CN218569173U

CN218569173U - Liquid injection device of lithium battery

Info

Publication number: CN218569173U
Application number: CN202222510033.3U
Authority: CN
Inventors: 邓翔宇; 刘俊; 陈建华
Original assignee: Lanzhou Chuxin New Material Co ltd
Current assignee: Lanzhou Chuxin New Material Co ltd
Priority date: 2022-09-22
Filing date: 2022-09-22
Publication date: 2023-03-03
Anticipated expiration: 2032-09-22

Abstract

The utility model discloses a liquid injection device of a lithium battery, which comprises a shell and a base, wherein the shell is arranged at the upper end of the base, a moving mechanism is arranged on the lower end surface inside the shell, a sliding block is arranged at the lower end of the moving mechanism, a liquid injection mechanism is arranged at the lower end of the sliding block, a conveyor belt is arranged inside the shell at the upper end of the base, the lithium battery is arranged at the upper end of the conveyor belt, and the liquid injection mechanism comprises an inner pipe, an outer pipe and a liquid injection nozzle; the utility model discloses simple structure, reasonable in design will annotate the inside that the liquid mouth inserted the lithium cell during use, and the vacuum pump is through vacuum tube with the inside to taking out of lithium cell to suitable vacuum, opens the check valve of outer tube lower extreme, and electrolyte flows through from the outer tube and annotates the liquid mouth and get into the lithium cell, accomplishes annotating the liquid of lithium cell, can greatly simplify evacuation and annotate liquid equipment through annotating liquid mechanism, and the in-process need not to switch, has guaranteed to annotate the seal of liquid in-process, avoids outside air to influence electrolyte activity.

Description

Liquid injection device of lithium battery

Technical Field

The utility model relates to a lithium ion battery technical field specifically is a priming device of lithium cell.

Background

The battery generally comprises a positive electrode, a negative electrode and an electrolyte, wherein the electrolyte plays a role in transmitting ions between the positive electrode and the negative electrode, and has important influences on the capacity, the working range, the cycle performance, the safety performance and the like of the battery, so that the electrolyte is particularly important to be injected into the battery in the preparation process of the battery.

The defects of the prior art are as follows:

when the current lithium battery liquid injection equipment is used, the lithium battery needs to go through the processes of feeding, liquid injection, blanking, recycling and the like, the processes are multiple, the efficiency is low, the structural requirement on the liquid injection equipment is high, the liquid injection equipment is separated from the vacuum pumping equipment, the liquid injection mode is easy to cause unsatisfactory sealing effect, and air is easy to enter and pollute electrolyte;

in addition, current lithium battery priming device is when annotating the liquid, and it is higher to the dimensional requirement of lithium cell, and the inconvenient regulation that carries on height and angle need be fixed to annotating liquid equipment manual through the operator, avoids the lithium cell to take place to remove when annotating the liquid, inevitably leads to operator's work load to increase, and is not convenient for load the lithium cell fast, and efficiency is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a priming device of lithium cell to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a liquid injection device of a lithium battery comprises a shell and a base, wherein the shell is arranged at the upper end of the base, a moving mechanism is arranged on the lower end face inside the shell, a sliding block is arranged at the lower end of the moving mechanism, a liquid injection mechanism is arranged at the lower end of the sliding block, a conveying belt is arranged inside the shell at the upper end of the base, and a lithium battery is arranged at the upper end of the conveying belt;

annotate liquid mechanism including:

the inner pipe is arranged at the lower end of the sliding block, an evacuation pipe is arranged inside the inner pipe, and one end of the evacuation pipe is connected with a vacuum pump;

the outer pipe is arranged on the outer side of the inner pipe in a surrounding mode, the lower end of the outer pipe is provided with a liquid injection port, and a one-way valve is arranged on the liquid injection port;

the liquid injection nozzle is arranged at the lower end of the inner pipe, and sealing rubber pads are arranged on two sides of the liquid injection nozzle.

Preferably, the moving mechanism includes:

the two telescopic rods are arranged on the lower end face of the shell;

the gear plate is arranged between the two telescopic rods, a sliding groove is formed in the gear plate, two sliding plates are connected to two sides of the sliding groove in a sliding mode, and the sliding blocks are arranged at the lower ends of the two sliding plates;

the gear is meshed with the gear plate, a connecting shaft penetrates through the inside of the gear through the hole, and two ends of the connecting shaft are connected with the two sliding plates respectively.

Preferably, the upper end of the outer tube is inserted with a transfusion tube through a through hole, the other end of the transfusion tube is connected with a transfusion pump, and the transfusion pump is arranged at the upper end of the base.

Preferably, the upper end of the sealing rubber pad is provided with a pressure gauge for measuring the pressure of the inner pipe.

Preferably, a fixed sealing ring is sleeved on the outer side of the vacuumizing tube, and the fixed sealing ring is tightly attached to the inner wall of the inner tube.

Preferably, a lyophobic film is arranged between the inner tube and the liquid injection nozzle.

Preferably, limiting blocks are arranged on the two sides of the lithium battery on the conveying belt.

Compared with the prior art, the beneficial effects of the utility model are that:

1. this priming device of lithium cell, through being provided with the notes liquid mechanism, the notes liquid mechanism includes the inner tube, outer tube and notes liquid mouth, the inner tube is inside to be provided with vacuum tube, it sets up the lower extreme at the inner tube to annotate the liquid mouth, insert the inside of annotating the liquid mouth into the lithium cell during use, the vacuum pump is through the inside evacuation tube with the lithium cell to suitable vacuum, open the check valve of outer tube lower extreme, electrolyte flows through annotating the liquid mouth from annotating the liquid mouth and gets into the lithium cell, accomplish the notes liquid of lithium cell, can greatly simplify evacuation and notes liquid equipment through annotating the liquid mechanism, need not to switch over in the process, the leakproofness in the notes liquid process has been guaranteed, avoid outside air to influence the activity of electrolyte;

2. this priming device of lithium cell, through being provided with moving mechanism, moving mechanism is including two telescopic links, gear plate and gear, gear plate sets up between two telescopic links, when the gear is at gear plate upper level motion, the connecting axle through the bearing installation can drive sliding plate horizontal motion, vertical motion can be accomplished to the telescopic link, can accomplish the regulation of co-altitude and angle through moving mechanism and adapt to the lithium cell of co-size, make things convenient for the operator, improve the efficiency of annotating the liquid process.

Drawings

Fig. 1 is an overall front view of the present invention;

FIG. 2 is a structural diagram of a liquid injection mechanism of the present invention;

fig. 3 is a top view of the gear of the present invention;

fig. 4 is an enlarged schematic view of a portion a in fig. 2 according to the present invention.

In the figure: 1. a housing; 2. a base; 21. a conveyor belt; 3. a moving mechanism; 31. two telescopic rods; 32. a gear plate; 321. a chute; 322. two sliding plates; 33. a gear; 331. a connecting shaft; 34. a slider; 4. a liquid injection mechanism; 41. an inner tube; 411. vacuumizing a tube; 412. a vacuum pump; 413. fixing the sealing ring; 42. an outer tube; 421. a liquid injection port; 422. a one-way valve; 423. a transfusion tube; 424. an infusion pump; 43. a liquid injection nozzle; 431. sealing the rubber pad; 432. a pressure gauge; 5. a lithium battery.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixed connections, arrangements, detachable connections, arrangements, or integral connections and arrangements. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1-4, the present invention provides a liquid injection device for a lithium battery, which comprises: a liquid injection device of a lithium battery comprises a shell 1 and a base 2, wherein a moving mechanism 3 is installed on the lower side of the shell 1, a sliding block 34 is welded at the lower end of the moving mechanism 3, a liquid injection mechanism 4 is installed at the lower end of the sliding block 34, a conveying belt 21 is installed inside the shell 1 at the upper end of the base 2, and a lithium battery 5 is placed at the upper end of the conveying belt 21;

annotate liquid mechanism 4 including:

an inner tube 41, wherein the inner tube 41 is fixed at the lower end of the sliding block 34, an evacuation tube 411 is arranged inside the inner tube 41, and the other end of the evacuation tube 411 is connected with a vacuum pump 412;

the outer pipe 42 is fixed on the outer side of the inner pipe 41 in a surrounding manner, the lower end of the outer pipe 42 is provided with a liquid injection port 421, and the liquid injection port 421 is provided with a one-way valve 422;

annotate liquid mouth 43, annotate the welding of liquid mouth 43 at the lower extreme of inner tube 41, annotate the both sides of liquid mouth 43 and all be fixed with sealing rubber pad 431, annotate liquid mouth 43 and set up the lower extreme at inner tube 41, will annotate liquid mouth 43 and insert the inside of lithium cell 5, start the vacuum pump 412 of connecting in evacuation pipe 411 one end, treat that the pressure in inner tube 41 is qualified after, open the check valve 422 that is located the outer tube 42 lower extreme, the electrolyte in the outer tube 42 flows through annotating liquid mouth 421 and annotates the inside that liquid mouth 43 entered into lithium cell 5 at last, the completion is annotated.

The moving mechanism 3 includes:

the two telescopic rods 31 are welded on the lower end face of the shell 1;

the gear plate 32 is welded between the two telescopic rods 31, a sliding groove 321 is formed in the gear plate 32, two sliding plates 322 are connected to two sides of the sliding groove 321 in a sliding mode, and the sliding block 34 is welded at the lower ends of the two sliding plates 322;

the gear 33, the gear 33 is engaged with the gear plate 32, a connecting shaft 331 is fixed in the gear 33 through the middle of the hole, two ends of the connecting shaft 331 are respectively welded to the two sliding plates 322, the telescopic rod 31 can move in the vertical direction, because the gear 33 is engaged with the gear plate 32, when the gear 33 rotates on the gear plate 32, the connecting shafts 331 installed on two sides of the gear 33 also move along with the gear 33, the connecting shafts 331 drive the sliding plates 322 to move together, the sliding plates 322 slide in the sliding grooves 321 formed in the gear plate 32, so that the vertical and horizontal displacement of the moving mechanism 3 is completed, and the liquid injection mechanism 4 located below the moving mechanism 3 can inject liquid into lithium batteries 5 with different sizes.

The upper end of the outer tube 42 is provided with a perfusion tube 423 in a plug-in connection mode through a through hole, the other end of the perfusion tube 423 is connected with a perfusion pump 424, the perfusion pump 424 is arranged at the upper end of the base 2, and operators can be further facilitated through the perfusion pump 424.

The upper end of the sealing rubber pad 431 is provided with a pressure gauge 432 for measuring the pressure of the inner tube 41, which can be used to control the degree of vacuum inside the lithium battery 5.

The outside cover of evacuation pipe 411 is equipped with fixed sealing washer 413, and fixed sealing washer 413 is in the inseparable laminating of inner tube 41's inner wall, further guarantees the efficiency at the evacuation in-process.

A lyophobic film is arranged between the inner tube 41 and the liquid injection nozzle 43, so that the electrolyte in the liquid injection nozzle 43 is prevented from being sucked into the inner tube 41 to corrode the inner tube 41.

Be provided with the stopper in lithium cell 5's both sides on conveyer belt 21, can further fix lithium cell 5's position, guarantee to annotate liquid mouth 43 and lithium cell 5's position phase-match.

The working principle of the utility model is as follows:

when the lithium battery electrolyte injection device is used, firstly, the lithium battery 5 is conveyed to the position under the electrolyte injection mechanism 4 by the conveyor belt 21, meanwhile, the limiting blocks positioned at two sides of the lithium battery 5 can prevent the lithium battery 5 from moving left and right, then, the telescopic rod 31 moves downwards to a corresponding height, because the gear 33 is meshed with the gear plate 32 and is connected with the gear plate 32, when the gear 33 rotates on the gear plate 32, the connecting shaft 331 installed at two sides of the gear 33 moves along with the gear plate, the connecting shaft 331 drives the sliding plate 322 to move together, the sliding plate 322 slides in the sliding groove 321 formed in the gear plate 32, the sliding blocks 34 are welded at the lower ends of the two sliding plates 322, the sliding blocks 34 drive the electrolyte injection mechanism 4 to move right above the lithium battery 5, the electrolyte injection nozzle 43 is welded at the lower end of the inner pipe 41, the electrolyte injection nozzle 43 is inserted into the lithium battery 5, the sealing rubber pads 431 at two sides of the injection nozzle 43 can prevent air from entering into the lithium battery 5, the vacuum degree starts the vacuum pump 412 connected at one end of the vacuum tube 411, the outer pipe 432 of the outer pipe 41 is observed, after passing through the electrolyte injection nozzle 422 is qualified, the electrolyte injection nozzle 422 can be conveniently sucked into the lithium battery injection device 41, and the lithium battery injection nozzle 41, and the lithium battery injection device can be conveniently sucked into the infusion tube 41 by the infusion tube 41, and the infusion tube 41.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only the preferred embodiments of the present invention, and is not intended to limit the present invention, and that there may be various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a priming device of lithium cell, includes shell (1) and base (2), its characterized in that: the automatic liquid filling machine is characterized in that the shell (1) is arranged at the upper end of the base (2), the lower end face of the interior of the shell (1) is provided with the moving mechanism (3), the lower end of the moving mechanism (3) is provided with the sliding block (34), the lower end of the sliding block (34) is provided with the liquid filling mechanism (4), the upper end of the base (2) is provided with the conveying belt (21) in the shell (1), and the upper end of the conveying belt (21) is provided with the lithium battery (5);

annotate liquid mechanism (4) including:

the inner tube (41), the inner tube (41) is arranged at the lower end of the sliding block (34), an evacuation tube (411) is arranged inside the inner tube (41), and one end of the evacuation tube (411) is connected with a vacuum pump (412);

the outer pipe (42) is arranged on the outer side of the inner pipe (41) in a surrounding mode, the lower end of the outer pipe (42) is provided with a liquid injection port (421), and a one-way valve (422) is arranged on the liquid injection port (421);

the liquid injection nozzle (43) is arranged at the lower end of the inner pipe (41), and sealing rubber gaskets (431) are arranged on two sides of the liquid injection nozzle (43).

2. The liquid injection device of the lithium battery as claimed in claim 1, wherein: the moving mechanism (3) comprises:

the two telescopic rods (31) are arranged on the lower end face of the shell (1);

the gear plate (32) is arranged between the two telescopic rods (31), a sliding groove (321) is formed in the gear plate (32), two sliding plates (322) are connected to two sides of the sliding groove (321) in a sliding mode, and the sliding block (34) is arranged at the lower ends of the two sliding plates (322);

the gear (33), gear (33) and gear plate (32) meshing are connected, the inside of gear (33) is through seting up the hole and run through and be provided with connecting axle (331), the both ends of connecting axle (331) are connected with two sliding plates (322) respectively.

3. The electrolyte filling device for a lithium battery as claimed in claim 1, wherein: the upper end of outer tube (42) is through seting up through-hole grafting have transfer line (423), the other end of transfer line (423) is connected with transfer pump (424), transfer pump (424) set up the upper end at base (2).

4. The liquid injection device of the lithium battery as claimed in claim 1, wherein: the upper end of the sealing rubber gasket (431) is provided with a pressure gauge (432) for measuring the pressure of the inner pipe (41).

5. The liquid injection device of the lithium battery as claimed in claim 1, wherein: the outside cover of evacuation pipe (411) is equipped with fixed sealing washer (413), fixed sealing washer (413) closely laminates with the inner wall of inner tube (41).

6. The liquid injection device of the lithium battery as claimed in claim 1, wherein: a lyophobic film is arranged between the inner pipe (41) and the liquid injection nozzle (43).

7. The electrolyte filling device for a lithium battery as claimed in claim 1, wherein: and limiting blocks are arranged on the two sides of the lithium battery (5) on the conveyor belt (21).