Negative pressure suction nozzle cleaning device for lithium battery formation

Abstract

The utility model discloses a lithium battery formation negative pressure suction nozzle cleaning device which comprises a connecting rod, a through groove is formed in the connecting rod in the length direction of the connecting rod, and a plurality of dredging rods arranged at intervals are movably connected in the through groove. The dredging rod is fixedly connected with the through groove through a limiting piece. According to the utility model, the plurality of dredging rods are arranged on the connecting rod at intervals, so that the whole row of negative pressure suction nozzles can be cleaned at the same time, the cleaning time is greatly shortened, and the production efficiency is remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of lithium battery production, especially a lithium battery formation negative pressure suction nozzle cleaning device. BACKGROUND

[0002] In the development, trial production and production process of lithium battery, gas is generated in the shell after the lithium battery formation, and the battery swells, so the gas in the battery shell needs to be extracted through a negative pressure suction nozzle. In this process, a small amount of electrolyte will also be extracted, part of the electrolyte will flow back into the battery, and the electrolyte that does not flow back will be left in the buffer cup and the suction nozzle to form crystals, affecting the negative pressure extraction effect; a small amount of gas will be formed during charging and discharging, and the battery that is not well extracted by negative pressure is easy to swell and collide with the equipment, causing the battery to be scrapped due to poor appearance. Therefore, the negative pressure suction nozzle needs to be cleaned regularly. The current cleaning method is to insert a screwdriver into the suction nozzle to chisel out the electrolyte crystals left in the suction nozzle and the buffer cup. This method has certain defects. The negative pressure suction nozzle of the formation process has several, and only one screwdriver can be used to clean the several negative pressure suction nozzles one by one, which is extremely low in efficiency and affects the production efficiency and work schedule; the screwdriver is mostly in the shape of a straight line or a cross, and the sharp blade is easy to scratch the inner wall of the suction nozzle and the buffer cup during the process of chiseling out the crystals. Therefore, providing an efficient, labor-saving, safe and simple disassembly device or technical solution has become the research direction of the utility model. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at providing a lithium battery formation negative pressure suction nozzle cleaning device, which connects a row of interval arranged dredging rods through connecting rods, and can adjust the distance between them to clean the whole row of negative pressure suction nozzles and buffer cups at one time.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0005] The utility model discloses a lithium battery formation negative pressure suction nozzle cleaning device, which comprises a connecting rod, a through groove is formed in the connecting rod along the length direction, and a plurality of interval arranged dredging rods are movably connected in the through groove.

[0006] Further scheme: the top end of the dredging rod is a smooth structure.

[0007] Further scheme: the dredging rod is axially provided with a through air hole, and the bottom of the dredging rod is connected with a gas injection mechanism.

[0008] Further scheme: the limiting piece comprises a base and a boss connected above the base.

[0009] Further scheme: the limiting piece is through from top to bottom, and the inner ring of the limiting piece is screw connected with the dredging rod, and the outer ring is clamped with the through groove.

[0010] Further scheme: further includes detachable connection in the top end of the dredging rod dredging rod head.

[0011] Further scheme: the dredging rod head is at least one of spherical structure, round top conical structure, spiral structure.

[0012] Further scheme: the dredging rod head is screwed with the dredging rod.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model discloses a plurality of interval arrangement's dredging rod is arranged on the connecting rod, can clean the whole row negative pressure suction nozzle simultaneously, greatly reduces the cleaning time, and remarkably improves production efficiency. The smooth structure (such as round top conical, spherical, etc.) is adopted at the top end of the dredging rod, avoids the scratch of sharp edge to the inner wall of suction nozzle and buffer cup, reduces the equipment wear and tear, prolongs the service life of equipment. The limiting piece installed at the bottom of the dredging rod is not only used for fixing the dredging rod, but also can limit the insertion depth of the dredging rod, prevents the excessive insertion of the dredging rod in the negative pressure suction nozzle due to improper operation, thereby avoiding damaging the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the front view of the utility model;

[0016] Figure 2 It is the structural schematic view of the dredging rod and limiting piece in the utility model;

[0017] Figure 3 It is the side sectional view of the connecting rod in the utility model;

[0018] Figure 4 It is the working schematic view of the utility model;

[0019] In the drawing: 1-connecting rod, 11-through slot, 2-dredging rod, 21-smooth structure, 3-limiting piece, 31-base, 32-convex table, 4-negative pressure suction nozzle, 5-electrolyte buffer cup. DETAILED DESCRIPTION

[0020] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings of the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor are within the protection scope of the utility model.

[0021] In the description of the utility model, it needs to explain, the terms "upper", "lower", "left", "right", "internal", "external" and so on indicate the orientation or position relation is based on the orientation or position relation shown in the drawing, or it is the orientation or position relation that the utility model product uses usually, just is for the convenience of describing the utility model and simplifying the description, and cannot indicate or imply that the indicated device or element must have a particular orientation, construct and operate in a particular orientation, therefore cannot be understood as the limitation to the utility model.

[0022] Please refer to Figures 1-3 In the embodiment, a lithium battery formation negative pressure suction nozzle cleaning device, including connecting rod 1, connecting rod 1 is provided with through groove 11 along its length direction, a plurality of interval arrangement's dredging rod 2 is movably connected in through groove 11;Dredging rod 2 and through groove 11 are fixedly connected by limiting piece 3.

[0023] Further, the connecting rod 1 is provided with a scale mark, and the scale mark includes several conventional electrolyte buffer cup 5 interval marks, so as to facilitate the adjustment of the dredging rod 2 during use.

[0024] Further, the top end of the dredging rod 2 is a smooth structure 21. The smooth structure 21 has no sharp corners to prevent scratching the inner wall of the buffer cup.

[0025] Further, the dredging rod 2 is axially provided with a through air hole, and the bottom of the dredging rod 2 is connected with the air injection mechanism through a hose. During the cleaning process, compressed air can be injected into the negative pressure suction nozzle 4 and the buffer cup 5, and the impact force of the airflow can more effectively remove the residual electrolyte crystals, further improving the cleaning effect.

[0026] Further, the limiting piece 3 includes a base 31 and a boss 32 connected above the base 31. The outer periphery of the base 31 is clamped in the through groove 11 and slides back and forth under limitation, which is used to adjust the interval between the dredging rods 2; the outer diameter of the boss 32 is not less than the inner diameter of the negative pressure suction nozzle 4, which is used to limit the depth of the dredging rod 2 inserted into the buffer cup 5, so as to avoid damaging the inner wall of the buffer cup 5.

[0027] Further, the limiting piece 3 is through from top to bottom, and the inner circle of the base 31 has a thread and is threadedly connected with the bottom end of the dredging rod 2. The outer periphery of the base 31 is clamped in the through groove 11. When sufficient external force is applied, the base 31 can slide relatively in the through groove 11.

[0028] In other embodiments, a dredging rod head is further threadedly connected to the top end of the dredging rod 2. The dredging rod head is at least one of a spherical structure, a dome-shaped structure and a spiral structure. By replacing the dredging rod head, more complex cleaning scenes can be adapted, and the versatility is further improved.

[0029] Please continue to refer to Figure 4The utility model discloses when using, first according to the electrolyte buffer cup 4's interval size, quantity and size, select the proper quantity and length's dredging pole 2, adjust the position of dredging pole 2 one by one. The device is placed below the formation negative pressure suction nozzle 5 to be cleaned, moves upward, makes dredging pole 2 thrust into buffer cup 4, uses the tip of dredging pole 2 to chisel electrolyte crystallization in buffer cup 4 and negative pressure suction nozzle 5. When the formation negative pressure equipment of other model needs to be cleaned, force makes base 31 slide and be clamped in through groove 11, and the interval of dredging pole 2 is adapted to the interval of buffer cup 4.

[0030] Although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the specification is described in this way only for clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

[0031] Therefore, the above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application; that is, various equivalent transformations made within the scope of the claims of the present application are within the protection scope of the claims of the present application.

Claims

1. A lithium battery formation negative pressure nozzle cleaning device, characterized in that, The utility model relates to a kind of dredging rod, including connecting rod (1), the connecting rod (1) is opened with through slot (11) along its length direction, and a plurality of interval arrangement dredging rod (2) are movably connected in the through slot (11);The dredging rod (2) is fixedly connected with through limiting piece (3) by through slot (11).

2. The lithium battery formation negative pressure nozzle cleaning device according to claim 1, wherein, The top end of the dredging rod (2) is a smooth structure (21).

3. The lithium battery formation negative pressure nozzle cleaning device of claim 1, wherein, The dredging rod (2) is axially opened with through air hole, and the bottom of the dredging rod (2) is connected with jet mechanism.

4. The lithium battery formation negative pressure nozzle cleaning device of claim 1, wherein, The limiting piece (3) includes a base (31), a boss (32) connected above the base (31).

5. The lithium battery formation negative pressure nozzle cleaning device of claim 1, wherein, The limiting piece (3) is through from top to bottom, and the inner ring of the limiting piece (3) is screw-connected with the dredging rod (2), and the outer ring is clamped with the through slot (11).

6. The lithium battery formation negative pressure nozzle cleaning device of claim 1, wherein, It also includes a dredging rod head detachably connected to the top end of the dredging rod (2).

7. The lithium battery formation negative pressure nozzle cleaning device of claim 6, wherein, The dredging rod head is at least one of a spherical structure, a dome conical structure or a spiral structure.

8. The lithium battery formation negative pressure nozzle cleaning device of claim 6, wherein, The dredging rod head is screw-connected with the dredging rod (2).

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