CN217062455U - Liquid injection nozzle and liquid injection device of lithium battery - Google Patents

Abstract

The utility model relates to a lithium cell technical field especially relates to a notes liquid mouth and priming device of lithium cell. Annotate liquid mouth includes: the main body part is provided with an accommodating cavity which is suitable for accommodating fluid, the main body part can stretch along with the pressure change in the accommodating cavity, and the main body part is provided with a liquid injection channel which penetrates through the main body part. The utility model provides a notes liquid mouth of lithium cell accepts the chamber through setting up the inside of main part, and the length of main part changes along with the pressure change of accepting the intracavity, can change the flexible volume of main part through changing fluidic pressure, and then the flexible volume that can accurate control main part reaches the purpose of the packing force between accurate control notes liquid mouth and the lithium cell. Compare in the correlation technique and utilize device accuracy control to annotate the liquid mouth and compare with the packing force of lithium cell, the utility model discloses an annotate the liquid mouth and hang down, easily realize to the structural accuracy requirement.

Description

Lithium battery injection nozzle and injection device

Technical Field

The utility model relates to a battery technology field especially relates to a notes liquid mouth and priming device of lithium cell.

Background

In the lithium battery liquid injection technology in the prior art, a plurality of liquid injection nozzles are simultaneously installed on a liquid injection tray, and the liquid injection nozzles and a battery liquid injection port are sealed by controlling the movement of the tray. The rigidity of the liquid injection nozzle cannot be adjusted, in order to ensure consistent sealing performance, the pressing amount of all the liquid injection nozzles is required to be the same in the sealing process, otherwise, the sealing pressure is inconsistent, so that the sealing effect is inconsistent, and the liquid injection quality is influenced. In the actual use process, because of the machining precision of tray or notes liquid mouth is not enough, it is difficult to guarantee that all annotate the sealed in-process of liquid mouth and push down the volume unanimously, only realize through the machining precision that constantly improves the part in order to solve this problem, neither economical nor reliable.

SUMMERY OF THE UTILITY MODEL

The utility model provides a notes liquid mouth and priming device of lithium cell for it is big to solve the injection mouth compressed volume control degree of difficulty among the prior art, leads to the defect that priming device is with high costs, has notes liquid mouth control accuracy height, control convenience, to the advantage that device required precision is low.

The utility model provides a notes liquid mouth of lithium cell, include: the liquid injection device comprises a main body part, wherein the main body part is provided with an accommodating cavity, the accommodating cavity is suitable for accommodating fluid, the main body part can stretch along with the pressure change in the accommodating cavity, and the main body part is provided with a liquid injection channel which penetrates through the main body part.

According to the utility model provides a pair of annotate liquid mouth of lithium cell, be equipped with the tip of lithium cell contact on the main part and annotate the liquid tip, annotate the liquid tip be suitable for with the lithium cell butt, be suitable for the drive during main part concertina movement annotate the liquid tip motion.

According to the utility model provides a pair of annotate liquid mouth of lithium cell, it encircles to accept the chamber annotate the periphery of liquid passageway.

According to the utility model provides a pair of annotate liquid mouth of lithium cell, the notes liquid mouth of lithium cell still including adjusting the branch road, adjust the branch road with accept the chamber intercommunication, be used for adjusting accept intracavity internal pressure.

According to the utility model provides a pair of annotate liquid mouth of lithium cell, it is equipped with aperture adjustable governing valve on the road to adjust.

According to the utility model provides a pair of annotate liquid mouth of lithium cell, it is equipped with the check valve on the road to adjust to be propped up.

According to the utility model provides a pair of annotate liquid mouth of lithium cell, the main part is the frustum form, annotate the liquid passageway and link up the up end and the lower terminal surface of frustum.

According to the utility model provides a pair of annotate liquid mouth of lithium cell, the main part is the rubber spare.

The utility model also provides an annotate liquid device, include as above the notes liquid mouth of lithium cell.

The utility model provides a pair of filling device, it is a plurality of to annotate the liquid mouth.

The utility model provides a notes liquid mouth of lithium cell accepts the chamber through setting up the inside of main part, and the length of main part changes along with the pressure change of accepting the intracavity, can change the flexible volume of main part through changing fluidic pressure, and then the flexible volume that can accurate control main part reaches the purpose of the packing force between accurate control notes liquid mouth and the lithium cell. Compare in the correlation technique and utilize device accuracy control to annotate the liquid mouth and compare with the packing force of lithium cell, the utility model discloses an annotate the liquid mouth and hang down, easily realize to the structural accuracy requirement.

Drawings

In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of a liquid injection nozzle of a lithium battery according to the present invention;

fig. 2 is a second schematic structural view of a liquid injection nozzle of a lithium battery provided by the present invention;

reference numerals:

100. a liquid injection nozzle; 110. a main body portion; 120. an accommodating cavity; 130. a liquid injection channel; 140. injecting liquid into the end part; 150. adjusting the branch; 160. adjusting a valve;

200. a secondary cup; 300. a lithium battery.

Detailed Description

To make the objects, technical solutions and advantages of the present invention clearer, the drawings of the present invention are combined to clearly and completely describe the technical solutions of the present invention, and obviously, the described embodiments are 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 efforts belong to the protection scope of the present invention.

The injection nozzle 100 of the lithium battery 300 of the present invention will be described with reference to fig. 1 to 2. It should be noted that, when injecting the electrolyte into the lithium battery 300, a liquid injection device is needed, the liquid injection device is provided with a secondary cup 200, and the lower end of the secondary cup 200 is provided with a liquid injection nozzle 100; the lithium battery 300 is provided with a liquid injection port, the liquid injection nozzle 100 is inserted into the liquid injection port, and the liquid injection device can inject liquid into the lithium battery 300. In addition, a certain pressing force is provided between the liquid filling nozzle 100 and the edge of the liquid filling opening, so that the sealing can be realized by the pressing force between the liquid filling nozzle 100 and the lithium battery 300, and the liquid leakage can be avoided.

Referring to fig. 1, an injection nozzle 100 of a lithium battery 300 according to an embodiment of the present invention includes a main body 110. The main body 110 has a liquid injection passage 130, the liquid injection passage 130 penetrates the main body 110, and the main body 110 has a housing chamber 120. In other words, the main body 110 is a hollow structure, and the liquid injection channel 130 is spaced apart from the receiving cavity 120.

Referring to fig. 1, the receiving cavity 120 is suitable for receiving a fluid, and after the fluid flows into the receiving cavity 120, the pressure inside the receiving cavity 120 may be changed, and the main body 110 may be in an extendable and retractable state along with the change of the pressure inside the receiving cavity 120. It should be noted here that the fluid may be a gas or a liquid. Since the length of the main body 110 can be changed along with the pressure inside the accommodating cavity 120, the amount of expansion and contraction of the main body 110 can be changed by changing the pressure of the fluid, that is, by controlling the pressure inside the accommodating cavity 120, the amount of expansion and contraction of the main body 110 can be accurately controlled, and thus the magnitude of the pressing force between the liquid filling nozzle 100 and the lithium battery 300 can be accurately controlled.

According to the utility model discloses lithium cell 300's notes liquid mouth 100 accepts chamber 120 through the inside setting with main part 110, and the length of main part 110 changes along with the pressure change of accepting in the chamber 120, can change the flexible volume of main part 110 through the pressure that changes fluid, and then can the flexible volume of accurate control main part 110, reaches the purpose of the packing force between liquid mouth 100 and the lithium cell 300 is annotated in the accurate control. Compare in the correlation technique and utilize device accuracy control to annotate the liquid mouth and compare with the packing force of lithium cell, the utility model discloses an annotate liquid mouth 100 low to the structural accuracy requirement, easily realize.

As shown in fig. 2, according to some embodiments of the present invention, the end portion of the main body portion 110 contacting the lithium battery 300 is provided with the liquid injection end portion 140, the liquid injection end portion 140 is adapted to abut against the lithium battery 300, and the main body portion 110 is adapted to drive the liquid injection end portion 140 to move during the telescopic movement, so that the telescopic characteristic of the main body portion 110 can be utilized to adjust the relative position between the liquid injection end portion 140 and the liquid injection port. In some examples, the injection end 140 may be a rubber member having a certain hardness. According to some embodiments of the present invention, the main body portion 110 may be a rubber member. It should be noted that rubber materials are common, and have the advantage of low cost.

According to some embodiments of the present invention, as shown in fig. 1 and fig. 2, the liquid injection nozzle 100 of the lithium battery 300 further includes an adjusting branch 150, and the adjusting branch 150 is communicated with the accommodating chamber 120 for adjusting the internal pressure of the accommodating chamber 120. The adjustment branch 150 may be used to adjust the fluid pressure in the receiving cavity 120, so as to adjust the expansion amount of the main body 110. Furthermore, the adjusting branch 150 is provided with an adjusting valve 160 with adjustable opening. Of course, the type of valve body on the regulating branch 150 is not limited thereto, and in some examples, a check valve is provided on the regulating branch 150.

In order to improve the uniformity of the expansion and contraction of the main body 110, according to some embodiments of the present invention, the receiving cavity 120 surrounds the periphery of the liquid injection channel 130. That is, the main body 110 has an annular cavity structure therein, and the annular cavity structure surrounds the outer circumference of the liquid injection channel 130. Referring to fig. 1, the main body 110 has a frustum shape, the liquid injection passage 130 penetrates through the upper end surface and the lower end surface of the frustum, and the liquid injection passage 130 extends along a straight line. Thus, the main body 110 can be easily abutted against the injection port, and the injection passage 130 can easily inject the lithium battery 300.

According to the utility model discloses priming device, including as above-mentioned notes liquid mouth 100 of lithium cell 300. Specifically, the pouring nozzle 100 may be plural in number at intervals. Thus, a plurality of lithium batteries 300 can be charged simultaneously.

According to the utility model discloses priming device accepts chamber 120 through the inside setting with main part 110, and main part 110's length changes along with the pressure change of accepting in the chamber 120, can change main part 110's flexible volume through changing fluidic pressure, and then can accurate control main part 110's flexible volume, reaches the purpose of the packing force between accurate control liquid injection mouth 100 and the lithium cell 300. Compare in the correlation technique and utilize device accuracy control to annotate the liquid mouth and compare with the packing force of lithium cell, the utility model discloses an annotate liquid mouth 100 low to the structural accuracy requirement, easily realize.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims (10)

1. The utility model provides a annotate liquid mouth of lithium cell which characterized in that includes:

a main body portion having an accommodation chamber adapted to accommodate a fluid, the main body portion being retractable with a change in pressure in the accommodation chamber,

the main body part is provided with a liquid injection channel which penetrates through the main body part.

2. The lithium battery liquid injection nozzle according to claim 1, wherein an end portion of the main body portion, which is in contact with the lithium battery, is provided with a liquid injection end portion, the liquid injection end portion is adapted to abut against the lithium battery, and the main body portion is adapted to drive the liquid injection end portion to move when being moved telescopically.

3. The liquid injection nozzle of a lithium battery as claimed in claim 1, wherein the receiving chamber surrounds an outer periphery of the liquid injection passage.

4. The lithium battery electrolyte injection nozzle as defined in claim 1, further comprising an adjusting branch, wherein the adjusting branch is communicated with the accommodating chamber for adjusting the internal pressure of the accommodating chamber.

5. The lithium battery electrolyte injection nozzle as defined in claim 4, wherein the adjusting branch is provided with an adjusting valve with an adjustable opening.

6. The liquid injection nozzle of a lithium battery as claimed in claim 5, wherein a check valve is provided on the adjustment branch.

7. The lithium battery charging nozzle as defined in claim 1, wherein the main body has a truncated cone shape, and the charging passage extends through an upper end surface and a lower end surface of the truncated cone.

8. The lithium battery pour spout of claim 1, wherein the main body portion is a rubber member.

9. A filling device characterized by comprising a filling nozzle of a lithium battery according to any one of claims 1 to 8.

10. The infusion device as in claim 9, wherein the infusion nozzle is multiple.

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