A matching centering tool for cylindrical lithium-ion battery groove rolling equipment

Abstract

The present invention discloses a matching centering tool for cylindrical lithium-ion battery groove rolling equipment, comprising an upper connecting part (1), a roller matching part (2), an intermediate matching part (3) and a lower connecting part (4) connected together in sequence from top to bottom; the upper part of the cylindrical lithium-ion battery groove rolling equipment is provided with a positioning head cover (9), the positioning head cover (9) has a head positioning circular hole (90) opening downward and distributed vertically, and the top of the upper connecting part (1) is matched with the head positioning circular hole (90); the lower part of the cylindrical lithium-ion battery groove rolling equipment is provided with a lifting mechanism (5), and the top boss of the lifting mechanism (5) is matched with the bottom of the lower connecting part (4). The matching centering tool for cylindrical lithium-ion battery groove rolling equipment disclosed by the present invention can conveniently cooperate with the upper and lower clamping mechanisms of the cylindrical lithium-ion battery groove rolling equipment to perform upper and lower coaxial centering operations, so that the coaxial centering operation efficiency is high and the accuracy of the coaxial centering operation is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of lithium ion battery production and manufacturing, in particular to a matching centering tool for cylindrical lithium ion battery groove rolling equipment. Background Art

[0002] At present, lithium-ion batteries have the advantages of high specific energy, many cycles and long storage time. They are not only widely used in portable electronic devices such as mobile phones, digital cameras and laptops, but also widely used in large and medium-sized electric equipment such as electric vehicles, electric bicycles and electric tools. Therefore, the performance requirements for lithium-ion batteries are getting higher and higher.

[0003] For cylindrical lithium-ion battery cells, during the assembly process, the battery groove rolling equipment is required to roll grooves on the upper part of the battery steel shell for the subsequent addition of the top cover to seal and complete the assembly of the battery cell. For the existing battery groove rolling equipment (i.e., battery groove rolling machine), when rolling grooves, the upper and lower clamping mechanisms (specifically, the positioning head cover located at the top and the lifting mechanism located at the bottom) are required to press the upper and lower ends of the battery cell at the same time for rotation, and then the groove rolling tool (i.e., the hob) is gradually pressed inward into the battery cell to complete the groove rolling of the battery cell. If the upper and lower clamping mechanisms cannot be coaxially aligned and located on the same axis, then during the process of clamping the battery cell at the inlet of the grooving equipment (that is, the positioning head cover located above and the lifting mechanism located below are pressing the upper and lower ends of the battery cell), the upper part of the battery cell cannot accurately enter the positioning head cover, causing damage to the upper shell of the battery cell, and after the battery cell grooving is completed at the outlet of the grooving equipment, the upper and lower clamping mechanisms release the battery cell to leave the grooving equipment, resulting in the battery cell not being able to fall normally, causing damage to the bottom of the battery cell, resulting in a large number of battery cells being scrapped, and the size of the processed battery cell is poor, affecting the sealing and appearance of the battery cell.

[0004] At present, in order to achieve the coaxial alignment of the upper and lower clamping mechanisms of the battery grooving equipment (i.e., the battery grooving machine), in the event of abnormal impact or battery damage, it is necessary to rely on the technical experience of the adjuster and manual repeated attempts and verifications to ensure the coaxial alignment of the upper and lower clamping mechanisms. The adjustment is time-consuming and labor-intensive, the adjustment work efficiency is low, and the accuracy is low, which affects the overall production efficiency of the battery.

[0005] At the same time, under normal circumstances, in the process of attempting to verify, it is necessary to use actual battery cells in production for verification and adjustment, resulting in the scrapping of more battery cells and increasing the overall production cost of the battery. Summary of the invention

[0006] The purpose of the present invention is to provide a matching centering tool for cylindrical lithium-ion battery groove rolling equipment in view of the technical defects in the prior art.

[0007] To this end, the present invention provides a matching centering tool for a cylindrical lithium-ion battery groove rolling device, comprising an upper connecting portion, a hob matching portion, an intermediate matching portion and a lower connecting portion which are sequentially connected together from top to bottom;

[0008] The upper part of the cylindrical lithium-ion battery slot rolling device is provided with a positioning head cover, the positioning head cover has a head positioning circular hole which opens downward and is vertically distributed, the shape and size of the top of the upper connecting part correspond to the shape and size of the head positioning circular hole, and the top of the upper connecting part matches the head positioning circular hole;

[0009] The lower part of the cylindrical lithium-ion battery groove rolling device is provided with a lifting mechanism, the shape and size of the top boss of the lifting mechanism corresponds to the shape and size of the bottom of the lower connecting part, and the top boss of the lifting mechanism matches the bottom of the lower connecting part.

[0010] The bottom edge of the lower connecting part is provided with a circularly distributed limiting convex edge.

[0011] The interior of the limiting convex edge is provided with a top boss limiting groove;

[0012] The shape and size of the limiting groove of the top boss correspond to and match the shape and size of the top boss of the lifting mechanism.

[0013] The diameter of the hob matching portion is smaller than the diameters of the upper connecting portion and the middle matching portion.

[0014] Wherein, the roller cutter mating portion located between the upper connecting portion and the middle mating portion is used to accommodate the roller cutter of the cylindrical lithium-ion battery groove rolling equipment;

[0015] The vertical height of the roller matching portion is greater than the vertical thickness of the roller of the cylindrical lithium-ion battery groove rolling equipment.

[0016] The shape and size of the middle matching portion and the left side of the lower connecting portion correspond to the shape and size of the battery positioning seat and the bracket positioning seat of the cylindrical lithium-ion battery rolling groove equipment;

[0017] The battery positioning seat is arranged on the top of the bracket positioning seat.

[0018] Among them, the upper connecting part, the hob matching part, the middle matching part and the lower connecting part are located on the same axis.

[0019] It can be seen from the technical solution provided by the present invention that, compared with the prior art, the present invention provides a matching centering tool for a cylindrical lithium-ion battery grooving equipment, which can conveniently assist and cooperate with the upper and lower clamping mechanisms of the cylindrical lithium-ion battery grooving equipment (specifically, the positioning head cover located at the top and the lifting mechanism located at the bottom) to perform upper and lower coaxial centering operations, so that the coaxial centering operation is efficient, the accuracy of the coaxial centering operation is guaranteed, and it has great production practical significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A front view of a matching centering tool for a cylindrical lithium-ion battery groove rolling device provided by the present invention;

[0021] Figure 2 A cross-sectional view of a matching centering tool for a cylindrical lithium-ion battery groove rolling device provided by the present invention;

[0022] Figure 3 A schematic diagram of a three-dimensional assembly state of a matching centering tool for a cylindrical lithium-ion battery groove rolling device provided by the present invention when cooperating with the battery groove rolling device to perform a vertical coaxial centering operation;

[0023] Figure 4 A three-dimensional assembly cross-sectional view of a matching alignment tool for a cylindrical lithium-ion battery groove rolling device provided by the present invention when the tool cooperates with the battery groove rolling device to perform upper and lower coaxial alignment operations. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the scheme of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and implementation modes.

[0025] See also Figures 1 to 4 The present invention provides a matching centering tool for a cylindrical lithium-ion battery groove rolling device, comprising an upper connecting portion 1, a hob matching portion 2, an intermediate matching portion 3 and a lower connecting portion 4 which are sequentially connected from top to bottom;

[0026] The upper part of the cylindrical lithium-ion battery slot rolling device is provided with a positioning head cover 9, which has a head positioning circular hole 90 which opens downward and is vertically distributed. The shape and size of the top of the upper connecting part 1 correspond to the shape and size of the head positioning circular hole 90, and the top of the upper connecting part 1 matches the head positioning circular hole 90;

[0027] The lower part of the cylindrical lithium-ion battery rolling groove equipment has a lifting mechanism 5 (for example, a cam lifting mechanism), and the shape and size of the top boss (i.e., the lifting support) of the lifting mechanism 5 corresponds to the shape and size of the bottom of the lower connecting part 4, and the top boss (i.e., the lifting support) of the lifting mechanism 5 is matched with the bottom of the lower connecting part 4.

[0028] It should be noted that the upper and lower clamping mechanisms of the cylindrical lithium-ion battery groove rolling equipment (specifically, the positioning head cover 9 located at the top and the lifting mechanism 5 located at the bottom) can simultaneously press the upper and lower ends of the battery cell for rotation. In the present invention, the upper and lower clamping mechanisms can simultaneously press the upper connecting part 1 and the lower connecting part 4 for rotation. At this time, the positioning head cover 9 and the lifting mechanism 5 can be connected to the output end of the external servo motor and driven by the servo motor to perform a rotation operation.

[0029] In the present invention, the bottom edges of the upper and lower connecting parts 4 are specifically implemented to have annularly distributed limiting convex edges 40;

[0030] The interior of the limiting convex edge 40 is provided with a top boss limiting groove 42;

[0031] The shape and size of the top boss limiting groove 42 correspond to the shape and size of the top boss of the lifting mechanism 5 .

[0032] In the present invention, in a specific implementation, the diameter of the hob mating portion 2 is smaller than the diameters of the upper connecting portion 1 and the middle mating portion 3 .

[0033] In specific implementation, the roller cutter matching portion 2 located between the upper connecting portion 1 and the middle matching portion 3 is used to accommodate the roller cutter 8 of the cylindrical lithium-ion battery groove rolling device when the positioning head cover 9 and the lifting mechanism 5 are coaxially aligned up and down;

[0034] The vertical height of the roller cutter mating portion 2 is greater than the vertical thickness of the roller cutter 8 of the cylindrical lithium-ion battery groove rolling equipment.

[0035] Therefore, for the present invention, the shape and size of the hob mating portion 2 can avoid the cutting depth of the groove rolling tool (i.e., the hob), and does not affect the automatic groove rolling of the battery groove rolling machine. The center of the hob 8 is connected to the output end of the external servo motor, and is driven by the servo motor to rotate, so that the groove rolling operation can be performed.

[0036] In the present invention, in specific implementation, the cylindrical lithium-ion battery groove rolling equipment is a groove rolling equipment for producing 18650 cylindrical batteries produced by Nagano Automatic Machinery Co., Ltd. of Japan, which has Figure 3 , Figure 4 The structure shown has a cell production efficiency of 40 ppm.

[0037] In the present invention, in a specific implementation, the shape and size of the middle matching portion 3 and the left side of the lower connecting portion 4 correspond to the shape and size of the battery positioning seat 7 and the bracket positioning seat 6 of the cylindrical lithium-ion battery rolling groove device;

[0038] The battery positioning seat 7 is arranged on the top of the bracket positioning seat 6 .

[0039] In the present invention, in a specific implementation, the shape of the middle matching portion 3 corresponds to the shape of the cylindrical lithium-ion battery that needs to be grooved, that is, it simulates the battery shape, so as to match the grooved battery positioning seat 7.

[0040] In the present invention, in a specific implementation, the upper connecting part 1, the hob mating part 2, the middle mating part 3 and the lower connecting part 4 are located on the same axis, that is, the upper connecting part 1, the hob mating part 2, the middle mating part 3 and the lower connecting part 4 are all coaxial structures, thereby ensuring that the upper and lower clamping mechanisms (specifically, the positioning head cover located at the top and the lifting mechanism located at the bottom) can be coaxially aligned up and down through the tool of the present invention.

[0041] It should be noted that the tool provided by the present invention is a tool for centering adjustment of the upper and lower clamping mechanisms in the grooving process. It can be used for the coaxial positioning and centering adjustment of the upper and lower clamping mechanisms (specifically, the positioning head cover located at the upper part and the lifting mechanism located at the lower part), so that the adjustment is simple, fast and effective. At the same time, it can replace battery cells to complete the automatic grooving trial verification operation. When used, it will not have an adverse effect on the equipment, thereby improving the adjustment efficiency and reducing the production cost.

[0042] For the present invention, during specific operation and use, the upper connecting part 1 is installed in alignment with the positioning head cover 9. During installation, ensure that the hob 8 is located in the area of ​​the hob matching part 2, then adjust the battery positioning seat 7 to align it with the middle matching part 3, then adjust the support block positioning seat 6 to align it with the upper truncated cone 41 of the lower connecting part 4, then adjust the lifting mechanism 5 to align it with the top boss limiting groove 42 at the bottom of the lower connecting part 4. Thus, the tool of the present invention can cooperate with the cylindrical lithium-ion battery groove rolling equipment (i.e., the groove rolling machine) to complete the upper and lower clamping mechanisms (specifically, the positioning head cover located at the top and the lifting mechanism located at the bottom) to perform upper and lower coaxial alignment operations.

[0043] The present invention has a scientific and reasonable structural design, which effectively simulates the shape of the battery cell and the actual groove rolling working state, and can quickly and accurately feedback the centering conditions of the four parts of the groove rolling, effectively improving the efficiency of adjustment and calibration and reducing groove rolling scratches.

[0044] Compared with the prior art, the centering tool for cylindrical lithium-ion battery groove rolling equipment provided by the present invention has the following beneficial effects:

[0045] 1. The tool of the present invention can cooperate with the battery groove rolling equipment to simulate the groove rolling operation of the battery cell, and can realize automatic groove rolling without damaging the equipment during use.

[0046] 2. The tool of the present invention is coaxial up and down, and multiple parts can be adjusted at one time, making the centering adjustment simple, fast and effective.

[0047] 3. The use of the tool of the present invention can avoid the increase in cost caused by the groove rolling verification operation of the battery cell, thereby reducing the production cost.

[0048] 4. The tool of the present invention can be used repeatedly.

[0049] To sum up, compared with the prior art, the present invention provides a matching alignment tool for a cylindrical lithium-ion battery grooving equipment, which can conveniently assist and cooperate with the upper and lower clamping mechanisms of the cylindrical lithium-ion battery grooving equipment (specifically, the positioning head cover located at the top and the lifting mechanism located at the bottom) to perform upper and lower coaxial alignment operations, so that the coaxial alignment operation is efficient, the accuracy of the coaxial alignment operation is guaranteed, and it has great production practical significance.

[0050] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A matching centering tool for cylindrical lithium-ion battery groove rolling equipment, characterized in that: The device comprises an upper connecting portion (1), a hob matching portion (2), an intermediate matching portion (3) and a lower connecting portion (4) which are connected together in sequence from top to bottom; the upper portion of the cylindrical lithium-ion battery groove rolling device comprises a positioning head cover (9), the positioning head cover (9) comprises a head positioning circular hole (90) which opens downward and is vertically distributed; the shape and size of the top of the upper connecting portion (1) correspond to and match the shape and size of the head positioning circular hole (90), and the top of the upper connecting portion (1) matches the head positioning circular hole (90); the lower portion of the cylindrical lithium-ion battery groove rolling device comprises a lifting mechanism (5), the lifting mechanism The shape and size of the top boss of the lifting mechanism (5) correspond to and match the shape and size of the bottom of the lower connecting portion (4), and the top boss of the lifting mechanism (5) matches the bottom of the lower connecting portion (4); the shape and size of the middle matching portion (3) and the left side of the lower connecting portion (4) correspond to and match the shape and size of the battery positioning seat (7) and the support block positioning seat (6) of the cylindrical lithium-ion battery groove rolling device; the battery positioning seat (7) is arranged on the top of the support block positioning seat (6); the upper connecting portion (1), the hob matching portion (2), the middle matching portion (3) and the lower connecting portion (4) are located on the same axis.

2. The matching centering tool according to claim 1, characterized in that: The bottom edge of the lower connecting portion (4) is provided with annularly distributed limiting convex edges (40); the inside of the limiting convex edge (40) is provided with a top boss limiting groove (42); the shape and size of the top boss limiting groove (42) correspond to the shape and size of the top boss of the lifting mechanism (5).

3. The matching centering tool according to claim 1, characterized in that: The diameter of the hob matching portion (2) is smaller than the diameters of the upper connecting portion (1) and the middle matching portion (3).

4. The matching centering tool according to claim 3, characterized in that: The roller cutter mating portion (2) located between the upper connecting portion (1) and the middle mating portion (3) is used to accommodate a roller cutter (8) of a cylindrical lithium-ion battery groove rolling device; the vertical height of the roller cutter mating portion (2) is greater than the vertical thickness of the roller cutter (8) of the cylindrical lithium-ion battery groove rolling device.

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