WO2023056846A1 - 柱状电池单体旋转浸润装置 - Google Patents

柱状电池单体旋转浸润装置 Download PDF

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Publication number
WO2023056846A1
WO2023056846A1 PCT/CN2022/120862 CN2022120862W WO2023056846A1 WO 2023056846 A1 WO2023056846 A1 WO 2023056846A1 CN 2022120862 W CN2022120862 W CN 2022120862W WO 2023056846 A1 WO2023056846 A1 WO 2023056846A1
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WO
WIPO (PCT)
Prior art keywords
roller
cylindrical battery
battery cell
battery cells
accommodating
Prior art date
Application number
PCT/CN2022/120862
Other languages
English (en)
French (fr)
Inventor
梁静冰
卓淑敏
肖仲星
黄彩虾
黄蹬峰
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.)
Filing date
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 EP22877865.0A priority Critical patent/EP4358222A1/en
Publication of WO2023056846A1 publication Critical patent/WO2023056846A1/zh

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0404—Machines for assembling batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • 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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the present application relates to the technical field of battery production, in particular to a cylindrical battery cell rotary soaking device.
  • a battery cell includes an electrode assembly and an electrolyte.
  • the lithium-ion batteries need to be left standing at high temperature after liquid injection to allow the electrolyte to fully infiltrate all parts of the battery. Only when the electrolyte of a lithium-ion battery fully infiltrates into all parts of the battery cell can the battery performance be fully exerted. If the electrolyte infiltration is not sufficient, the battery will produce lithium and black spots during charging and discharging, which will cause serious safety hazards to the use of the battery.
  • the penetration path of the electrolyte becomes longer, the compaction density of the pole piece increases, and the penetration rate of the electrolyte decreases. This leads to longer and longer battery soaking time, which seriously affects the production efficiency of the battery.
  • the application provides a battery soaking device, which is used to solve the existing technical problems of slow electrolyte penetration, long battery soaking time and low production efficiency.
  • the present application provides a cylindrical battery cell rotary soaking device, including:
  • the battery placement mechanism is used to place a plurality of columnar battery cells to be infiltrated in an array
  • the driving mechanism is connected to the battery placement mechanism through transmission, and drives the battery placement mechanism to drive the cylindrical battery unit to rotate around its column axis.
  • the above technical solution uses the battery placement mechanism to place a plurality of cylindrical battery cells to be infiltrated, and drives the battery placement mechanism through the driving mechanism to drive the cylindrical battery cells to rotate around their column axes.
  • the cylindrical battery cell can be rotated around its own column axis.
  • the electrolyte disposed inside the battery cell moves in all directions, so that the cylindrical battery cell All parts inside the battery cell are fully infiltrated, which effectively increases the penetration rate of the electrolyte and improves production efficiency.
  • the battery placement mechanism includes a plurality of rollers arranged side by side; the recess between the adjacent pair of rollers is used to place the columnar battery cells to be infiltrated, and at least one of the adjacent pair of rollers
  • One roller is a driving roller, and the driving roller is transmission-connected with the driving mechanism, and rotates around the roller shaft under the drive of the driving mechanism.
  • a plurality of side-by-side rollers are connected to the driving mechanism, and the driving mechanism drives the driving roller to rotate, and then drives the cylindrical battery cell placed above it to rotate around its own column axis, so that the electrolyte can penetrate into the battery cell more quickly various parts of the interior.
  • a roller position adjustment mechanism configured to adjust the height position of the roller and/or the horizontal inclination angle of the roller axis.
  • the horizontal inclination angle of the roller shaft can be adjusted by setting the roller position adjustment mechanism.
  • the roller shaft can be set to tilt to one side. At this time, the electrolyte inside the battery cell will move from a higher position to a lower position. Move to ensure that the end of one side inside the battery cell is fully infiltrated.
  • the operator can adjust the tilt of the roller axis to the other side through the roller position adjustment mechanism to ensure that the other end of the battery cell is also fully soaked. In this way, all parts inside the battery cell can be more fully infiltrated, covering all possible dead angle positions inside the battery cell.
  • the roller position adjustment mechanism includes a roller end lifting unit, which connects at least one roller end of the roller and drives the connected roller end to lift.
  • a roller end lifting unit which connects at least one roller end of the roller and drives the connected roller end to lift.
  • the roller end lifting unit includes a first roller end lifting unit and a second roller end lifting unit, the first roller end lifting unit and the second roller end lifting unit are respectively connected to the two ends of the roller, and independently Control the lifting of the respective connected roller ends.
  • the corresponding roller end can be directly adjusted to the predetermined height through the first roller end lifting unit and the second roller end lifting unit. In this way, both the quick adjustment of the height position of the roller and the quick adjustment of the horizontal inclination angle of the roller shaft can be realized.
  • the roller is a heating roller.
  • the heating roller is a roller with a heating function, and an electric heating cell is arranged inside it, through which the cylindrical battery cells on the battery placement mechanism can be heated to a certain extent, thereby accelerating the flow of electrolyte inside the cylindrical battery cells , so that the electrolyte can flow to various parts inside the battery cell more quickly, improving the battery wetting efficiency.
  • the battery placement mechanism includes an end fixing structure, which is used for detachable connection with one end of the columnar battery unit, and drives the detachably connected columnar battery unit to rotate.
  • one end of the cylindrical battery cell can be fixed first through the first end fixing structure, and then the first end fixing structure drives the detachably connected cylindrical battery cell to rotate during the rotation process, and the battery cell
  • the electrolyte inside it will flow to various parts inside the battery cell, thereby effectively improving the infiltration efficiency of the battery cell.
  • the cylindrical battery cell rotary soaking device also includes a base body, and the base body is provided with a plurality of accommodating structures for placing the cylindrical battery cells, and the area of the accommodating structures is larger than the columnar battery cell The radial cross-sectional area of a battery cell.
  • the accommodating structure on the base body can play a very good position limiting function, preventing the cylindrical battery cell from detaching from the end fixing structure. After all the immersion of the cylindrical battery cells is completed, it is only necessary to remove the end fixing structure at one end of the cylindrical battery cells. At this time, the other end of the cylindrical battery cells is still placed on the accommodating structure, so the base body can be transported The multiple columnar battery cells that have been infiltrated are transported in a unique way, which effectively improves the transport efficiency.
  • the accommodating structure is an accommodating tray, and a plurality of accommodating trays are arranged in an array on the base body, and the accommodating trays are detachably connected to the base body.
  • the accommodating tray on the base body can be replaced with the diameter of the current columnar battery cell to be infiltrated.
  • the accommodating tray protrudes from the surface of the base body, and the height of the accommodating tray is 1/4-1/2 of the total length of the cylindrical battery cells along the column axis.
  • the surroundings of the storage tray can act as a guardrail to prevent the cylindrical battery cells from slipping out of the predetermined area and ensure the infiltration of the cylindrical battery cells. Operation or handling operation of cylindrical battery cells is carried out steadily.
  • the accommodating structure is an accommodating groove
  • the accommodating groove extends from the surface of the base body to the inside of the base body, and the depth of the accommodating groove is 1/4-1/2 of the total length of the columnar battery cells along the column axis.
  • the battery placement mechanism further includes a conveyor belt, the conveyor belt is arranged above the columnar battery cells, the drive mechanism can drive the conveyor belt to move, and the conveyor belt can be moved A plurality of the cylindrical battery cells rotate around a column axis of the cylindrical battery cells. In this way, when the conveyor belt moves, it will drive a plurality of columnar battery cells connected to it to rotate, so that the electrolyte in the battery will flow, so that each columnar battery cell to be wetted can be fully wetted.
  • the conveyor belt is used to drive the end fixing structure to rotate.
  • the end fixing structure can be driven to rotate by the conveyor belt, and the end fixing structure drives the connected cylindrical battery unit to rotate during the rotation process, so that the electrolyte solution in the cylindrical battery unit can be fully infiltrated.
  • FIG. 1 is a schematic structural diagram of an electrolyte infiltration device involved in an embodiment of the present application
  • Fig. 2 is a schematic structural diagram of a cylindrical battery cell rotary infiltration device related to another embodiment of the present application
  • Fig. 3 is a front view of the structure of a cylindrical battery cell rotary infiltration device related to an embodiment of the present application
  • Fig. 4 is a side view of a cylindrical battery cell rotary infiltration device related to an embodiment of the present application
  • Fig. 5 is a side view of a cylindrical battery cell rotary infiltration device according to another embodiment of the present application.
  • Fig. 6 is a side view of a cylindrical battery cell rotary infiltration device according to another embodiment of the present application.
  • Fig. 7 is a front view of a cylindrical battery cell rotary infiltration device according to another embodiment of the present application.
  • Fig. 8 is a perspective view of a cylindrical battery cell rotary infiltration device according to another embodiment of the present application.
  • FIG. 9 is a top view of a cylindrical battery cell rotary infiltration device according to another embodiment of the present application.
  • Electrolyte soaking device 110. Rotating device; 120. Battery tray; 130. Controller; 140. Bracket; 1. Cylindrical battery monomer rotating soaking device; One roll end; 212, the second roll end; 22, the end fixing structure. 3. Roller position adjustment mechanism; 31. Roller end lifting unit; 311. First roller end lifting unit; 312. Second roller end lifting unit; 4. Base body; 41. Accommodating structure; 5. Columnar battery cell ; 7. Conveyor belt.
  • multiple refers to more than two (including two), similarly, “multiple groups” refers to two or more groups (including two), and “multiple pieces” refers to More than two pieces (including two pieces).
  • the battery mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity.
  • the battery cells may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries, which are not limited in this embodiment of the present application.
  • the shape of the battery cell is columnar, which facilitates its rotation and wetting.
  • a battery cell includes an electrode assembly and an electrolyte.
  • the lithium-ion batteries in the production process of lithium-ion batteries, the lithium-ion batteries need to be left standing after liquid injection to fully infiltrate the electrolyte into every corner of the battery cell, so that the battery performance can be fully exerted. If the electrolyte does not infiltrate enough inside the battery cell, it will lead to lithium precipitation and black spots during the charging and discharging process of the battery, which will cause serious safety hazards to the use of the battery.
  • the battery electrolyte infiltration device 10 includes: a rotating device 110, a battery tray 120 and a controller 130; the rotating device 110 is arranged on the bracket 140, the rotating device 110 includes a motor and a rotating shaft, the rotor of the motor is connected to the rotating shaft; the battery tray 120 is connected to one end of the rotating shaft, and the battery tray 120 is provided with several slots for placing The battery unit and the controller 130 are respectively connected with the motor.
  • the above scheme places multiple battery cells by setting multiple slots in the battery tray 120, and the battery tray 120 is connected to one end of the rotating shaft.
  • the motor drives the rotating shaft to rotate, and then drives the battery tray
  • the plurality of battery cells at 120 rotate in a circle around the rotation axis, thereby ensuring sufficient flow of the electrolyte in the battery cells, thereby completing the infiltration of the battery.
  • this method of battery infiltration has at least the following disadvantages: (1) Multiple slots need to be provided on the battery tray 120 to snap into the battery cells, and there is a problem that the battery is inconvenient to take and place (2)
  • the battery tray 120 on which the battery cells are placed rotates in a circle around the rotation axis of the motor, which will cause the battery cells near the rotation axis to rotate at a slower speed, and there is a dead angle of infiltration inside, resulting in a decrease in infiltration efficiency.
  • the cylindrical battery cell rotary soaking device 1 includes a battery placement mechanism 2 and a drive mechanism, the battery placement mechanism 2 is used to place a plurality of columnar battery cells 5 to be infiltrated in an array; the drive mechanism is connected to the battery placement mechanism 2, and drives the battery placement mechanism 2 to drive the columnar battery cells 5 to rotate around their column axes.
  • the electrolyte solution inside the cylindrical battery cell will be placed at the lower position inside the battery cell due to its own gravity, which makes the electrolyte solution inside the battery cell have the problem of uneven and insufficient infiltration, that is, the battery cell
  • the wetting effect of the inner lower position is often better than that of the upper position, and the cylindrical battery cell rotary wetting device 1 of the present application can well solve this problem.
  • a plurality of cylindrical battery cells 5 can be placed in the battery placement mechanism 2 in an array, and then the driving mechanism is turned on, and the driving mechanism drives the battery placement mechanism 2.
  • the mechanism 2 drives the cylindrical battery cell 5 to rotate around its column axis.
  • the electrolyte inside the battery cell continuously flows from the lower position to the upper position, and then from the upper position to the lower position, and so on, so as to ensure that the electrolyte can fully infiltrate the battery cell Every corner of the interior can effectively improve the infiltration efficiency of the battery.
  • the rotational speed at which the battery placement mechanism 2 drives the plurality of cylindrical battery cells 5 can be adjusted by controlling the rotational speed of the driving mechanism.
  • the rotation speed of the driving mechanism can be set to a constant speed, so that the battery placement mechanism 2 drives the plurality of cylindrical battery cells 5 to rotate at a constant speed, so that the electrolyte can infiltrate the inside of the cylindrical battery cells more evenly.
  • the battery placement mechanism 2 refers to a mechanism capable of placing a plurality of cylindrical battery cells
  • the drive mechanism is a mechanism capable of driving the battery placement mechanism 2 to rotate, which may be a hydraulic drive mechanism, a pneumatic drive mechanism, or an electric drive mechanism. Mechanisms and mechanical drive mechanisms, etc.
  • the above technical solution first uses the battery placement mechanism 2 to place a plurality of columnar battery cells 5 to be infiltrated, and then uses the driving mechanism to make the battery placement mechanism 2 drive the columnar battery cells 5 to rotate around their column axes.
  • the rotation of the plurality of cylindrical battery cells 5 around their own column axes can be realized, thereby accelerating the flow of electrolyte solution inside the plurality of columnar battery cells 5, ensuring that the electrolyte solution can Flowing to every corner of the columnar battery cell as much as possible, significantly shortens the time required for battery soaking, and effectively improves the production efficiency of the columnar battery cell.
  • the cylindrical battery cell 5 rotates around its column axis, compared with the circular rotation around the rotation axis, it can make the electrolyte infiltrate the inside of the battery cell more uniformly, ensuring that each part of each cylindrical battery cell can be fully infiltrated.
  • the battery placement mechanism 2 to place a plurality of columnar battery cells 5 in an array, it is convenient to take and place and easy to operate.
  • the battery placement mechanism 2 includes a plurality of rollers 21 arranged side by side; the recesses between adjacent pairs of rollers 21 are used to place columnar battery cells to be infiltrated 5. At least one of the adjacent pair of rollers 21 is a driving roller.
  • the driving roller is connected to the driving mechanism in transmission, and rotates around the roller shaft under the drive of the driving mechanism, thereby driving a plurality of cylindrical battery cells placed above it.
  • the body rotates around its own axis.
  • the roller is a cylindrical part that can rotate on the machine.
  • the roller can be solid or hollow; the surface of the roller can be smooth or rough, as long as it can be rotated on the machine.
  • the cylindrical parts are all within the protection scope of the present embodiment.
  • both rollers in an adjacent pair of rollers can be set as driving rollers, that is, both rollers in an adjacent pair of rollers are connected to the driving mechanism in transmission, and can be driven by the drive mechanism.
  • the cylindrical battery cell 5 is placed in the recess between the adjacent pair of rollers 21, and the adjacent pair of rollers rotate in the same direction, driving the cylindrical battery cell at the recess between the two to rotate around its own cylindrical axis.
  • the rotation direction of the roller rotates, so that the electrolyte solution inside the cylindrical battery cell can penetrate into various parts inside the battery cell more quickly.
  • only one of the adjacent pair of rollers 21 is a driving roller, and the other is a driven roller;
  • the shaft rotates;
  • the driven roller is not connected to the driving mechanism, but is driven by the driving roller to rotate.
  • the cylindrical battery cell 5 can be placed in the recess between the adjacent driving roller and the driven roller, and the driving roller drives the driven roller to rotate in a certain direction, and then drives the columnar battery cell 5 in the recess between the two.
  • the battery cell rotates around its own column shaft in the direction of roller rotation, so that the electrolyte inside the cylindrical battery cell can penetrate into various parts inside the battery cell more quickly.
  • the battery placement mechanism 2 may include a plurality of roller units arranged side by side, when the roller unit includes a driving roller and a driven roller , then during use, the rotation directions of a part of the roller units of the battery placement mechanism 2 and the other part of the roller units may be the same or different.
  • the rollers with serial numbers 1-5 arranged side by side from left to right.
  • the rollers with serial numbers 1 and 2 constitute the first roller unit
  • the rollers with serial numbers 4 and 5 constitute the second roller unit
  • the rollers of 2 and 5 are driven rollers, and the rotation directions of the first roller unit and the second roller unit can be the same or different.
  • first roller unit rotates clockwise
  • second roller unit rotates counterclockwise
  • first roller unit rotates counterclockwise
  • second roller unit rotates clockwise
  • first roller unit and the second The roller units all rotate clockwise or counterclockwise to meet the needs of different application scenarios.
  • the cylindrical battery cell rotary infiltration device 1 further includes a roller position adjustment mechanism 3 .
  • the roller position adjustment mechanism 3 is used to adjust the height position of the roller and/or the horizontal inclination angle of the roller axis.
  • the horizontal inclination angle refers to the angle formed by the roller axis and the horizontal line or plane.
  • the roller position adjustment mechanism 3 adjusts the height position of the roller to make the height of one roller end higher than that of the other roller end, the roller axis and the horizontal plane form a certain angle, that is, the horizontal inclination angle of the roller axis.
  • the size of the horizontal inclination of the roller axis will affect the flow trend of the electrolyte in the cylindrical battery cell.
  • the roller includes a first roller end 211 and a second roller end 212.
  • the first roller end 211 is a section on the left side of the roller
  • the second roller end 212 is an end on the right side of the roller.
  • the operator can adjust the height position of the rollers to a height suitable for their work, which is convenient for them to pick and place the cylindrical battery cells during work.
  • the horizontal inclination angle of the roller shaft can be adjusted by setting the roller position adjustment mechanism 3.
  • the roller shaft can be set to tilt to one side.
  • the electrolyte inside the battery cell will move from a higher position to a lower position.
  • the position is moved to ensure that the end of one side inside the battery cell is fully infiltrated.
  • the operator can adjust the tilt of the roller axis to the other side through the roller position adjustment mechanism 3 to ensure that the other end of the battery cell is also fully soaked. In this way, all parts inside the battery cell can be more fully infiltrated, covering all possible dead angle positions inside the battery cell.
  • the roller position adjustment mechanism 3 includes a roller end lifting unit 31 , the roller end lifting unit 31 connects at least one roller end of the roller, and drives the connected roller end to lift.
  • the roller end lifting unit 31 can adjust the height position or horizontal inclination angle of the roller by controlling the height position of the roller end connected to it.
  • the roller end lifting unit 31 connects the two ends of the roller, the height of the two roller ends connected to it can be adjusted through the roller end lifting unit 31.
  • the roller shaft naturally presents a certain Horizontal inclination. In this way, by connecting the roller end lifting unit 31 to at least one end of the roller to adjust the lifting height of the roller end, the roller end can be quickly adjusted to a certain height, thereby realizing rapid adjustment of the horizontal inclination angle of the roller shaft.
  • the roller-end lifting unit 31 includes a first roller-end lifting unit 311 and a second roller-end lifting unit 312, and the first roller-end lifting unit 311 and the second roller-end lifting unit 312 connect the two ends of the roller 21 respectively. , and independently control the lifting of the respective connected roller ends.
  • the first roller end lifting unit 311 and the second roller end lifting unit 312 By setting the first roller end lifting unit 311 and the second roller end lifting unit 312 to connect with the two ends of the roller, when the roller shaft needs to be tilted, it is only necessary to pass the first roller end lifting unit 311 and the second roller end lifting unit 312 Just adjust the two ends of the roller to different heights, and realize the adjustment of the horizontal inclination angle of the roller shaft conveniently and quickly.
  • the corresponding roller end can be directly adjusted to the predetermined height through the first roller end lifting unit 311 and the second roller end lifting unit 312 . In this way, both the quick adjustment of the height position of the roller and the quick adjustment of the horizontal inclination angle of the roller shaft can be realized.
  • the first roll end lifting unit 311 can be passed first. Raise the left end of the roller so that the height of the left end of the roller is higher than the height of the right end, and the electrolyte in the cylindrical battery cell will flow from left to right due to gravity, ensuring that the right side of the cylindrical battery cell is fully infiltrated.
  • the left end of the roller can be raised by the first roller end lifting unit 311 or the right end of the roller can be raised by the second roller end lifting unit 312, so that the height of the right end of the roller is higher.
  • the electrolyte in the columnar battery cell will flow from right to left due to gravity, so that the left side of the columnar battery cell can be fully infiltrated.
  • the first roller end lifting unit 311 and the second roller end lifting unit 312 can be telescopic tubes, lifting arms, height adjustment blocks, etc.
  • the first roller end lifting unit 311 and the second roller end lifting unit 312 can be telescopic tubes, lifting arms, height adjustment blocks, etc.
  • roll 21 is a heated roll.
  • the heating roller is a roller with a heating function, and an electric heating cell is arranged inside it, through which the cylindrical battery cells on the battery placement mechanism 2 can be heated to a certain extent, thereby accelerating the electrolyte solution inside the cylindrical battery cells. Flow, so that the electrolyte can flow to various parts inside the battery cell more quickly, while improving the infiltration efficiency of the battery, it can also make the infiltration effect of each part inside the battery cell more uniform.
  • the heating roller may be an electromagnetic heating roller, a thermal oil heating roller, or the like.
  • the roller has a heating function, it is within the scope of protection of this embodiment.
  • the battery placement mechanism 2 includes an end fixing structure 22, which is used to detachably connect with one end of a cylindrical battery cell, and drive the Disconnect the connected cylindrical battery cells by turning.
  • one end of the cylindrical battery cell can be fixed by the end fixing structure 22 first, and the rear end fixing structure 22 drives the detachably connected cylindrical battery cell to rotate during the rotation process.
  • the electrolyte inside it will flow to various parts inside the battery cell, thereby effectively improving the infiltration efficiency of the battery.
  • it is only necessary to remove the infiltrated cylindrical battery cells from the end fixing structure 22 which is efficient and convenient.
  • one end of the columnar battery cell 5 to be infiltrated can be fixed through the end fixing structure, so that the columnar battery cell 5 to be infiltrated is fixed relatively to the placement plane, and then the columnar battery cell 5
  • a conveyor belt 7 is arranged above the battery cell 5, and the conveyor belt 7 is in contact with the surface of the columnar battery cell 5 to be wetted respectively, and then the driving mechanism drives the conveyor belt 7 to move to the left or right, and then under the action of the conveyor belt 7, the multiple
  • Each columnar battery cell 5 to be wetted rotates around its column axis, so that the electrolyte in the battery flows, so that each columnar battery cell 5 to be wetted is fully wetted.
  • the conveyor belt 7 moves from right to left, it will drive a plurality of columnar battery cells 5 connected thereto to rotate counterclockwise.
  • the detachable connection between the end fixing structure 22 and one end of the cylindrical battery cell can be a clamping connection, and the end fixing structure 22 can use jaws, clamps, etc., for example, the end fixing structure 22 is a clip
  • the claw arm of the gripper is tightened so that it is fixed to one end of the cylindrical battery cell, and then the gripper is rotated to drive the rotation of the cylindrical battery cell. After the infiltration is completed, only the claw of the gripper is controlled Release the arm to remove the cylindrical battery cell.
  • the detachable connection between the end fixing structure 22 and one end of the cylindrical battery cell can also adopt an interference fit, the two are fixed by the interference fit during use, and can be taken out directly after use.
  • the end fixing structure 22 is used to fix one end of the cylindrical battery cell and is detachably connected to one end of the cylindrical battery cell, as long as the mechanism that satisfies this function is within the scope of protection of this embodiment.
  • the cylindrical battery cell rotary soaking device 1 further includes a base body 4, and the base body 4 is provided with a plurality of accommodating structures for placing the cylindrical battery cells 41 .
  • the accommodating area of the accommodating structure 41 is greater than the radial cross-sectional area of the cylindrical battery cell 5 .
  • the accommodating structure 41 on the base body 4 can play a very good position-limiting role, preventing the cylindrical battery cell 5 from detaching from the end fixing structure 22 .
  • the end fixing structure 22 After all the immersion of the columnar battery cells 5 is completed, it is only necessary to remove the end fixing structure 22 at one end of the columnar battery cells 5. At this time, the other end of the columnar battery cells 5 is still placed in the accommodating structure 41, so it can The plurality of columnar battery cells 5 that have been infiltrated are transported by transporting the base body 4 , which effectively improves the transport efficiency.
  • the accommodating structure 41 is an accommodating tray, and a plurality of accommodating trays are arranged in an array on the base body 4 , and the accommodating trays are detachably connected to the base body 4 .
  • the accommodating tray on the base body 4 can be replaced with the current columnar battery cell to be infiltrated.
  • the size of the radial cross section of the body 5 is adapted to meet the infiltration requirements of the cylindrical battery cells 5 of different sizes.
  • the accommodating tray protrudes from the surface of the base body, and the height of the accommodating tray is 1/4-1/2 of the total length of the cylindrical battery cells 5 along the column axis.
  • the surroundings of the accommodating tray can act as a guardrail to prevent the columnar battery unit from slipping out of the predetermined area, ensuring that the columnar battery unit Steady progress of body infiltration operation or cylindrical battery cell handling operation.
  • the accommodating structure 41 can also be an accommodating groove, the accommodating groove extends from the surface of the base body 4 to the inside of the base body 4, and the depth of the accommodating groove is preferably a cylindrical battery cell 5 Along the 1/4-1/2 of the total length in the direction of the column axis, the notch area of the accommodating groove is slightly larger than the radial cross-sectional area of the columnar battery cell 5 . Since the accommodating groove is arranged inside the base body 4 , compared with the method of placing the other end of the body with an accommodating tray, the utilization rate of space can be effectively improved.

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  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Secondary Cells (AREA)

Abstract

本申请适用于电池生产制作领域，提出一种柱状电池单体旋转浸润装置（1），包括电池置放机构（2）和驱动机构；电池置放机构（2）用于以阵列形式放置待浸润的多个柱状电池单体（5）；驱动机构与电池置放机构（2）传动连接，并驱动电池置放机构（2）带动柱状电池单体（5）绕其柱轴旋转。本申请显著地缩短了电池浸润所需要的时间，有效地提高了柱状电池单体的生产效率。

Description

柱状电池单体旋转浸润装置
本申请要求于2021年10月09日提交中国专利局，申请号为202122425208.6，发明名称为“一种柱状电池单体旋转浸润装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及电池生产技术领域，特别涉及一种柱状电池单体旋转浸润装置。
 背景技术
电池单体包括电极组件和电解液。以锂离子电池为例，在锂电池的生产过程中，锂离子电池注液后需要高温静置来让电解液充分浸润到电池的各个部位。锂离子电池的电解液只有充分浸润到电芯内部各个部位，电池性能才能充分发挥。若电解液浸润不充分，电池在充放电过程中会产生析锂及黑斑，给电池使用造成严重的安全隐患。
随着电池尺寸逐渐增大，电解液渗透路径变长，极片压实密度增大，电解液渗透速度也随之下降。这导致了电池浸润所需的时间也越来越长，严重影响了电池的生产效率。
 技术问题
本申请提供了一种电池浸润装置，用于解决现有的电解液渗透速度较慢，电池浸润时间长、生产效率低的技术问题。
 技术解决方案
本申请提供了一种柱状电池单体旋转浸润装置，包括：
电池置放机构，电池置放机构用于以阵列形式放置待浸润的多个柱状电池单体；
驱动机构，驱动机构与电池置放机构传动连接，并驱动电池置放机构带动柱状电池单体绕其柱轴旋转。
上述技术方案利用电池置放机构放置待浸润的多个柱状电池单体，通过驱动机构驱动电池置放机构带动柱状电池单体绕其柱轴旋转。如此，通过电池置放机构和驱动机构的配合，能够实现柱状电池单体绕自身的柱轴旋转，在柱状电池单体转动过程中设置于电池单体内部的电解液向各个方向移动，使得柱状电池单体内部各个部位都得到充分浸润，有效提升电解液的渗透速度，提升生产效率。
作为本申请的一种实施方式，电池置放机构包括多个并排设置的辊；相邻的一对辊之间的凹部用于放置待浸润的柱状电池单体，相邻的一对辊中至少有一根辊为主动辊，主动辊与驱动机构传动连接，并在驱动机构的驱动下绕辊轴旋转。通过多个并排设置的辊与驱动机构连接，驱动机构驱动主动辊转动，进而带动放置于其上方的柱状电池单体绕着自身的柱轴旋转，使得电解液能够更加快速地渗透到电池单体内部的各个部位。
作为本申请的一种实施方式，还包括：辊位置调节机构，用于调节辊的高度位置和/或辊轴的水平倾角。通过设置辊位置调节机构来调节辊的高度位置，操作人员可以将辊的高度位置调节至适合其作业的高度，便于其在作业时对柱状电池单体进行取放。通过设置辊位置调节机构来辊轴的水平倾角，在使用时可以先将辊轴设置为向一侧倾斜，此时电池单体内部的电解液会从高度较高的位置向高度较低的位置移动，保证电池单体内部一侧端部得到充分浸润。当浸润一段时间后，操作者可以通过辊位置调节机构调节辊轴向另外一侧倾斜，保证电池单体内部另一侧端部也得到充分浸润。这样可以使得电池单体内部各个部位都能得到更加充分的浸润，覆盖电池单体内部所有可能出现的死角位置。
作为本申请的一种实施方式，辊位置调节机构包括辊端升降单元，辊端升降单元连接辊的至少一辊端，并带动所连接的辊端升降。通过辊端升降单元与辊的至少一端连接来调节辊端的升降高度，可以快速地将辊端调节至某一高度，进而实现辊轴的水平倾角的快速调整。
作为本申请的一种实施方式，辊端升降单元包括第一辊端升降单元与第二辊端升降单元，第一辊端升降单元与第二辊端升降单元分别连接辊的两端，并独立控制各自所连接的辊端的升降。通过设置第一辊端升降单元与第二辊端升降单元与辊的两端连接，当需要将辊轴倾斜设置时，只需通过第一辊端升降单元与第二辊端升降单元将辊的两端调节至不同高度即可，方便快捷地实现辊轴的水平倾角的调节。当需要将辊调节至预定高度时，可以直接通过第一辊端升降单元与第二辊端升降单元将相应辊端调节到预定高度即可。这样，既可以实现辊高度位置的快速调节，又可以实现辊轴的水平倾角的快速调节。
作为本申请的一种实施方式，辊为加热辊。加热辊为具有加热功能的辊，其内部设置有电热电芯，通过电热电芯可以对电池置放机构上的柱状电池单体进行一定程度的加热，进而加速柱状电池单体内部电解液的流动，使得电解液可以更加快速地流向电池单体内部的各个部位，提升电池浸润效率。
作为本申请的一种实施方式，电池置放机构包括端部固定结构，端部固定结构用于与柱状电池单体的一端可拆卸连接，并带动与之可拆卸连接的柱状电池单体转动。在使用过程中，可以先通过第一端部固定结构对柱状电池单体的一端进行固定，而后第一端部固定结构在转动过程中带动与之可拆卸连接的柱状电池单体转动，电池单体在绕柱轴转动过程中其内部的电解液会流动至电池单体内部的各个部位，从而有效提升电池单体的浸润效率。
作为本申请的一种实施方式，柱状电池单体旋转浸润装置还包括基座本体，基座本体上设置有多个用于放置柱状电池单体的容置结构，容置结构的区域面积大于柱状电池单体的径向横截面积。这样，在使用过程中，当端部固定结构将柱状电池单体的一端固定后，可以再将柱状电池单体的另一端放置在容置结构上，而后驱动端部固定结构转动，端部固定结构在转动过程中带动与之连接的柱状电池单体转动，从而使得柱状电池单体内的电解液得到充分浸润。在柱状电池单体转动过程中，基座本体上的容置结构可以起到很好的限位作用，防止柱状电池单体脱离端部固定结构。当柱状电池单体全部浸润完成后，只需拆下柱状电池单体一端的端部固定结构，此时柱状电池单体的另一端仍然被置于容置结构上，因而可以通过搬运基座本体的方式来搬运浸润完成的多个柱状电池单体，有效提升了搬运效率。
作为本申请的一种实施方式，容置结构为容置托盘，多个容置托盘阵列排布于基座本体上，容置托盘与基座本体可拆卸连接。通过将容置托盘与基座本体可拆卸连接，当需要对不同尺寸的柱状电池单体进行浸润时，可以将基座本体上的容置托盘更换为与当前待浸润的柱状电池单体的径向横截面相适配的尺寸，从而满足不同大小尺寸的柱状电池单体的浸润需求。
作为本申请的一种实施方式，容置托盘突出于基座本体的表面，容置托盘的高度为柱状电池单体沿柱轴方向上总长度的1/4-1/2。这样，无论是在柱状电池单体转动过程中还是在柱状电池单体搬运过程中，容置托盘的四周可以起到一个护栏作用，防止柱状电池单体滑出预定区域，保证柱状电池单体浸润操作或柱状电池单体搬运操作的稳步进行。
作为本申请的一种实施方式，所述容置结构为容置槽，所述容置槽自所述基座本体的表面向所述基座本体的内部延伸，所述容置槽的深度为所述柱状电池单体沿柱轴方向上总长度的1/4-1/2。这样，由于容置槽是设置于基座本体内部的，相较于采用容置托盘来放置本体另一端的方式，可以有效提升空间利用率。
作为本申请的一种实施方式，所述电池置放机构还包括传送带，所述传送带设于所述柱状电池单体的上方，所述驱动机构可驱动所述传送带移动，所述传送带可拨动多个所述柱状电池单体绕所述柱状电池单体的柱轴转动。这样，传送带移动时，将驱动与之连接的多个待浸润的柱状电池单体转动，从而使得电池内的电解液流动，以使各个待浸润的柱状电池单体得到充分浸润。
作为本申请的一种实施方式，所述传送带用于驱动所述端部固定结构转动。这样，可以通过传送带驱动端部固定结构转动，端部固定结构在转动过程中带动与之连接的柱状电池单体转动，从而使得柱状电池单体内的电解液得到充分浸润。
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
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为本申请一实施方式涉及的电解液浸润装置的结构示意图；
图2为本申请另一实施方式涉及的柱状电池单体旋转浸润装置结构示意图；
图3为本申请一实施方式涉及的柱状电池单体旋转浸润装置结构正视图；
图4为本申请一实施方式涉及的柱状电池单体旋转浸润装置的侧视图；
图5为本申请另一实施方式涉及的柱状电池单体旋转浸润装置的侧视图；
图6为本申请另一实施方式涉及的柱状电池单体旋转浸润装置的侧视图；
图7为本申请另一实施方式涉及的柱状电池单体旋转浸润装置的正视图；
图8为本申请另一实施方式涉及的柱状电池单体旋转浸润装置的立体图；
图9为本申请另一实施方式涉及的柱状电池单体旋转浸润装置的俯视图。
图中标记的含义为：
10、电解液浸润装置；110、转动装置；120、电池托盘；130、控制器；140、支架；1、柱状电池单体旋转浸润装置；2、电池置放机构；21、辊；211、第一辊端；212、第二辊端；22、端部固定结构。3、辊位置调节机构；31、辊端升降单元；311、第一辊端升降单元；312、第二辊端升降单元；4、基座本体；41、容置结构；5、柱状电池单体；7、传送带。
 本发明的实施方式
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。
本申请的实施例所提到的电池是指包括一个或多个电池单体以提供更高的电压和容量的单一的物理模块。电池单体可以包括锂离子二次电池、锂离子一次电池、锂硫电池、钠锂离子电池、钠离子电池或镁离子电池等，本申请实施例对此并不限定。在本实施例中，电池单体的形状为柱状，便于其旋转浸润。
电池单体包括电极组件和电解液。以锂离子电池为例，在锂电池的生产过程中，锂离子电池注液后需要通过静置的方式来使得电解液充分浸润到电池单体内部的各个角落，以便电池性能得到充分发挥。若电解液在电池单体内部浸润不充分，将导致电池在充放电过程中会产生析锂及黑斑，给电池使用造成严重的安全隐患。发明人注意到，随着电池尺寸逐渐增大，电解液渗透路径变长，极片压实密度增大，电解液渗透速率也随之下降，这导致了电池浸润所需的时间也越来越长，严重影响了电池的生产效率。
如图1所示，为了解决电池单体内部电解液浸润不充分的问题，提出了一种电池电解液浸润装置10，该电池电解液浸润装置10包括：转动装置110、电池托盘120以及控制器130；转动装置110设在支架140上，转动装置110包括电机和旋转轴，电机的转子与旋转轴连接；电池托盘120与旋转轴的一端连接，电池托盘120上设置有若干插槽用于放置电池单体；控制器130分别与电机连接。
以上方案通过设置电池托盘120中的多个插槽来放置多个电池单体，电池托盘120又与旋转轴的一端相连接，在使用过程中，电机驱动旋转轴转动，进而带动置入电池托盘120的多个电池单体绕旋转轴作圆周转动，进而保证电解液在电池单体得到充分流动，从而完成电池的浸润。然而，本发明人注意到，这一电池浸润的方式至少存在着以下缺点：（1）需要在电池托盘120上设置多个插槽来卡入电池单体，存在着电池取放不方便的问题；（2）放置电池单体的电池托盘120是绕电机的旋转轴作圆周转动，这将导致靠近旋转轴位置的电池单体转动速度较慢，内部存在着浸润死角，导致浸润效率下降。
基于以上考虑，本申请提出了一种柱状电池单体旋转浸润装置1，请参阅图2到图3，该柱状电池单体旋转浸润装置1包括电池置放机构2和驱动机构，电池置放机构2用于以阵列形式放置待浸润的多个柱状电池单体5；驱动机构与电池置放机构2传动连接，并驱动电池置放机构2带动柱状电池单体5绕其柱轴旋转。
通常，柱状电池单体内部的电解液由于自身重力作用会静置于电池单体内部的下方位置，这就使得电池单体内部的电解液存在浸润不均匀、不充分的问题，即电池单体内部下方位置的浸润效果往往比上方位置的浸润效果来得更好，而通过本申请的柱状电池单体旋转浸润装置1可以很好地解决这一问题。
具体的，在使用本申请的柱状电池单体旋转浸润装置1时，可以先将多个柱状电池单体5以阵列形式放置在电池置放机构2，而后开启驱动机构，驱动机构驱动电池置放机构2带动柱状电池单体5绕其柱轴旋转。在柱状电池单体5绕其自身柱轴旋转过程中，电池单体内部的电解液不断从下方位置流向上方位置，又从上方位置流向下方位置，如此反复，保证电解液能够充分浸润电池单体内部的各个角落，有效提升电池的浸润效率。
在实际过程中，可以通过控制驱动机构的转速来调节电池置放机构2带动多个柱状电池单体5的转动速度。优选的，可以将驱动机构的转速设为匀速，以使得电池置放机构2带动多个柱状电池单体5匀速转动，可以使得电解液在柱状电池单体内部浸润得更均匀。
当需要浸润的柱状电池单体数量较多时，可以先将其全部以阵列形式放置在电池置放机构2上，驱动机构只需驱动电池置放机构2进行旋转，就可以带动放置在电池置放机构2上的全部柱状电池单体绕其柱轴旋转，有效提升了生产效率。
在本实施例中，电池置放机构2是指能够放置多个柱状电池单体的机构，驱动机构是能够驱动电池置放机构2转动的机构，可以是液压驱动机构、气压驱动机构、电气驱动机构和机械驱动机构等。
上述技术方案先通过电池置放机构2来放置待浸润的多个柱状电池单体5，而后通过驱动机构使电池置放机构2带动柱状电池单体5绕其柱轴旋转。如此，通过电池置放机构2和驱动机构之间的配合，能够实现多个柱状电池单体5绕自身柱轴旋转，从而加速多个柱状电池单体5内部的电解液流动，保证电解液能够尽可能地流向柱状电池单体内部的各个角落，显著缩短了电池浸润所需要的时间，有效地提高了柱状电池单体的生产效率。此外，柱状电池单体5绕其柱轴进行旋转，相较于绕旋转轴作圆周旋转的方式，能够使得电解液在电池单体内部浸润得更均匀，保证各个柱状电池单体内部的各个部位都能得到充分浸润。同时，通过设置电池置放机构2以阵列形式放置多个柱状电池单体5，取放方便，便于操作。
在一些实施例中，如图2-图6所示，电池置放机构2包括多个并排设置的辊21；相邻的一对辊21之间的凹部用于放置待浸润的柱状电池单体5，相邻的一对辊21中至少有一根辊为主动辊，主动辊与驱动机构传动连接，并在驱动机构的驱动下绕辊轴旋转，进而带动放置在其上方的多个柱状电池单体绕自身柱轴转动。
辊是一种机器上能转动的圆柱形机件，辊既可以是实心的，也可以是空心的；辊表面既可以是光滑的，也可以是带有粗糙的，只要是能在机器上转动的圆柱形机件，均在本实施例的保护范围内。
在实际应用过程中，可以将相邻的一对辊中的两根辊都设为主动辊，即将相邻的一对辊中的两根辊都与驱动机构传动连接，并能够在驱动机构的驱动作用下绕着辊轴旋转。柱状电池单体5被放置于相邻的一对辊21中之间的凹部，相邻的一对辊同方向转动，带动两者之间凹部位置的柱状电池单体绕着自身的柱轴沿辊转动方向旋转，使得柱状电池单体内部的电解液能够更加快速地渗透到电池单体内部的各个部位。
在另一些实施例中，相邻的一对辊21中只有一根为主动辊，另一根为从动辊；主动辊与驱动机构传动连接，并能够在驱动机构的驱动作用下绕着辊轴旋转；从动辊未与驱动机构传动连接，是在主动辊的带动下进行旋转的。在使用过程中，可以将柱状电池单体5放置于相邻的主动辊和从动辊之间的凹部，主动辊带动从动辊沿某一方向转动，进而带动两者之间凹部位置的柱状电池单体绕着自身的柱轴沿辊转动方向旋转，使得柱状电池单体内部的电解液能够更加快速地渗透到电池单体内部的各个部位。
在另一些实施例中，如果将相邻的两根辊视为一个辊单元，电池置放机构2可以包括并排设置的多根辊单元，当辊单元包括一根主动辊和一根从动辊时，那么在使用过程中，电池置放机构2的一部分辊单元与另一部分辊单元的转动方向可以相同，也可以不同。例如有从左到右并排设置的序号为1-5的5根辊，其中，序号为1、2的辊构成第一辊单元，序号为4、5的构成第二辊单元，序号1、4的辊为主动辊，序号2、5的辊为从动辊，那么第一辊单元与第二辊单元的转动方向可以相同，也可以不同。如第一辊单元绕顺时针方向转动，第二辊单元绕逆时针方向转动；或者第一辊单元绕逆时针方向转动，第二辊单元绕顺时针方向转动；或者第一辊单元和第二辊单元都绕顺时针或都绕逆时针转动，从而满足不同应用场景的需要。
在一些实施例中，柱状电池单体旋转浸润装置1还包括辊位置调节机构3。辊位置调节机构3用于调节辊的高度位置和/或辊轴的水平倾角。具体的，水平倾角是指辊轴与水平线或水平面所成的角。当辊位置调节机构3将辊的高度位置调节至使一辊端的高度高于另一辊端的高度位置时，辊轴与水平面呈一定夹角，即辊轴的水平倾角。辊轴的水平倾角的大小会影响柱状电池单体内的电解液的流动趋势，辊轴的水平倾角越大，柱状电池单体内的电解液往低处流动的速度就越快。例如辊包括第一辊端211和第二辊端212，第一辊端211为辊左侧一段，第二辊端212为辊右侧一端，当两个辊端被调节为左高右低时，由于重力作用，柱状电池单体内的电解液会自左向右进行流动，保证柱状电池单体内部右侧得到充分浸润；反之，当两个辊端被调节为左低右高时，由于重力作用，柱状电池单体内的电解液会自右向左进行流动，保证柱状电池单体内部左侧得到充分浸润。
通过设置辊位置调节机构3来调节辊的高度位置，操作人员可以将辊的高度位置调节至适合其作业的高度，便于其在作业时对柱状电池单体进行取放。通过设置辊位置调节机构3来辊轴的水平倾角，在使用时可以先将辊轴设置为向一侧倾斜，此时电池单体内部的电解液会从高度较高的位置向高度较低的位置移动，保证电池单体内部一侧端部得到充分浸润。当浸润一段时间后，操作者可以通过辊位置调节机构3调节辊轴向另外一侧倾斜，保证电池单体内部另一侧端部也得到充分浸润。这样可以使得电池单体内部各个部位都能得到更加充分的浸润，覆盖电池单体内部所有可能出现的死角位置。
如图4-图6所示，在一些实施例中，辊位置调节机构3包括辊端升降单元31，辊端升降单元31连接辊的至少一辊端，并带动所连接的辊端升降。当辊端升降单元31只连接辊的一端时，辊端升降单元31通过控制与其连接的辊端的高度位置，实现对辊的高度位置或水平倾角的调节。当辊端升降单元31连接辊的两端时，通过辊端升降单元31可以调节与之连接的两个辊端的高度，当两个辊端的高度被调节到不同位置时，辊轴自然呈现一定的水平倾角。这样，通过辊端升降单元31与辊的至少一端连接来调节辊端的升降高度，可以快速地将辊端调节至某一高度，进而实现辊轴的水平倾角的快速调整。
在一些实施例中，辊端升降单元31包括第一辊端升降单元311与第二辊端升降单元312，第一辊端升降单元311与第二辊端升降单元312分别连接辊21的两端，并独立控制各自所连接的辊端的升降。通过设置第一辊端升降单元311与第二辊端升降单元312与辊的两端连接，当需要将辊轴倾斜设置时，只需通过第一辊端升降单元311与第二辊端升降单元312将辊的两端调节至不同高度即可，方便快捷地实现辊轴的水平倾角的调节。当需要将辊调节至预定高度时，可以直接通过第一辊端升降单元311与第二辊端升降单元312将相应辊端调节到预定高度即可。这样，既可以实现辊高度位置的快速调节，又可以实现辊轴的水平倾角的快速调节。
假设第一辊端升降单元311与辊21的左端连接，第二辊端升降单元312与辊21的右端连接，在浸润过程中，如图5所示，可以先通过第一辊端升降单元311将辊的左端抬高，使得辊的左端高度高于右端高度，柱状电池单体内的电解液由于重力作用会自左向右进行流动，保证柱状电池单体内部右侧得到充分浸润。当浸润一段时间后，如图6所示，可以再通过第一辊端升降单元311将辊的左端抬低或者通过第二辊端升降单元312将辊的右端抬高，使得辊的右端高度高于左端高度，柱状电池单体内的电解液由于重力作用会自右向左进行流动，从而使得柱状电池单体内部左侧得到充分浸润。如此反复，可以实现保证柱状电池单体内部的各个部位都得到充分浸润。
优选的，第一辊端升降单元311和第二辊端升降单元312可以是伸缩管、升降臂、高度调节块等，简言之，只要能够对辊端高度起到升降作用的机构，均在本实施例的保护范围内。
在一些实施例中，辊21为加热辊。加热辊为具有加热功能的辊，其内部设置有电热电芯，通过电热电芯可以对电池置放机构2上的柱状电池单体进行一定程度的加热，进而加速柱状电池单体内部电解液的流动，使得电解液可以更加快速地流向电池单体内部的各个部位，在提升电池浸润效率的同时，也可以使得电池单体内部的各个部位的浸润效果更佳均匀。
优选的，加热辊可以是电磁加热辊、导热油加热辊等。简言之，只要是具有加热功能的辊，均在本实施例的保护范围内。
在一些实施例中，如图7-图9所示，电池置放机构2包括端部固定结构22，端部固定结构22用于与柱状电池单体的一端可拆卸连接，并带动与之可拆卸连接的柱状电池单体转动。在使用过程中，可以先通过端部固定结构22对柱状电池单体的一端进行固定，而后端部固定结构22在转动过程中带动与之可拆卸连接的柱状电池单体转动，电池单体在绕柱轴转动过程中其内部的电解液会流动至电池单体内部的各个部位，从而有效提升电池的浸润效率。当浸润结束后，只需从端部固定结构22中取下浸润好的柱状电池单体即可，高效方便。
如图7所示，在使用时，可以先将待浸润的柱状电池单体5的一端通过端部固定结构进行固定，使得待浸润的柱状电池单体5与置放平面相对固定，而后在柱状电池单体5的上方设置传送带7，传送带7分别与待浸润的柱状电池单体5的表面相接触，而后驱动机构驱动传送带7向左或向右移动，进而在传送带7的作用下拨动多个待浸润的柱状电池单体5绕其柱轴转动，从而使得电池内的电解液流动，以使各个待浸润的柱状电池单体5得到充分浸润。例如在图7中，传送带7从右向左移动时，将驱动与之连接的多个待浸润的柱状电池单体5绕逆时针转动。
在一些实施例中，端部固定结构22与柱状电池单体的一端的可拆卸连接可以是夹紧连接，端部固定结构22可以采用夹爪、夹筒等，例如端部固定结构22为夹爪，在使用过程中通过控制夹爪的爪臂收紧使得与柱状电池单体的一端固定，进而取得夹爪转动以带动柱状电池单体转动，当浸润结束后，只需控制夹爪的爪臂松开取下柱状电池单体即可。在另一些实施例中，端部固定结构22与柱状电池单体的一端的可拆卸连接还可以采用过盈配合，在使用时两者通过过盈配合进行固定，在使用结束后可以直接取出。简言之，端部固定结构22是用于固定柱状电池单体的一端，并与柱状电池单体的一端可拆卸连接，只要满足这一功能的机构都在本实施例的保护范围内。
如图8和图9所示，在一些实施例中，柱状电池单体旋转浸润装置1还包括基座本体4，基座本体4上设置有多个用于放置柱状电池单体的容置结构41，容置结构41能够容置的区域面积大于柱状电池单体5的径向横截面积。在使用过程中，先通过端部固定结构22将柱状电池单体5的一端固定后，再将柱状电池单体5的另一端放置在容置结构41上，而后可以通过传送带7驱动端部固定结构22转动，端部固定结构22在转动过程中带动与之连接的柱状电池单体5转动，从而使得柱状电池单体5内的电解液得到充分浸润。在柱状电池单体5转动过程中，基座本体4上的容置结构41可以起到很好的限位作用，防止柱状电池单体5脱离端部固定结构22。当柱状电池单体5全部浸润完成后，只需拆下柱状电池单体5一端的端部固定结构22，此时柱状电池单体5的另一端仍然被置于容置结构41中，因而可以通过搬运基座本体4的方式来搬运浸润完成的多个柱状电池单体5，有效提升了搬运效率。
优选的，容置结构41为容置托盘，多个容置托盘阵列排布于基座本体4上，容置托盘与基座本体4可拆卸连接。通过将容置托盘与基座本体4可拆卸连接，当需要对不同尺寸的柱状电池单体5进行浸润时，可以将基座本体4上的容置托盘更换为与当前待浸润的柱状电池单体5的径向横截面相适配的尺寸，从而满足不同大小尺寸的柱状电池单体5的浸润需求。
优选的，容置托盘突出于基座本体的表面，容置托盘的高度为柱状电池单体5沿柱轴方向上总长度的1/4-1/2。这样，无论是在柱状电池单体5转动过程中还是在柱状电池单体5搬运过程中，容置托盘的四周可以起到一个护栏作用，防止柱状电池单体滑出预定区域，保证柱状电池单体浸润操作或柱状电池单体搬运操作的稳步进行。
当然在另一些实施例中，容置结构41还可以为容置槽，容置槽自基座本体4的表面向基座本体4的内部延伸，容置槽的深度优选为柱状电池单体5沿柱轴方向上总长度的1/4-1/2，容置槽的槽口面积略大于柱状电池单体5径向的横截面积。由于容置槽是设置于基座本体4内部的，相较于采用容置托盘来放置本体另一端的方式，可以有效提升空间利用率。
尽管在本文中已经对上述各实施例进行了描述，但并非因此限制本申请的专利保护范围。因此，基于本申请的创新理念，对本文实施例进行的变更和修改，或利用本申请说明书及附图内容所作的等效结构或等效流程变换，直接或间接地将以上技术方案运用在其他相关的技术领域，均包括在本申请专利的保护范围之内。

Claims (13)

  1. 一种柱状电池单体旋转浸润装置，其特征在于，包括：
    电池置放机构，所述电池置放机构用于以阵列形式放置待浸润的多个柱状电池单体；
    驱动机构，所述驱动机构与所述电池置放机构传动连接，并驱动所述电池置放机构带动所述柱状电池单体绕所述柱状电池单体的柱轴旋转。
  2. 如权利要求1所述的柱状电池单体旋转浸润装置，其特征在于，所述电池置放机构包括多个并排设置的辊；
    相邻的一对辊之间的凹部用于放置所述待浸润的柱状电池单体，相邻的一对辊中至少有一根辊为主动辊，所述主动辊与所述驱动机构传动连接，并在所述驱动机构的驱动下绕辊轴旋转。
  3. 如权利要求2所述的柱状电池单体旋转浸润装置，其特征在于，还包括：
    辊位置调节机构，用于调节辊的高度位置和/或辊轴的水平倾角。
  4. 如权利要求3所述的柱状电池单体旋转浸润装置，其特征在于，所述辊位置调节机构包括辊端升降单元，所述辊端升降单元连接所述辊的至少一辊端，并带动所连接的辊端升降。
  5. 如权利要求4所述的柱状电池单体旋转浸润装置，其特征在于，所述辊端升降单元包括第一辊端升降单元与第二辊端升降单元，所述第一辊端升降单元与所述第二辊端升降单元分别连接所述辊的两端，并独立控制各自所连接的辊端的升降。
  6. 如权利要求2至5任一项所述的柱状电池单体旋转浸润装置，其特征在于，所述辊为加热辊。
  7. 如权利要求1所述的柱状电池单体旋转浸润装置，其特征在于，所述电池置放机构包括端部固定结构，所述端部固定结构用于与所述柱状电池单体的一端可拆卸连接，并带动与之可拆卸连接的所述柱状电池单体转动。
  8. 如权利要求7所述的柱状电池单体旋转浸润装置，其特征在于，还包括：
    基座本体，所述基座本体上设置有多个用于放置柱状电池单体的容置结构，所述容置结构的区域面积大于所述柱状电池单体的径向横截面积。
  9. 如权利要求8所述的柱状电池单体旋转浸润装置，其特征在于，所述容置结构为容置托盘，多个所述容置托盘阵列排布于所述基座本体上，所述容置托盘与所述基座本体可拆卸连接。
  10. 如权利要求8或9所述的柱状电池单体旋转浸润装置，其特征在于，所述容置托盘突出于所述基座本体的表面，所述容置托盘的高度为所述柱状电池单体沿柱轴方向上总长度的1/4-1/2。
  11. 如权利要求8所述的柱状电池单体旋转浸润装置，其特征在于，所述容置结构为容置槽，所述容置槽自所述基座本体的表面向所述基座本体的内部延伸，所述容置槽的深度为所述柱状电池单体沿柱轴方向上总长度的1/4-1/2。
  12. 如权利要求7所述的柱状电池单体旋转浸润装置，其特征在于，所述电池置放机构还包括传送带，所述传送带设于所述柱状电池单体的上方，所述驱动机构可驱动所述传送带移动，所述传送带可拨动多个所述柱状电池单体绕所述柱状电池单体的柱轴转动。
  13. 如权利要求12所述的柱状电池单体旋转浸润装置，其特征在于，所述传送带用于驱动所述端部固定结构转动。
PCT/CN2022/120862 2021-10-09 2022-09-23 柱状电池单体旋转浸润装置 WO2023056846A1 (zh)

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