Battery liquid injection hole plugging device and battery production equipment

Abstract

The utility model provides a battery liquid injection hole plugging device and battery production equipment. The battery liquid injection hole plugging device comprises a placing table, a welding column, an adsorption assembly and a mounting limiting frame, the placing table is used for placing a battery to be sealed, the mounting limiting frame is arranged above the placing table, the adsorption assembly and the welding column are sequentially arranged on the mounting limiting frame, at least part of the adsorption assembly is contained in the welding column, an airflow channel is formed in the adsorption assembly, and the airflow channel is communicated with the welding column. A sunken groove is formed in one end, facing a liquid injection hole of the battery to be sealed, of the welding column, the air flow channel is communicated with the sunken groove, the sunken groove is used for accommodating a small metal ball, and the small metal ball is adsorbed and plugged in the liquid injection hole through the air flow channel. According to the battery liquid injection hole plugging device, the problem of short circuit of the battery due to the fact that the metal balls form drawn wires at the liquid injection hole is effectively avoided, manual placement of the metal balls is reduced, and the plugging efficiency of the device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of battery production especially relates to a battery liquid injection hole plugging device and battery production equipment. BACKGROUND

[0002] At present, the battery liquid injection equipment generally carries out accurate alignment between the liquid injection needle and the liquid injection hole of the battery, injects the electrolyte in the liquid injection needle into the battery through the liquid injection hole, and finally plugs the liquid injection hole through the sealing equipment. In the prior art, a conical pin is generally used to plug the liquid injection hole. This method causes a gap between the liquid injection hole and the conical pin, which leads to the leakage of the electrolyte in the battery, affecting the safety of the battery. Therefore, some scholars use a welding column to press a small metal ball into the liquid injection hole and melt and weld the small metal ball to the liquid injection hole through resistance welding. Although this method solves the problem of electrolyte leakage, the contact surface between the welding column and the small metal ball is flat, causing the liquid formed during the melting of the small metal ball in the liquid injection hole to splash outward without any obstruction, resulting in the formation of a wire drawing of the small metal ball welded to the liquid injection hole, causing a short circuit of the battery. Moreover, the position of the small metal ball cannot be fixed, and manual placement of the small metal ball on the liquid injection hole of the battery is required, resulting in low plugging efficiency. SUMMARY

[0003] The utility model aims at overcoming the defects in the prior art, providing a battery liquid injection hole plugging device and battery production equipment that can avoid the formation of a wire drawing of a small metal ball at a liquid injection hole, causing a short circuit of a battery, reduce manual placement of the small metal ball, and improve plugging efficiency.

[0004] The utility model aims at overcoming the defects in the prior art, providing a battery liquid injection hole plugging device and battery production equipment that can avoid the formation of a wire drawing of a small metal ball at a liquid injection hole, causing a short circuit of a battery, reduce manual placement of the small metal ball, and improve plugging efficiency.

[0005] A battery liquid injection hole plugging device includes a placement table for placing a battery to be sealed. The battery liquid injection hole plugging device further includes a welding column, an adsorption assembly, and a mounting limiting frame. The mounting limiting frame is arranged above the placement table. The adsorption assembly and the welding column are sequentially arranged in the mounting limiting frame. The adsorption assembly is at least partially accommodated in the welding column. The adsorption assembly forms an airflow channel. One end of the welding column facing the liquid injection hole of the battery to be sealed forms a recessed groove. The airflow channel is in communication with the recessed groove. The recessed groove is used to accommodate a small metal ball, and the small metal ball is adsorbed and plugged in the liquid injection hole through the airflow channel.

[0006] In one embodiment, the adsorption assembly includes an adsorption pipeline and an adsorption power source. One end of the adsorption pipeline is at least partially accommodated in the welding column. The other end of the adsorption pipeline is in communication with the adsorption power source. The airflow channel is formed in the adsorption pipeline.

[0007] In one of the embodiments, the adsorption power source is a vacuum pump.

[0008] In one of the embodiments, the vacuum pump is fixedly installed on the installation limiting frame, and the vacuum pump is communicated with the adsorption pipeline away from the one end of the recessed groove, and the vacuum pump is used to form negative pressure in the airflow channel to adsorb the metal balls.

[0009] In one of the embodiments, the recessed groove is concave hemispherical, and the shape of the recessed groove is matched with the shape of the metal balls.

[0010] In one of the embodiments, the diameter of the recessed groove is greater than the diameter of the metal balls.

[0011] In one of the embodiments, the battery liquid injection hole plugging device further comprises a conveying mechanism, the conveying mechanism is arranged on the placing table, and the conveying mechanism is located below the welding column and is used to move and convey the metal balls in the recessed groove.

[0012] In one of the embodiments, the conveying mechanism comprises a conveying cylinder and a conveying table, the conveying cylinder is fixedly arranged on the placing table, the telescopic end of the conveying cylinder is connected with the conveying table, the conveying table is located below the welding column, and the conveying table is used to place the metal balls.

[0013] In one of the embodiments, the placing table is formed with a battery positioning groove, and the battery positioning groove is used to position and limit the battery to be sealed.

[0014] A battery production equipment comprises the battery liquid injection hole plugging device of any one of the above-mentioned embodiments.

[0015] Compared with the prior art, the battery liquid injection hole plugging device has at least the following advantages:

[0016] 1) The battery liquid injection hole plugging device comprises a recessed groove formed at the one end of the welding column towards the liquid injection hole of the battery to be sealed, so that the recessed groove can accommodate and wrap the metal balls, on one hand, the position of the metal balls can be limited to avoid the position deviation of the metal balls, and on the other hand, the metal balls can be prevented from splashing outward when the metal balls are melted into liquid, the metal balls welded at the liquid injection hole are prevented from forming a wire drawing, and the problem of battery short circuit is reduced.

[0017] 2) The battery liquid injection hole plugging device, since the adsorption assembly is at least partially accommodated in the welding column, and the airflow channel of the adsorption assembly is in communication with the recessed groove of the welding column, the adsorption assembly can form negative pressure in the airflow channel, the metal ball can be adsorbed in the recessed groove, the position of the metal ball is fixed, manual placement of the metal ball on the liquid injection hole of the battery is reduced, and the plugging efficiency of the battery is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the utility model, and should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0019] Figure 1 It is an embodiment of the battery liquid injection hole plugging device structure schematic view;

[0020] Figure 2 It is Figure 1 It is the battery liquid injection hole plugging device A place local enlarged view shown in;

[0021] Figure 3 It is an embodiment of the welding column, adsorption assembly and installation restriction frame structure schematic view;

[0022] Figure 4 It is Figure 3 It is the local enlarged view shown in B;

[0023] Figure 5 It is Figure 3 It is another direction of the welding column, adsorption assembly and installation restriction frame structure schematic view shown in.

[0024] Reference signs: 10, battery liquid injection hole plugging device;100, placing table;101, battery positioning groove;200, welding column;201, recessed groove;300, adsorption assembly;310, adsorption pipeline;320, adsorption power source;400, installation restriction frame;500, conveying mechanism;510, conveying cylinder;520, conveying table. DETAILED DESCRIPTION

[0025] In order to facilitate the understanding of the utility model, the following will be more comprehensive description of the utility model with reference to the related drawings. The preferred embodiments of the utility model are shown in the drawings. However, the utility model can be realized in many different forms, and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the utility model content of the utility model more thorough and comprehensive.

[0026] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0028] To better understand the technical solution and beneficial effects of this utility model, the following detailed description is provided in conjunction with specific embodiments:

[0029] like Figures 1 to 4 As shown, a battery filling hole sealing device 10 of one embodiment includes a placement platform 100, a welding column 200, an adsorption component 300, and a mounting bracket 400. The placement platform 100 is used to place the battery to be sealed. The mounting bracket 400 is located above the placement platform 100. The adsorption component 300 and the welding column 200 are sequentially arranged on the mounting bracket 400. The adsorption component 300 is at least partially housed in the welding column 200. The adsorption component 300 forms an airflow channel (not shown). The welding column 200 has an inner groove 201 at one end facing the filling hole of the battery to be sealed. The airflow channel is connected to the inner groove 201. The inner groove 201 is used to accommodate a metal ball and adsorbs and seals the metal ball in the filling hole through the airflow channel.

[0030] In this embodiment, since the end of the welding column 200 facing the liquid injection hole of the battery to be sealed has an inner groove 201, the inner groove 201 can accommodate and enclose the metal ball. On the one hand, it can restrict the position of the metal ball, preventing it from shifting; on the other hand, it can limit the outward splashing of the metal ball when it melts into liquid, preventing the metal ball from forming wires at the liquid injection hole and reducing the problem of battery short circuit. Furthermore, since the adsorption component 300 is at least partially housed within the welding column 200, and the airflow channel of the adsorption component 300 is connected to the inner groove 201 of the welding column 200, the adsorption component 300 can create a negative pressure in the airflow channel, ensuring that the metal ball can be adsorbed within the inner groove 201, thus fixing the position of the metal ball. This also reduces the need for manual placement of the metal ball on the battery's liquid injection hole, thereby improving the sealing efficiency of the battery.

[0031] As shown in Figure 2 and Figure 3 , in one embodiment, the adsorption assembly 300 includes an adsorption pipe 310 and an adsorption power source 320, one end of the adsorption pipe 310 is at least partially accommodated in the welding column 200, the other end of the adsorption pipe 310 is communicated with the adsorption power source 320, and an airflow channel is formed in the adsorption pipe 310. In this embodiment, since the airflow channel is communicated with the recessed groove 201, and one end of the adsorption pipe 310 is at least partially accommodated in the welding column 200, and the other end of the adsorption pipe 310 is communicated with the adsorption power source 320, when the adsorption power source 320 is started, a negative pressure is formed in the airflow channel of the adsorption pipe 310, which ensures that the metal balls are stably adsorbed in the recessed groove 201 of the welding column 200, effectively solving the problem of position deviation of the manually placed metal balls. The technical solution is intelligent, thereby improving the plugging efficiency of the battery. Further, in one embodiment, the adsorption power source 320 is a vacuum pump.

[0032] Further, as shown in Figure 4 and Figure 5 , in one embodiment, the vacuum pump is fixedly installed on the installation limiting frame 400, the vacuum pump is communicated with the other end of the adsorption pipe 310 away from the recessed groove 201, and the vacuum pump is used to form a negative pressure in the airflow channel to adsorb the metal balls. In this embodiment, since the vacuum pump is fixedly installed on the installation limiting frame 400, the stability of the installation position of the vacuum pump is ensured, and at the same time, the vacuum pump can ensure that the metal balls are quickly adsorbed in the recessed groove 201 of the welding column 200 under the action of stable negative pressure, reducing the problem of position deviation of the metal balls caused by unstable adsorption process, and greatly improving the stability of the work of the battery liquid injection hole sealing device 10.

[0033] As shown in Figure 4 , in one embodiment, the recessed groove 201 is in a concave hemispherical shape, the shape of the recessed groove 201 is matched with the shape of the metal balls, the metal balls are ensured to be fitted in the recessed groove 201, and a part of the metal balls is ensured to be accommodated in the liquid injection hole of the battery and a part of the metal balls is ensured to be accommodated in the recessed groove 201 during the welding process, so that the metal balls can be limited in a closed space after being melted into liquid, thereby limiting the liquid from splashing outward and avoiding the formation of wire drawing of the metal balls during welding.

[0034] Further, in one embodiment, the diameter of the recessed groove 201 is greater than the diameter of the metal balls, so that the metal balls can be adsorbed and accommodated in the recessed groove 201.

[0035] As shown in Figure 1 and Figure 2As shown in the drawings, in one of the embodiments, the battery liquid injection hole plugging device 10 further comprises a conveying mechanism 500, which is arranged on the placement table 100 and is located below the welding column 200 and is used to move the metal balls in the recessed groove 201.

[0036] Further, as shown in the drawings, Figure 1 and Figure 2 As shown in the drawings, in one of the embodiments, the conveying mechanism 500 comprises a conveying cylinder 510 and a conveying table 520, the conveying cylinder 510 is fixedly arranged on the placement table 100, the telescopic end of the conveying cylinder 510 is connected to the conveying table 520, the conveying table 520 is located below the welding column 200, and the conveying table 520 is used to place the metal balls. In this embodiment, since the telescopic end of the conveying cylinder 510 is connected to the conveying table 520, and the conveying table 520 is used to place the metal balls, the automatic conveying of the metal balls can be ensured, and since the conveying cylinder 510 is telescopic, the mutual interference between the conveying table 520 and the welding column 200 during work can be avoided, thereby improving the working efficiency of the device.

[0037] As shown in the drawings, Figure 2 In one of the embodiments, the placement table 100 is formed with a battery positioning groove 101, which is used to position and limit the battery to be sealed, so that when the battery to be sealed is placed in the battery positioning groove 101, the preset position can be quickly and accurately found, the positioning accuracy of the battery to be sealed before plugging is improved, and the problem of inaccurate welding caused by deviation of the placement position of the battery to be sealed is avoided.

[0038] The utility model further provides a battery production equipment, including the battery liquid injection hole plugging device 10 of any one embodiment described above.

[0039] Compared with the prior art, the utility model has at least the following advantages:

[0040] 1) The battery liquid injection hole plugging device 10 of the utility model, since the one end of the welding column 200 towards the liquid injection hole of the battery to be sealed is formed with the recessed groove 201, the recessed groove 201 can accommodate and wrap the metal balls, on the one hand, the position of the metal balls can be limited, and the position deviation of the metal balls can be avoided, on the other hand, the metal balls can be limited to spray outward when melting into liquid, the metal balls welded at the liquid injection hole can be avoided to form wire drawing, and the problem of battery short circuit can be reduced.

[0041] 2) The battery liquid injection hole plugging device 10, since the adsorption assembly 300 is at least partially accommodated in the welding column 200, and the airflow channel of the adsorption assembly 300 is communicated with the inner recessed groove 201 of the welding column 200, so that the adsorption assembly 300 can form negative pressure in the airflow channel, ensure that the metal ball can be adsorbed in the inner recessed groove 201, so that the position of the metal ball is fixed, at the same time, the manual placement of the metal ball on the liquid injection hole of the battery is reduced, thereby improving the plugging efficiency of the battery.

[0042] The above-described embodiments only express several implementation manners of the utility model, and the description is relatively specific and detailed, but it cannot be understood as the limitation of the utility model patent range. It should be pointed out that, for ordinary skilled persons in the art, under the premise of not departing from the utility model concept, a number of modifications and improvements can be made, which all belong to the protection range of the utility model. Therefore, the protection range of the utility model patent should be subject to the appended claims.

Claims

1. A battery electrolyte injection hole sealing device, comprising a placement table for placing a battery to be sealed, characterized in that, the battery electrolyte injection hole sealing device further comprises a welding column, a suction assembly and a mounting limiting frame, the mounting limiting frame is arranged above the placement table, the suction assembly and the welding column are sequentially arranged in the mounting limiting frame, the suction assembly is at least partially accommodated in the welding column, the suction assembly is formed with an airflow channel, one end of the welding column facing the electrolyte injection hole of the battery to be sealed is formed with a recessed groove, the airflow channel is in communication with the recessed groove, the recessed groove is used to accommodate metal balls, and the metal balls are suction sealed in the electrolyte injection hole through the airflow channel.

2. The battery liquid injection hole plugging device according to claim 1, wherein, The suction assembly comprises a suction pipeline and a suction power source, one end of the suction pipeline is at least partially accommodated in the welding column, the other end of the suction pipeline is communicated with the suction power source, and the airflow channel is formed in the suction pipeline. 3.The battery liquid injection hole plugging device according to claim 2, characterized in that, The suction power source is a vacuum pump.

4. The battery liquid injection hole plugging device according to claim 3, characterized in that, The vacuum pump is fixedly installed on the mounting limiting frame, the vacuum pump is communicated with the other end of the suction pipeline away from the recessed groove, and the vacuum pump is used to form negative pressure in the airflow channel to suction the metal balls.

5. The battery filling hole plugging device according to claim 1, wherein, The recessed groove is in the shape of a concave hemisphere, and the shape of the recessed groove is matched with the shape of the metal balls.

6. The battery liquid injection hole plugging device according to claim 5, wherein, The diameter of the recessed groove is greater than the diameter of the metal balls.

7. The battery filling hole plugging device according to claim 1, wherein, The battery electrolyte injection hole sealing device further comprises a conveying mechanism, the conveying mechanism is arranged on the placement table, and the conveying mechanism is located below the welding column and is used to move and convey the metal balls in the recessed groove. 8.The battery liquid injection hole plugging device according to claim 7, characterized in that, The conveying mechanism comprises a conveying cylinder and a conveying table, the conveying cylinder is fixedly arranged on the placement table, the telescopic end of the conveying cylinder is connected to the conveying table, the conveying table is located below the welding column, and the conveying table is used to place the metal balls. 9.The battery liquid injection hole plugging device according to claim 1, wherein, The placement table is formed with a battery positioning groove for positioning and limiting the battery to be sealed.

10. A battery production apparatus characterized by comprising: The battery electrolyte injection hole sealing device comprises any one of claims 1 to 9.

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