A lithium battery negative electrode tabletting device

Abstract

The utility model discloses a kind of lithium battery negative electrode tabletting device, including base frame, lower fixed roller, upper adjusting roller and power device, the lower fixed roller, upper adjusting roller and power device are installed on base frame, the power device is connected with lower fixed roller transmission, including left detection device and right detection device and with the both ends of upper adjusting roller cooperation and be installed on base frame;The left detection device and right detection device all include fixed plate, upper detection device and middle detection device, the detection device and middle detection device are symmetrically installed on fixed plate, fixed plate is opened with the transition hole of pressure roller for lower fixed roller and upper adjusting roller to pass through;A kind of lithium battery negative electrode tabletting device of the utility model, its simple structure, it is convenient and practical to detect the both ends of lower fixed roller and upper adjusting roller by detection device, so that lower fixed roller and upper adjusting roller end portion can be quickly detected when displacement occurs, reach the purpose of quickly detecting lower fixed roller and upper adjusting roller working displacement.

Description

Technical Field

[0001] This utility model belongs to the field of lithium battery negative electrode pressing technology, specifically relating to a lithium battery negative electrode pressing device. Background Technology

[0002] With the development of the new energy industry, the demand for lithium batteries in electronic devices, electric vehicles, and energy storage power stations has surged. The high requirements of these applications for lithium batteries' range, charge / discharge efficiency, and cycle life are driving continuous optimization of anode materials and manufacturing processes. Traditional lithium battery anode pressing machines have shortcomings in pressure control precision, electrode thickness uniformity, thickness adjustment adaptability, and production efficiency. Thickness adjustment adaptability, in particular, changes over long periods of operation. To ensure the stability of anode thickness production, real-time monitoring of the pressing machine's rollers is necessary. Therefore, we provide a lithium battery anode pressing device to solve the aforementioned technical problems. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a lithium battery negative electrode pressing device, which has a simple structure and is convenient and practical. The detection device detects the two ends of the lower fixed roller and the upper adjusting roller, so that the displacement of the ends of the lower fixed roller and the upper adjusting roller can be detected quickly, thereby achieving the purpose of quickly detecting the working displacement of the lower fixed roller and the upper adjusting roller.

[0004] A lithium battery negative electrode pressing device includes a base frame, a lower fixed roller, an upper adjusting roller, and a power unit. The lower fixed roller, upper adjusting roller, and power unit are mounted on the base frame. The power unit is drivenly connected to the lower fixed roller. It includes a left detection device and a right detection device mounted on the base frame and cooperating with both ends of the upper adjusting roller. Each left and right detection device includes a fixed plate, an upper detection device, and a middle detection device. The detection devices are symmetrically mounted on the fixed plate. The fixed plate has pressure roller transition holes for the lower fixed roller and upper adjusting roller to pass through. Each detection device includes a fixed frame, an adjusting screw, a slide, a detection bearing, a detection groove, and a limit switch. The fixed frame is connected to the fixed plate. The slide is slidably connected to the fixed frame and connected to the detection bearing. The adjusting screw is connected to the fixed frame and movably connected to the slide. The detection groove is formed on the detection bearing. The limit switch is connected to the fixed frame and cooperates with the detection bearing.

[0005] Preferably, the detection device includes a left adjustment device, a detection bar, and a right adjustment device. The left adjustment device is connected to the right adjustment device via the detection bar. Both the left and right adjustment devices include a fixed block, an adjusting bolt, an L-shaped slider, a spring, a clamping slider, and a detection sensor. The L-shaped slider is slidably connected to the fixed block. The adjusting bolt is connected to the fixed block and its one end is movably connected to the L-shaped slider. The clamping slider is slidably connected to one end of the L-shaped slider. The spring is connected between the other end of the L-shaped slider and the clamping slider. The detection sensor is connected to the L-shaped slider and cooperates with the clamping slider.

[0006] Preferably, the detection strip includes a copper sheet and a steel strip, wherein the copper sheet is welded to one side of the steel strip and cooperates with the upper adjusting roller.

[0007] Preferably, the copper sheet has wear-resistant grooves.

[0008] Preferably, the fixed plate is provided with two detection devices, which are respectively cooperated with the lower fixed roller and the upper adjusting roller.

[0009] Beneficial effects:

[0010] (1) The present invention provides a lithium battery negative electrode pressing device, which is simple in structure, convenient and practical. The detection device detects the two ends of the lower fixed roller and the upper adjusting roller, so that the displacement of the ends of the lower fixed roller and the upper adjusting roller can be detected quickly, thereby achieving the purpose of quickly detecting the working displacement of the lower fixed roller and the upper adjusting roller.

[0011] (2) The lithium battery negative electrode pressing device of this utility model ensures the horizontality of the copper sheet by means of steel strips, so that the upper adjusting roller can quickly drive the detection strip to move after displacement, so that the detection sensor can quickly detect the effect of the change in the thickness of the battery negative electrode pressing. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the tablet compression device;

[0013] Figure 2 This is a schematic diagram of the left detection device;

[0014] 1-Base frame, 2-Lower fixed roller, 3-Upper adjusting roller, 4-Left detection device, 41-Fixed plate, 42-Pressure roller transition hole, 43-Detection device, 44-Middle detection device, 45-Fixed frame, 46-Adjusting screw, 47-Slide carriage, 48-Detection bearing, 49-Detection groove, 410-Left adjusting device, 411-Detection strip, 412-Right adjusting device, 413-Fixed block, 414-Adjusting bolt, 415-L-shaped slider, 416-Spring, 417-Clamping slider, 418-Detection sensor, 419-Copper sheet, 420-Steel strip, 5-Right detection device. Detailed Implementation

[0015] The embodiments of this utility model are further described below with reference to the accompanying drawings.

[0016] Example 1

[0017] like Figures 1 to 2 As shown; a lithium battery negative electrode pressing device includes a base frame 1, a lower fixed roller 2, an upper adjusting roller 3, and a power unit. The lower fixed roller 2, the upper adjusting roller 3, and the power unit are mounted on the base frame 1. The power unit is drivenly connected to the lower fixed roller 2. It includes a left detection device 4 and a right detection device 5 mounted on the base frame 1 and cooperating with both ends of the upper adjusting roller 3. Each of the left and right detection devices 4 and 5 includes a fixed plate 41, an upper detection device 43, and a middle detection device 44. The detection devices 43 and 44 are symmetrically mounted on the fixed plate 41. A pressure roller transition hole 42 is provided for the lower fixed roller 2 and the upper adjusting roller 3 to pass through. The detection device 43 includes a fixed frame 45, an adjusting screw 46, a slide 47, a detection bearing 48, a detection groove 49, and a limit switch. The fixed frame 45 is connected to a fixed plate 41. The slide 47 is slidably connected to the fixed frame 45 and connected to the detection bearing 48. The adjusting screw 46 is connected to the fixed frame 45 and movably connected to the slide 47. The detection groove 49 is formed on the detection bearing 48. The limit switch is connected to the fixed frame 45 and cooperates with the detection bearing 48. The intermediate detection device... The device 44 includes a left adjustment device 410, a detection strip 411, and a right adjustment device 412. The left adjustment device 410 is connected to the right adjustment device 412 via the detection strip 411. Both the left adjustment device 410 and the right adjustment device 412 include a fixing block 413, an adjusting bolt 414, an L-shaped slider 415, a spring 416, a clamping slider 417, and a detection sensor 418. The L-shaped slider 415 is slidably connected to the fixing block 413. The adjusting bolt 414 is connected to the fixing block 413 and one end is movably connected to the L-shaped slider 415. The clamping slider 416... 17 is slidably connected to one end of the L-shaped slider 415, the spring 416 is connected between the other end of the L-shaped slider 415 and the clamping slider 417, the detection sensor 418 is connected to the L-shaped slider 415 and cooperates with the clamping slider 417; the detection strip 411 includes a copper sheet 419 and a steel strip 420, the copper sheet 419 is welded to one side of the steel strip 420 and cooperates with the upper adjusting roller 3; a wear-resistant groove is opened on the copper sheet 419; two detection devices 43 are provided on the fixed plate 41, and the two detection devices 43 cooperate with the lower fixed roller 2 and the upper adjusting roller 3 respectively.

[0018] In this process, the lower fixed roller 2 is driven to rotate by a power device. The lower fixed roller 2, upper adjusting roller 3, and power device are existing technologies and will not be elaborated upon here. Specifically, when detecting the working state of the lower fixed roller 2 and upper adjusting roller 3, when the lower fixed roller 2 and upper adjusting roller 3 are pressing the lithium battery negative electrode sheet, the pressure applied to the negative electrode sheet will cause it to experience a reaction force. When the lower fixed roller 2 and upper adjusting roller 3 move in the opposite direction due to the reaction force, they will contact the detection bearing 48. After contact, the detection bearing 48 will roll along with the lower fixed roller 2 or upper adjusting roller 3. After the detection bearing 48 rolls, its detection groove 49 will make contact with the limit switch to complete the detection. The moving distance of the lower fixed roller 2 or upper adjusting roller 3 can be controlled within the range of the lithium battery negative electrode sheet. Within the effective thickness range, excessive movement distance will directly lead to excessive thickness of the lithium battery negative electrode sheet, resulting in product defects. The contact distance between the detection bearing 48 and the lower fixed roller 2 or upper adjusting roller 3 is adjusted by rotating the adjusting screw 46 to avoid excessive displacement of the lower fixed roller 2 or upper adjusting roller 3 during operation, which would cause the sheet to be processed and pressed into defects. When the upper adjusting roller 3 descends, it will contact the copper sheet 419, causing the copper sheet 419 to receive a contact pull force, which will drive the steel strip 420 to move. The steel strip 420 will drive the clamping sliders 417 at both ends to move. At this time, the springs 416 on both sides will stretch or contract, so that the detection sensor 418 will sense the movement of the clamping sliders 417, thus realizing the purpose of detecting the descent of the upper adjusting roller 3. Wear-resistant grooves are set to prevent slippage between the upper adjusting roller 3 and the copper sheet 419.

[0019] The specific embodiments of this utility model have been described in detail above, but they are merely examples, and this utility model is not limited to the specific embodiments described above. For those skilled in the art, any equivalent modifications and substitutions to this utility model are also within the scope of this utility model. Therefore, all equivalent changes and modifications made without departing from the spirit and scope of this utility model are covered within the scope of this utility model.

Claims

1. A lithium battery negative electrode pressing device, comprising a base frame (1), a lower fixed roller (2), an upper adjusting roller (3), and a power unit, wherein the lower fixed roller (2), the upper adjusting roller (3), and the power unit are mounted on the base frame (1), and the power unit is drively connected to the lower fixed roller (2), characterized in that: It includes a left detection device (4) and a right detection device (5) mounted on a base frame (1) and cooperating with both ends of the upper adjusting roller (3); each of the left detection device (4) and the right detection device (5) includes a fixed plate (41), an upper detection device (43) and a middle detection device (44), the detection devices (43) and the middle detection device (44) are symmetrically mounted on the fixed plate (41), the fixed plate (41) is provided with a pressure roller transition hole (42) for the lower fixed roller (2) and the upper adjusting roller (3) to pass through, and the detection device (43) includes a fixed plate (44) with a fixed plate (41) and a right detection device (5) mounted on a base frame (1) and cooperating with both ends of the upper adjusting roller (3); the left detection device (4) and the right detection device (5) each include a fixed plate (41), an upper detection device (43) and a middle detection device (44), the detection devices (43) and the right detection device (5) are ... The system includes a fixed frame (45), an adjusting screw (46), a slide (47), a detection bearing (48), a detection groove (49), and a limit switch. The fixed frame (45) is connected to a fixed plate (41). The slide (47) is slidably connected to the fixed frame (45) and connected to the detection bearing (48). The adjusting screw (46) is connected to the fixed frame (45) and movably connected to the slide (47). The detection groove (49) is opened on the detection bearing (48). The limit switch is connected to the fixed frame (45) and cooperates with the detection bearing (48).

2. The lithium battery negative electrode pressing device as described in claim 1, characterized in that: The detection device (44) includes a left adjustment device (410), a detection strip (411), and a right adjustment device (412). The left adjustment device (410) is connected to the right adjustment device (412) via the detection strip (411). Both the left adjustment device (410) and the right adjustment device (412) include a fixing block (413), an adjusting bolt (414), an L-shaped slider (415), a spring (416), a clamping slider (417), and a detection sensor (418). The L-shaped slider (415) is slidably connected to the fixed block (413). The adjusting bolt (414) is connected to the fixed block (413) and one end is movably connected to the L-shaped slider (415). The clamping slider (417) is slidably connected to one end of the L-shaped slider (415). The spring (416) is connected between the other end of the L-shaped slider (415) and the clamping slider (417). The detection sensor (418) is connected to the L-shaped slider (415) and cooperates with the clamping slider (417).

3. The lithium battery negative electrode pressing device as described in claim 2, characterized in that: The detection strip (411) includes a copper sheet (419) and a steel strip (420), wherein the copper sheet (419) is welded to one side of the steel strip (420) and cooperates with the upper adjusting roller (3).

4. The lithium battery negative electrode pressing device as described in claim 3, characterized in that: Wear-resistant grooves are provided on the copper sheet (419).

5. A lithium battery negative electrode pressing device as described in claim 1 or 4, characterized in that: Two detection devices (43) are provided on the fixed plate (41), and the two detection devices (43) are respectively cooperated with the lower fixed roller (2) and the upper adjusting roller (3).

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