阅读说明：本技术 一种高效的免擦注液口可直接焊接密封片的电池生产工艺 (Efficient battery production process capable of achieving wiping-free liquid injection port and directly welding sealing sheet ) 是由 黄轶 于 2021-09-02 设计创作，主要内容包括：本发明公开一种高效的免擦注液口可直接焊接密封片的电池生产工艺,在注液口上插入过渡胶嘴,将一次注液及二次注液过程中溢出的电解液留存于过渡胶嘴中,提高电池外壳注液口周围的洁净度。本发明通过在电池外壳的注液口放置过渡胶嘴,并通过过渡胶嘴将电解液注入于电池外壳内,以保证完成注液工作后电池外壳的注液口周围不受电解液污染,从而减少擦拭工序,以此提高整体工作效率,满足提高产能的需求。(The invention discloses a high-efficiency production process of a battery with a wiping-free liquid injection port capable of directly welding a sealing sheet. According to the invention, the transition rubber nozzle is placed at the liquid injection port of the battery shell, and the electrolyte is injected into the battery shell through the transition rubber nozzle, so that the periphery of the liquid injection port of the battery shell is not polluted by the electrolyte after the liquid injection work is finished, and therefore, the wiping process is reduced, the overall working efficiency is improved, and the requirement for improving the productivity is met.)

1. A high-efficiency production process of a battery with a wiping-free liquid injection port capable of being directly welded with a sealing sheet is characterized by comprising the following steps:

step 1: feeding a battery shell, and placing the battery shell below the liquid injection mechanism;

step 2: the material moving mechanism picks up a transition rubber nozzle and inserts the transition rubber nozzle into a liquid injection port of the battery shell;

and step 3: the liquid injection mechanism moves to the position above the transition rubber nozzle, and electrolyte is injected into the battery shell;

and 4, step 4: after the primary glue injection is completed, the liquid injection mechanism is reset, and a process glue nail is inserted into the battery shell;

and 5: forming electrolyte in the battery shell;

step 6: the liquid injection mechanism moves to the position above the transition rubber nozzle again for secondary liquid injection, and electrolyte is injected into the battery shell;

and 7: after secondary liquid injection is completed, the liquid injection mechanism resets, and meanwhile, the material moving mechanism moves to a position corresponding to a transition rubber nozzle on the battery shell, the transition rubber nozzle is taken away, and the process rubber nail is pulled out;

and 8: the sealing colloidal particles are driven into the liquid injection port, and the liquid injection port is sealed;

and step 9: welding a sealing sheet on the battery shell to realize liquid injection packaging of the battery;

step 10: and taking away the battery which is subjected to liquid injection packaging, and completing the automatic production of the battery.

2. The process for producing a battery with a highly efficient wipe-free liquid injection port capable of being directly welded with a sealing sheet as claimed in claim 1, wherein the transition rubber nozzle is of a cup-shaped structure.

3. The production process of the battery with the efficient wiping-free liquid injection port capable of being directly welded with the sealing sheet according to claim 1, wherein a liquid collecting groove is formed in the transition rubber nozzle.

4. The process for producing a battery with a high-efficiency wiping-free liquid injection port capable of being directly welded with a sealing sheet according to claim 1, wherein the process glue nails inserted in the step 4 are made of hard PP materials.

5. The production process of the battery with the efficient wiping-free liquid injection port capable of being directly welded with the sealing sheet according to claim 1, wherein the sealing rubber particles injected in the step 8 are spherical rubber particles.

6. The process for producing a battery with a sealing plate directly welded on the wiping-free liquid injection port according to claim 1, wherein the welding mode adopted in the step 9 is continuous fiber optic welding.

Technical Field

The invention relates to the technical field of automatic production of lithium batteries, in particular to a high-efficiency battery production process capable of directly welding a sealing sheet at a wiping-free liquid injection port.

Background

A lithium battery is a type of battery using a nonaqueous electrolyte solution, using lithium metal or a lithium alloy as a positive/negative electrode material. With the development of the microelectronic technology in the twentieth century, the miniaturization devices are increasing, high requirements are put on power supplies, and the lithium batteries are popularized along with the components. With the development of scientific technology, lithium batteries have become the mainstream. In the production process of lithium cell, need pour into electrolyte into the shell through annotating liquid equipment, then become, carry out the secondary again and annotate liquid, beat sealed nail and weld the gasket in proper order after, accomplish the equipment of lithium cell. However, after the liquid injection is completed, there is a problem that the electrolyte overflows or contaminates around the liquid injection port, and wiping is required, but in the conventional liquid injection device, wiping is usually performed by a wiping mechanism, and a small amount of electrolyte is likely to remain around the liquid injection port. After formation and secondary injection, residual electrolyte can be crystallized, so that the cleaning by a wiping mechanism is difficult, manual wiping is needed, the efficiency is low, and the method is not suitable for high-speed automatic production. Therefore, although laser cleaning is generally required after completion of the secondary injection, the remaining electrolyte cannot be cleaned completely, and dust is easily generated. When welding the gasket, also often because there is electrolyte to remain, lead to the yields to keep 97% -98%, can not further promote. Meanwhile, because of the problem of electrolyte residue, pulse welding can only be adopted, and optical fiber continuous welding with higher efficiency cannot be adopted, so that the production efficiency is low.

Accordingly, the prior art is deficient and needs improvement.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides an efficient production process of a battery with a wiping-free liquid injection port and a sealing sheet capable of being directly welded.

The technical scheme of the invention is as follows: the production process of the efficient battery with the wiping-free liquid injection port capable of being directly welded with the sealing sheet comprises the following steps:

step 1: feeding a battery shell, and placing the battery shell below the liquid injection mechanism;

step 2: the material moving mechanism picks up a transition rubber nozzle and inserts the transition rubber nozzle into a liquid injection port of the battery shell;

and step 3: the liquid injection mechanism moves to the position above the transition rubber nozzle, and electrolyte is injected into the battery shell;

and 4, step 4: after the primary glue injection is completed, the liquid injection mechanism is reset, and a process glue nail is inserted into the battery shell;

and 5: forming electrolyte in the battery shell;

step 6: the liquid injection mechanism moves to the position above the transition rubber nozzle again for secondary liquid injection, and electrolyte is injected into the battery shell;

and 7: after secondary liquid injection is completed, the liquid injection mechanism resets, and meanwhile, the material moving mechanism moves to a position corresponding to a transition rubber nozzle on the battery shell, the transition rubber nozzle is taken away, and the process rubber nail is pulled out;

and 8: the sealing colloidal particles are driven into the liquid injection port, and the liquid injection port is sealed;

and step 9: welding a sealing sheet on the battery shell to realize liquid injection packaging of the battery;

step 10: and taking away the battery which is subjected to liquid injection packaging, and completing the automatic production of the battery.

Furthermore, the transition rubber nozzle is of a cup-type structure.

Further, a liquid collecting groove is formed in the transition rubber nozzle.

Further, the process glue nail inserted in the step 4 is made of hard PP materials.

Further, the sealing rubber particles thrown in the step 8 are spherical rubber particles.

Further, the welding mode adopted in the step 9 is optical fiber continuous welding.

By adopting the scheme, the transitional glue nozzle is placed at the liquid injection port of the battery shell, and the electrolyte is injected into the battery shell through the transitional glue nozzle, so that the periphery of the liquid injection port of the battery shell is not polluted by the electrolyte after the liquid injection work is finished, the wiping process is reduced, the overall working efficiency is improved, and the requirement for improving the productivity is met.

Drawings

FIG. 1 is a block flow diagram of the present invention.

Detailed Description

The invention is described in detail below with reference to the figures and the specific embodiments.

Referring to fig. 1, the present invention provides a high-efficiency production process of a battery with a wiping-free liquid injection port capable of directly welding a sealing sheet, comprising the following steps:

step 1: and feeding the battery shell, and placing the battery shell below the liquid injection mechanism.

Step 2: the material moving mechanism picks up a transition rubber nozzle and inserts the transition rubber nozzle into a liquid injection port of the battery shell.

And step 3: and the liquid injection mechanism moves to the upper part of the transition rubber nozzle and injects electrolyte into the battery shell. After annotating liquid mechanism to the inside electrolyte that injects of battery case, when there being electrolyte to spill over the circumstances such as, the electrolyte that spills over can be preserved on the mouth is glued in the transition, avoids polluting battery case.

And 4, step 4: after the primary glue injection is completed, the liquid injection mechanism resets and a process glue nail is inserted into the battery shell.

And 5: and forming the electrolyte in the battery shell. The chemical and electrochemical reaction process of the green plate which is changed into a charge state in the electrolyte through charging, removes impurities and improves the electrochemical activity of the active material is called formation, and is one of the important processes of the battery production.

Step 6: and the liquid injection mechanism moves to the upper part of the transition rubber nozzle again for secondary liquid injection, and electrolyte is injected into the battery shell. Annotate liquid mechanism and carry out the secondary to battery case inside and annotate the liquid after, when there being electrolyte to spill over the circumstances such as, the electrolyte that spills over can be preserved on the mouth is glued in the transition, avoids polluting battery case.

And 7: after the secondary liquid injection is completed, the liquid injection mechanism resets, and meanwhile, the material moving mechanism moves to the corresponding position of the transition rubber nozzle on the battery shell, takes away the transition rubber nozzle, and extracts the process rubber nail.

And 8: and (4) driving sealing colloidal particles into the liquid injection port to seal the liquid injection port.

And step 9: and welding a sealing sheet on the battery shell to realize liquid injection packaging of the battery.

Step 10: and taking away the battery which is subjected to liquid injection packaging, and completing the automatic production of the battery.

After the battery shell is fed, the battery shell is clamped below the liquid injection mechanism, and a transition rubber nozzle is arranged on a liquid injection port of the battery shell. And starting the liquid injection mechanism, injecting liquid into the battery shell for the first time, and injecting electrolyte into the battery shell. Because annotate the liquid mechanism and annotate the liquid through transition jiao zui for the electrolyte that overflows is retained in transition jiao zui, prevents that electrolyte from polluting annotating around the liquid mouth. Therefore, after primary liquid injection, the liquid injection port does not need to be wiped, the glue nail can be directly inserted and the formation process can be carried out, and the liquid injection working efficiency is improved. Similarly, when carrying out the secondary and annotating the liquid, annotate the liquid through annotating the liquid mechanism and glue the mouth through the transition for the electrolyte that overflows is retained in the transition and is glued the mouth, prevents that electrolyte from polluting annotating around the liquid mouth. Therefore, after the secondary liquid injection is completed, wiping and laser cleaning are not needed, and the transition rubber nozzle on the liquid injection port is only needed to be moved out, so that the surrounding of the liquid injection port can be ensured to be clean. Then, sealing rubber particles are driven into the liquid injection port to prevent the electrolyte from leaking, and the sealing piece is welded to complete the liquid injection production process of the battery. According to the invention, the transition rubber nozzle is placed at the liquid injection port of the battery shell, and the electrolyte is injected into the battery shell through the transition rubber nozzle, so that the periphery of the liquid injection port of the battery shell is not polluted by the electrolyte after the liquid injection work is finished, and therefore, the wiping process is reduced, the overall working efficiency is improved, and the requirement for improving the productivity is met.

The transition rubber nozzle adopts a cup-shaped structure so as to accommodate the electrolyte overflowing from the primary injection and the secondary injection, and the overflow electrolyte is prevented from polluting the periphery of the injection port.

Be provided with the collecting tank on the mouth is glued in the transition, glue the mouth through the transition and set up the collecting tank to in the space that the mouth held electrolyte is glued in the increase transition, further avoid electrolyte to cause the pollution around annotating the liquid mouth, guarantee battery case's cleanliness factor.

The process rubber nail inserted in the step 4 is made of hard PP materials, so that the process rubber nail is convenient to pull out and insert, the process rubber nail is convenient to reuse, and the utilization rate is improved.

The sealing colloidal particles thrown in the step 8 are spherical colloidal particles. Adopt the spherical micelle as sealed micelle to when squeezing into sealed micelle, can directly squeeze into the micelle and annotate the liquid mouth, improve production efficiency, reduce the defective rate of finished product battery without the direction of differentiateing sealed micelle.

The welding mode adopted in the step 9 is optical fiber continuous welding. The optical fiber continuous welding is that laser beams are coupled to optical fibers, after long-distance transmission, parallel light rays are processed to be focused on a workpiece for continuous welding, and the welding effect is firmer due to the continuity of light emitting, and the welding seam is more delicate and beautiful. The optical fiber continuous welding has the characteristics of high welding speed, small deformation, no air bubble, more flexibility in operation, higher efficiency and the like, and meets the requirement of mass automatic production of batteries.

In summary, the transitional glue nozzle is placed at the liquid injection port of the battery shell, and the electrolyte is injected into the battery shell through the transitional glue nozzle, so that the periphery of the liquid injection port of the battery shell is not polluted by the electrolyte after the liquid injection work is finished, the wiping process is reduced, the overall working efficiency is improved, and the requirement for improving the productivity is met.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.