Lithium battery diaphragm heating device

Abstract

The utility model discloses a lithium battery diaphragm heating device and relates to the technical field of battery production. The device comprises a frame body, mounting plates are fixedly mounted in the middles of the upper end and the lower end of the frame body, lifting columns are symmetrically connected to the front side and the rear side of each mounting plate in a sliding mode, first springs are fixedly connected between the lower sides of the tops of the lifting columns and the mounting plates, and connecting plates are fixedly mounted at the adjacent ends of the lifting columns on the upper side and the lower side; threaded rods are symmetrically connected to the left side and the right side of the connecting plate in a threaded mode. The diaphragm heating device can heat the two surfaces of the diaphragm at the same time, the action temperature is kept the same, the diaphragm heating uniformity is improved, the diaphragm heating temperature is adaptively adjusted when the conveying speed of the diaphragm fluctuates, the heating uniformity is ensured, the diaphragm quality is improved, and meanwhile the diaphragm heating efficiency is improved when the conveying speed is adjusted in a small range. And the temperature of the heating plate does not need to be changed, so that the heating plate is more convenient and quicker.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production, in particular to a lithium battery diaphragm heating device. Background Art

[0002] Lithium batteries are batteries that use lithium metal or lithium alloy as anode materials and non-aqueous electrolyte solutions. They are widely used in daily life. Lithium battery separators are used in the production process of lithium batteries. Lithium battery separators are one of the key inner components in the lithium battery structure. Their main function is to separate the positive and negative electrodes of the battery to prevent the two electrodes from contacting and short-circuiting. In addition, they also have the function of allowing electrolyte ions to pass through. Lithium battery separators need to be heated during the production process.

[0003] During use, the existing lithium battery diaphragm heating device heats the lithium battery diaphragm during the process of winding and moving. In the short heating process, the single-sided heating easily leads to uneven heating of the diaphragm, and the heating speed cannot be adaptively adjusted according to the speed of diaphragm movement. Therefore, when the speed of diaphragm movement fluctuates due to external conditions, insufficient heating or overheating will occur, reducing the quality of the diaphragm. At the same time, when the diaphragm movement speed is slightly changed according to demand, the traditional heating device needs to readjust the temperature, which is cumbersome to operate. Utility Model Content

[0004] The purpose of the utility model is to solve the problems that the above-mentioned single-sided heating easily leads to uneven heating of the diaphragm, and the heating speed cannot be adaptively adjusted according to the speed of movement of the diaphragm, which easily leads to insufficient heating or overheating. When changing the movement speed of the diaphragm, the temperature needs to be readjusted, and the operation is cumbersome. The utility model provides a lithium battery diaphragm heating device.

[0005] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0006] A lithium battery diaphragm heating device comprises a frame, a mounting plate is fixedly installed in the middle of the upper and lower ends of the frame, and the front and rear sides of the mounting plate are symmetrically and slidably connected with lifting columns, a spring is fixedly connected between the lower side of the top of the lifting column and the mounting plate, a connecting plate is fixedly installed at one end adjacent to the lifting columns on the upper and lower sides, and the left and right sides of the connecting plate are symmetrically threaded with threaded rods, and the adjacent ends of the threaded rods on the upper and lower sides are limitedly and rotatably connected with heating plates, the middle parts of the left and right ends of the frame are transmission-connected with conveying rollers, and a diaphragm passes between the conveying rollers, a bending plate is fixedly installed on the left side of the front end of the frame, and a motor is fixedly installed on the front side of the bending plate, and the motor is transmission-connected with the conveying roller on the lower left end, and the middle parts of the front and rear ends of the frame are rotationally connected with a rotating shaft, and belts are transmission-connected between the rotating shafts on the front and rear sides and the conveying rollers on the lower left end, and a self-adjusting component is arranged on the side of the rotating shaft away from the frame, and the self-adjusting component is used to adjust the distance between the upper and lower heating plates and the diaphragm according to the rotation speed of the conveying roller on the lower left end, thereby realizing adaptive adjustment of the heating temperature.

[0007] Furthermore, a round cap with a diameter larger than that of the lifting column is provided at the top of the lifting column, and the spring is fixedly connected between the round cap and the mounting plate, so that the lifting column is elastically slidably connected, and the spring set is arranged on the periphery of the lifting column to ensure the stability of the extension and contraction of the spring.

[0008] Furthermore, the threaded rod passes through the connecting plate and is threadedly connected to the connecting plate. A turntable is fixedly mounted on the top of the threaded rod, and the bottom end is rotationally connected to the heating plate in a limited position. Therefore, the position of the heating plate can be adjusted by rotating the threaded rod.

[0009] Furthermore, the diaphragm is clamped between the left and right conveying rollers, and the diaphragm is located at the center between the upper and lower heating plates, with an equal distance from the upper and lower heating plates, so that the upper and lower heating plates have the same acting temperature on the diaphragm.

[0010] Furthermore, the self-adjusting component includes a fixed plate, a fixed plate is fixedly installed on one end of the rotating shaft away from the frame, a movable plate is sleeved between the fixed plate outside the rotating shaft and the frame, a second spring is fixedly connected between the fixed plate and the movable plate, the second spring is sleeved on the periphery of the rotating shaft, a counterweight block is transmission-connected between the fixed plate and the movable plate through a transmission rod, a slider is sleeved between the movable plate outside the rotating shaft and the frame, and the slider is rotationally connected to the movable plate in a limited position, connecting rods are fixedly installed on the left and right ends of the slider, and push rods are transmission-connected between the left and right sides of the connecting rod and the connecting plates on the upper and lower sides.

[0011] Furthermore, there are a total of five groups of combinations of transmission rods and counterweight blocks between a single fixed plate and a movable plate, which are evenly distributed on the outer side between the fixed plate and the movable plate. Two transmission rods are hinged on the inner side of a single counterweight block, and the other ends of the two transmission rods are symmetrical front to back and are respectively hinged to the fixed plate and the movable plate. Therefore, when the counterweight block moves outward or inward, the movable plate can be driven closer to or away from the fixed plate through the transmission rod.

[0012] Furthermore, the movable disk is convexly annular at one end close to the slider and is rotationally connected inside the slider in a limited position, so that the movable disk and the slider are rotationally connected in a limited position, so that the movable disk can rotate relative to the slider and drive the slider to move synchronously.

[0013] Furthermore, one end of the push rod is hinged on the periphery of the connecting rod, and the other end is symmetrically extended to the upper and lower sides, and is hinged to the connecting plates on the upper and lower sides. Therefore, when the slider drives the connecting rod to move forward and backward, the push rod can drive the connecting plates on the upper and lower sides to move closer to the middle or extend to the upper and lower sides.

[0014] The beneficial effects of the utility model are as follows:

[0015] 1. The utility model, through the design of the upper and lower connecting plates and the heating plates, and the synchronous adjustment of the connecting plates and the heating plates during the adjustment process, can make the upper and lower heating plates heat both sides of the diaphragm at the same time during the heating process, and keep the acting temperature the same, thereby improving the uniformity of heating the diaphragm.

[0016] 2. The utility model, through the design of the self-adjusting component, can automatically adjust the position of the heating plate through the transmission rod and the push rod when the rotation speed of the conveying roller changes. When the conveying speed becomes faster, the heating plates on the upper and lower sides are close to the diaphragm at the same time, and when the conveying speed becomes slower, the heating plates on the upper and lower sides are away from the diaphragm at the same time, thereby realizing adaptive adjustment of the heating temperature of the diaphragm when the conveying speed of the diaphragm fluctuates, ensuring the uniformity of heating and improving the quality of the diaphragm. At the same time, when the conveying speed is adjusted in a small range, adaptive adjustment can also be achieved without changing the temperature of the heating plate, which is more convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model Figure 2 ;

[0019] Figure 3 It is a schematic diagram of a partial three-dimensional structure of the utility model;

[0020] Figure 4 It is a schematic diagram of the partial planar structure of the utility model;

[0021] Figure 5 This is a schematic diagram of the three-dimensional structure of the self-adjusting component of the utility model;

[0022] Figure 6 It is a schematic diagram of the partial three-dimensional structure of the self-adjusting component of the utility model;

[0023] Figure 7 It is a schematic diagram of the three-dimensional structure of the heating plate installation of the utility model.

[0024] Figure numerals: 1. frame; 2. mounting plate; 3. lifting column; 4. spring one; 5. connecting plate; 6. threaded rod; 7. heating plate; 8. conveying roller; 9. diaphragm; 10. bending plate; 11. motor; 12. rotating shaft; 13. belt; 14. self-adjusting component; 141. fixed disk; 142. movable disk; 143. spring two; 144. transmission rod; 145. counterweight; 146. slider; 147. connecting rod; 148. push rod. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model.

[0026] A lithium battery diaphragm heating device according to a preferred embodiment of the present invention will be described in detail below. Figure 1-7As shown, a lithium battery diaphragm heating device comprises a frame 1, a mounting plate 2 is fixedly installed in the middle of the upper and lower ends of the frame 1, a lifting column 3 is symmetrically slidably connected to the front and rear sides of the mounting plate 2, a spring 4 is fixedly connected between the lower side of the top of the lifting column 3 and the mounting plate 2, a round cap with a diameter larger than that of the lifting column 3 is provided on the top of the lifting column 3, the spring 4 is fixedly connected between the round cap and the mounting plate 2, so that the lifting column 3 is elastically slidably connected, and the spring 4 is sleeved on the periphery of the lifting column 3 to ensure the stability of the expansion and contraction of the spring 4, a connecting plate 5 is fixedly installed at one end adjacent to the upper and lower lifting columns 3, the left and right sides of the connecting plate 5 are symmetrically threadedly connected to threaded rods 6, the adjacent ends of the upper and lower threaded rods 6 are limitedly rotatably connected to a heating plate 7, the middle part of the left and right ends of the frame 1 is transmission-connected to a conveying roller 8, and a diaphragm passes between the conveying rollers 8. 9, the diaphragm 9 is clamped between the left and right conveying rollers 8, and the diaphragm 9 is located in the central position between the upper and lower heating plates 7, and the spacing between the upper and lower heating plates 7 is equal, so that the upper and lower heating plates 7 have the same acting temperature on the diaphragm 9, a bending plate 10 is fixedly installed on the left side of the front end of the frame 1, and a motor 11 is fixedly installed on the front side of the bending plate 10, and the motor 11 is transmission-connected to the conveying roller 8 on the lower left end, and the middle limit rotation of the front and rear ends of the frame 1 is connected with a rotating shaft 12, and the front and rear rotating shafts 12 and the conveying roller 8 on the lower left end are both transmission-connected with belts 13, and a self-adjusting component 14 is arranged on the side of the rotating shaft 12 away from the frame 1, and the self-adjusting component 14 is used to adjust the spacing between the upper and lower heating plates 7 and the diaphragm 9 according to the rotation speed of the conveying roller 8 on the lower left end, thereby realizing adaptive adjustment of the heating temperature.

[0027] The threaded rod 6 passes through the connecting plate 5 and is threadedly connected to the connecting plate 5. A turntable is fixedly installed on the top of the threaded rod 6, and the bottom end is connected to the heating plate 7 for limited rotation. Therefore, by rotating the threaded rod 6, the position of the heating plate 7 can be adjusted.

[0028] The self-adjusting component 14 includes a fixed disk 141, and the fixed disk 141 is fixedly installed at one end of the rotating shaft 12 away from the frame 1. A movable disk 142 is sleeved between the fixed disk 141 and the frame 1 on the periphery of the rotating shaft 12, and a second spring 143 is fixedly connected between the fixed disk 141 and the movable disk 142. The second spring 143 is sleeved on the periphery of the rotating shaft 12. A counterweight 145 is connected between the fixed disk 141 and the movable disk 142 through a transmission rod 144. A slider 146 is sleeved between the movable disk 142 and the frame 1 on the periphery of the rotating shaft 12, and The slider 146 is connected to the movable disk 142 for limited rotation. The movable disk 142 is in a convex ring shape at one end close to the slider 146 and is connected to the inside of the slider 146 for limited rotation, so that the movable disk 142 and the slider 146 are connected for limited rotation, so that the movable disk 142 can rotate relative to the slider 146, and the movable disk 142 can also drive the slider 146 to move synchronously. Connecting rods 147 are fixedly installed on the left and right ends of the slider 146, and push rods 148 are transmission-connected between the left and right sides of the connecting rod 147 and the connecting plates 5 on the upper and lower sides.

[0029] There are five groups of combinations of transmission rods 144 and counterweights 145 between a single fixed plate 141 and a movable plate 142, which are evenly distributed on the outer side between the fixed plate 141 and the movable plate 142. Two transmission rods 144 are hinged on the inner side of a single counterweight 145. The other ends of the two transmission rods 144 are symmetrical front to back and are hinged to the fixed plate 141 and the movable plate 142 respectively. Therefore, when the counterweight 145 moves outward or inward, the movable plate 142 can be driven to approach or move away from the fixed plate 141 through the transmission rod 144.

[0030] One end of the push rod 148 is hinged on the periphery of the connecting rod 147, and the other end is symmetrically extended to the upper and lower sides, and is hinged to the connecting plates 5 on the upper and lower sides. Therefore, when the slider 146 drives the connecting rod 147 to move forward and backward, the push rod 148 can drive the connecting plates 5 on the upper and lower sides to move closer to the middle or extend to the upper and lower sides.

[0031] The working principle of the utility model is:

[0032] During normal heating, the diaphragm 9 passes between the conveying rollers 8 on the left and right sides, and the motor 11 drives the conveying roller 8 on the left side to rotate, so that the conveying roller 8 on the left side forms a driving wheel and the conveying roller 8 on the right side forms a driven wheel, so as to achieve stable conveyance of the diaphragm 9. During the conveying process, the heating plates 7 equidistant on the upper and lower sides of the diaphragm 9 in the frame 1 can evenly heat both sides of the diaphragm 9.

[0033] When the rotation speed of the conveying roller 8 driven by the motor 11 fluctuates, which in turn causes the speed of the conveying diaphragm 9 to fluctuate, the rotation of the conveying roller 8 can drive the rotating shafts 12 on the front and rear sides of the frame 1 to rotate synchronously through the belt 13. Therefore, when the rotation speed of the conveying roller 8 becomes faster, the rotation speed of the rotating shaft 12 will also become faster. Through the fixed installation of the fixed plate 141 and the rotating shaft 12, and the design of the counterweight block 145 connected to the fixed plate 141 and the movable plate 142 through the transmission rod 144, the speed of the counterweight block 145 will also become faster, and the counterweight block 145 will move outward under the action of centrifugal force, and then the movable plate 142 will be driven to move to the side close to the fixed plate 141 through the action of the transmission rod 144. The sliding block 146 will also be driven to move to the side close to the fixed plate 141 through the limited rotation connection between the movable plate 142 and the sliding block 146, thereby driving the connecting rods 147 fixedly installed on the left and right sides to move to both sides, and on the front and rear sides During the movement of the connecting rod 147 to both sides, the push rod 148 can drive the connecting plates 5 on the upper and lower sides to compress the spring 144 to move toward the side close to the diaphragm 9, thereby driving the heating plate 7 to approach the diaphragm 9 at the same time, so as to increase the temperature of the heating plate 7 on the diaphragm 9 when the conveying speed of the diaphragm 9 becomes faster. On the contrary, when the conveying speed becomes slower, the centrifugal force exerted on the counterweight 145 decreases, and the movable plate 142 moves to the side away from the fixed plate 141 under the action of the restoring force of the spring 143. At the same time, the lifting column 3 will also drive the connecting plate 5 and the heating plate 7 to move to the side away from the diaphragm 9 under the action of the restoring force of the spring 144, thereby reducing the temperature of the heating plate 7 on the diaphragm 9 when the conveying speed of the diaphragm 9 becomes slower. Therefore, when the conveying speed of the diaphragm 9 fluctuates, the heating temperature of the diaphragm 9 is adaptively adjusted, the uniformity of heating is ensured, the quality of the diaphragm 9 is improved, and when the conveying speed is adjusted in a small range, adaptive adjustment can also be achieved without changing the temperature of the heating plate 7, which is more convenient and quick.

[0034] When the required heating temperature range varies greatly for diaphragms 9 made of different materials, the initial position of the heating plate 7 can be adjusted by rotating the threaded rod 6 to meet the needs of diaphragms 9 made of different materials.

[0035] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A lithium battery diaphragm heating device, comprising a frame (1), characterized in that: A mounting plate (2) is fixedly installed in the middle of the upper and lower ends of the frame (1), and lifting columns (3) are symmetrically slidably connected to the front and rear sides of the mounting plate (2), and a spring (4) is fixedly connected between the lower side of the top of the lifting column (3) and the mounting plate (2). A connecting plate (5) is fixedly installed at the adjacent ends of the lifting columns (3) on the upper and lower sides, and threaded rods (6) are symmetrically threadedly connected to the left and right sides of the connecting plate (5), and heating plates (7) are limitedly rotatably connected to the adjacent ends of the threaded rods (6) on the upper and lower sides. The middle of the left and right ends of the frame (1) is drivingly connected to conveying rollers (8), and a diaphragm (9) passes through between the conveying rollers (8). The left side of the front end of the frame (1) is fixedly A bending plate (10) is fixedly installed, and a motor (11) is fixedly installed on the front side of the bending plate (10), and the motor (11) is connected to the conveying roller (8) at the lower left end in a transmission manner. The middle parts of the front and rear ends of the frame (1) are connected to a rotating shaft (12) in a limited rotation manner, and belts (13) are connected to the rotating shaft (12) and the conveying roller (8) at the lower left end on both the front and rear sides. A self-adjusting component (14) is provided on the side of the rotating shaft (12) away from the frame (1), and the self-adjusting component (14) is used to adjust the distance between the upper and lower heating plates (7) and the diaphragm (9) according to the rotation speed of the conveying roller (8) at the lower left end, thereby realizing adaptive adjustment of the heating temperature.

2. The lithium battery diaphragm heating device according to claim 1, characterized in that: The top of the lifting column (3) is provided with a round cap with a diameter larger than the diameter of the lifting column (3); the spring one (4) is fixedly connected between the round cap and the mounting plate (2); and the spring one (4) is sleeved on the periphery of the lifting column (3).

3. The lithium battery diaphragm heating device according to claim 1, characterized in that: The threaded rod (6) passes through the connecting plate (5) and is threadedly connected to the connecting plate (5). A rotating disk is fixedly mounted on the top of the threaded rod (6), and the bottom end is rotationally connected to the heating plate (7) in a limited manner.

4. The lithium battery diaphragm heating device according to claim 1, characterized in that: The diaphragm (9) is clamped between the left and right conveying rollers (8), and the diaphragm (9) is located at the center between the upper and lower heating plates (7) and is equidistant from the upper and lower heating plates (7).

5. The lithium battery diaphragm heating device according to claim 1, characterized in that: The self-adjusting component (14) comprises: A fixed disk (141), the fixed disk (141) being fixedly mounted on one end of the rotating shaft (12) away from the frame (1); A movable disk (142), wherein the movable disk (142) is sleeved between the fixed disk (141) outside the rotating shaft (12) and the frame (1); Spring 2 (143), wherein the fixed disk (141) and the movable disk (142) are fixedly connected with spring 2 (143), and the spring 2 (143) is sleeved on the periphery of the rotating shaft (12); A transmission rod (144) and a counterweight (145), wherein the fixed plate (141) and the movable plate (142) are connected to each other via the transmission rod (144) and a counterweight (145); A slider (146), wherein the slider (146) is sleeved between the outer movable disk (142) of the rotating shaft (12) and the frame (1), and the slider (146) is connected to the movable disk (142) in a limited rotation manner; A connecting rod (147), the left and right ends of the slider (146) are fixedly mounted with the connecting rod (147); A push rod (148) is provided in transmission connection between the left and right sides of the connecting rod (147) and the connecting plates (5) on the upper and lower sides.

6. The lithium battery diaphragm heating device according to claim 5, characterized in that: There are five groups of transmission rods (144) and counterweights (145) between the fixed plate (141) and the movable plate (142), which are evenly distributed on the outer side between the fixed plate (141) and the movable plate (142). Two transmission rods (144) are hingedly connected to the inner side of the counterweight (145). The other ends of the two transmission rods (144) are front-to-back symmetrical and are hingedly connected to the fixed plate (141) and the movable plate (142) respectively.

7. The lithium battery diaphragm heating device according to claim 5, characterized in that: The end of the movable disk (142) close to the slider (146) is in a convex ring shape and is connected to the inside of the slider (146) in a limited rotation manner, so that the movable disk (142) and the slider (146) are connected in a limited rotation manner.

8. The lithium battery diaphragm heating device according to claim 5, characterized in that: One end of the push rod (148) is hinged to the periphery of the connecting rod (147), and the other end is symmetrically extended to the upper and lower sides and hinged to the connecting plates (5) on the upper and lower sides.

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