Search

CN-122008457-A - Roller type preheating device for processing lithium battery diaphragm

CN122008457ACN 122008457 ACN122008457 ACN 122008457ACN-122008457-A

Abstract

The invention discloses a roller type preheating device for processing a lithium battery diaphragm, which relates to the technical field of diaphragm preheating and comprises a frame, wherein a preheating roller for conveying the diaphragm is arranged in an inner cavity of the frame, the preheating roller is arranged in the inner cavity of the frame in an up-down staggered manner, a servo motor is fixed on one side of the frame, the roller type preheating of self-adaptive gradient temperature control, uniform heat exchange and stable temperature control of the lithium battery diaphragm is realized, the diaphragm preheating precision and the processing stability are greatly improved, the processing requirements of the lithium battery diaphragm are met, the preheating roller is uniformly heated in the circumferential direction, the problem of local overheating or uneven preheating is avoided, the diaphragm preheating consistency is ensured, the switching of a heating-cooling mode is automatically completed, meanwhile, the gradient heating and gradient cooling of a large flow in the front section and a small flow in the rear section are realized by a linkage hot oil valve and a cold water valve, the rapid temperature rising and cooling efficiency is ensured, the diaphragm is prevented from being damaged by abrupt temperature change, the temperature control is high efficiency and the response is rapid, the medium mixed flow is effectively prevented, and the system operation is ensured to be stable.

Inventors

  • XIONG DAWEI
  • XU WEI
  • CHEN QUAN

Assignees

  • 南京力步机械有限公司

Dates

Publication Date
20260512
Application Date
20260414

Claims (10)

  1. 1. A roller type preheating device for processing a lithium battery diaphragm is characterized by comprising, The device comprises a frame (1), wherein the inner cavity of the frame (1) is provided with a preheating roller (3) for conveying the diaphragm, the preheating roller (3) is arranged in the inner cavity of the frame (1) in an up-down staggered way, A servo motor (2) fixed on one side of the frame (1) and used for driving the preheating roller (3) to rotate, the output end of the servo motor is fixed on one end of the preheating roller (3), A preheating component (8) arranged on the preheating roller (3) and comprising, A preheating piece (81) arranged in the inner cavity of the preheating roller (3), An oil-water supply member (82) provided on the surface of the preheating roller (3), A rotating shell (85) arranged in the inner cavity of the preheating roller (3), Teeth (86) fixed on the outer ring of one side of the rotary shell (85), The oil-water supply part (82) provides a flow channel for heat conduction oil and cooling water, and the preheating part (81) preheats the preheating roller (3) in a heat conduction oil heating and cooling water cooling mode.
  2. 2. The roller type preheating device for processing the lithium battery diaphragm is characterized in that one side of a frame (1) is rotationally connected with an arc roller (4) for adjusting a diaphragm inlet angle, an inner cavity of the frame (1) is provided with a compression roller (5) for adjusting diaphragm tension, the compression roller is respectively positioned at the top and the bottom of a preheating roller (3), two sides of the inner cavity of the frame (1) are rotationally connected with air cylinders (7), telescopic ends of the air cylinders (7) are rotationally connected with connecting plates (6), the connecting plates (6) are rotationally connected to the top of the frame (1), and two ends of the compression roller (5) are rotationally connected to the connecting plates (6) at two sides.
  3. 3. The roller preheating device for processing lithium battery separator according to claim 1, wherein the preheating member (81) comprises: a heat-insulating roller (811) arranged in the inner cavity of the preheating roller (3), A bidirectional screw (814) arranged in the inner cavity of the heat insulation roller (811), wherein two sides of the surface of the bidirectional screw are provided with symmetrical threads with opposite rotation directions, Threaded sleeves (817) are symmetrically arranged at two ends of the bidirectional screw rod (814), A first strut 818 rotatably connected to the outer race of the threaded sleeve 817, which is provided in four sets, The second supporting rod (8110) is rotationally connected with the outer ring of the thread sleeve (817) and is arranged in a staggered manner with the first supporting rod (818), A heating plate (812) rotatably connected to one end of the first pole (818), A cooling plate (813) rotatably connected to one end of the second strut (8110), The first torsion spring (815) is sleeved at one end of the bidirectional screw rod (814), one end of the first torsion spring is fixed on the inner wall of the heat insulation roller (811), the other end of the first torsion spring is fixed on the surface of the bidirectional screw rod (814), The driving gear (816) is sleeved at the other end of the bidirectional screw rod (814), A first hose (819) provided at both ends of the heating plates (812) for communicating the adjacent two heating plates (812), And second hoses (8111) provided at both ends of the cooling plates (813) for communicating the adjacent two cooling plates (813).
  4. 4. The roller type preheating device for processing lithium battery diaphragms according to claim 3, wherein the heating plate (812) and the cooling plate (813) are arranged in an arc-shaped structure and are arranged on the outer ring of the heat insulation roller (811), and the outer surfaces of the heating plate (812) and the cooling plate (813) are slidably connected to the inner wall of the preheating roller (3).
  5. 5. The roller type preheating device for processing lithium battery separator according to claim 3 or 4, wherein a plurality of partitions for separating a heating plate (812) and a cooling plate (813) are provided on the outer circumference of the preheating roller (3), and circular baffles sliding on the inner wall of the preheating roller (3) are provided on both ends of the heat insulating roller (811).
  6. 6. The roll preheating device for processing lithium battery separator according to claim 5, wherein the oil-water supply member (82) comprises: A cover shell (821) fixed at one end of the inner cavity of the preheating roller (3), the inner cavity of the cover shell (821) is divided into a cooling cavity and a heating cavity, A water wheel (822) rotatably connected in two chambers of the inner cavity of the housing (821), An oil inlet pipe (823) communicated with one side of the top of the housing (821) and positioned at the top of the heating cavity, A hot oil valve (826) mounted on the surface of the oil inlet pipe (823), An oil inlet sleeve ring (824) fixed at the oil inlet end of the oil inlet pipe (823), A water inlet pipe (827) communicated with the other side of the top of the housing (821) and positioned at the top of the cooling cavity, A cold water valve (828) arranged on the surface of the water inlet pipe (827), A water inlet collar (825) fixed at the water inlet end of the water inlet pipe (827), A second torsion spring (829) respectively sleeved on the valve rods of the hot oil valve (826) and the cold water valve (828), The sector gear (8210) is fixed to the rotation shaft of the water wheel (822) and is located outside the housing (821).
  7. 7. The roller preheating device for processing lithium battery separator according to claim 3, wherein the heat-sensitive member (83) is provided on the surface of the heat-insulating roller (811), and the heat-sensitive member (83) comprises: A temperature-sensitive alloy (831) fixed on the outer ring of one side of the heat-insulating roller (811), the outer ring of which is slidingly connected to the inner wall of the preheating roller (3), A toothed plate (833) fixed on the deformed end of the temperature-sensitive alloy (831), And a pressing plate (832) fixed to one side of the toothed plate (833).
  8. 8. The roller type preheating device for processing lithium battery separator according to claim 3 or 7, wherein the outer ring of the heat-insulating roller (811) is provided with a moving hole (8112), and the heat-insulating roller (811) is rotatably connected to one end of the inner cavity of the preheating roller (3) through a bearing.
  9. 9. The roller type preheating device for processing lithium battery diaphragms according to claim 1, wherein an adjusting member (84) is provided in an inner cavity of the preheating roller (3), and the adjusting member (84) comprises: an air bag frame (841) fixed on one side of the top of the inner cavity of the preheating roller (3), An arc-shaped air bag (842) fixed in the inner cavity of the air bag frame (841), A sleeve (843) communicated with one side of the arc-shaped air bag (842), A piston compression bar (844) which is connected with the inner wall of the sleeve (843) in a sliding way, A spring (845) sleeved on the outer ring of the piston press rod (844), one end of the spring is fixed on the surface of the piston press rod (844), the other end of the spring is fixed on the inner wall of the sleeve (843), A pressing plate (846) fixed at the bottom of the piston compression bar (844), And the limiting rods (847) are fixed on two sides of the bottom of the air bag frame (841), and the limiting rods (847) penetrate through the pressing plate (846) and are connected with the connecting parts in a sliding mode.
  10. 10. The roller type preheating device for processing the lithium battery diaphragm according to claim 9, wherein a plugging piece (87) is arranged between the oil inlet pipe (823) and the water inlet pipe (827), and the plugging piece (87) comprises: A connecting pipe (871) communicated between the oil inlet pipe (823) and the water inlet pipe (827), A blocking column (872) which is connected with the inner cavity of the connecting pipe (871) in a sliding way, The elastic piece (873) is fixed in the inner cavity of the connecting pipe (871), and one side of the elastic piece (873) is fixed on the inner wall of the plugging column (872).

Description

Roller type preheating device for processing lithium battery diaphragm Technical Field The invention relates to the technical field of diaphragm preheating, in particular to a roller type preheating device for processing a lithium battery diaphragm. Background The roller type preheating device for processing the diaphragm of the lithium battery is core process equipment for realizing online preheating of the diaphragm, eliminating internal stress and guaranteeing stretching flatness and dimensional stability of the diaphragm in a diaphragm production line of the lithium battery, and more stringent requirements are put forward on temperature controllability, heat exchange uniformity and self-adaptive adjustment capability of the diaphragm preheating process along with the development of the lithium battery to the high safety and high consistency direction. At present, traditional diaphragm preheating roller adopts single steam or fixed heating of conduction oil more, does not have the cold and hot automatic switch-over structure of mechanical linkage formula, and the heating process temperature rising rate is uncontrollable, and the easy too fast thermal fold of diaphragm that leads to of rising temperature, shrinkage deformation, unable rapid cooling again after the temperature overshoot, the temperature fluctuation range is big, is difficult to stably maintain the technology and sets for temperature interval, and heating element and cooling element are fixed arrangement, can't be according to the laminating degree of real-time temperature self-adaptation adjustment with the roll body inner wall, and the heat transfer region is fixed, easily causes roll surface local overheating or heat transfer blind area. Disclosure of Invention This section is intended to outline some aspects of embodiments of the application and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description of the application and in the title of the application, which may not be used to limit the scope of the application. The present invention has been made in view of the above-mentioned and/or problems occurring in the conventional roller preheating device for processing a lithium battery separator. Therefore, the invention aims to solve the problems that the temperature rising rate in the heating process is uncontrollable, the temperature cannot be quickly reduced after the temperature is overshot, the fitting degree with the inner wall of the roller body cannot be adaptively adjusted according to the real-time temperature, and the heat exchange area is fixed. The invention provides a roller type preheating device for processing a lithium battery diaphragm, which comprises a frame, wherein a preheating roller for conveying the diaphragm is arranged in an inner cavity of the frame, the preheating roller is arranged in the inner cavity of the frame in an up-down staggered mode, a servo motor is fixed on one side of the frame and used for driving the preheating roller to rotate, the output end of the servo motor is fixed on one end of the preheating roller, a preheating component is arranged on the preheating roller and comprises a preheating piece, an inner cavity arranged on the preheating roller, an oil-water providing piece, a rotating shell, an inner cavity arranged on the preheating roller, teeth and an outer ring fixed on one side of the rotating shell, wherein the oil-water providing piece provides a flow channel for heat conduction oil and cooling water, and the preheating piece preheats the preheating roller in a heat conduction oil heating and cooling water cooling mode. As a preferable scheme of the roller type preheating device for processing the lithium battery diaphragm, one side of a frame is rotationally connected with an arc roller for adjusting a diaphragm inlet angle, an inner cavity of the frame is provided with a compression roller for adjusting diaphragm tension, the compression roller is respectively positioned at the top and the bottom of the preheating roller, two sides of the inner cavity of the frame are rotationally connected with air cylinders, telescopic ends of the air cylinders are rotationally connected with connecting plates, the connecting plates are rotationally connected to the top of the frame, and two ends of the compression roller are rotationally connected to the connecting plates at two sides respectively. The invention relates to a roller type preheating device for processing lithium battery diaphragms, which comprises a heat insulation roller, a bidirectional screw rod, a symmetrical screw thread sleeve, a first supporting rod, four groups of second supporting rods, a cooling plate, a first torsional spring, a driving gear, a first hose and a second hose, wherein the heat insulation roller is arranged in an inner cavity of the heat insulation roller, the bidirectional screw rod is arranged in the inner cavity of the