the power battery.
  • the purpose of the present application is to provide a roller and a rolling device having the roller, which can effectively solve the problem that the roller is prone to bending and deformation in the radial direction during the rolling process.
  • the first aspect of the present application discloses a roller for rolling a pole piece, comprising:
  • a rolling part wherein the outer surface of the rolling part is formed with a rolling surface for rolling the electrode sheet, and the interior of the rolling part is provided with a mounting hole along its axial direction;
  • a temperature regulating component is arranged in the mounting hole and is used for heat exchange with the rolling part.
  • a temperature regulating component is arranged in the mounting hole of the rolling part and is used for heat exchange with the rolling part.
  • the temperature in the axial direction of the rolling part is adjusted by the temperature regulating component, and then the radial deformation of the rolling part is adjusted by the characteristics of thermal expansion and contraction, thereby reducing the overall deformation of the rolling part, ensuring the thickness consistency of the pole piece after rolling, and thus ensuring the performance of the power battery formed by the pole piece.
  • the temperature regulating assembly includes a plurality of temperature regulating parts, which are arranged in the mounting hole at intervals along the axial direction of the rolling part, and are respectively used for independent heat exchange with the rolling part.
  • the temperature regulating part is a heat exchange semiconductor or a heat exchange part with a heat exchange medium.
  • the heat exchange semiconductor or the heat exchange part with a heat exchange medium can perform heat exchange with the rolling part, thereby adjusting the temperature of the rolling part, and then adjusting the radial deformation of the rolling part.
  • the temperature regulating member is a heat exchange semiconductor
  • the roller further includes a conductive component, which includes a first conductive member and a second conductive member, wherein the first conductive member is disposed in the mounting hole and is conductively connected to the heat exchange semiconductor, and the second conductive member is disposed outside the mounting hole and is used to be conductively connected to a power source, and the first conductive member and the second conductive member can move relative to each other and be conductively connected.
  • the first conductive member and the second conductive member By arranging the first conductive member and the second conductive member to connect an external power source and the heat exchange semiconductor, power is supplied to the heat exchange semiconductor, so that the heat exchange semiconductor and the rolling part perform heat exchange, thereby adjusting the temperature of the rolling part, and further adjusting the radial deformation of the rolling part.
  • the first conductive member and the second conductive member are both graphite conductive members, and the first conductive member and the second conductive member are in contact and conduct electricity.
  • the heat exchange semiconductor can be effectively conducted, thereby controlling the heat exchange between the heat exchange semiconductor and the rolling part, thereby adjusting the temperature of the rolling part, and then adjusting the radial deformation of the rolling part.
  • the first conductive member and the second conductive member are both magnetic induction coil conductive members, and the first conductive member and the second conductive member are spaced apart and inductively conductive.
  • the heat exchange semiconductor can be effectively conducted, thereby controlling the heat exchange between the heat exchange semiconductor and the rolling part, thereby adjusting the temperature of the rolling part, and then adjusting the radial deformation of the rolling part.
  • the heat exchange semiconductor is a refrigeration semiconductor; or, the heat exchange semiconductor is a heating semiconductor.
  • the rolling part is cooled and contracted at each position in the axial direction, thereby suppressing the radial deformation of the rolling part, so that the radial dimensions of the rolling part at each position in the axial direction are basically consistent.
  • the rolling part is heated and expanded at each position in the axial direction, thereby balancing the radial deformation of the rolling part at each position in the axial direction, so that the radial dimensions of the rolling part at each position in the axial direction are basically consistent.
  • the heat exchange semiconductor is a refrigeration semiconductor
  • a plurality of refrigeration semiconductors are symmetrically arranged about the middle position of the rolling part in the axial direction, and the refrigeration power of the refrigeration semiconductor gradually decreases when the two ends of the rolling part are facing the middle position in the axial direction. Due to the reaction force of the roller under the pole piece, the radial deformation size of the middle position of the rolling part in the axial direction is large, and the radial deformation size of the two end positions is small.
  • the power of the refrigeration semiconductors at the two end positions when working is set to be greater than the power of the refrigeration semiconductors at the middle position when working, so that the contraction of the two end positions of the rolling part is greater than that of the middle position, thereby adjusting the radial size of each position of the rolling part in the axial direction, so that the radial size of each position of the rolling part in the axial direction is basically consistent.
  • the heat exchange semiconductor is a heating semiconductor, and a plurality of heating semiconductors are symmetrically arranged about the middle position of the rolling part in the axial direction, and the heating power of the heating semiconductor gradually increases when the two ends of the rolling part are facing the middle position in the axial direction. Due to the reaction force of the roller under the pole piece, the radial deformation size of the middle position of the rolling part in the axial direction is large, and the radial deformation size of the two end positions is small.
  • the power of the heating semiconductors at the two end positions when working is set to be smaller than the power of the heating semiconductors at the middle position when working, so that the expansion of the two end positions of the rolling part is smaller than the expansion of the middle position, thereby adjusting the radial size of each position of the rolling part in the axial direction, so that the radial size of each position of the rolling part in the axial direction is basically consistent.
  • the mounting hole is a through hole that penetrates the roller in the axial direction, the through hole is coaxially arranged with the roller, and the first conductive member is arranged at one end of the through hole facing the second conductive member.
  • the first conductive member is arranged in the mounting hole and coaxially arranged with the roller, and when the roller rotates to roll the electrode sheet, the first conductive member rotates with the roller around the axial direction, which can ensure that the rotation position of the first conductive member remains unchanged, thereby ensuring that the first conductive member and the second conductive member are always in contact and conductive.
  • the roller further includes an air supply assembly, which is arranged outside the other end of the mounting hole away from the second conductive member, and is used to deliver a cooling airflow toward the mounting hole.
  • the heat exchange semiconductor releases a certain amount of heat during the heat exchange process with the rolling part.
  • an air supply assembly is provided, so that the airflow delivered by the air supply assembly cools and dissipates the released heat.
  • the temperature regulating member is a heat exchange member having a heat exchange medium
  • the roller further comprises a heat exchange tube, the interior of which is formed with a channel for the heat exchange medium to flow, and the channel is connected to the interior of the heat exchange member.
  • the heat exchange tube is connected to the heat exchange member, so that the heat exchange medium inside the heat exchange member is replaced, ensuring that the heat exchange medium in the heat exchange member has a sufficient temperature to exchange heat with the rolling part, thereby adjusting the temperature of the rolling part.
  • one end of the heat exchange tube is arranged outside the mounting hole, and the other end of the heat exchange tube is inserted into the mounting hole and communicated with the heat exchange element, and the heat exchange element is spaced apart from the inner wall of the mounting hole under the support of the heat exchange tube.
  • the heat exchange element is spaced apart from the inner wall of the mounting hole under the support of the heat exchange tube, so that the heat exchange tube is suspended in the mounting hole.
  • the heat exchanger is a refrigeration member with a cooling medium; or, the heat exchanger is a heating member with a heating medium.
  • a refrigeration member with a cooling medium By providing a refrigeration member with a cooling medium, the rolling part is cooled and contracted at various positions along the axial direction, thereby suppressing the radial deformation of the rolling part, so that the radial dimensions of the rolling part at various positions along the axial direction are basically consistent.
  • a heating member with a heating medium the rolling part is heated and expanded at various positions along the axial direction, thereby balancing the radial deformation of the rolling part at various positions along the axial direction, so that the radial dimensions of the rolling part at various positions along the axial direction are basically consistent.
  • the heat exchanger is a refrigeration element with a cooling medium, and a plurality of refrigeration elements are symmetrically arranged about the middle position of the rolling part in the axial direction, and the refrigeration power of the refrigeration element when working gradually decreases as the two ends of the rolling part in the axial direction face the direction of the middle position. Due to the reaction force of the roller on the pole piece, the radial deformation size of the middle position of the rolling part in the axial direction is large, and the radial deformation size of the two end positions is small.
  • the power of the refrigeration element at the two end positions when working is set to be greater than the power of the refrigeration element at the middle position when working, so that the contraction of the two end positions of the rolling part is greater than that of the middle position, thereby adjusting the radial size of each position of the rolling part in the axial direction, so that the radial size of each position of the rolling part in the axial direction is basically consistent.
  • the heat exchanger is a heating element with a heating medium, and a plurality of heating elements are symmetrically arranged about the middle position of the rolling part in the axial direction, and the heating power of the heating element gradually increases when the two ends of the rolling part are facing the middle position in the axial direction. Due to the reaction force of the roller under the pole piece, the radial deformation size of the middle position of the rolling part in the axial direction is large, and the radial deformation size of the two ends is small.
  • the power of the heating elements at the two ends is set to be smaller than the power of the heating elements at the middle position, so that the expansion of the two ends of the rolling part is smaller than that of the middle position, thereby adjusting the radial size of each position of the rolling part in the axial direction, so that the radial size of each position of the rolling part in the axial direction is basically consistent.
  • the rolling part includes a plurality of heat conducting parts and a plurality of heat insulating parts alternately arranged in sequence along the axial direction, the heat conducting parts and the heat insulating parts are connected in a close connection, and a plurality of temperature regulating parts are arranged in a one-to-one correspondence with the plurality of heat conducting parts.
  • the rolling part can be divided into a plurality of sections in the axial direction, and there is no heat exchange between the sections, so that the temperature of each section can be adjusted separately, so that the rolling part has different temperatures in the axial direction, and then the radial dimensions at different positions along the rolling surface in the axial direction are basically kept consistent, so as to ensure the thickness consistency of the pole piece after rolling.
  • the outer surfaces of the plurality of heat conducting parts and the outer surfaces of the plurality of heat insulating parts together form a rolling surface for rolling the pole piece, and the rolling surface is cylindrical in a natural state.
  • the roller further includes a first connection portion and a second connection portion, and the first connection portion and the second connection portion are respectively connected to two ends of the rolling portion in the axial direction.
  • the first connection portion and the second connection portion are arranged at two ends of the rolling portion in the axial direction and connected to the rolling portion, so as to support the rotation of the rolling portion and realize the rolling process of the electrode sheet.
  • the roller further includes a first connecting portion and a second connecting portion
  • the rolling portion includes an inner cylinder portion and an outer cylinder portion
  • the inner cylinder portion, the first connecting portion and the second connecting portion are an integrated structure and form a roller shaft
  • the outer cylinder portion is sleeved on the outside of the inner cylinder portion
  • the inner cylinder portion is provided with a mounting hole along its own axial direction.
  • a second aspect of the present application proposes a rolling device, which has a first roller and a second roller, the first roller and the second roller are used together to roll the pole piece, wherein at least one of the first roller and the second roller is any one of the rollers mentioned above.
  • FIG1 is a front structural schematic diagram of a rolling device according to an embodiment of the present application.
  • FIG2 is a schematic side view of the structure of a rolling device according to an embodiment of the present application.
  • FIG3 is a schematic diagram of the front structure of a first roller according to an embodiment of the present application.
  • FIG4 is a schematic diagram of the side structure of a first roller according to an embodiment of the present application.
  • FIG5 is a schematic diagram of the connection structure between the temperature adjustment component and the conductive component according to an embodiment of the present application
  • FIG6 is a front structural schematic diagram of a first roller according to another embodiment of the present application.
  • FIG7 is a front structural schematic diagram of a first roller according to another embodiment of the present application.
  • FIG8 is a schematic diagram of the deformation structure of the first rolling roller under the action of the pressure mechanism according to one embodiment of the present application.
  • a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium.
  • a first feature being “above”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.
  • a first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
  • Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields.
  • electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields.
  • the quality of pole pieces determines the performance of power batteries to a certain extent.
  • the inventor of the present application noticed that the pole piece needs to be rolled by a rolling device during the production process.
  • the pressure mechanism provides extrusion force on both sides of the roller in the axial direction
  • the pole piece located in the middle of the roller provides a reaction force, causing the roller to bend and deform in the radial direction, resulting in inconsistent radial dimensions of the rolling surface of the roller at various positions in the axial direction, and causing inconsistent thickness dimensions of the pole piece after rolling, making the thickness of the pole piece thick in the middle and thin on both sides, thereby reducing the quality of the pole piece and affecting the performance of the power battery.
  • the inventors of the present application have discovered that by arranging a temperature regulating component inside the roller, and the temperature regulating component is used for heat exchange with the rolling part, when the rolling part rolls the pole piece, the temperature in the axial direction of the rolling part is adjusted by the temperature regulating component, and then the radial deformation of the rolling part is adjusted by the characteristics of thermal expansion and contraction, thereby reducing the overall deformation of the rolling part, ensuring the thickness consistency of the pole piece after rolling, and thus ensuring the performance of the power battery formed by the pole piece.
  • FIG1 is a schematic diagram of the front structure of a rolling device 100 according to an embodiment of the present application.
  • FIG2 is a schematic diagram of the side structure of a rolling device 100 according to an embodiment of the present application.
  • the rolling device 100 is used to roll the pole piece 200, and includes a first roller 1 and a second roller 2, which are arranged opposite to each other and are rotatably arranged on a mounting seat 3.
  • a pressing mechanism 4 is provided at both ends of the first roller 1 and the second roller 2.
  • the pole piece 200 is placed between the first roller 1 and the second roller 2.
  • the pressing mechanism 4 the first roller 1 and the second roller 2 approach each other and squeeze the pole piece 200, and at the same time, the first roller 1 and the second roller 2 rotate around their own axial directions, thereby rolling the pole piece 200.
  • the structures of the first roller 1 and the second roller 2 can be the same or different, as long as they can jointly roll the pole piece 200.
  • first roller 1 is used as an example for illustration in the present application.
  • FIG3 is a schematic diagram of the front structure of the first roller 1 in an embodiment of the present application.
  • FIG4 is a schematic diagram of the side structure of the first roller 1 in an embodiment of the present application.
  • the first roller 1 includes a rolling portion 10 and a temperature adjustment component 30, the outer surface of the rolling portion 10 is formed with a rolling surface for rolling the electrode sheet 200, the interior of the rolling portion 10 is provided with a mounting hole 11 along its own axial direction, the temperature adjustment component 30 is arranged in the mounting hole 11, and is used for heat exchange with the rolling portion 10.
  • the rolling part 10 refers to the part that contacts the pole piece 200 and is used to roll the pole piece 200, wherein the surface of the rolling part 10 that contacts the pole piece 200 is the rolling surface.
  • the temperature regulating component 30 can adjust its own temperature and can exchange heat with the rolling part 10, thereby adjusting the temperature of the rolling part 10.
  • the heat exchange in the present application includes contact heat exchange and non-contact heat exchange.
  • the contact heat exchange refers to the contact between the temperature regulating component 30 and the rolling part 10, thereby transferring the temperature of the temperature regulating component 30 to the rolling part 10, thereby changing the temperature of the rolling part 10.
  • the non-contact heat exchange refers to the temperature regulating component 30 and the rolling part 10 being spaced apart, and the ambient temperature in the mounting hole 11 is changed by the temperature regulating component 30, thereby adjusting the temperature of the rolling part 10 by the ambient temperature in the mounting hole 11.
  • the temperature regulating component 30 in the mounting hole 11 of the rolling part 10 and used for heat exchange with the rolling part 10, when the rolling part 10 rolls the pole piece 200, the temperature of the rolling part 10 in the axial direction is adjusted by the temperature regulating component 30, and then the radial deformation of the rolling part 10 is adjusted by the characteristics of thermal expansion and contraction, thereby reducing the overall deformation of the rolling part 10, ensuring the thickness consistency of the pole piece 200 after rolling, thereby ensuring the performance of the power battery formed by the pole piece 200.
  • the temperature adjustment assembly 30 includes a plurality of temperature adjustment parts 31, which are arranged in the mounting hole 11 at intervals along the axial direction of the rolling part 10 and are respectively used for independent heat exchange with the rolling part 10.
  • the plurality of temperature regulating members 31 can respectively perform heat exchange with the rolling part 10, and the plurality of temperature regulating members 31 are respectively controlled independently.
  • the plurality of temperature regulating members 31 can be controlled to perform heat exchange with the rolling part 10 at the same time, or only one or several of the temperature regulating members 31 can be controlled to perform heat exchange with the rolling part 10.
  • the temperature adjustment element 31 is a heat exchange semiconductor or a heat exchange element having a heat exchange medium.
  • the heat exchange semiconductor can change the temperature of the metal in contact with it when it is powered on.
  • the temperature adjustment member 31 is made of a heat exchange semiconductor
  • the rolling part 10 is made of a metal conductive material
  • the heat exchange semiconductor 31 is arranged in contact with the inner wall surface of the mounting hole 11, so that when the heat exchange semiconductor is powered on, it exchanges heat with the rolling part 10, adjusts the temperature of the rolling part 10, and then adjusts the radial deformation of the rolling part 10.
  • the temperature regulating element 31 adopts a heat exchange element with a heat exchange medium.
  • the heat exchange element with a heat exchange medium can be arranged in contact with the inner wall surface of the mounting hole 11, so as to directly transfer its own temperature to the rolling part 10, thereby adjusting the temperature of the rolling part 10; or, the heat exchange element with a heat exchange medium is spaced apart from the inner wall surface of the mounting hole 11, so as to adjust the temperature of the rolling part 10 by changing the temperature in the mounting hole 11.
  • FIG5 is a schematic diagram of the connection structure of the temperature adjustment component 30 and the conductive component 40 in one embodiment of the present application.
  • the temperature adjustment component 31 is a heat exchange semiconductor
  • the roller 1 also includes a conductive component 40, which includes a first conductive component 41 and a second conductive component 42, the first conductive component 41 is arranged in the mounting hole 11 and is conductively connected to the heat exchange semiconductor, the second conductive component 42 is arranged outside the mounting hole 11 and is used to be conductively connected to a power source (not shown in the figure), and the first conductive component 41 and the second conductive component 42 can move relative to each other and be conductively connected.
  • first conductive member 41 can be inserted into the inside of the mounting hole 11, and the other end of the first conductive member 41 can extend to the outside of the mounting hole 11 and be conductively connected to the heat exchange semiconductor through the first wire 43.
  • the second conductive member 42 is conductively connected to the power supply through the power line and can be fixed to the mounting seat 3 or other components of the rolling device 100 except the roller. In order to prevent the power line from winding and being damaged, the second conductive member 42 cannot be fixedly connected to the first conductive member 41 and rotate with the first conductive member 41. Therefore, the first conductive member 41 and the second conductive member 42 need to be connected in a relative motion and conductive manner.
  • the first conductive member 41 and the second conductive member 42 are provided to connect an external power source and a heat exchange semiconductor, thereby supplying power to the heat exchange semiconductor, allowing the heat exchange semiconductor to exchange heat with the rolling part 10, thereby adjusting the temperature of the rolling part 10 and further adjusting the radial deformation of the rolling part 10.
  • the temperature adjustment assembly 30 further includes a support member 32.
  • the support member 32 can be set as a cylindrical structure or a plurality of rod-shaped structures, and the multiple temperature adjustment members 31 are respectively fixed on the support member 32, and the support member 32 is inserted into the installation hole 11, so that the multiple temperature adjustment members 31 are arranged in the installation hole 11.
  • the first roller 1 further includes a control member 50, which is connected to the temperature adjustment component 30 via a second wire 51, so as to control the opening or closing of the temperature adjustment component 30.
  • the control member 50 can be connected to a plurality of temperature adjustment components 31 together, so as to control the opening or closing of the plurality of temperature adjustment components 31 together, or the control member 50 can be connected to a plurality of temperature adjustment components 31 separately, so as to control the opening or closing of the plurality of temperature adjustment components 31 separately.
  • the first conductive member 41 and the second conductive member 42 are both graphite conductive members, and the first conductive member 41 and the second conductive member 42 are in contact with each other for electrical conduction.
  • graphite has good electrical conductivity, and the ends of the first conductive member 41 and the second conductive member 42 that are arranged opposite to each other are abutted against each other. Therefore, when the power supply is supplied and the first conductive member 41 rotates with the first rolling roller 1, the first conductive member 41 and the second conductive member 42 move relative to each other and are conductively connected, thereby powering the heat exchange semiconductor.
  • the graphite conductive member conducts electricity through contact, which effectively conducts electricity for the heat exchange semiconductor, thereby controlling the heat exchange between the heat exchange semiconductor and the rolling part 10 , thereby adjusting the temperature of the rolling part 10 , and further adjusting the radial deformation of the rolling part 10 .
  • the first conductive member 41 and the second conductive member 42 are both magnetic induction coil conductive members, and the first conductive member 41 and the second conductive member 42 are spaced apart and inductively conductive.
  • the magnetic induction coil has good induction conductivity, and the ends of the first conductive member 41 and the second conductive member 42 that are arranged opposite to each other are spaced apart, so that when the power supply is supplied and the first conductive member 41 rotates with the first rolling roller 1, the first conductive member 41 and the second conductive member 42 move relative to each other and induce conduction, thereby powering the heat exchange semiconductor.
  • the heat exchange semiconductor can be effectively conducted, thereby controlling the heat exchange between the heat exchange semiconductor and the rolling part 10, thereby adjusting the temperature of the rolling part 10, and further adjusting the radial deformation of the rolling part 10.
  • the heat exchange semiconductor is a cooling semiconductor; or, the heat exchange semiconductor is a heating semiconductor.
  • the heat exchange semiconductor is a refrigeration semiconductor.
  • the refrigeration semiconductor is in contact with the inner wall of the mounting hole 11, thereby adjusting the temperature of the rolling part 10 in the case of electrical conduction.
  • the rolled portion 10 is cooled and shrunk at each position in the axial direction, thereby suppressing the radial deformation of the rolled portion 10 and making the radial dimensions of the rolled portion 10 at each position in the axial direction basically consistent.
  • the heat exchange semiconductor is a heating semiconductor.
  • the heating semiconductor is in contact with the inner wall of the mounting hole 11, so as to adjust the temperature of the rolling part 10 in the case of electrical conduction.
  • each position of the rolled portion 10 along the axial direction is heated and expanded, thereby balancing the radial deformation of the rolled portion 10 at each position along the axial direction, so that the radial dimensions of the rolled portion 10 at each position along the axial direction remain basically consistent.
  • the heat exchange semiconductor is a refrigeration semiconductor
  • a plurality of refrigeration semiconductors are symmetrically arranged about the middle position of the rolling part 10 in the axial direction, and the refrigeration power of the refrigeration semiconductors gradually decreases when the two ends of the rolling part 10 are facing the middle position in the axial direction.
  • the power of the refrigeration semiconductors at the two ends when working is set to be greater than the power of the refrigeration semiconductors at the middle position when working, so that the contraction of the two ends of the rolling part 10 is greater than that of the middle position, thereby adjusting the radial size of each position of the rolling part 10 in the axial direction, so that the radial size of each position of the rolling part 10 in the axial direction is basically consistent.
  • the heat exchange semiconductor is a heating semiconductor, and a plurality of heating semiconductors are symmetrically arranged about the middle position of the rolling part 10 in the axial direction, and the heating power of the heating semiconductor gradually increases when the two ends of the rolling part 10 are facing the middle position in the axial direction.
  • the power of the heating semiconductor at the two ends when working is set to be smaller than the power of the heating semiconductor at the middle position when working, so that the expansion of the two ends of the rolling part 10 is greater than that of the middle position, thereby adjusting the radial size of each position of the rolling part 10 in the axial direction, so that the radial size of each position of the rolling part 10 in the axial direction is basically consistent.
  • the mounting hole 11 is a through hole that penetrates the roller in the axial direction, the through hole is coaxially arranged with the first roller 10, and the first conductive member 41 is arranged at one end of the through hole facing the second conductive member 42.
  • the mounting hole 11 is coaxially arranged with the first roller 10, so that the first conductive member 41 installed in the mounting hole 11 can be coaxially arranged with the first roller 10, so that the first conductive member 41 rotates around its own axis during the rotation process, ensuring that the position of the first conductive member 41 remains unchanged during the rotation process, thereby ensuring that the relative position between the first conductive member 41 and the second conductive member 42 is fixed.
  • the first conductive member 41 is disposed in the mounting hole 11 and is coaxially disposed with the first roller 1.
  • the first conductive member 41 rotates together with the roller 1 around the axial direction, which can ensure that the rotation position of the first conductive member 41 remains unchanged, thereby ensuring that the first conductive member 41 and the second conductive member 42 are in contact and conductive at all times.
  • the first rolling roller also includes an air supply assembly 60, which is disposed outside the other end of the mounting hole 11 away from the second conductive member 42 and is used to transport cooling airflow toward the mounting hole 11.
  • the air supply component 60 can be a fan.
  • the air supply component 60 and the first conductive member 41 are respectively arranged at both ends of the axial direction of the mounting hole 11, and the air supply component 60 can be fixed on the mounting seat 3, or fixed on other components of the rolling device 100 except the roller, so as to avoid the air supply component 60 rotating with the roller, and ensure the normal air supply process of the air supply component 60.
  • the heat exchange semiconductor will release a certain amount of heat during the heat exchange process with the rolling part 10.
  • an air supply component 60 is provided, so that the airflow delivered by the air supply component 60 can cool and dissipate heat for the mounting hole 11.
  • the temperature regulating member 31 is a heat exchange member having a heat exchange medium
  • the first rolling roller 1 also includes a heat exchange tube (not shown in the figure), and a channel for the circulation of the heat exchange medium is formed inside the heat exchange tube, and the channel is connected to the interior of the heat exchange member.
  • the temperature of the heat exchange medium will change during the heat exchange process.
  • a heat exchange tube for the circulation and replacement of the heat exchange medium needs to be provided.
  • the heat exchange tube is connected to the heat exchange element, so that the heat exchange medium inside the heat exchange element is replaced, ensuring that the heat exchange medium in the heat exchange element has a sufficient temperature to exchange heat with the rolling part 10, so as to adjust the temperature of the rolling part 10.
  • one end of the heat exchange tube is arranged outside the mounting hole 11, and the other end of the heat exchange tube is inserted into the mounting hole 11 and connected to the heat exchange element.
  • the heat exchange element is spaced apart from the inner wall of the mounting hole 11 under the support of the heat exchange tube.
  • the heat exchange tube is used to transport the external heat exchange medium to the heat exchange element, so it is necessary to ensure the effective connection between the heat exchange tube and the external heat exchange medium supplier, so the heat exchange tube cannot rotate with the first roller 1.
  • the heat exchange tube is set as a tubular structure with a certain rigidity, so as to support the heat exchange element, so that the heat exchange element is spaced from the inner wall of the mounting hole 11 under the support of the heat exchange tube, so that the heat exchange tube is suspended in the mounting hole 11.
  • the heat exchange tube will not rotate with the rolling part 10, so as to ensure the effective connection between the heat exchange element and the heat exchange tube, and then the heat exchange medium in the heat exchange element is replaced through the heat exchange tube.
  • the heat exchange element is a refrigeration element having a cooling medium; or, the heat exchange element is a heating element having a heating medium.
  • the heat exchange element is a refrigeration element having a cooling medium, and specifically, air cooling, water cooling, liquid nitrogen cooling or other cooling methods may be used.
  • the rolling part 10 is cooled and shrunk at various positions in the axial direction, thereby suppressing the radial deformation of the rolling part 10, so that the radial dimensions of the rolling part 10 at various positions in the axial direction are basically consistent. Since the radial deformation of the middle position of the rolling part 10 in the axial direction is greater than the radial deformation of the two ends, the suppressing effect of the refrigeration element on the middle position of the rolling part 10 in the axial direction should be greater than the suppressing effect on the two ends.
  • the heat exchange element is a heating element having a heating medium, and specifically, air heating, water heating, oil heating or other heating methods may be used.
  • each position of the rolling part 10 in the axial direction is heated and expanded, thereby balancing the radial deformation of each position of the rolling part 10 in the axial direction, so that the radial dimensions of each position of the rolling part 10 in the axial direction are basically consistent. Since the radial deformation of the middle position of the rolling part 10 in the axial direction is greater than the radial deformation of the two ends, the expansion effect of the heating element on the middle position of the rolling part 10 in the axial direction should be smaller than the expansion effect on the two ends.
  • the heat exchanger is a refrigeration element with a cooling medium, and multiple refrigeration elements are symmetrically arranged about the middle position of the rolling part 10 in the axial direction, and the refrigeration power of the refrigeration element when working gradually decreases as the two ends of the rolling part 10 in the axial direction face the direction of the middle position.
  • the power of the refrigeration element at the two ends when working is set to be greater than the power of the refrigeration element at the middle position when working, so that the contraction of the two ends of the rolling part 10 is greater than that of the middle position, thereby adjusting the radial size of each position of the rolling part 10 in the axial direction, so that the radial size of each position of the rolling part 10 in the axial direction is basically consistent.
  • the heat exchange element is a heating element with a heating medium, and multiple heating elements are symmetrically arranged about the middle position of the rolling part 10 in the axial direction, and the heating power of the heating element gradually increases when the two ends of the rolling part 10 are facing the middle position in the axial direction.
  • the power of the heating element at the two ends when working is set to be smaller than the power of the heating element at the middle position when working, so that the expansion of the two ends of the rolling part 10 is smaller than that of the middle position, thereby adjusting the radial size of each position of the rolling part 10 in the axial direction, so that the radial size of each position of the rolling part 10 in the axial direction is basically consistent.
  • Figure 6 is a front structural schematic diagram of the first rolling roller 1 of another embodiment of the present application.
  • the rolling portion 10 includes a plurality of heat-conducting portions 12 and a plurality of heat-insulating portions 13 alternately arranged in sequence along the axial direction, the heat-conducting portions 12 and the heat-insulating portions 13 are fitted and connected, and a plurality of temperature regulating members 31 are arranged one-to-one correspondingly to the plurality of heat-conducting portions 12.
  • the heat conducting part 12 is an annular structure, and a mounting hole 11 is provided along the axial direction.
  • the heat conducting part 12 can be a metal part with heat conductivity, and is provided corresponding to the temperature regulating part 31, so that the temperature of a single heat conducting part 12 can be controlled by controlling the temperature regulating part 31.
  • the heat insulating part 13 is an annular structure, and a mounting hole 11 is provided along the axial direction.
  • the heat insulating part 13 is used to separate two heat conducting parts 12 provided continuously, so as to realize multi-stage individual temperature control of the rolling part 10 along the axial direction.
  • the heat insulating part 13 can be made of non-metallic materials or inorganic materials such as ceramics, plastics, and aerogels.
  • the rolled part 10 can be divided into multiple sections along the axial direction without heat exchange between the sections, so that it is convenient to adjust the temperature of each section separately, so that the rolled part 10 has different temperatures along the axial direction, and then the radial dimensions at different positions along the rolling surface in the axial direction are basically consistent, thereby ensuring the thickness consistency of the pole piece 200 after rolling.
  • the outer surfaces of the plurality of heat conducting parts 12 and the outer surfaces of the plurality of heat insulating parts 13 together form a rolling surface for rolling the pole piece 200, and the rolling surface is cylindrical in a natural state.
  • the rolling surface is cylindrical in a natural state.
  • the first roller 1 further includes a first connecting portion 21 and a second connecting portion 22, and the first connecting portion 21 and the second connecting portion 22 are respectively connected to the two ends of the rolling portion 10 in the axial direction.
  • the rolling portion 10 is an integrated independent structure, and the first connecting portion 21 and the second connecting portion 22 are respectively connected to the two ends of the rolling portion 10 in the axial direction.
  • the specific connection method can be welding or clamping, so as to support the rotation of the rolling portion 10 and realize the rolling process of the electrode sheet 200.
  • a mounting hole 11 is provided at the center of the rolling portion 10 along the axial direction, and the temperature adjustment component 30 in the mounting hole 11 can directly adjust the temperature of the rolling portion 10.
  • Fig. 7 is a front structural schematic diagram of the first roller 1 of another embodiment of the present application.
  • the first roller 1 further includes a first connecting portion 21 and a second connecting portion 22,
  • the rolling portion 10 includes an inner cylinder portion 14 and an outer cylinder portion 15, the inner cylinder portion 14, the first connecting portion 21 and the second connecting portion 22 are an integrated structure and form a roller shaft,
  • the outer cylinder portion 15 is sleeved on the outside of the inner cylinder portion 14, and the inner cylinder portion 14 is provided with a mounting hole 11 along its own axial direction.
  • the inner cylinder 14, the first connecting portion 21 and the second connecting portion 22 are an integrated structure and form a roller shaft.
  • a through hole is provided at the center of the outer cylinder 15, and the roller shaft is inserted into the through hole, and the outer cylinder 15 is sleeved on the outside of the inner cylinder 14, so as to facilitate the assembly and connection of the first roller 1.
  • a mounting hole 11 is provided at the center of the first roller shaft 1, and the mounting hole 11 sequentially penetrates the first connecting portion 21, the inner cylinder 14 and the second connecting portion 22.
  • the temperature adjustment component 30 in the mounting hole 11 is first used to adjust the temperature of the inner cylinder 14, and then the inner cylinder 14 adjusts the temperature of the outer cylinder 15, so as to adjust the radial dimensions of the rolling part 10 at various positions along the axial direction.
  • the second aspect of the present application proposes a rolling device 100, which has a first rolling roller 1 and a second rolling roller 2, and the first rolling roller 1 and the second rolling roller 2 are used together to roll the pole piece 200, wherein the first rolling roller 1 is the first rolling roller 1 of any of the above-mentioned embodiments.
  • the second roller 2 has the same structure as the first roller 1 and is also provided with a temperature regulating assembly 30 for adjusting the radial dimensions of the second roller 2 at various positions along the axial direction.
  • FIG8 is a schematic diagram of the deformation structure of the first roller 1 of an embodiment of the present application under the action of the pressure mechanism 4.
  • the first roller 1 in the present application is provided with a temperature adjustment component 30 inside.
  • the rolling surface of the first roller 1 for rolling the pole piece 200 remains cylindrical, thereby ensuring the consistency of the thickness of the pole piece 200 at the rolling location, thereby ensuring the battery performance.
  • the rolling device 100 includes a first roller 1 and a second roller 2 arranged opposite to each other, and the first roller 1 and the second roller 2 are used to roll the electrode sheet 200 together, wherein the second roller 2 has the same structure as the first roller 1 and is arranged on both sides of the electrode sheet 200.
  • the first roller 1 includes a rolling part 10, a first connecting part 21, a second connecting part 22 and a temperature adjustment component 30, and the first connecting part 21 and the second connecting part 22 are respectively connected to the two ends of the axial direction of the rolling part 10.
  • the outer surface of the rolling part 10 is formed with a rolling surface for rolling the electrode sheet 200, and the interior of the rolling part 10 is provided with a mounting hole 11 along its own axial direction, and the temperature adjustment component 30 is arranged in the mounting hole 11 and can exchange heat with the rolling part 10.
  • the temperature adjustment component 30 includes a plurality of temperature adjustment members 31, and the plurality of temperature adjustment members 31 are arranged in the mounting hole 11 at intervals along the axial direction of the rolling part 10, and are respectively used for independent heat exchange with the rolling part 10.
  • the rolling part 10 includes a plurality of heat-conducting parts 12 and a plurality of heat-insulating parts 13 which are alternately arranged in sequence along the axial direction.
  • the heat-conducting parts 12 and the heat-insulating parts 13 are connected in a close connection.
  • a plurality of temperature-adjusting parts 31 are arranged one by one in correspondence with the plurality of heat-conducting parts 12.
  • the outer surfaces of the plurality of heat-conducting parts 12 and the outer surfaces of the plurality of heat-insulating parts 13 jointly form a rolling surface for rolling the electrode sheet 200, and the rolling surface is cylindrical in a natural state.
  • the temperature-adjusting part 31 is a heat-exchanging semiconductor, specifically a cooling semiconductor.
  • the plurality of cooling semiconductors are respectively arranged on both sides of the middle position of the rolling part 10 along the axial direction, and the power of the cooling semiconductors located at the two ends of the axial direction when working is greater than the power of the cooling semiconductor located at the middle position of the axial direction when working.
  • the first rolling roller 1 also includes a conductive component 40, and the conductive component 40 includes a first conductive component 41 and a second conductive component 42.
  • the first conductive component 41 is arranged in the mounting hole 11 and is conductively connected to the heat-exchanging semiconductor
  • the second conductive component 42 is arranged outside the mounting hole 11 and is used to be conductively connected to the power supply, and the first conductive component 41 and the second conductive component 42 can move relative to each other and be conductively connected.
  • the first conductive member 41 and the second conductive member 42 are both graphite conductive members, and the first conductive member 41 and the second conductive member 42 are in contact for electrical conduction.
  • the mounting hole 11 is a through hole that penetrates the first roller 1 in the axial direction, and the through hole is coaxially arranged with the first roller 1.
  • the first conductive member 41 is arranged at one end of the through hole facing the second conductive member 42.
  • the first roller further includes an air supply component 60, which is arranged outside the other end of the mounting hole 11 away from the second conductive member 42, and is used to deliver cooling airflow toward the mounting hole 11.

Abstract

一种轧辊，用于辊压极片（200），轧辊包括辊压部（10）和温度调节组件（30），辊压部的外表面形成有用于辊压极片的辊压面，辊压部的内部沿自身轴向方向设有安装孔（11），温度调节组件设于安装孔内，并用于与辊压部热交换；一种辊压装置（100），具有第一轧辊（1）和第二轧辊（2），第一轧辊和第二轧辊共同用于对极片进行辊压。当辊压部辊压极片时，通过温度调节组件调节辊压部的轴向方向的温度，进而通过热胀冷缩的特性对辊压部的径向变形进行调节，减小辊压部的整体变形，保证辊压后的极片的厚度一致性，从而保证由极片形成的动力电池的性能。

Description

轧辊及辊压装置
相关申请的交叉引用
本申请要求享有于2022年9月27日提交的名称为“轧辊及辊压装置”的中国专利申请202211177781.2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
本申请涉及电池制造设备技术领域，特别涉及一种轧辊及辊压装置。
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，轧辊在对极片进行辊压时，容易沿径向方向发生弯曲变形，导致轧辊沿不同轴向位置处的径向尺寸不一致，从而导致辊压的极片的厚度一致性较差，进而导致动力电池性能的降低。
发明内容
鉴于现有技术存在的缺陷，本申请的目的在于提供一种轧辊及具有该轧辊的辊压装置，其能够有效地解决轧辊在辊压过程容易沿径向方向发生弯曲变形的问题。
本申请的第一方面公开了一种轧辊，用于辊压极片，其中包括：
辊压部，所述辊压部的外表面形成有用于辊压极片的辊压面，所述辊压部的内部沿自身轴向方向设有安装孔；
温度调节组件，所述温度调节组件设于所述安装孔内，并用于与所述辊压部热交换。
根据本申请的轧辊，通过将温度调节组件设于辊压部的安装孔内，并用于与辊压部热交换，当辊压部辊压极片时，通过温度调节组件调节辊压部的轴向方向的温度，进而通过热胀冷缩的特性对辊压部的径向变形进行调节，减小辊压部的整体变形，保证辊压后的极片的厚度一致性，从而保证由极片形成的动力电池的性能。
在本申请的一些实施方式中，温度调节组件包括多个温度调节件，多个温度调节件沿辊压部的轴向方向间隔设于安装孔内，且分别用于独立与辊压部热交换。当辊压部挤压极片的过程中发生径向变形时，由于辊压面沿轴向方向上的各位置处的径向变形尺寸不等，因此需要采用多个温度调节件分别进行温度调节，从而使辊压部沿轴向方向具有不同的温度，进而使辊压面沿轴向方向的不同位置处的径向尺寸基本保持一致，保证辊压后的极片的厚度一致性。在本申请的一些实施方式中，温度调节件为换热半导体或具有换热介质的换热件。换热半导体或具有换热介质的换热件均能够与辊压部进行热交换，从而调节辊压部的温度，进而调节辊压部的径向变形。
在本申请的一些实施方式中，温度调节件为换热半导体，轧辊还包括导电组件，导电组件包 括第一导电件和第二导电件，第一导电件设于安装孔内并与换热半导体导电连接，第二导电件设于安装孔的外部并用于与电源导电连接，且第一导电件和第二导电件能够相对运动并导电连接。通过设置第一导电件和第二导电件连接外部电源和换热半导体，从而为换热半导体进行供电，使换热半导体与辊压部进行热交换，从而调节辊压部的温度，进而调节辊压部的径向变形。
在本申请的一些实施方式中，第一导电件和第二导电件均为石墨导电件，且第一导电件与第二导电件接触导电。通过石墨导电件接触导电，可有效地为换热半导体进行导电，从而控制换热半导体与辊压部进行热交换，从而调节辊压部的温度，进而调节辊压部的径向变形。在本申请的一些实施方式中，第一导电件和第二导电件均为磁感应线圈导电件，且第一导电件和第二导电件间隔设置并感应导电。通过设置磁感应线圈导电件感应导电，可有效地为换热半导体进行导电，从而控制换热半导体与辊压部进行热交换，从而调节辊压部的温度，进而调节辊压部的径向变形。
在本申请的一些实施方式中，换热半导体为制冷半导体；或，换热半导体为制热半导体。通过设置制冷半导体，对辊压部沿轴向方向上的各位置处进行冷却收缩，从而抑制辊压部的径向变形，使辊压部沿轴向方向上的各位置处的径向尺寸基本保持一致。通过设置制热半导体，对辊压部沿轴向方向上的各位置处进行加热膨胀，从而平衡辊压部沿轴向方向上的各位置处的径向变形，使辊压部沿轴向方向上的各位置处的径向尺寸基本保持一致。
在本申请的一些实施方式中，换热半导体为制冷半导体，多个制冷半导体关于辊压部沿轴向方向的中间位置对称设置，且沿辊压部的轴向方向的两端朝向中间位置的方向，制冷半导体工作时的制冷功率逐渐减小。由于轧辊在极片的反作用力的情况下，容易出现辊压部的轴向方向的中间位置径向变形尺寸大，两端位置径向变形尺寸小的问题，因此将两端位置的制冷半导体工作时的功率大于中间位置的制冷半导体工作时的功率设置，使辊压部的两端位置的收缩情况大于中间位置的收缩情况，从而调节辊压部沿轴向方向各位置的径向尺寸，使辊压部沿轴向方向各位置的径向尺寸基本保持一致。
在本申请的一些实施方式中，换热半导体为制热半导体，多个制热半导体关于辊压部沿轴向方向的中间位置对称设置，且沿辊压部的轴向方向的两端朝向中间位置的方向，制热半导体工作时的制热功率逐渐增大。由于轧辊在极片的反作用力的情况下，容易出现辊压部的轴向方向的中间位置径向变形尺寸大，两端位置径向变形尺寸小的问题，因此将两端位置的制热半导体工作时的功率小于中间位置的制热半导体工作时的功率设置，使辊压部的两端位置的膨胀情况小于中间位置的膨胀情况，从而调节辊压部沿轴向方向各位置的径向尺寸，使辊压部沿轴向方向各位置的径向尺寸基本保持一致。
在本申请的一些实施方式中，安装孔为沿轴向方向贯穿轧辊的通孔，通孔与轧辊同轴设置，第一导电件设于通孔朝向第二导电件的一端。将第一导电件设于安装孔内且与轧辊同轴设置，当轧辊转动辊压极片时，第一导电件随轧辊绕轴向方向共同转动，能够保证第一导电件的转动位置不变，从而保证第一导电件与第二导电件间时刻保持接触导电。
在本申请的一些实施方式中，轧辊还包括送风组件，送风组件设于安装孔远离第二导电件的另一端的外部，用于朝向安装孔内输送冷却气流。换热半导体在与辊压部的换热过程中会释放出一定的热量，为了防止释放出的热量对换热过程造成影响，或损坏用于连接换热半导体与第一导电件间的连接线路，故设有送风组件，从而通过送风组件输送的气流对释放出的热量进行冷却散热。
在本申请的一些实施方式中，温度调节件为具有换热介质的换热件，轧辊还包括换热管，换热管的内部形成有用于换热介质流通的通道，通道与换热件的内部相连通。通过换热管与换热件相连通，从而对换热件内部的换热介质进行更换，保证换热件内具有换热介质具有足够的温度与辊压部进行热交换，从而对辊压部的温度进行调节。
在本申请的一些实施方式中，换热管的一端设于安装孔的外部，换热管的另一端插接于安装孔内并与换热件相连通，换热件在换热管的支撑作用下与安装孔的内壁间隔设置。将换热件在换热管的支撑作用下与安装孔的内壁间隔设置，从而使换热管在安装孔内悬空设置，在辊压部的转动过程中，换热管不会随辊压部共同转动，从而保证换热件与换热管间的有效连接，进而通过换热管对换热件内的换热介质进行更换。
在本申请的一些实施方式中，换热件为具有冷却介质的制冷件；或，换热件为具有加热介质的加热件。通过设置具有冷却介质的制冷件，对辊压部沿轴向方向上的各位置处进行冷却收缩，从而抑制辊压部的径向变形，使辊压部沿轴向方向上的各位置处的径向尺寸基本保持一致。通过设置具有加热介质的加热件，对辊压部沿轴向方向上的各位置处进行加热膨胀，从而平衡辊压部沿轴向方向上的各位置处的径向变形，使辊压部沿轴向方向上的各位置处的径向尺寸基本保持一致。
在本申请的一些实施方式中，换热件为具有冷却介质的制冷件，多个制冷件关于辊压部沿轴向方向的中间位置对称设置，且沿辊压部的轴向方向的两端朝向中间位置的方向，制冷件工作时的制冷功率逐渐减小。由于轧辊在极片的反作用力的情况下，容易出现辊压部的轴向方向的中间位置径向变形尺寸大，两端位置径向变形尺寸小的问题，因此将两端位置的制冷件工作时的功率大于中间位置的制冷件工作时的功率设置，使辊压部的两端位置的收缩情况大于中间位置的收缩情况，从而调节辊压部沿轴向方向各位置的径向尺寸，使辊压部沿轴向方向各位置的径向尺寸基本保持一致。
在本申请的一些实施方式中，换热件为具有加热介质的加热件，多个加热件关于辊压部沿轴向方向的中间位置对称设置，且沿辊压部的轴向方向的两端朝向中间位置的方向，加热件工作时的制热功率逐渐增大。由于轧辊在极片的反作用力的情况下，容易出现辊压部的轴向方向的中间位置径向变形尺寸大，两端位置径向变形尺寸小的问题，因此将两端位置的加热件工作时的功率小于中间位置的加热件工作时的功率设置，使辊压部的两端位置的膨胀情况小于中间位置的膨胀情况，从而调节辊压部沿轴向方向各位置的径向尺寸，使辊压部沿轴向方向各位置的径向尺寸基本保持一致。
在本申请的一些实施方式中，辊压部包括沿轴向方向依次交替设置的多个导热部和多个隔热部，导热部和隔热部贴合连接，多个温度调节件与多个导热部一一对应设置。通过将多个导热部和多个隔热部依次交替设置，能够将辊压部沿轴向方向分隔成多段，且各段间无热交换，从而便于对各段分别进行温度调节，使辊压部沿轴向方向具有不同的温度，进而使沿辊压面沿轴向方向的不同位置处的径向尺寸基本保持一致，保证辊压后的极片的厚度一致性。
在本申请的一些实施方式中，多个导热部的外表面和多个隔热部的外表面共同形成用于辊压所述极片的辊压面，且辊压面在自然状态下呈圆柱状。通过设置圆柱状的辊压面，能够保证辊压后的极片的厚度一致性。
在本申请的一些实施方式中，轧辊还包括第一连接部和第二连接部，第一连接部和第二连接部分别与辊压部的轴向方向的两端相连。第一连接部和第二连接部设于辊压部的轴向方向的两端并与辊压部相连，从而用于支撑辊压部转动，并实现对极片的辊压过程。
在本申请的一些实施方式中，轧辊还包括第一连接部和第二连接部，辊压部包括内筒部和外筒部，内筒部、第一连接部和第二连接部为一体式结构并形成辊轴，外筒部套设于内筒部的外部，内筒部的内部沿自身轴向方向设有安装孔。通过将内筒部、第一连接部和第二连接部设置为一体式结构并形成辊轴，并将外筒部套设于辊轴的外部，从而便于对轧辊进行组装连接。
本申请的第二方面提出了一种辊压装置，该辊压装置具有第一轧辊和第二轧辊，第一轧辊和第二轧辊共同用于对极片进行辊压，其中，第一轧辊和第二轧辊中的至少一个为上述任一项的轧辊。
上述说明仅是本申请技术方案的概述，为了能够更清楚了解本申请的技术手段，而可依照说明书的内容予以实施，并且为了让本申请的上述和其它目的、特征和优点能够更明显易懂，以下特举本申请的具体实施方式。
附图说明
通过阅读下文优选实施方式的详细描述，各种其他的优点和益处对于本领域普通技术人员将变得清楚明了。附图仅用于示出优选实施方式的目的，而并不认为是对本申请的限制。而且在整个附图中，用相同的参考符号表示相同的部件。在附图中：
图1为本申请一实施方式的辊压装置的正面结构示意图；
图2为本申请一实施方式的辊压装置的侧面结构示意图；
图3为本申请一实施方式的第一轧辊的正面结构示意图；
图4为本申请一实施方式的第一轧辊的侧面结构示意图；
图5为本申请一实施方式的温度调节组件与导电组件的连接结构示意图；
图6为本申请另一实施方式的第一轧辊的正面结构示意图；
图7为本申请另一实施方式的第一轧辊的正面结构示意图；
图8为本申请一实施方式的第一轧辊在加压机构作用下的变形结构示意图。
具体实施方式中的附图标号如下：
100：辊压装置；
1：第一轧辊；
10：辊压部、11：安装孔、12：导热部、13：隔热部、14：内筒部、15：外筒部；
21：第一连接部、22：第二连接部；
30：温度调节组件、31：温度调节件、32：支撑件；
40：导电组件、41：第一导电件、42：第二导电件、43：第一导线；
50：控制件、51：第二导线；
60：送风组件；
2：第二轧辊；
3：安装座；
4：加压机构；
200：极片。
具体实施方式
下面将结合附图对本申请技术方案的实施方式进行详细的描述。以下实施方式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。
需要注意的是，除非另有说明，本申请实施方式使用的技术术语或者科学术语应当为本申请实施方式所属领域技术人员所理解的通常意义。
在本申请实施方式的描述中，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方式和简化描述，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方式的限制。此外，技术术语“第一”、“第二”等仅用于描述目的，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。在本申请实施方式的描述中，“多个”的含义是两个以 上，除非另有明确具体的限定。
在本申请实施方式的描述中，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方式中的具体含义。
在本申请实施方式的描述中，除非另有明确的规定和限定，第一特征在第二特征“上”或“下”可以是第一和第二特征直接接触，或第一和第二特征通过中间媒介间接接触。而且，第一特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下方或斜下方，或仅仅表示第一特征水平高度小于第二特征。
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。极片作为动力电池的重要组成部分，极片的质量在一定程度上决定了动力电池的性能。
本申请的发明人注意到，极片在生产过程中需要通过辊压设备进行辊压。其中，在极片的辊压过程中，加压机构在轧辊的轴向方向的两侧提供挤压力，位于轧辊中部的极片提供反作用力，使轧辊沿径向方向发生弯曲变形，导致轧辊的辊压面沿轴向方向的各位置处的径向尺寸不一致，并造成辊压后的极片的厚度尺寸不一致，使极片的厚度呈现中间厚两侧薄的情况，从而降低极片的质量，影响动力电池的性能。
为解决轧辊在辊压过程中容易沿径向方向发生弯曲变形的问题，本申请的发明人研究发现，通过在轧辊的内部设置温度调节组件，且温度调节组件用于与辊压部热交换，当辊压部辊压极片时，通过温度调节组件调节辊压部的轴向方向的温度，进而通过热胀冷缩的特性对辊压部的径向变形进行调节，减小辊压部的整体变形，保证辊压后的极片的厚度一致性，从而保证由极片形成的动力电池的性能。
图1为本申请一实施方式的辊压装置100的正面结构示意图。图2为本申请一实施方式的辊压装置100的侧面结构示意图。结合图1和图2所示，辊压装置100用于辊压极片200，包括第一轧辊1和第二轧辊2，第一轧辊1和第二轧辊2相对设置并分别以可转动的方式设于安装座3上。第一轧辊1的两端和第二轧辊2的两端分别设有加压机构4。当需要对极片200进行辊压时，将极片200置于第一轧辊1和第二轧辊2之间，通过加压机构4的作用，第一轧辊1和第二轧辊2相互靠近并挤压极片200，同时第一轧辊1和第二轧辊2分别绕自身轴向方向转动，从而对极片200进行辊压。
在本申请的一些实施方式中，第一轧辊1和第二轧辊2的结构可以相同设置，也可以不同设置，保证能够共同对极片200进行辊压即可。为描述方便，本申请中仅以第一轧辊1为例进行举例说明。
图3为本申请一实施方式的第一轧辊1的正面结构示意图。图4为本申请一实施方式的第一轧辊1的侧面结构示意图。结合图1至图4所示，在本申请的一些实施方式中，第一轧辊1包括辊压部10和温度调节组件30，辊压部10的外表面形成有用于辊压极片200的辊压面，辊压部10的内部沿自身轴向方向设有安装孔11，温度调节组件30设于安装孔11内，并用于与辊压部10热交换。
具体地，辊压部10是指与极片200相接触，用于辊压极片200的部分，其中，辊压部10用于与极片200相接触的表面为辊压面。温度调节组件30能够调节自身温度，并能够与辊压部10进行热交换，从而调节辊压部10的温度。本申请中的热交换包括接触式热交换和非接触式热交换，接触式热交换是指温度调节组件30与辊压部10相接触，从而将温度调节组 件30的温度传导至辊压部10，从而改变辊压部10的温度。非接触式热交换是指温度调节组件30与辊压部10间隔设置，通过温度调节组件30改变安装孔11内的环境温度，从而通过安装孔11内的环境温度调节辊压部10的温度。
根据本申请的第一轧辊1，通过将温度调节组件30设于辊压部10的安装孔11内，并用于与辊压部10热交换，当辊压部10辊压极片200时，通过温度调节组件30调节辊压部10的轴向方向的温度，进而通过热胀冷缩的特性对辊压部10的径向变形进行调节，减小辊压部10的整体变形，保证辊压后的极片200的厚度一致性，从而保证由极片200形成的动力电池的性能。
再结合图1至图4所示，在本申请的一些实施方式中，温度调节组件30包括多个温度调节件31，多个温度调节件31沿辊压部10的轴向方向间隔设于安装孔11内，且分别用于独立与辊压部10热交换。
具体地，多个温度调节件31能够分别与辊压部10进行热交换，且多个温度调节件31分别独立控制。当需要调节辊压部10的温度时，可同时控制多个温度调节件31分别与辊压部10热交换，或仅控制其中的一个或几个温度调节件31与辊压部10热交换。
当辊压部10挤压极片200的过程中发生径向变形时，由于辊压面沿轴向方向上的各位置处的径向变形尺寸不等，因此需要采用多个温度调节件31分别进行温度调节，从而使辊压部10沿轴向方向具有不同的温度，进而使辊压面沿轴向方向的不同位置处的径向尺寸基本保持一致，保证辊压后的极片200的厚度一致性。
结合图3和图4所示，在本申请的一些实施方式中，温度调节件31为换热半导体或具有换热介质的换热件。
具体地，换热半导体在通电的情况下能够改变与之接触的金属的温度。在本申请的一些实施方式中，温度调节件31采用换热半导体，辊压部10采用金属导电材料，换热半导体31贴合于安装孔11的内壁面设置，从而在换热半导体的通电情况下与辊压部10热交换，调节辊压部10的温度，进而调节辊压部10的径向变形。
在本申请的一些实施方式中，温度调节件31采用具有换热介质的换热件，具有换热介质的换热件可贴合于安装孔11的内壁面设置，从而将自身温度直接传导至辊压部10，进而调节辊压部10的温度；或，具有换热介质的换热件与安装孔11的内壁面间隔设置，从而通过改变安装孔11内的温度，进而调节辊压部10的温度。
图5为本申请一实施方式的温度调节组件30与导电组件40的连接结构示意图。结合图1至图5所示，在本申请的一些实施方式中，温度调节件31为换热半导体，轧辊1还包括导电组件40，导电组件40包括第一导电件41和第二导电件42，第一导电件41设于安装孔11内并与换热半导体导电连接，第二导电件42设于安装孔11的外部并用于与电源(图中未示出)导电连接，且第一导电件41和第二导电件42能够相对运动并导电连接。
具体地，第一导电件41的一端可插接于安装孔11的内部，第一导电件41的另一端可伸出至安装孔11的外部，并通过第一导线43与换热半导体导电连接。第二导电件42与电源通过电源线导电连接，可固定于安装座3或辊压装置100除轧辊外的其他部件上。为了防止电源线发生卷绕并损坏，第二导电件42不能够与第一导电件41固定连接并随第一导电件41共同转动。因此，第一导电件41和第二导电件42需采用相对运动并导电的连接方式。
通过设置第一导电件41和第二导电件42连接外部电源和换热半导体，从而为换热半导体进行供电，使换热半导体与辊压部10进行热交换，从而调节辊压部10的温度，进而调节辊压部10的径向变形。
在本申请的一些实施方式中，为了便于将多个温度调节件31共同安装于安装孔11内，且保证多个温度调节件31之间的间距尺寸，温度调节组件30还包括支撑件32。支撑件32可设置为筒状结构，或多个杆状结构，并将多个温度调节件31分别固定于支撑件32上，将支撑 件32插接于安装孔11内，从而将多个温度调节件31设于安装孔11内。
在本申请的一些实施方式中，第一轧辊1还包括控制件50，控制件50通过第二导线51与温度调节组件30相连，从而用于控制温度调节组件30的开启或关闭。其中，控制件50可与多个温度调节件31共同连接，从而控制多个温度调节件31共同开启或关闭，或控制件50可与多个温度调节件31分别单独连接，从而控制多个温度调节件31分别进行同开启或关闭。
结合图3至图5所示，在本申请的一些实施方式中，第一导电件41和第二导电件42均为石墨导电件，且第一导电件41与第二导电件42接触导电。
具体地，石墨具有良好的导电性能，第一导电件41与第二导电件42彼此相对设置的端部相抵接，从而当电源供电，且第一导电件41随第一轧辊1转动的情况下，第一导电件41和第二导电件42间相对运动并导电连接，从而为换热半导体进行供电。
通过石墨导电件接触导电，可有效地为换热半导体进行导电，从而控制换热半导体与辊压部10进行热交换，从而调节辊压部10的温度，进而调节辊压部10的径向变形。
结合图1至图3所示，在本申请的一些实施方式中，第一导电件41和第二导电件42均为磁感应线圈导电件，且第一导电件41和第二导电件42间隔设置并感应导电。
具体地，磁感应线圈具有良好的感应导电性能，第一导电件41与第二导电件42彼此相对设置的端部间隔设置，从而当电源供电，且第一导电件41随第一轧辊1转动的情况下，第一导电件41和第二导电件42间相对运动并感应导电，从而为换热半导体进行供电。
通过设置磁感应线圈导电件感应导电，可有效地为换热半导体进行导电，从而控制换热半导体与辊压部10进行热交换，从而调节辊压部10的温度，进而调节辊压部10的径向变形。结合图3至图5所示，在本申请的一些实施方式中，换热半导体为制冷半导体；或，换热半导体为制热半导体。
具体地，在本申请的一些实施方式中，换热半导体为制冷半导体。制冷半导体与安装孔11的内壁相贴合，从而在导电的情况下调节辊压部10的温度。
通过设置制冷半导体，对辊压部10沿轴向方向上的各位置处进行冷却收缩，从而抑制辊压部10的径向变形，使辊压部10沿轴向方向上的各位置处的径向尺寸基本保持一致
具体地，在本申请的一些实施方式中，换热半导体为制热半导体。制热半导体与安装孔11的内壁相贴合，从而在导电的情况下调节辊压部10的温度。
通过设置制热半导体，对辊压部10沿轴向方向上的各位置处进行加热膨胀，从而平衡辊压部10沿轴向方向上的各位置处的径向变形，使辊压部10沿轴向方向上的各位置处的径向尺寸基本保持一致。
结合图1至图5所示，在本申请的一些实施方式中，换热半导体为制冷半导体，多个制冷半导体关于辊压部10沿轴向方向的中间位置对称设置，且沿辊压部10的轴向方向的两端朝向中间位置的方向，制冷半导体工作时的制冷功率逐渐减小。由于第一轧辊1在极片200的反作用力的情况下，容易出现辊压部10的轴向方向的中间位置径向变形尺寸大，两端位置径向变形尺寸小的问题，因此将两端位置的制冷半导体工作时的功率大于中间位置的制冷半导体工作时的功率设置，使辊压部10的两端位置的收缩情况大于中间位置的收缩情况，从而调节辊压部10沿轴向方向各位置的径向尺寸，使辊压部10沿轴向方向各位置的径向尺寸基本保持一致。
结合图1至图5所示，在本申请的一些实施方式中，换热半导体为制热半导体，多个制热半导体关于辊压部10沿轴向方向的中间位置对称设置，且沿辊压部10的轴向方向的两端朝向中间位置的方向，制热半导体工作时的制热功率逐渐增大。由于第一轧辊1在极片200的反作用力的情况下，容易出现辊压部10的轴向方向的中间位置径向变形尺寸大，两端位置径向变形尺寸小的问题，因此将两端位置的制热半导体工作时的功率小于中间位置的制热半导 体工作时的功率设置，使辊压部10的两端位置的膨胀情况大于中间位置的膨胀情况，从而调节辊压部10沿轴向方向各位置的径向尺寸，使辊压部10沿轴向方向各位置的径向尺寸基本保持一致。
再结合图3至图5所示，在本申请的一些实施方式中，安装孔11为沿轴向方向贯穿轧辊的通孔，通孔与第一轧辊10同轴设置，第一导电件41设于通孔朝向第二导电件42的一端。具体地，将安装孔11与第一轧辊10同轴设置，能够使安装于安装孔11内的第一导电件41与第一轧辊10同轴设置，从而使第一导电件41在转动过程中绕自身轴线转动，确保第一导电件41在转动过程中的位置保持不变，进而保证第一导电件41和第二导电件42间的相对位置固定。
将第一导电件41设于安装孔11内且与第一轧辊1同轴设置，当第一轧辊1转动辊压极片200时，第一导电件41随轧辊1绕轴向方向共同转动，能够保证第一导电件41的转动位置不变，从而保证第一导电件41与第二导电件42间时刻保持接触导电。
再结合图1至图5所示，在本申请的一些实施方式中，第一轧辊还包括送风组件60，送风组件60设于安装孔11远离第二导电件42的另一端的外部，用于朝向安装孔11内输送冷却气流。
具体地，送风组件60可以为风扇。送风组件60和第一导电件41分别设于安装孔11的轴向方向的两端，送风组件60可固定于安装座3上，或固定于辊压装置100除轧辊外的其他部件上，从而避免送风组件60随轧辊共同转动，保证送风组件60的正常送风过程。
换热半导体在与辊压部10的换热过程中会释放出一定的热量，为了防止释放出的热量对换热过程造成影响，或损坏用于连接换热半导体与第一导电件41的第一导线43，故设有送风组件60，从而通过送风组件60输送的气流对安装孔11进行冷却散热。
再结合图3至图5所示在本申请的一些实施方式中，温度调节件31为具有换热介质的换热件，第一轧辊1还包括换热管(图中未示出)，换热管的内部形成有用于换热介质流通的通道，通道与换热件的内部相连通。
具体地，换热介质在进行换热过程中，其自身的温度会发生改变。为了保证换热介质具有足够的温度，因此需设置用于换热介质流通和更换的换热管。
通过换热管与换热件相连通，从而对换热件内部的换热介质进行更换，保证换热件内具有换热介质具有足够的温度与辊压部10进行热交换，从而对辊压部10的温度进行调节。
再结合图3至图5所示，在本申请的一些实施方式中，换热管的一端设于安装孔11的外部，换热管的另一端插接于安装孔11内并与换热件相连通，换热件在换热管的支撑作用下与安装孔11的内壁间隔设置。
具体地，换热管用于将外部换热介质输送至换热件，因此需要保证换热管与外部换热介质供给器的有效连接，因此换热管不能随第一轧辊1共同转动。将换热管设置成具有一定刚性的管状结构，从而用于支撑换热件，使换热件在换热管的支撑作用下与安装孔11的内壁间隔设置，从而使换热管在安装孔11内悬空设置，在辊压部10的转动过程中，换热管不会随辊压部10共同转动，从而保证换热件与换热管间的有效连接，进而通过换热管对换热件内的换热介质进行更换。
再次结合图3至图5所示，在本申请的一些实施方式中，换热件为具有冷却介质的制冷件；或，换热件为具有加热介质的加热件。
在本申请的一些实施方式中，换热件为具有冷却介质的制冷件，具体可以采用风冷、水冷、液氮冷或其他方的冷却方式。
通过设置具有冷却介质的制冷件，对辊压部10沿轴向方向上的各位置处进行冷却收缩，从而抑制辊压部10的径向变形，使辊压部10沿轴向方向上的各位置处的径向尺寸基本保持一致。由于辊压部10沿轴向方向的中间位置的径向变形大于两端的径向变形，因此，制冷件 对辊压部10沿轴向方向的中间位置的抑制作用应大于对两端的抑制作用。
在本申请的一些实施方式中，换热件为具有加热介质的加热件，具体可以采用风热、水热、油热或其他方式的加热方式。
通过设置具有加热介质的加热件，对辊压部10沿轴向方向上的各位置处进行加热膨胀，从而平衡辊压部10沿轴向方向上的各位置处的径向变形，使辊压部10沿轴向方向上的各位置处的径向尺寸基本保持一致。由于辊压部10沿轴向方向的中间位置的径向变形大于两端的径向变形，因此，加热件对辊压部10沿轴向方向的中间位置的膨胀作用应小于对两端的膨胀作用。
结合图1至图5所示，在本申请的一些实施方式中，换热件为具有冷却介质的制冷件，多个制冷件关于辊压部10沿轴向方向的中间位置对称设置，且沿辊压部10的轴向方向的两端朝向中间位置的方向，制冷件工作时的制冷功率逐渐减小。由于第一轧辊1在极片200的反作用力的情况下，容易出现辊压部10的轴向方向的中间位置径向变形尺寸大，两端位置径向变形尺寸小的问题，因此将两端位置的制冷件工作时的功率大于中间位置的制冷件工作时的功率设置，使辊压部10的两端位置的收缩情况大于中间位置的收缩情况，从而调节辊压部10沿轴向方向各位置的径向尺寸，使辊压部10沿轴向方向各位置的径向尺寸基本保持一致。结合图1至图5所示，在本申请的一些实施方式中，换热件为具有加热介质的加热件，多个加热件关于辊压部10沿轴向方向的中间位置对称设置，且沿辊压部10的轴向方向的两端朝向中间位置的方向，加热件工作时的制热功率逐渐增大。由于第一轧辊1在极片200的反作用力的情况下，容易出现辊压部10的轴向方向的中间位置径向变形尺寸大，两端位置径向变形尺寸小的问题，因此将两端位置的加热件工作时的功率小于中间位置的加热件工作时的功率设置，使辊压部10的两端位置的膨胀情况小于中间位置的膨胀情况，从而调节辊压部10沿轴向方向各位置的径向尺寸，使辊压部10沿轴向方向各位置的径向尺寸基本保持一致。图6为本申请另一实施方式的第一轧辊1的正面结构示意图。结合图1至图6所示，在本申请的一些实施方式中，辊压部10包括沿轴向方向依次交替设置的多个导热部12和多个隔热部13，导热部12和隔热部13贴合连接，多个温度调节件31与多个导热部12一一对应设置。
具体地，导热部12为环状结构，沿轴线方向贯穿设有安装孔11，导热部12可选择具有导热性能的金属件，并与温度调节件31对应设置，从而通过控制温度调节件31控制单个导热部12的温度。隔热部13为环状结构，沿轴线方向贯穿设有安装孔11，隔热部13用于将连续设置的两个导热部12间隔开，从而对辊压部10沿轴向方向实现多段的单独温度控制。其中，隔热部13可采用陶瓷、塑料、气凝胶等非金属材料或无机材料。
通过将多个导热部12和多个隔热部13依次交替设置，能够将辊压部10沿轴向方向分隔成多段，且各段间无热交换，从而便于对各段分别进行温度调节，使辊压部10沿轴向方向具有不同的温度，进而使沿辊压面沿轴向方向的不同位置处的径向尺寸基本保持一致，保证辊压后的极片200的厚度一致性。
结合图1至图6所示，在本申请的一些实施方式中，多个导热部12的外表面和多个隔热部13的外表面共同形成用于辊压极片200的辊压面，且辊压面在自然状态下呈圆柱状。通过设置圆柱状的辊压面，能够保证辊压后的极片200的厚度一致性。
结合图3至图6所示，在本申请的一些实施方式中，第一轧辊1还包括第一连接部21和第二连接部22，第一连接部21和第二连接部22分别与辊压部10的轴向方向的两端相连。具体地，辊压部10为一体式的独立结构，第一连接部21和第二连接部22分别与辊压部10轴向方向的两端相连，具体连接方式可采用焊接或卡接，从而用于支撑辊压部10转动，并实现对极片200的辊压过程。辊压部10的中心位置处沿轴向方向贯穿设有安装孔11，安装孔11内的温度调节组件30可直接调节辊压部10的温度。
图7为本申请另一实施方式的第一轧辊1的正面结构示意图。结合图3、图4、图5和图7所示，在本申请的一些实施方式中，第一轧辊1还包括第一连接部21和第二连接部22，辊压部10包括内筒部14和外筒部15，内筒部14、第一连接部21和第二连接部22为一体式结构并形成辊轴，外筒部15套设于内筒部14的外部，内筒部14的内部沿自身轴向方向设有安装孔11。
具体地，内筒部14、第一连接部21和第二连接部22为一体式结构并形成辊轴，外筒部15的中心位置贯穿设有通孔，辊轴穿设于通孔内，并使外筒部15套设于内筒部14的外部，从而便于对第一轧辊1进行组装连接。第一辊轴1的中心位置贯穿设有安装孔11，安装孔11依次贯穿第一连接部21、内筒部14和第二连接部22。安装孔11内的温度调节组件30首先用于调节内筒部14的温度，在由内筒部14调节外筒部15的温度，从而对辊压部10沿轴向方向各位置处的径向尺寸进行调节。
结合图1至图7所示，本申请的第二方面提出了一种辊压装置100，该辊压装置100具有第一轧辊1和第二轧辊2，第一轧辊1和第二轧辊2共同用于对极片200进行辊压，其中，第一轧辊1为上述任一实施方式的第一轧辊1。
具体地，在本申请的一些实施方式中，第二轧辊2和第一轧辊1的结构相一致，同样设有温度调节组件30，从而用于调节第二轧辊2沿轴向方向各位置处的径向尺寸。
图8为本申请一实施方式的第一轧辊1在加压机构4作用下的变形结构示意图。结合图1、图3和图8所示，本申请中第一轧辊1由于内部设有温度调节组件30，在加压机构4和温度调节组件30的作用下，第一轧辊1用于辊压极片200的辊压面保持圆柱状，从而能够保证辊压处的极片200的厚度的一致性，进而保证电池性能。
上述说明仅是本申请技术方案的概述，为了能够更清楚了解本申请的技术手段，而可依照说明书的内容予以实施，并且为了让本申请的上述和其它目的、特征和优点能够更明显易懂，以下特举本申请的具体实施方式。
结合图1至图6所示，在本申请的一些实施方式中，辊压装置100包括相对设置的第一轧辊1和第二轧辊2，第一轧辊1和第二轧辊2用于共同辊压极片200，其中，第二轧辊2与第一轧辊1的结构相同并设于极片200两侧。具体地，第一轧辊1包括辊压部10、第一连接部21、第二连接部22和温度调节组件30，第一连接部21和第二连接部22分别与辊压部10的轴向方向的两端相连。辊压部10的外表面形成有用于辊压极片200的辊压面，辊压部10的内部沿自身轴向方向设有安装孔11，温度调节组件30设于安装孔11内，并能够与辊压部10热交换。温度调节组件30包括多个温度调节件31，多个温度调节件31沿辊压部10的轴向方向间隔设于安装孔11内，且分别用于独立与辊压部10热交换。辊压部10包括沿轴向方向依次交替设置的多个导热部12和多个隔热部13，导热部12和隔热部13贴合连接，多个温度调节件31与多个导热部12一一对应设置。多个导热部12的外表面和多个隔热部13的外表面共同形成用于辊压极片200的辊压面，且辊压面在自然状态下呈圆柱状。温度调节件31为换热半导体，具体地为制冷半导体。多个制冷半导体分别设于辊压部10沿轴向方向的中间位置的两侧，且位于轴向方向两端位置的制冷半导体工作时的功率大于位于轴向方向中间位置的制冷半导体工作时的功率。第一轧辊1还包括导电组件40，导电组件40包括第一导电件41和第二导电件42，第一导电件41设于安装孔11内并与换热半导体导电连接，第二导电件42设于安装孔11的外部并用于与电源导电连接，且第一导电件41和第二导电件42能够相对运动并导电连接。第一导电件41和第二导电件42均为石墨导电件，且第一导电件41与第二导电件42接触导电。安装孔11为沿轴向方向贯穿第一轧辊1的通孔，通孔与第一轧辊1同轴设置，第一导电件41设于通孔朝向第二导电件42的一端。第一轧辊还包括送风组件60，送风组件60设于安装孔11远离第二导电件42的另一端的外部，用于朝向安装孔11内输送冷却气流。
最后应说明的是：以上各实施方式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方式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方式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方式技术方案的范围，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，各个实施方式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方式，而是包括落入权利要求的范围内的所有技术方案。

Claims (21)

  1. 一种轧辊，用于辊压极片，其特征在于，包括：
    辊压部，所述辊压部的外表面形成有用于辊压极片的辊压面，所述辊压部的内部沿自身轴向方向设有安装孔；
    温度调节组件，所述温度调节组件设于所述安装孔内，并用于与所述辊压部热交换。
  2. 根据权利要求1所述的轧辊，其特征在于，所述温度调节组件包括多个温度调节件，多个所述温度调节件沿所述辊压部的轴向方向间隔设于所述安装孔内，且分别用于独立与所述辊压部热交换。
  3. 根据权利要求2所述的轧辊，其特征在于，所述温度调节件为换热半导体或具有换热介质的换热件。
  4. 根据权利要求2或3所述的轧辊，其特征在于，所述温度调节件为换热半导体，所述轧辊还包括导电组件，所述导电组件包括第一导电件和第二导电件，所述第一导电件设于所述安装孔内并与所述换热半导体导电连接，所述第二导电件设于所述安装孔的外部并用于与电源导电连接，且所述第一导电件和所述第二导电件能够相对运动并导电连接。
  5. 根据权利要求4所述的轧辊，其特征在于，所述第一导电件和所述第二导电件均为石墨导电件，且所述第一导电件与所述第二导电件接触导电。
  6. 根据权利要求4所述的轧辊，其特征在于，所述第一导电件和所述第二导电件均为磁感应线圈导电件，且所述第一导电件和所述第二导电件间隔设置并感应导电。
  7. 根据权利要求4所述的轧辊，其特征在于，所述换热半导体为制冷半导体；或，所述换热半导体为制热半导体。
  8. 根据权利要求4或7所述的轧辊，其特征在于，所述换热半导体为制冷半导体，多个所述制冷半导体关于所述辊压部沿轴向方向的中间位置对称设置，且沿所述辊压部的轴向方向的两端朝向中间位置的方向，所述制冷半导体工作时的制冷功率逐渐减小。
  9. 根据权利要求4或7所述的轧辊，其特征在于，所述换热半导体为制热半导体，多个所述制热半导体关于所述辊压部沿轴向方向的中间位置对称设置，且沿所述辊压部的轴向方向的两端朝向中间位置的方向，所述制热半导体工作时的制热功率逐渐增大。
  10. 根据权利要求4所述的轧辊，其特征在于，所述安装孔为沿轴向方向贯穿所述轧辊的通孔，所述通孔与所述轧辊同轴设置，所述第一导电件设于所述通孔朝向所述第二导电件的一端。
  11. 根据权利要求10所述的轧辊，其特征在于，所述轧辊还包括送风组件，所述送风组件设于所述安装孔远离所述第二导电件的另一端的外部，用于朝向所述安装孔内输送冷却气流。
  12. 根据权利要求3所述的轧辊，其特征在于，所述温度调节件为具有换热介质的换热件，所述轧辊还包括换热管，所述换热管的内部形成有用于换热介质流通的通道，所述通道与所述换热件的内部相连通。
  13. 根据权利要求12所述的轧辊，其特征在于，所述换热管的一端设于所述安装孔的外部，所述换热管的另一端插接于所述安装孔内并与所述换热件相连通，所述换热件在所述换热管的支撑作用下与所述安装孔的内壁间隔设置。
  14. 根据权利要求12所述的轧辊，其特征在于，所述换热件为具有冷却介质的制冷件；或，所述换热件为具有加热介质的加热件。
  15. 根据权利要求12或14所述的轧辊，其特征在于，所述换热件为具有冷却介质的制冷件，多个所述制冷件关于所述辊压部沿轴向方向的中间位置对称设置，且沿所述辊压部的轴向方向的两端朝向中间位置的方向，所述制冷件工作时的制冷功率逐渐减小。
  16. 根据权利要求12或14所述的轧辊，其特征在于，所述换热件为具有加热介质的加热件， 多个所述加热件关于所述辊压部沿轴向方向的中间位置对称设置，且沿所述辊压部的轴向方向的两端朝向中间位置的方向，所述加热件工作时的制热功率逐渐增大。
  17. 根据权利要求2所述的轧辊，其特征在于，所述辊压部包括沿轴向方向依次交替设置的多个导热部和多个隔热部，所述导热部和所述隔热部贴合连接，多个所述温度调节件与多个所述导热部一一对应设置。
  18. 根据权利要求17所述的轧辊，其特征在于，多个所述导热部的外表面和多个所述隔热部的外表面共同形成用于辊压所述极片的辊压面，且所述辊压面在自然状态下呈圆柱状。
  19. 根据权利要求1-18中任一项所述的轧辊，其特征在于，所述轧辊还包括第一连接部和第二连接部，所述第一连接部和所述第二连接部分别与所述辊压部的轴向方向的两端相连。
  20. 根据权利要求1-18中任一项所述的轧辊，其特征在于，所述轧辊还包括第一连接部和第二连接部，所述辊压部包括内筒部和外筒部，所述内筒部、所述第一连接部和所述第二连接部为一体式结构并形成辊轴，所述外筒部套设于所述内筒部的外部，所述内筒部的内部沿自身轴向方向设有所述安装孔。
  21. 一种辊压装置，其特征在于，具有第一轧辊和第二轧辊，所述第一轧辊和所述第二轧辊共同用于对极片进行辊压，其中，所述第一轧辊和所述第二轧辊中的至少一个为权利要求1-20中任一项所述的轧辊。
PCT/CN2022/133803 2022-09-27 2022-11-23 轧辊及辊压装置 WO2024065991A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202211177781.2 2022-09-27
CN202211177781.2A CN115254972A (zh) 2022-09-27 2022-09-27 轧辊及辊压装置

Publications (1)

Publication Number Publication Date
WO2024065991A1 true WO2024065991A1 (zh) 2024-04-04

Family

ID=83757637

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/133803 WO2024065991A1 (zh) 2022-09-27 2022-11-23 轧辊及辊压装置

Country Status (2)

Country Link
CN (1) CN115254972A (zh)
WO (1) WO2024065991A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115254972A (zh) * 2022-09-27 2022-11-01 江苏时代新能源科技有限公司 轧辊及辊压装置

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10017604A1 (de) * 2000-03-14 2001-10-18 Walzen Irle Gmbh Rotierbare Walze
CN104858234A (zh) * 2014-02-25 2015-08-26 中信国安盟固利动力科技有限公司 一种锂电池极片热轧机轧辊感应加热的方法和系统
CN108372204A (zh) * 2018-03-01 2018-08-07 燕山大学 一种分段柔性辊凸度调控轧辊
CN208321620U (zh) * 2018-06-12 2019-01-04 北京北方华创新能源锂电装备技术有限公司 一种凸度可变的锂离子电池极片轧辊装置
KR101980226B1 (ko) * 2017-11-27 2019-05-20 (주)피엔티 이차전지 전극 롤 프레스 장치
CN110479771A (zh) * 2019-07-25 2019-11-22 燕山大学 电子控温的辊凸度柔性调控轧辊
CN216226141U (zh) * 2021-11-25 2022-04-08 宁德时代新能源科技股份有限公司 辊压装置及辊压系统
CN115254972A (zh) * 2022-09-27 2022-11-01 江苏时代新能源科技有限公司 轧辊及辊压装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102527727B (zh) * 2012-01-13 2014-04-16 燕山大学 一种可柔性调节辊型曲线的轧辊
CN102527728B (zh) * 2012-01-18 2014-01-22 燕山大学 一种过盈量可调控的支撑辊
CN102581031B (zh) * 2012-01-18 2015-01-07 燕山大学 一种内源驱动式板形板厚综合调控轧机
CN106944485B (zh) * 2017-03-16 2018-07-06 燕山大学 一种用于测量电磁调控轧辊辊型曲线的装置及方法
CN110293132B (zh) * 2019-07-04 2020-07-07 燕山大学 一种具有内冷机制的多段式凸度调控轧辊
CN112453068B (zh) * 2020-11-04 2021-09-10 燕山大学 能形成连续稳定高阶辊型曲线的外冷装置及其冷却方法
CN112453069B (zh) * 2020-11-05 2021-09-14 燕山大学 分段柔性调控辊型的新型轧机外冷装置及其操作方法
CN112934975B (zh) * 2021-01-21 2022-09-02 燕山大学 一种分段控温式rpect轧辊辊型修复装置及其方法

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10017604A1 (de) * 2000-03-14 2001-10-18 Walzen Irle Gmbh Rotierbare Walze
CN104858234A (zh) * 2014-02-25 2015-08-26 中信国安盟固利动力科技有限公司 一种锂电池极片热轧机轧辊感应加热的方法和系统
KR101980226B1 (ko) * 2017-11-27 2019-05-20 (주)피엔티 이차전지 전극 롤 프레스 장치
CN108372204A (zh) * 2018-03-01 2018-08-07 燕山大学 一种分段柔性辊凸度调控轧辊
CN208321620U (zh) * 2018-06-12 2019-01-04 北京北方华创新能源锂电装备技术有限公司 一种凸度可变的锂离子电池极片轧辊装置
CN110479771A (zh) * 2019-07-25 2019-11-22 燕山大学 电子控温的辊凸度柔性调控轧辊
CN216226141U (zh) * 2021-11-25 2022-04-08 宁德时代新能源科技股份有限公司 辊压装置及辊压系统
CN115254972A (zh) * 2022-09-27 2022-11-01 江苏时代新能源科技有限公司 轧辊及辊压装置

Also Published As

Publication number Publication date
CN115254972A (zh) 2022-11-01

Similar Documents

Publication Publication Date Title
WO2024065991A1 (zh) 轧辊及辊压装置
EP1261065A2 (en) Thermal management blanketing and jacketing for battery system modules
CN107112611A (zh) 电池温度调节装置以及电池温度调节系统
CN208208927U (zh) 一种基于半导体制冷片的锂电池温控装置
WO2020093930A1 (zh) 极片辊压装置及极片辊压方法
US20160029515A1 (en) Cooling apparatus and method
CN104911544A (zh) 控温盘
WO2010128695A1 (ko) 공기 조화기
CN102536745A (zh) 热管散热装置
JPH05301336A (ja) 電子冷熱素子を利用して加熱または冷却されるシリンダまたはローラおよびその製造方法
CN112322886A (zh) 一种适用于换热器热处理的防变形方法
CN116639008A (zh) 一种控温装置及大功率充电站冷却设备
CN104928651A (zh) 一种温流室出气的可控温加热盘
WO2005038373A1 (ja) 高圧熱処理炉
CN114243165B (zh) 一种锂离子电池热管理系统
CN216362124U (zh) 一种晶圆卡盘冷却装置
CN213754128U (zh) 电机散热结构及使用该结构的气悬浮空压机
US11110500B2 (en) Uniform temperature roller system having uniform heat exchange by supercritical fluid
CN213224134U (zh) 一种料叉机构
CN220506999U (zh) 用于空调器的蒸发器及空调室内机
CN212981937U (zh) 一种防褶皱的薄膜进料装置
CN217135726U (zh) 一种电磁加热辊
CN114459153B (zh) 一种电预热蓄热式加热器
CN220750884U (zh) 一种用于液态金属的红外加热型空冷器
CN213363366U (zh) 一种便于移动的烧结炉