Lithium ion storage battery ultrasonic welding dust collection tool

Abstract

The utility model provides a lithium ion storage battery ultrasonic welding dust collection tool which is characterized in that the tool comprises a table top (1), a first dust collection device (2) and a second dust collection device assembly (3), the table top (1) is fixed to ultrasonic welding equipment, and an operation platform for lithium ion storage battery ultrasonic welding is provided; the first dust collection device (2) is fixed above the table top (1) and provides a first dust collection channel; the second dust collection device assembly (3) is fixed above the table top (1) and is provided with a second dust collection channel and a pole piece set positioning device, and the second dust collection device (5) and the first dust collection device (2) are located on the two sides of the pole lug ultrasonic welding portion respectively so as to remove dust generated by ultrasonic welding. According to the utility model, while the product quality, reliability and safety are improved, unqualified products with poor pile charge retention performance and short circuit caused by dust are reduced, the qualified rate of the product production process is improved, and the economic benefit is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding tooling, in particular to a dust collection tooling for ultrasonic welding of lithium ion batteries. Background Art

[0002] Square lithium-ion batteries are mainly composed of pole piece groups, structural parts and electrolytes. The pole piece group is composed of positive pole pieces, negative pole pieces and diaphragms repeatedly stacked in a "Z" shape. It is the core of the battery and determines the basic characteristics of the battery. The structural parts are mainly composed of battery covers and battery shells. The positive and negative poles are the external interfaces for the output or input of battery energy. Ultrasonic welding is used to achieve mechanical interlocking and metal bonding or fusion with the pole piece group to form a tight and reliable connection, so that the performance of the pole piece group can be fully utilized. Therefore, the ultrasonic welding process is particularly important in the production process of lithium-ion batteries.

[0003] At present, square lithium-ion batteries use a multi-layer ultra-thin pole piece design. Due to the large number of pole piece layers, the feedback power during the ultrasonic welding of the pole piece group and the pole is large, which may cause fine metal splashes to enter the battery stack due to the high-frequency friction. Since there is no dust collection measure during the welding process, fine metal splashes may enter the battery stack. Although the battery stack will be dusted before entering the shell after ultrasonic welding, there may still be a small amount of metal dust remaining inside the battery stack. On the one hand, it will cause the charge retention performance of some battery stacks to be poor or even short-circuited, reducing the qualified rate of the product production process and affecting the economic benefits; on the other hand, it will only show micro-short circuits or short circuits after multiple charge and discharge cycles, which poses a great safety hazard. Therefore, it is of great practical significance to develop a real-time dust collection tool during ultrasonic welding. Utility Model Content

[0004] The purpose of the utility model is to provide a dust collection tool for ultrasonic welding of lithium-ion batteries, which can remove dust generated during the ultrasonic welding of lithium-ion batteries, thereby improving product quality and reliability and safety; it can reduce defective products caused by battery stack charge retention performance and short circuits due to dust, thereby improving the qualification rate of the product production process and improving economic benefits.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A lithium-ion battery ultrasonic welding dust suction tool, characterized in that it includes a table top 1, a first dust suction device 2, and a second dust suction device assembly 3. The table top 1 is fixed to the ultrasonic welding equipment, providing an operating platform for the ultrasonic welding of lithium-ion batteries; the first dust suction device 2 is fixed above the table top 1, providing a first dust suction channel; the second dust suction device assembly 3 is fixed above the table top 1, including a bottom plate 4, a second dust suction device 5, a cover positioning plate 6, an insulating pad 7, a first adjustment plate 8 and a second adjustment plate 9, providing a second dust suction channel and a pole piece group positioning device, and the second dust suction device 5 and the first dust suction device 2 are respectively located on both sides of the pole ear ultrasonic welding position to remove dust generated by ultrasonic welding.

[0007] Furthermore, the table top 1 is provided with a flat key groove 101 to facilitate fixing the flat key 14, and the flat key 14 is used for rapid positioning and placement of the second dust suction device assembly 3. The table top 1 is provided with a first groove 102 to facilitate placement of the fixed electrode 15 of the ultrasonic welding equipment.

[0008] Furthermore, the first dust suction device 2 is fixed above the table top 1 by screws, providing a first dust suction channel, one end of which is a first dust inlet port 201, which can be aligned with the ultrasonic welding part of the tab, and the other end is a first dust suction pipe connection port 202, which has a dust suction equipment connection port, and is connected to the dust suction equipment through the first dust suction pipe connection port 202, thereby achieving the effect of negative pressure dust suction.

[0009] Furthermore, the base plate 4 is provided with a notch 401 for facilitating the placement of a fixed electrode 15 of an ultrasonic welding device; a second groove 402 is provided on both the front and back sides, and can be quickly positioned and installed through a flat key 14 on the welding table; the base plate 4 is provided with 6 threaded holes for fixing a second dust suction device 5, a cover positioning plate 6, an insulating pad 7, a first adjustment plate 8 and a second adjustment plate 9.

[0010] Furthermore, the second dust suction device 5 is fixed to the base plate 4 by screws, providing a second dust suction channel, one end of which is a second dust inlet port 501, aimed at the ultrasonic welding part of the tab, and the other end is a second dust suction pipe connection port 502, which has a dust suction equipment connection port, and is connected to the dust suction equipment through the second dust suction pipe connection port 502, thereby achieving the effect of negative pressure dust suction, and the second dust suction device 5 and the first dust suction device 2 are respectively located on both sides of the ultrasonic welding part of the tab to remove the dust generated by ultrasonic welding.

[0011] Furthermore, the cover positioning piece 6 is fixed to the bottom plate 4 by screws and is provided with a third groove 601 for positioning the battery cover.

[0012] Furthermore, the first adjustment sheet 8 is placed between the bottom plate 4 and the cover positioning sheet 6 to adjust the height of the battery cover to match the height of the fixed electrode 15 of the ultrasonic welding equipment, so as to facilitate the ultrasonic welding operation.

[0013] Furthermore, the insulating pad 7 is placed on the metal bottom plate 4 to isolate the pole piece group 10 from the metal bottom plate 4 and play an insulating role.

[0014] Furthermore, the second adjustment sheet 9 is placed between the bottom plate 4 and the insulating pad 7 to adjust the height of the electrode assembly to match the height of the battery cover, so as to facilitate ultrasonic welding operations.

[0015] In summary, compared with the prior art, the vacuum cleaner for ultrasonic welding of lithium-ion batteries provided by the utility model has the following beneficial effects:

[0016] The advantages of the utility model are as follows:

[0017] 1 The dust collecting tool of the utility model can remove the dust generated during the ultrasonic welding process of lithium-ion batteries, thereby improving product quality and reliability and safety.

[0018] 2 The tooling of the utility model can reduce defective products due to poor charge retention performance and short circuit of the battery stack caused by dust, thereby improving the qualified rate of the product production process and improving economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0020] Figure 1 This is a schematic structural diagram of a lithium-ion battery ultrasonic welding dust collection tooling according to an embodiment of the utility model;

[0021] Figure 2 This is a schematic diagram of the table structure described in an embodiment of the utility model;

[0022] Figure 3 This is a schematic structural diagram of a first dust collecting device according to an embodiment of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the second dust collecting device assembly according to an embodiment of the utility model;

[0024] Figure 5 This is a disassembled diagram of the second dust collecting device assembly structure according to an embodiment of the utility model;

[0025] Figure 6This is a schematic diagram of ultrasonic welding described in an embodiment of the utility model.

[0026] Description of reference numerals:

[0027] 1. Table; 101. Flat key groove; 102. Table groove; 2. First dust suction device; 201. First dust inlet; 202. First dust suction pipe connection port; 3. Second dust suction device assembly; 4. Bottom plate; 401. Notch; 402. Bottom plate groove; 5. Second dust suction device; 501. Second dust inlet; 502. Second dust suction pipe connection port; 6. Cover positioning piece; 601. Cover positioning groove; 7. Insulating pad; 8. First adjustment piece; 9. Second adjustment piece; 10. Pole piece group; 11. Pole ear; 12. Battery cover; 13. Pole column; 14. Flat key; 15. Fixed electrode. DETAILED DESCRIPTION

[0028] The following will be combined with the accompanying drawings in the embodiment of the utility model Figure 1 to Figure 6 , the technical scheme, structural features, objectives achieved and effects in the embodiments of the utility model are described in detail.

[0029] It should be noted that the drawings are in a very simplified form and use non-precise proportions. They are only used to conveniently and clearly assist in explaining the implementation methods of the utility model, and are not used to limit the conditions for the implementation of the utility model. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed by the utility model without affecting the efficacy and purpose that can be achieved by the utility model.

[0030] It should be noted that, in the present invention, relational terms such as "one end" and "the other end" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "include" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only the elements explicitly listed, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0031] Figure 1 This is a schematic diagram of the structure of a lithium-ion battery ultrasonic welding dust collection tooling according to an embodiment of the utility model. Figure 1 As shown, the tooling consists of a table top 1, a first dust suction device 2, a second dust suction device assembly 3, etc.

[0032] Figure 2 This is a schematic diagram of the structure of the table 1 according to the embodiment of the utility model. Figure 2 As shown, the table 1 is fixed to the ultrasonic welding equipment by screws, providing an operating platform for ultrasonic welding of lithium-ion batteries. The table 1 is provided with a flat key slot 101 to facilitate fixing the flat key 14, which is used for quickly positioning and placing the second dust collecting device assembly 3; the table 1 is also provided with a first groove 102 to facilitate placing the fixed electrode 15 of the ultrasonic welding equipment. The table 1 can be made of metal materials such as stainless steel, copper, and aluminum.

[0033] Figure 3 This is a schematic diagram of the structure of the first dust collecting device according to an embodiment of the utility model. Figure 3 As shown, the first dust suction device 2 is fixed on the table 1 by screws, providing a first dust suction channel, one end of which is a first dust inlet 201, which can be aligned with the ultrasonic welding part of the tab, and the other end is a first dust suction pipe connection port 202, which has a dust suction device connection port, and is connected to the dust suction device through the first dust suction pipe connection port 202, thereby achieving a negative pressure dust suction effect. The first dust suction device 2 can be made of metal materials such as stainless steel, copper, and aluminum.

[0034] Figure 4 This is a schematic diagram of the structure of the second dust collection device assembly according to an embodiment of the utility model. Figure 4 As shown, the second dust suction device assembly 3 is fixed on the table 1, including a base plate 4, a second dust suction device 5, a cover positioning plate 6, an insulating pad 7, a first adjustment plate 8 and a second adjustment plate 9, etc., providing a second dust suction channel and a pole piece group positioning device.

[0035] The first adjusting piece 8 is placed between the bottom plate 4 and the cover positioning piece 6 to adjust the height of the battery cover to match the height of the ultrasonic welding device fixing electrode 15, so as to facilitate the ultrasonic welding operation. The first adjusting piece 8 can be made of non-metallic materials such as silicone rubber and epoxy glass laminate.

[0036] The insulating pad 7 is placed on the metal bottom plate 4 to isolate the electrode group 10 from the metal bottom plate 4 and play an insulating role. The insulating pad 7 can be made of non-metallic materials such as silicone rubber and epoxy glass laminate.

[0037] The second adjusting piece 9 is placed between the bottom plate 4 and the insulating pad 7 to adjust the height of the electrode group to match the height of the battery cover for easy ultrasonic welding. The second adjusting piece 9 can be made of non-metallic materials such as silicone rubber and epoxy glass laminate.

[0038] Figure 5 This is a disassembled diagram of the second dust collecting device assembly structure according to an embodiment of the utility model. Figure 5As shown, the bottom plate 4 is provided with a notch 401 for placing the fixed electrode 15 of the ultrasonic welding equipment; the front and back sides are provided with a second groove 402, which can be quickly positioned and installed through the flat key 14 on the welding table; there are 6 threaded holes for fixing the second dust suction device 5, the cover positioning plate 6, the insulating pad 7, the first adjustment plate 8 and the second adjustment plate 9. The bottom plate 4 can be made of metal materials such as stainless steel, copper, and aluminum.

[0039] The second dust suction device 5 is fixed to the bottom plate 4 by screws, providing a second dust suction channel, one end of which is a second dust inlet 501, which is aligned with the ultrasonic welding part of the tab, and the other end is a second dust suction pipe connection port 502, which has a dust suction device connection port, and is connected to the dust suction device through the second dust suction pipe connection port 502, thereby achieving a negative pressure dust suction effect. The second dust suction device 5 and the first dust suction device 2 are respectively located on both sides of the ultrasonic welding part of the tab to fully remove the dust generated by ultrasonic welding. The second dust suction device 5 can be made of metal materials such as stainless steel, copper, and aluminum.

[0040] The cover positioning piece 6 is fixed to the bottom plate 4 by screws and is provided with a third groove 601 for positioning the battery cover. The cover positioning piece 6 can be made of metal materials such as stainless steel, copper, and aluminum.

[0041] Figure 6 This is a schematic diagram of ultrasonic welding according to an embodiment of the present utility model. Figure 6 The main view and top view shown in the figure, the main working process of ultrasonic welding described in the embodiment of the utility model is as follows: 1) After the ultrasonic welding dust suction tool is initially installed, the battery cover 12 is placed in the cover positioning groove 601 in the cover positioning plate 6, and the pole 13 is placed above the fixed electrode 15 of the welding equipment. The height of the battery cover is adjusted by the first adjusting plate 8 so that the pole 13 and the fixed electrode 15 are in contact and the height is adapted; 2) The pole piece group 10 is placed above the second dust suction device assembly 3, and the height of the pole piece group is adjusted by the second adjusting plate 9 so that the pole ear 11 and the pole 13 are in contact and the height is adapted; 3) After the ultrasonic welding dust suction tool is installed in place, a dust suction device is connected to the first dust suction pipe connection port 202 and the second dust suction pipe connection port 502 respectively; 4) After turning on the two dust suction devices, the ultrasonic welding operation of the lithium-ion battery can be implemented. During the ultrasonic welding process, the first dust inlet 201 and the second dust inlet 501 are simultaneously aimed at the ultrasonic welding part of the tab, and negative pressure suction is performed on the dust generated during the ultrasonic welding process, thereby fully removing the dust generated during the ultrasonic welding process.

[0042] The utility model can improve product quality and reliability and safety, and at the same time reduce defective products due to poor charge retention performance of battery stacks and short circuits caused by dust, thereby increasing the qualified rate of the product production process and improving economic benefits.

[0043] It should be noted that the above is only an illustrative description and explanation of the present invention, and those skilled in the art should understand that any modification and replacement of the present invention belongs to the protection scope of the present invention.

Claims

1. A lithium-ion battery ultrasonic welding dust collection tool, characterized in that: The invention comprises a table top (1), a first dust suction device (2), and a second dust suction device assembly (3); the table top (1) is fixed to ultrasonic welding equipment, providing an operating platform for ultrasonic welding of lithium-ion batteries; the first dust suction device (2) is fixed above the table top (1), providing a first dust suction channel; the second dust suction device assembly (3) is fixed above the table top (1), comprising a bottom plate (4), a second dust suction device (5), a cover positioning plate (6), an insulating pad (7), a first adjustment plate (8), and a second adjustment plate (9), providing a second dust suction channel and a pole piece group positioning device; the second dust suction device (5) and the first dust suction device (2) are respectively located on both sides of the pole piece ultrasonic welding position to remove dust generated by ultrasonic welding.

2. A lithium-ion battery ultrasonic welding dust removal tool according to claim 1, characterized in that: The table top (1) is provided with a flat key groove (101) for fixing a flat key (14), the flat key (14) being used for quickly positioning and placing a second dust collecting device assembly (3), and the table top (1) is provided with a first groove (102) for placing a fixed electrode (15) of an ultrasonic welding device.

3. The lithium-ion battery ultrasonic welding dust collection tool according to claim 1, characterized in that: The first dust suction device (2) is fixed to the top of the table (1) by means of screws, and provides a first dust suction channel, one end of which is a first dust inlet (201) that can be aligned with the ultrasonic welding portion of the tab, and the other end is a first dust suction pipe connection port (202) having a dust suction device connection port, and is connected to the dust suction device via the first dust suction pipe connection port (202), thereby achieving a negative pressure dust suction effect.

4. The lithium-ion battery ultrasonic welding dust collection tool according to claim 1, characterized in that: The bottom plate (4) is provided with a notch (401) for accommodating the fixed electrode (15) of the ultrasonic welding equipment; second grooves (402) are provided on both the front and back sides, and can be quickly positioned and installed through a flat key (14) on the welding table; the bottom plate (4) is provided with 6 threaded holes for fixing the second dust suction device (5), the cover positioning plate (6), the insulating pad (7), the first adjustment plate (8) and the second adjustment plate (9).

5. The lithium-ion battery ultrasonic welding dust collection tool according to claim 1, characterized in that: The second dust suction device (5) is fixed to the base plate (4) by screws, providing a second dust suction channel, one end of which is a second dust inlet (501) aimed at the ultrasonic welding part of the tab, and the other end is a second dust suction pipe connection port (502), which has a dust suction device connection port and is connected to the dust suction device through the second dust suction pipe connection port (502), thereby achieving a negative pressure dust suction effect. The second dust suction device (5) and the first dust suction device (2) are respectively located on both sides of the ultrasonic welding part of the tab to remove dust generated by ultrasonic welding.

6. The lithium-ion battery ultrasonic welding dust collection tool according to claim 1, characterized in that: The cover positioning piece (6) is fixed to the bottom plate (4) by means of screws and is provided with a third groove (601) for positioning the battery cover.

7. The lithium-ion battery ultrasonic welding dust collection tool according to claim 1, characterized in that: The first adjustment sheet (8) is placed between the bottom plate (4) and the cover positioning sheet (6) and is used to adjust the height of the battery cover to match the height of the fixed electrode (15) of the ultrasonic welding equipment, thereby facilitating the ultrasonic welding operation.

8. The lithium-ion battery ultrasonic welding dust removal tool according to claim 1, characterized in that: The insulating pad (7) is placed on the metal bottom plate (4) and is used to isolate the pole piece group (10) from the metal bottom plate (4) to play an insulating role.

9. The lithium-ion battery ultrasonic welding dust collection tool according to claim 1, characterized in that: The second adjustment sheet (9) is placed between the bottom plate (4) and the insulating pad (7) and is used to adjust the height of the electrode assembly to match the height of the battery cover, thereby facilitating ultrasonic welding operations.

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