CN210325980U

CN210325980U - Connecting plug suitable for lithium battery formation

Info

Publication number: CN210325980U
Application number: CN201921503544.4U
Authority: CN
Inventors: 赖信华; 张立新; 高峰; 石琳琳; 申建阳
Original assignee: Yinlong New Energy Co Ltd; Hebei Yinlong New Energy Co Ltd
Current assignee: Yinlong New Energy Co Ltd; Hebei Yinlong New Energy Co Ltd
Priority date: 2019-09-10
Filing date: 2019-09-10
Publication date: 2020-04-14
Anticipated expiration: 2029-09-10

Abstract

The utility model relates to a technical field of lithium cell production facility discloses a connect end cap suitable for lithium cellization becomes, blast pipe linkage segment, liquid storage pot and notes liquid mouth connecting pipe, and the liquid storage pot includes upper portion and lower part, and the blast pipe linkage segment sets up in upper portion to with the inner chamber intercommunication of liquid storage pot, in the inner chamber that the liquid storage pot was stretched into from the bottom of liquid storage pot to annotate the liquid mouth connecting pipe, and the open-top of annotating the liquid mouth connecting pipe is equipped with the difference in height with the inner chamber bottom surface of liquid storage pot. The in-process of lithium cellization becomes is solved, and electrolyte spills over from the notes liquid mouth of lithium cell, outwards reveals from the junction of connecting the connection end cap of annotating the liquid mouth with the blast pipe, has polluted the surface scheduling problem of lithium cell.

Description

Connecting plug suitable for lithium battery formation

All as the field of technology

The utility model relates to a lithium cell production facility's technical field especially relates to a connect end cap suitable for lithium cellization becomes.

All the above-mentioned background techniques

At present, lithium batteries need to be formed, also called as activated, before finished products are produced, and after the lithium batteries are manufactured, positive and negative electrode substances in the lithium batteries are activated in a certain charging and discharging mode, so that the process of improving the comprehensive performance of the lithium batteries is achieved. Formation is a very complicated process, the lithium battery needs to be charged for many times, in the charging process, the lithium battery can generate heat due to lithium separation, the volume of electrolyte in the lithium battery is expanded due to the heat, the electrolyte overflows from a liquid injection nozzle of the lithium battery, then the electrolyte leaks outwards from a connection part between a connection plug connected with the liquid injection nozzle and an exhaust pipe, the outer surface of the lithium battery is polluted, the lithium battery is taken out of a cabinet after formation, and production personnel are easy to contact with the electrolyte to cause injury; meanwhile, the electrolyte is contacted with the exhaust pipe, so that the electrolyte is easily polluted by air in the exhaust pipe.

All kinds of practical novel contents

The utility model provides a connect end cap suitable for lithium cellization becomes can hold the electrolyte that spills over from the notes liquid mouth of lithium cell, prevent that electrolyte from spilling over and polluting the surface of lithium cell, can avoid electrolyte to receive the air pollution in the blast pipe again from the blast pipe with the junction high pressure of being connected the end cap.

In order to realize the purpose of the utility model, the utility model discloses a technical scheme be: the utility model provides a connect end cap suitable for lithium cellization becomes, includes blast pipe linkage segment, liquid storage pot and notes liquid mouth connecting pipe, the liquid storage pot includes upper portion and lower part, and the blast pipe linkage segment sets up in upper portion to with the inner chamber intercommunication of liquid storage pot, annotate the liquid mouth connecting pipe and stretch into the inner chamber of liquid storage pot from the bottom of liquid storage pot, and the open-top of annotating the liquid mouth connecting pipe is equipped with the difference in height with the inner chamber bottom surface of liquid storage pot.

Preferably, the inner cavity volume of the lower part of the liquid storage tank is larger than that of the upper part.

Preferably, the exhaust pipe connection section is provided at a top end of the upper portion.

Preferably, the exhaust pipe connection section is provided at a side end of the upper portion.

Preferably, a plurality of circumferential protrusions are arranged on the outer wall of the exhaust pipe connecting section.

Preferably, the lower end of the liquid injection nozzle connecting pipe extends out of the bottom of the liquid storage tank.

Preferably, the lower end of the liquid injection nozzle connecting pipe is provided with an internal thread or an external thread for connecting a lithium battery liquid injection nozzle.

Preferably, the shape of the lower part of the liquid storage tank is a cone, a pyramid, a truncated cone, a cylinder, a sphere or a hemisphere.

The utility model has the advantages that:

compared with the prior art, the utility model discloses can be in the formation in-process, can store the electrolyte that spills over from the notes liquid mouth of lithium cell, reduce and become the in-process because of the hydraulic pressure that the electrolyte intensifies and produce, prevent that electrolyte from spilling over and polluting the surface of lithium cell, can avoid electrolyte to receive the pollution of air in the exhaust pipe again from the blast pipe and the junction high pressure of being connected the end cap.

Description of the drawings

Fig. 1 is an axial cross-sectional view of a preferred embodiment of the invention;

FIG. 2 is a schematic axial cross-sectional view of the connecting exhaust pipe of FIG. 1;

FIG. 3 is a schematic view of an embodiment of the internally threaded tube of FIG. 1 coupled to a fluid reservoir;

FIG. 4 is a schematic view of the embodiment of the fluid reservoir of FIG. 1 in the shape of a hemisphere;

wherein the reference numerals are: 10. an exhaust pipe connecting section; 20. a liquid storage tank; 201. an upper portion; 202. a lower portion; 30. the liquid injection nozzle is connected with the pipe; 101. the circumference is convex.

(specific embodiments) in all cases

The preferred embodiments of the present invention are shown in fig. 1-4, which are used to supplement the description of the text part of the specification with figures, so as to facilitate the understanding of the technical features and the technical solutions as a whole of the present invention, but should not be construed as limiting the present invention. In the description of the embodiments of the present invention, the relative positional relationship between the top, bottom, and the like is based on fig. 1. Technical words not specifically explained may be regarded as broad meanings in the prior art.

As shown in fig. 1-4, a connecting plug suitable for lithium battery formation comprises an exhaust pipe connecting section 10, a liquid storage tank 20 and a liquid injection nozzle connecting pipe 30, wherein the lower end of the liquid injection nozzle connecting pipe 30 is provided with an internal thread or an external thread for connecting a liquid injection nozzle of a lithium battery. The liquid storage tank 20 comprises an upper portion 201 and a lower portion 202, the exhaust pipe connecting section 10 is arranged on the upper portion 201 and communicated with an inner cavity of the liquid storage tank 20, the liquid injection nozzle connecting pipe 30 extends into the inner cavity of the liquid storage tank 20 from the bottom of the liquid storage tank 20, a height difference is arranged between the top opening of the liquid injection nozzle connecting pipe 30 and the bottom surface of the inner cavity of the liquid storage tank 20, the height difference is H, namely the effective volume between the lower portion 202 of the liquid storage tank 20 and the liquid injection nozzle connecting pipe 30 is H, and electrolyte overflowing from the liquid injection nozzle of the lithium battery can be contained.

The second preferred embodiment of the present invention, the inner cavity volume of the lower portion 202 of the liquid storage tank 20 is larger than the inner cavity volume of the upper portion 201, so as to improve the overflow amount of the electrolyte contained in the liquid storage tank 20.

The third preferred embodiment of the present invention is that the exhaust pipe connecting section 10 is disposed on the top end or side end of the upper portion 201, and the connection scheme of the exhaust pipe connecting section 10 can be selected according to the type and size of the lithium battery.

The utility model discloses a fourth of the preferred embodiment, be equipped with the protruding 101 in a plurality of ring circumferences on the outer wall of blast pipe linkage segment 10, be favorable to fixed connection exhaust pipe on blast pipe linkage segment 10, the protruding 101 in ring circumference can extrude exhaust pipe simultaneously, and the ring circumference of strengthening exhaust pipe is sealed.

The utility model discloses a fifth of the preferred embodiment, annotate the bottom that liquid storage pot 20 was stretched out to the lower extreme of liquid mouth connecting pipe 30, can select required notes liquid mouth connecting pipe 30's connection scheme according to the kind and the size of lithium cell.

The utility model discloses a sixth of the preferred embodiment, the shape of the lower part 202 of liquid storage pot 20 is cone, pyramid, round platform body, cylinder, spheroid or hemispheroid, can be according to the kind and the size of lithium cell, sets for the shape of required connection end cap.

The using method comprises the following steps: sleeving the exhaust pipe on the outer pipe wall of the exhaust pipe connecting section 10, screwing the liquid injection nozzle connecting pipe 30 on the external thread or the internal thread of the liquid injection nozzle of the lithium battery, starting the lithium battery to be formed into a cabinet, wherein if the reaction in the battery is violent in the formation process of the lithium battery, the electrolyte slightly overflows from the liquid injection nozzle, and flows into the lower part 202 of the liquid storage tank 20 connected with the plug, and because enough volume is reserved between the lower part 202 of the liquid storage tank 20 and the liquid injection nozzle connecting pipe 30 to collect the electrolyte overflowing from the lithium battery, the electrolyte cannot overflow from the connecting gap of the exhaust pipe and the exhaust pipe connecting section 10, so that the surface of the battery is effectively prevented from being polluted; also avoided the producer to when putting the cabinet under to the battery, skin contact electrolyte, caused the injury to skin. After the battery formation process is finished, the exhaust pipe and the connecting plug are taken down, the electrolyte in the connecting plug is cleaned, and the connecting plug is cleaned and can be repeatedly used.

The above-mentioned embodiments are only preferred embodiments of the present invention, not limiting the scope of the present invention, and all equivalent changes made by the shape, structure and principle of the present invention should be covered by the protection scope of the present invention.

Claims

1. The utility model provides a connect end cap suitable for lithium cellization becomes, its characterized in that, includes blast pipe linkage segment (10), liquid storage pot (20) and notes liquid mouth connecting pipe (30), liquid storage pot (20) include upper portion (201) and lower part (202), and blast pipe linkage segment (10) set up in upper portion (201) to with the inner chamber intercommunication of liquid storage pot (20), annotate liquid mouth connecting pipe (30) and stretch into the inner chamber of liquid storage pot (20) from the bottom of liquid storage pot (20), and the open-top of annotating liquid mouth connecting pipe (30) and the inner chamber bottom surface of liquid storage pot (20) are equipped with the difference in height.

2. The connecting plug according to claim 1, characterized in that the lower part (202) of the reservoir (20) has a greater internal volume than the upper part (201).

3. The connecting plug according to claim 1, characterised in that the vent tube connection section (10) is arranged at the top end of the upper part (201).

4. The connecting plug according to claim 1, characterised in that the vent tube connection section (10) is arranged at the side end of the upper part (201).

5. The connecting plug according to claim 1, characterised in that the outer wall of the exhaust tube connecting section (10) is provided with a plurality of circumferential projections (101).

6. The connecting plug according to claim 1, characterised in that the lower end of the pouring spout connecting tube (30) protrudes out of the bottom of the liquid storage tank (20).

7. The connecting plug according to claim 1, characterized in that the lower end of the filling nozzle connecting pipe (30) is provided with an internal thread or an external thread for connecting a lithium battery filling nozzle.

8. The connecting plug according to any of claims 1 to 7, characterised in that the lower part (202) of the reservoir (20) has the shape of a cone, pyramid, truncated cone, cylinder, sphere or hemisphere.