Soft package battery cell short tab polishing equipment

Abstract

The invention discloses soft package battery cell short tab polishing equipment, and belongs to the technical field of tab polishing. The soft package battery cell short tab polishing equipment comprises a conveying belt, and a tool is conveyed through the conveying belt; the rotating assembly and the positioning assembly are located on the two sides of the conveying belt correspondingly, the grinding assembly is located on the same side of the rotating assembly, and sensing assemblies are arranged on the two sides of the conveying belt correspondingly; the rotating assembly is used for driving the tool to rotate, and the positioning assembly is used for positioning the tool. The device can be used for polishing a plurality of tabs which are not positioned on the same horizontal line, and can be used for polishing different planes of the tabs according to requirements.

Description

Technical Field

[0001] The invention belongs to the technical field of tab polishing, and in particular relates to a short tab polishing device for a soft-pack battery cell. Background Art

[0002] When welding the battery wires or protection plates, it is found that the battery ears will be oxidized, resulting in false welding or cold welding of the battery, so the ears need to be polished.

[0003] The internal structure of lithium-ion batteries is mainly divided into four types according to their production methods: normal structure, middle-ear structure, multi-ear structure, and stacked structure. In the normal structure, the positive and negative electrodes have only one ear, which is located at one end of the pole piece and is made by winding; the middle-ear structure has the ear located in the middle of the pole piece, which is generally processed by laser cleaning, interval coating, tape, etc., and the battery has a small internal resistance and good rate performance; the multi-ear wound pole piece has multiple ears, and the position of the ears varies according to the design, the battery resistance is smaller, and the battery rate performance is better; the stacked battery is made by cutting the pole piece into a specific shape and folding the positive and negative electrodes alternately. There is an ear in each layer, and the battery rate performance of this structure is the best. Therefore, not all ears of lithium-ion batteries are located on the same horizontal line.

[0004] However, the prior art is only applicable to polishing the tabs on the same horizontal line. Summary of the invention

[0005] In view of the above problems in the prior art, an object of the present invention is to provide a short tab polishing device for soft-pack battery cells.

[0006] The present invention provides the following technical solutions: A soft-pack battery cell short tab grinding device comprises a conveyor belt, through which a tool is transported; a rotating assembly and a positioning assembly are respectively located on both sides of the conveyor belt, a grinding assembly is located on the same side of the rotating assembly, and induction assemblies are provided on both sides of the conveyor belt; the rotating assembly is used to drive the tool to rotate, and the positioning assembly is used to position the tool.

[0007] Specifically, the tooling includes a base, a gear one movably mounted on the base, a mounting plate mounted on the gear one, a plurality of positioning blocks mounted on the mounting plate, a positioning groove formed by the plurality of positioning blocks, and a workpiece is placed in the positioning groove.

[0008] Specifically, the rotating assembly includes a base frame, a bottom plate movably mounted on the base frame through a moving assembly three, and a gear two movably mounted on the bottom plate through a motor.

[0009] Specifically, the positioning assembly includes a slide cylinder, a Y-shaped plate installed on the slide cylinder, and rollers are symmetrically and movably installed on the Y-shaped plate.

[0010] Specifically, the pressing force F of the sliding table cylinder on the roller needs to meet two conditions: A. The pressing force F needs to ensure that the force P on the outer diameter of the motor-driven gear two does not push away gear one, so F > P; B. The pressing force F also needs to avoid being too large, so as to prevent gear two from not being able to rotate, so F is less than the allowable load force Q of gear two.

[0011] Specifically, since P = T×(2 / D2), so F > T×(2 / D2); where T is the motor torque with a reduction ratio of i: T = T0×i, T0 is the rated torque of the motor (N·m), and D2 is the diameter of gear two (m).

[0012] Specifically, since Q = Q0 / L, so F < Q0 / L; where Q0 is the allowable overhanging load of the motor (N·mm), and L is the distance between the motor mounting surface and the meshing position of gear two (mm).

[0013] Specifically, the roller is a polyurethane roller.

[0014] Specifically, the induction component includes a bracket and an induction piece installed on the bracket.

[0015] Specifically, the grinding component includes a first moving component, a first moving plate installed on the first moving component, a second moving plate movably installed on the first moving plate through a second moving component, a grinding machine installed on the second moving plate, and a grinding block installed on the grinding machine.

[0016] The beneficial effects of the present invention are: This device can grind several tabs that are not on the same horizontal line, and at the same time can grind different planes of the tabs according to requirements. Description of the Drawings

[0017] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. In the drawings: Figure 1 is the three-dimensional view of the workpiece; Figure 2 is the top view of the present invention; Figure 3 is the three-dimensional view of the present invention without the grinding component; Figure 4 is the top view of the grinding component of the present invention; The reference numerals in the figure are: 1, conveyor belt; 2, tooling; 3, induction component; 4, positioning component; 5, grinding component; 6, rotating component; 7, brushing and rotating device; 8, drying device; 201, base; 202, gear 1; 203, mounting plate; 204, positioning block; 205, positioning groove; 301, bracket; 302, induction component; 401, slide cylinder; 402, Y-type plate; 403, roller; 501, grinding machine; 502, grinding block; 503, moving plate 2; 504, moving plate 1; 505, moving component 2; 601, gear 2; 602, moving component 3; 603, chassis. DETAILED DESCRIPTION

[0018] The internal structure of lithium-ion batteries is mainly divided into four types according to their production methods: normal structure, middle-ear structure, multi-ear structure, and stacked structure. In the normal structure, the positive and negative electrodes have only one ear, which is located at one end of the pole piece and is made by winding; the middle-ear structure has the ear located in the middle of the pole piece, which is generally processed by laser cleaning, interval coating, tape, etc., and the battery has a small internal resistance and good rate performance; the multi-ear wound pole piece has multiple ears, and the position of the ears varies according to the design, the battery resistance is smaller, and the battery rate performance is better; the stacked battery is made by cutting the pole piece into a specific shape and folding the positive and negative electrodes alternately. There is an ear in each layer, and the battery rate performance of this structure is the best. Therefore, not all ears of lithium-ion batteries are located on the same horizontal line.

[0019] like Figure 1 As shown in the figure, the tabs are not located on the same horizontal line, and there is a certain height difference. The design of this device can grind the tabs in the above situation; at the same time, due to different connection conditions, the surfaces to be polished are also different, so a rotating component is designed to rotate the workpiece to facilitate grinding the planes of the tabs in different directions.

[0020] like Figure 2 As shown, the present invention provides a short pole ear grinding device for soft-pack battery cells, including a conveyor belt 1, a tooling 2 transported by the conveyor belt 1, a rotating component 6 and a positioning component 4 respectively located on both sides of the conveyor belt 1, a grinding component 5 located on the same side of the rotating component 6, and induction components 3 are provided on both sides of the conveyor belt 1.

[0021] When the tooling 2 is transported to the position of the sensing component 3 by the conveyor belt 1, the sensing component 3 transmits a signal to start the rotating component 6, which drives the tooling 2 to rotate to a suitable position for grinding, and then starts the positioning component 4, which fixes the position of the tooling 2, and then starts the grinding component 5, which grinds the tabs.

[0022] Please focus on Figure 3The tooling 2 includes a base 201, a gear 202 movably mounted on the base 201, a mounting plate 203 mounted on the gear 202, a plurality of positioning blocks 204 mounted on the mounting plate 203, a positioning groove 205 formed by the plurality of positioning blocks 204, and a workpiece is placed in the positioning groove 205.

[0023] The rotating assembly 6 includes a base frame 603, a bottom plate movably mounted on the base frame 603 via a moving assembly three 602, and a gear two 601 movably mounted on the bottom plate via a motor.

[0024] The positioning assembly 4 includes a slide cylinder 401 , a Y-shaped plate 402 mounted on the slide cylinder 401 , and rollers 403 are symmetrically and movably mounted on the Y-shaped plate 402 .

[0025] The sensing component 3 comprises a bracket 301 and a sensing element 302 mounted on the bracket 301 ; the sensing element 302 is a proximity switch or a photoelectric sensor.

[0026] When the tooling 2 moves to the specified position, the sensing element 302 senses the tooling 2, transmits a signal, and then turns on the moving component three 602. The moving component three 602 pushes the gear two 601, and at the same time turns on the slide cylinder 401. The roller 403 pushes the gear one 202 to press against the gear two 601. The gear two 601 meshes with the gear one 202. Then the motor is turned on, thereby driving the gear one 202 to rotate, and then driving the workpiece to rotate to the specified direction.

[0027] Furthermore, in order to prevent the roller 403 from affecting the meshing state of the gear 1 202, the roller 403 is a polyurethane roller.

[0028] The pressing force F of the slide cylinder 401 on the roller 403 needs to meet two conditions: A. The clamping force F needs to ensure that the force P on the outer diameter of the motor-driven gear 2 601 does not push away the gear 1 202, so F>P is required; Since P=T×(2 / D2), F>T×(2 / D2); where T is the motor torque with a reduction ratio of i: T=T0×i, T0 is the rated torque of the motor (N·m), and D2 is the diameter of gear two 601 (m).

[0029] B. The clamping force F also needs to be avoided from being too large, which will cause the gear 2 601 to be unable to rotate. Therefore, F needs to be smaller than the allowable load force Q of the gear 2 601.

[0030] Since Q = Q0 / L, then F < Q0 / L; where Q0 is the allowable overhanging load of the motor (N·mm), and L is the distance (mm) between the motor mounting surface and the meshing position of gear two 601. Thus, by selecting the slide table cylinder 401 within the range of the cylinder thrust corresponding to the range of the pressing force F, the cylinder thrust applied can meet the above conditions.

[0031] Please refer to Figure 4 , the grinding assembly 5 includes a first moving assembly, a moving plate one 504 mounted on the first moving assembly, a moving plate two 503 movably mounted on the moving plate one 504 through a second moving assembly 505, a grinding machine 501 mounted on the moving plate two 503, and a grinding block 502 mounted on the grinding machine 501.

[0032] Among them, the first moving assembly drives the grinding machine 501 to move vertically, and the second moving assembly 505 drives the second moving assembly 505 to move horizontally.

[0033] When the workpiece position is fixed, turn on the first moving assembly, the second moving assembly 505 and the grinding machine 501, and the grinding block 502 approaches the tab to grind the tab.

[0034] Specifically, the first moving assembly, the second moving assembly 505 and the third moving assembly 602 are all electric linear guides, single-axis robots or electric lead screws, etc.

[0035] The conveyor belt 1, the first moving assembly, the second moving assembly 505, the third moving assembly 602, the slide table cylinder 401, the sensing member 302, the slide table cylinder 401 and the grinding machine 501 are communicatively coupled to the control panel.

[0036] Based on the above device, the present invention also proposes an operation method of using the above-mentioned soft-pack battery cell short tab grinding device, including the following steps: Step 1, the conveyor belt 1 transports the tooling 2, and after reaching the designated position, the sensing assembly 3 senses the position of the tooling 2 and transmits a signal; Step 2, turn on the third moving assembly 602, the third moving assembly 602 pushes gear two 601, and at the same time turn on the slide table cylinder 401, and the roller 403 pushes gear one 202 to press against gear two 601, and gear two 601 meshes with gear one 202; Step 3, turn on the motor, which drives gear one 202 to rotate, and then drives the workpiece to rotate to the designated direction and stop; Step 4, turn on the first moving assembly, the second moving assembly 505 and the grinding machine 501, and the grinding block 502 approaches the tab to grind the tab.

[0037] This device can grind several tabs that are not on the same horizontal line, and at the same time can grind different planes of the tabs according to requirements.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A short tab grinding device for a soft-pack battery cell, comprising a conveyor belt, and the tooling is transported by the conveyor belt; It is characterized in that It further includes a rotating component and a positioning component respectively located on both sides of the conveyor belt, a grinding component located on the same side as the rotating component, and induction components are provided on both sides of the conveyor belt; the rotating component is used to drive the tooling to rotate, and the positioning component is used to position the tooling.

2. The short tab polishing equipment for soft-packed battery cells according to claim 1, characterized in that: The tooling includes a base, a first gear movably installed on the base, a mounting plate installed on the first gear, and a plurality of positioning blocks installed on the mounting plate. A positioning groove is formed by the plurality of positioning blocks, and the workpiece is placed in the positioning groove.

3. A soft-pack battery short tab polishing device according to claim 2, characterized in that: The rotating component includes a chassis, a bottom plate movably installed on the chassis through a third moving component, and a second gear movably installed on the bottom plate through a motor.

4. The short tab polishing equipment for soft-packed battery cells according to claim 3, characterized in that: The positioning component includes a slide cylinder, a Y-shaped plate installed on the slide cylinder, and rollers symmetrically and movably installed on the Y-shaped plate.

5. The short tab polishing equipment for soft-packed battery cells according to claim 4, characterized in that: The pressing force F of the slide cylinder on the rollers needs to meet two conditions: A. The pressing force F needs to ensure that the force P driving the outer diameter of the second gear by the motor will not push away the first gear, so F > P is required; B. The pressing force F also needs to avoid being too large, which may cause the second gear to not rotate, so F needs to be less than the allowable load force Q of the second gear.

6. The short tab polishing equipment for soft-packed battery cells according to claim 5, characterized in that: Since P = T×(2 / D2), so F > T×(2 / D2); where T is the torque of the motor with a reduction ratio of i: T = T0×i, T0 is the rated torque of the motor (N·m), and D2 is the diameter of the second gear (m).

7. A soft-pack battery short tab grinding device according to claim 5 or 6, characterized in that: Since Q = Q0 / L, so F < Q0 / L; where Q0 is the allowable overhanging load of the motor (N·mm), and L is the distance between the motor mounting surface and the meshing position of the second gear (mm).

8. The short tab polishing equipment for soft-packed battery cells according to claim 4, characterized in that: The rollers are polyurethane rollers.

9. The short tab polishing equipment for soft-packed battery cells according to claim 1, characterized in that: The induction component includes a bracket and an induction element installed on the bracket.

10. The short tab polishing equipment for soft-pack battery cells according to claim 1, characterized in that: The grinding component includes a first moving component, a first moving plate installed on the first moving component, a second moving plate movably installed on the first moving plate through a second moving component, a grinding machine installed on the second moving plate, and a grinding block installed on the grinding machine.

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