Rolling cutter device for rolling grooving of cylindrical battery

Abstract

Provided in the present application is a rolling cutter device for rolling grooving of a cylindrical battery, the device comprising an inclined-rolling-cutter mechanism, a flat-rolling-cutter mechanism and a switching mechanism, wherein the switching mechanism comprises a rotating mechanism and a locking mechanism, the rotating mechanism being configured to drive the inclined-rolling-cutter mechanism and the flat-rolling-cutter mechanism to rotate, and the locking mechanism being configured to lock the position of the rotating mechanism. When the switching of rolling cutters is required, by means of rotating the rotating mechanism, the inclined-rolling-cutter mechanism and the flat-rolling-cutter mechanism are transposed, an inclined rolling cutter of the inclined-rolling-cutter mechanism or a flat rolling cutter of the flat-rolling-cutter mechanism is made to be tangential to a cylindrical battery cell, and then the position of the rotating mechanism is locked by means of the locking mechanism, such that the inclined rolling cutter or the flat rolling cutter does not shake when performing rolling grooving on the cylindrical battery cell.

Description

Cylindrical battery grooving cutter device

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on August 31, 2023, with application number 202322372071.1. The entire contents of the above application are incorporated by reference into this application.

[0002] Technical Field

[0003] The present application relates to the technical field of battery systems, and in particular to a cylindrical battery grooving cutter device.

[0004] Background Art

[0005] The assembly process of cylindrical batteries includes grooving, cap welding, liquid injection, cap pressing and sealing. During the manufacturing process of cylindrical batteries, the cylindrical core composed of positive and negative electrode sheets and separators needs to be loaded into the battery shell to form a battery cell. The battery cell needs to be grooved by a grooving machine so that the cap placed at the groove position of the battery cell can withstand the pressure from sealing, thereby improving the sealing of the battery.

[0006] Technical issues

[0007] Cylindrical battery cells can be grooved using two methods: flat grooving and oblique grooving. To achieve different battery performance, the same battery model often incorporates both flat and oblique grooving configurations. However, in actual production, conventional grooving equipment can only accommodate one type of cutter. Switching cutters requires downtime and retooling, resulting in lengthy cutter changeovers and poor structural consistency after the change, severely impacting battery production efficiency and performance.

[0008] Technical Solutions

[0009] The present application provides a cylindrical battery grooving cutter device, including an inclined cutter mechanism, a flat cutter mechanism and a switching mechanism. The switching mechanism includes a rotating mechanism and a locking mechanism. The rotating mechanism is configured to drive the inclined cutter mechanism and the flat cutter mechanism to rotate, and the locking mechanism is configured to lock the position of the rotating mechanism.

[0010] In some implementations, the inclined roller mechanism and the flat roller mechanism are symmetrically arranged along the axis of the rotating mechanism so that the inclined roller mechanism and the flat roller mechanism can be switched and assembled with other mechanisms. The rotating mechanism can simultaneously drive the inclined roller mechanism and the flat roller mechanism to rotate, so that the inclined roller mechanism and the flat roller mechanism can be swapped by setting up a rotating mechanism.

[0011] In some implementations, the rotating mechanism includes a rotating cylinder and a mounting cylinder mounted thereon, wherein the rotating cylinder is capable of driving the mounting cylinder to rotate horizontally. The rotating cylinder is configured to drive the inclined hob mechanism and the flat hob mechanism to rotate to achieve horizontal displacement, and the mounting cylinder is configured to assemble the inclined hob mechanism and the flat hob mechanism to achieve connection between the rotating mechanism and the inclined hob mechanism and the flat hob mechanism.

[0012] In some implementations, the rotating cylinder is disposed on a first base plate and is capable of horizontally rotating on the first base plate. The locking mechanism includes a limit plate and a positioning pin, and the limit plate is assembled to the first base plate via the positioning pin. When the locking mechanism locks the rotating mechanism, the limit plate abuts against the rotating cylinder and the mounting cylinder of the rotating mechanism, and the contact surfaces of the limit plate, the rotating cylinder, and the mounting cylinder are tightly fitted to lock the rotating mechanism, thereby stably securing the rotating mechanism on the first base plate.

[0013] In some implementations, a horizontal slider is provided under the first base plate, and the horizontal slider is provided on the second base plate. The first base plate can slide horizontally along the second base plate through the horizontal slider, so that the inclined roller mechanism and the flat roller mechanism can adjust their positions in the horizontal direction.

[0014] In some implementations, an inclined roller mechanism and a flat roller mechanism are symmetrically provided on both sides of the mounting column. The inclined roller mechanism and the flat roller mechanism can slide up and down along the mounting column to adjust the position in the vertical direction.

[0015] In some implementations, the inclined roller mechanism includes an inclined roller and a first mounting plate, and the inclined roller is mounted on the first mounting plate through a bearing. The flat roller mechanism includes a flat roller and a second mounting plate, and the flat roller is mounted on the second mounting plate through a bearing, so that the inclined roller and the flat roller can rotate along the axis to adjust the orientation tangent to the cylindrical battery cell.

[0016] In some implementations, the first mounting plate of the inclined roller mechanism is assembled to the mounting column via a first slider that can slide up and down, and the second mounting plate of the flat roller mechanism is assembled to the mounting column via a second slider that can slide up and down, so that the inclined roller mechanism and the flat roller mechanism are installed on the rotating mechanism, and can slide up and down to adjust the position in the vertical direction.

[0017] In some implementations, the inclined roller mechanism and the flat roller mechanism are respectively provided with a distance adjustment mechanism, and the distance adjustment mechanism is configured to adjust the distance between the inclined roller mechanism and the flat roller mechanism in the vertical direction and the horizontal direction.

[0018] In some implementations, the distance adjustment mechanism includes a first vertical micrometer, a second vertical micrometer, and a horizontal micrometer. The first vertical micrometer is vertically fixedly connected to the first mounting plate of the inclined hob mechanism to adjust the distance of the inclined hob mechanism in the vertical direction, and the second vertical micrometer is vertically fixedly connected to the second mounting plate of the flat hob mechanism to adjust the distance of the flat hob mechanism in the vertical direction.

[0019] In some implementations, the horizontal micrometer is movably connected to the first mounting plate or the second mounting plate. When the cylindrical battery cell needs to be beveled, the beveled cutter of the beveled cutter mechanism is made tangent to the cylindrical battery cell, and the flat cutter mechanism is snap-fitted to the horizontal micrometer. When the cylindrical battery cell needs to be flatly grooved, the flat cutter of the flat cutter mechanism is made tangent to the cylindrical battery cell, and the beveled cutter mechanism is snap-fitted to the horizontal micrometer.

[0020] In some implementations, the first vertical micrometer and the second vertical micrometer are fixedly connected via a first fixing plate, and the first fixing plate can make the first vertical micrometer and the second vertical micrometer stand upright and keep the first vertical micrometer and the second vertical micrometer parallel in the vertical direction.

[0021] In some implementations, the horizontal micrometer is fixedly connected to the second base plate via a second fixing plate, and the second fixing plate is configured to support the horizontal micrometer so that the horizontal micrometer remains horizontal and stable.

[0022] Beneficial effects

[0023] The present application provides a cylindrical battery grooving cutter device, which includes an inclined cutter mechanism, a flat cutter mechanism and a switching mechanism. The switching mechanism includes a rotating mechanism and a locking mechanism. The rotating mechanism is configured to drive the inclined cutter mechanism and the flat cutter mechanism to rotate, and the locking mechanism is configured to lock the position of the rotating mechanism. When it is necessary to switch the rollers, the inclined roller mechanism and the flat roller mechanism are swapped by rotating the rotating mechanism, so that the inclined roller of the inclined roller mechanism or the flat roller of the flat roller mechanism is tangent to the cylindrical battery cell, and then the position of the rotating mechanism is locked by the locking mechanism, so that the inclined roller or the flat roller does not shake when rolling the cylindrical battery cell, thereby realizing the inclined grooving or flat grooving of the cylindrical battery cell. The cylindrical battery grooving roller device of the present application is compatible with the inclined roller mechanism and the flat roller mechanism, and a switching mechanism is set between the inclined roller mechanism and the flat roller mechanism. When it is necessary to switch the rollers, the switching mechanism is used to realize the swap of the inclined roller mechanism and the flat roller mechanism, thereby meeting the compatible production of different cylindrical batteries and different grooving mechanisms, improving the conversion efficiency, ensuring the consistency of the mechanism, and making the cylindrical battery production efficiency higher, the grooving consistency better, and the battery performance stability stronger.

[0024] BRIEF DESCRIPTION OF THE DRAWINGS

[0025] FIG1 is a schematic structural diagram of a cylindrical battery groove rolling cutter device provided by the present application;

[0026] FIG2 is a front view structural schematic diagram of the cylindrical battery grooving cutter device provided in the present application.

[0027] Markings in the figure: 1- inclined hob mechanism; 11- inclined hob; 12- first mounting plate; 2- flat hob mechanism; 21- flat hob; 22- second mounting plate; 3- switching mechanism; 31- rotating mechanism; 311- rotating cylinder; 312- mounting cylinder; 32- locking mechanism; 321- limiting plate; 322- positioning pin; 4- distance adjustment mechanism; 41- first vertical micrometer; 42- second vertical micrometer; 43- horizontal micrometer; 5- first base plate; 6- horizontal slider; 7- second base plate; 8- first fixed plate; 9- second fixed plate; 10- first slider; 100- second slider.

[0028] Modes for Carrying Out the Invention

[0029] The present application is described below with reference to the accompanying drawings.

[0030] The present application is described below with reference to the accompanying drawings and embodiments. The embodiments described herein are only used to explain the present application and are not intended to limit the present application.

[0031] Example 1

[0032] As shown in Figure 1, a cylindrical battery grooving cutter device includes an inclined cutter mechanism 1, a flat cutter mechanism 2 and a switching mechanism 3. The switching mechanism 3 includes a rotating mechanism 31 and a locking mechanism 32. The rotating mechanism 31 is configured to drive the inclined cutter mechanism 1 and the flat cutter mechanism 2 to rotate, and the locking mechanism 32 is configured to lock the position of the rotating mechanism 31.

[0033] When it is necessary to switch the rollers, the rotating mechanism 31 is rotated to swap the positions of the inclined roller mechanism 1 and the flat roller mechanism 2, so that the inclined roller 11 of the inclined roller mechanism 1 or the flat roller 21 of the flat roller mechanism 2 is tangent to the cylindrical battery cell, and then the position of the rotating mechanism 31 is locked by the locking mechanism 32, so that the inclined roller 11 or the flat roller 21 does not shake when rolling the cylindrical battery cell, thereby realizing the inclined rolling groove or flat rolling groove of the cylindrical battery cell, meeting the compatible production of different cylindrical batteries and different rolling groove mechanisms, improving the conversion efficiency, ensuring the consistency of the mechanism, and making the cylindrical battery production efficiency higher, the rolling groove consistency better, and the battery performance stability stronger.

[0034] In some implementations, the inclined hob mechanism 1 and the flat hob mechanism 2 can be symmetrically arranged along the axis of the rotating mechanism 31, allowing for easy switching between the inclined hob mechanism 1 and the flat hob mechanism 2 and assembly with other mechanisms. Because the inclined hob mechanism 1 and the flat hob mechanism 2 are both arranged on the same rotating mechanism 31, the rotating mechanism 31 can simultaneously drive the inclined hob mechanism 1 and the flat hob mechanism 2 to rotate, facilitating their interchange, as shown in Figure 2.

[0035] In some implementations, the rotating mechanism 31 includes a rotating cylinder 311 and a mounting cylinder 312 mounted thereon. The rotating cylinder 311 is fixedly connected to the mounting cylinder 312, and the mounting cylinder 312 can rotate with the rotating cylinder 311. Exemplarily, the rotating cylinder 311 and the mounting cylinder 312 have square cross-sections to facilitate the assembly of the rotating mechanism 31 with other mechanisms. The rotating cylinder 311 is configured to drive the inclined hob mechanism 1 and the flat hob mechanism 2 to rotate to achieve horizontal transposition. The mounting cylinder 312 is configured to assemble the inclined hob mechanism 1 and the flat hob mechanism 2, so that the inclined hob mechanism 1 and the flat hob mechanism 2 are installed on the same rotating mechanism 31, as shown in Figure 2.

[0036] In some implementations, the rotating cylinder 311 is disposed on the first base plate 5. The rotating cylinder 311 and the first base plate 5 may be connected by a bearing so that the rotating cylinder 311 can rotate horizontally on the first base plate 5. The locking mechanism 32 includes a limit plate 321 and a positioning pin 322. The limit plate 321 is assembled on the first base plate 5 via the positioning pin 322. When the locking mechanism 32 locks the rotating mechanism 31, the limit plate 321 abuts against the rotating cylinder 311 and the mounting cylinder 312 of the rotating mechanism 31, and the contact surfaces of the limit plate 321, the rotating cylinder 311, and the mounting cylinder 312 are tightly fitted to lock the rotating mechanism 31, so that the rotating mechanism 31 is stable and immobile on the first base plate 5. Locking the rotating mechanism 31 by abutting does not damage the structure of the rotating mechanism 31 and facilitates the horizontal rotation of the rotating mechanism 31, as shown in Figure 2.

[0037] In some implementations, a horizontal slider 6 can be fixedly connected below the first base plate 5, driving the first base plate 5 to slide horizontally. The horizontal slider 6 can be mounted on the second base plate 7, allowing the first base plate 5 to slide horizontally along the second base plate 7 via the horizontal slider 6, thereby enabling the horizontal adjustment of the inclined hob mechanism 1 and the flat hob mechanism 2. For example, through-holes with internal threads can be provided on the horizontal slider 6 and the second base plate 7. When locking the first base plate 5, bolts can be used to secure the through-holes, thereby securing the first base plate 5, as shown in Figure 2.

[0038] In some implementations, the inclined roller mechanism 1 and the flat roller mechanism 2 are symmetrically arranged on both sides of the mounting column 312. The inclined roller mechanism 1 and the flat roller mechanism 2 can slide up and down along the mounting column 312 to adjust the position in the vertical direction, as shown in Figure 2.

[0039] In some implementations, the inclined hob mechanism 1 includes an inclined hob 11 and a first mounting plate 12, and the inclined hob 11 is mounted on the first mounting plate 12 through a bearing. The flat hob mechanism 2 includes a flat hob 21 and a second mounting plate 22, and the flat hob 21 is mounted on the second mounting plate 22 through a bearing, so that the inclined hob 11 and the flat hob 21 can rotate along the axis to adjust the orientation tangent to the cylindrical battery cell, as shown in Figure 2.

[0040] In some implementations, the first mounting plate 12 of the inclined hob mechanism 1 is mounted on the mounting column 312 via a first slider 10 that can slide up and down, while the second mounting plate 22 of the flat hob mechanism 2 is mounted on the mounting column 312 via a second slider 100 that can slide up and down. Both the first slider 10 and the second slider 100 can slide up and down along the mounting column 312. For example, the mounting column 312 is provided with a waist hole, and the first slider 10 and the second slider 100 are provided with through holes. When the first slider 10 and the second slider 100 need to be locked, the corresponding waist holes and through holes can be fastened with bolts, thereby achieving the installation of the inclined hob mechanism 1 and the flat hob mechanism 2 on the rotating mechanism 31, as shown in Figure 2.

[0041] In some implementations, the inclined roller mechanism 1 and the flat roller mechanism 2 are respectively provided with a distance adjustment mechanism 4, which is configured to adjust the distance between the inclined roller mechanism 1 and the flat roller mechanism 2 in the vertical and horizontal directions, so as to accurately measure and adjust the position of the cylindrical battery cell and the inclined roller mechanism 1 or the flat roller mechanism 2, so as to achieve tangency between the cylindrical battery cell and the inclined roller 11 or the flat roller 21, thereby achieving precise grooving of the cylindrical battery cell, as shown in FIG2 .

[0042] In some implementations, the distance adjustment mechanism 4 includes a first vertical micrometer 41, a second vertical micrometer 42, and a horizontal micrometer 43. The first vertical micrometer 41 is vertically fixedly connected to the first mounting plate 12 of the bevel hob mechanism 1 to adjust the distance of the bevel hob mechanism 1 in the vertical direction, and the second vertical micrometer 42 is vertically fixedly connected to the second mounting plate 22 of the flat hob mechanism 2 to adjust the distance of the flat hob mechanism 2 in the vertical direction, as shown in FIG2 .

[0043] In some implementations, the horizontal micrometer 43 can be movably connected to the first mounting plate 12 or the second mounting plate 22 through an elastic member. When the cylindrical battery cell needs to be beveled, the bevel cutter 11 of the bevel cutter mechanism 1 is made tangent to the cylindrical battery cell, and the flat cutter mechanism 2 is engaged with the horizontal micrometer 43; when the cylindrical battery cell needs to be flatly grooved, the flat cutter 21 of the flat cutter mechanism 2 is made tangent to the cylindrical battery cell, and the bevel cutter mechanism 1 is engaged with the horizontal micrometer 43, as shown in Figure 2.

[0044] In some implementations, the first vertical micrometer 41 and the second vertical micrometer 42 can be firmly connected by a first fixed plate 8. The first fixed plate 8 can make the first vertical micrometer 41 and the second vertical micrometer 42 stand upright and keep the first vertical micrometer 41 and the second vertical micrometer 42 parallel in the vertical direction, so as to accurately measure the vertical distance between the inclined hob mechanism 1 and the flat hob mechanism 2, as shown in Figure 2.

[0045] The horizontal micrometer 43 is fixed by the second fixing plate 9. In some implementations, the horizontal micrometer 43 is firmly connected to the second base plate 7 via the second fixing plate 9. The second fixing plate 9 is configured to support the horizontal micrometer 43, so that the horizontal micrometer 43 remains horizontal and stable, thereby accurately measuring the horizontal distance between the inclined hob mechanism 1 and the flat hob mechanism 2, as shown in FIG2 .

[0046] In some implementations, the second fixing plate 9 is vertically connected to the second base plate 7. For example, through holes can be set on the second fixing plate 9 and the second base plate 7, and the second fixing plate 9 can be locked on the second base plate 7 by fastening the bolts to the through holes, as shown in Figure 2.

[0047] Example 2

[0048] When using a cylindrical battery grooving cutter device to groove a cylindrical battery cell, when it is necessary to switch the inclined cutter mechanism 1 and the flat cutter mechanism 2, manually pull up the positioning pin 322 to separate the limit plate 321 from the rotating mechanism 31, rotate the rotating mechanism 31 by 180°, swap the inclined cutter mechanism 1 and the flat cutter mechanism 2, reinsert the positioning pin 322, make the limit plate 321 press against the rotating mechanism 31, and complete the switching. The horizontal slider 6 is slidably adjusted in position on the second base plate 7 and the horizontal micrometer 43 is used to precisely adjust the distance so that the horizontal position of the beveled cutter 11 or the flat cutter 21 matches the cylindrical battery cell. The first slider 10 or the second slider 100 is slidably adjusted in position on the mounting column 312 and the first vertical micrometer 41 or the second vertical micrometer 42 is used to precisely adjust the distance so that the vertical position of the beveled cutter 11 or the flat cutter 21 matches the cylindrical battery cell. After the distance adjustment is completed, the position of the first slider 10 or the second slider 100 on the mounting column 312 and the position of the horizontal slider 6 on the second base plate 7 are locked with bolts. The beveled cutter 11 or the flat cutter 21 is driven by a drive mechanism provided on the cylindrical battery grooving cutter device to groove the cylindrical battery cell.

Claims

1. A cylindrical battery groove rolling cutter device, comprising an inclined rolling cutter mechanism (1), a flat rolling cutter mechanism (2) and a switching mechanism (3), wherein the switching mechanism (3) comprises a rotating mechanism (31) and a locking mechanism (32), wherein the rotating mechanism (31) is configured to drive the inclined rolling cutter mechanism (1) and the flat rolling cutter mechanism (2) to rotate, and the locking mechanism (32) is configured to lock the position of the rotating mechanism (31).

2. The device according to claim 1, wherein: The inclined roller mechanism (1) and the flat roller mechanism (2) are symmetrically arranged along the axis of the rotating mechanism (31), and the rotating mechanism (31) can simultaneously drive the inclined roller mechanism (1) and the flat roller mechanism (2) to rotate.

3. The device according to claim 2, wherein: The rotating mechanism (31) comprises a rotating column (311) and a mounting column (312) arranged above the rotating column (311); the rotating column (311) can drive the mounting column (312) to rotate horizontally.

4. The device according to claim 3, wherein: The rotating cylinder (311) is mounted on the first bottom plate (5); the locking mechanism (32) comprises a limit plate (321) and a positioning pin (322); the limit plate (321) is fixed to the first bottom plate (5) via the positioning pin (322); the limit plate (321) is tightly fitted to the rotating cylinder (311) and the mounting cylinder (312).

5. The device according to claim 4, wherein: A horizontal sliding block (6) is provided below the first bottom plate (5), and the horizontal sliding block (6) can drive the first bottom plate (5) to slide horizontally.

6. The device according to claim 4, wherein: The inclined roller mechanism (1) and the flat roller mechanism (2) are capable of sliding up and down along the mounting column (312).

7. The device according to claim 6, wherein: The first mounting plate (12) of the inclined roller mechanism (1) is mounted on the mounting column (312) via a first slider (10), and the second mounting plate (22) of the flat roller mechanism (2) is mounted on the mounting column (312) via a second slider (100), and both the first slider (10) and the second slider (100) are capable of sliding up and down along the mounting column (312).

8. The device according to claim 7, wherein: The inclined rolling cutter mechanism (1) and the flat rolling cutter mechanism (2) are respectively provided with a distance adjustment mechanism (4).

9. The device according to claim 8, wherein: The distance adjustment mechanism (4) comprises a first vertical micrometer (41), a second vertical micrometer (42) and a horizontal micrometer (43); the first vertical micrometer (41) is connected to the first mounting plate (12), the second vertical micrometer (42) is connected to the second mounting plate (22), and the horizontal micrometer (43) is connected to the first mounting plate (12) or the second mounting plate (22).

10. The device according to claim 9, wherein: The first vertical micrometer (41) and the second vertical micrometer (42) are connected via a first fixing plate (8), and the horizontal micrometer (43) is fixed via a second fixing plate (9).

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