CN211125812U

CN211125812U - Liquid injection cup

Info

Publication number: CN211125812U
Application number: CN201921842779.6U
Authority: CN
Inventors: 陈浩淞; 严植攀; 刘红尧; 余其祥
Original assignee: Dongguan Tec Rich Engineering Co Ltd
Current assignee: Dongguan Tec Rich Engineering Co Ltd
Priority date: 2019-10-30
Filing date: 2019-10-30
Publication date: 2020-07-28
Anticipated expiration: 2029-10-30

Abstract

The utility model discloses an annotate liquid cup, including the cup, the cup top is equipped with inlet channel, and the cup bottom is connected with annotates the liquid subassembly, annotates the liquid subassembly and includes bottom cup lid, sealed lid and annotate the liquid mouth, bottom cup lid and cup sealing connection, annotate the liquid mouth and adopt sealed lid sealing connection with the bottom cup lid, annotate the liquid passageway that is equipped with the intercommunication in liquid mouth and the bottom cup lid, annotate and be equipped with the spring between liquid mouth and the bottom cup lid, when annotating the liquid, the spring makes to annotate liquid mouth and battery and keeps closely laminating. A backflow pipe of an inverted U-shaped structure is arranged between the liquid injection assembly and the cup body so as to inject the battery liquid in a pressure difference mode. The utility model has the advantages that: a spring is arranged between the liquid injection nozzle of the liquid injection assembly and the cup bottom cover, the spring is partially compressed during liquid injection, and when the external pressure changes, the spring can keep the liquid injection nozzle tightly connected with the battery, so that the electrolyte is prevented from splashing; establish the back flow between cup and notes liquid subassembly, utilize pressure differential to lead the liquid, effectively avoid annotating liquid subassembly dropping liquid.

Description

Liquid injection cup

Technical Field

The utility model relates to a battery annotates liquid technical field, especially a annotate liquid cup.

Background

The lithium battery has the advantages of high capacity, small volume, long service life and the like, and is widely applied to the fields of mobile phones, computers and the like. In particular to the aspect of new energy automobiles, the hard shell lithium battery is used as 'gasoline' of the new energy automobiles, and the cruising ability of the new energy automobiles is determined by the quality of the lithium battery. The lithium battery electrolyte injection is a crucial step in the lithium battery production process. The electrolyte of the lithium battery is a carrier for ion transmission in the battery, plays a role in conducting ions between the positive electrode and the negative electrode of the lithium battery, and is a guarantee for the lithium battery to obtain the advantages of high voltage, high specific energy and the like. Current lithium cell annotates liquid machine is when the function, will annotate the notes liquid entry of annotating the liquid mouth sealing connection lithium cell of liquid cup and annotate liquid, and when the in-service use, when annotating liquid machine and annotating electrolyte, electrolyte direct impact annotates the liquid subassembly, causes slight mechanical vibration, causes easily to annotate liquid mouth and lithium cell and annotates liquid entry dislocation, causes electrolyte to splash, influences the accuracy nature of annotating the liquid volume.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to the not enough of above-mentioned prior art, a annotate liquid cup is provided.

In order to solve the technical problem, the utility model discloses the technical scheme who takes is: the utility model provides a annotate liquid cup, comprising a cup body, the cup top is equipped with inlet channel, the cup bottom is connected with annotates the liquid subassembly, it includes the bottom of cup lid to annotate the liquid subassembly, sealed lid and notes liquid mouth, bottom of cup lid and cup body sealing connection, it adopts sealed lid sealing connection together to annotate liquid mouth and bottom of cup lid, annotate the liquid passageway that is equipped with the intercommunication in liquid mouth and the bottom of cup lid, it is equipped with the spring to annotate between liquid mouth and the bottom of cup lid, annotate the liquid mouth under spring and exogenic action, can move in the vertical direction for the bottom of cup lid, keep.

In the technical scheme, the cup bottom cover and the cup body are in sealing connection by adopting a sealing ring.

In the technical scheme, a spring pad is arranged between the spring and the liquid injection nozzle.

In the technical scheme, the cup bottom cover is in threaded connection with the sealing cover.

In the technical scheme, more than 1 liquid inlet is arranged on the liquid inlet channel in the horizontal direction, and liquid is sprayed out from the liquid inlet in the horizontal direction.

In the technical scheme, the cup bottom cover is connected with an opening at one end of the return pipe, an opening at the other end of the return pipe is fixed at a position close to the bottom end of the cup body, and the return pipe is integrally of an inverted U-shaped structure.

In the technical scheme, the device also comprises a liquid injection needle assembly, wherein the liquid injection needle assembly comprises a liquid injection needle, a support platform and an air cylinder, the liquid injection needle is fixed on the support platform, the air cylinder is connected with the support platform, guide rods are connected to two sides of the support platform, the air cylinder drives the liquid injection needle assembly to move up and down, and the guide rods assist in guiding; the bottom of annotating the liquid needle is equipped with annotates liquid needle mouth, annotates liquid needle mouth and is equipped with the sealing washer, and the top of annotating the liquid needle is equipped with the electrolyte entry, and the diaphragm valve is installed to the electrolyte entry, annotates liquid needle side end and is equipped with the vacuum source interface, annotates inside switching on of liquid needle mouth, electrolyte entry and vacuum source interface.

In the technical scheme, a spring structure is arranged on the main body of the liquid injection needle, so that the liquid injection needle is conveniently connected and contacted with a liquid inlet channel of the cup body.

The utility model has the advantages that: a spring is arranged between the liquid injection nozzle of the liquid injection assembly and the cup bottom cover, the spring is partially compressed during liquid injection, and when the external pressure changes, the spring can keep the liquid injection nozzle tightly connected with the battery, so that the electrolyte is prevented from splashing; be equipped with the back flow between cup and notes liquid subassembly, utilize pressure differential to lead the liquid, can effectually avoid annotating the condition of liquid subassembly dropping liquid.

Drawings

Fig. 1 is a schematic view of the overall structure of the liquid pouring cup of the present invention.

Fig. 2 is a schematic cross-sectional view at a position a in fig. 1.

Fig. 3 is an enlarged view of the position B in fig. 2.

Fig. 4 is a schematic view of the whole structure of the liquid injection cup of the liquid injection needle assembly of the present invention.

Fig. 5 is a schematic view of the overall structure of the injection needle assembly of the present invention.

Fig. 6 is a sectional structural view at the position C in fig. 5.

In the figure, 1-cup body; 2-a liquid inlet channel; 3-a liquid injection assembly; 31-cup bottom cover; 32-a sealing cover; 33-liquid injection nozzle; 34-a spring; 35-spring pad; 36-a first sealing ring; 4-a return pipe; 5-an injection needle assembly; 51-liquid injection needle; 511-injection needle mouth; 512-second seal ring; 513-an electrolyte inlet; 514-diaphragm valves; 515-vacuum source interface; 52-a gantry stage; 53-cylinder; 54-guide bar.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The utility model provides a annotate liquid cup, annotate liquid cup's main part is a cup 1, and cup 1 designs for columnar structure, and cup 1's top is equipped with inlet channel 2, and inlet channel 2 is connected with outside electrolyte pipeline, and cup 1's inside is for depositing the cavity of electrolyte, and cup 1's bottom is connected with annotates liquid subassembly 3. The liquid injection assembly 3 comprises a cup bottom cover 31, a sealing cover 32 and a liquid injection nozzle 33. The cup bottom cover 31 is connected with the cup body 1 in a sealing mode, the cup bottom cover 31 and the cup body 1 can be sealed at the connecting position through the first sealing ring 36, a through hole is formed in the middle of the cup bottom cover 31, and a groove matched with the liquid filling nozzle 33 is formed in the bottom of the cup bottom cover 31. The sealing cover 32 is of a concave hollow structure, the liquid injection nozzle 33 is arranged in a groove of the sealing cover, and a nozzle part of the liquid injection nozzle 33 extends out of the hollow position; the cup bottom cover 31 is connected with the sealing cover 32, the liquid injection nozzle 33 is limited in a space formed by the groove of the cup bottom cover 31 and the groove of the sealing cover 32, and a through hole is also arranged in the liquid injection nozzle 33 to convey electrolyte. The bottom cover 31 and the sealing cover 32 can be connected by threads, at the connecting position, the bottom cover 31 is provided with external threads, the sealing cover 32 is provided with internal threads, and the internal threads and the external threads are matched with each other to enable the bottom cover 31 and the sealing cover 32 to be connected in a sealing manner.

In order to ensure that the liquid injection nozzle 33 can be kept to be fully attached to the battery to be injected under the condition that the whole liquid injection machine slightly vibrates, a groove is also arranged in the liquid injection nozzle 33, a spring 34 is arranged in the groove, one end of the spring 34 is in contact with the bottom of the groove of the liquid injection nozzle 33, the other end of the spring 34 is in contact with the bottom of the groove of the cup bottom cover 31, and a spring pad 35 can be additionally arranged on the contact surface of the spring 34 and the liquid injection nozzle 33. In a natural state, the pouring spout 33 receives the elastic force of the spring 34, and the pouring spout 33 is closely attached to the bottom of the groove of the sealing lid. When the liquid injection cup needs to inject liquid into the battery, the liquid injection nozzle 33 is connected with the battery and is pressed by the battery shell, the spring 34 is compressed, and the liquid injection nozzle 33 is tightly attached to the battery. If the liquid pouring cup and the battery are affected by external vibration at this time, the spring 34 is loosened according to the change of the external force, and the position of the liquid pouring nozzle 33 is adjusted so that the liquid pouring nozzle 33 and the battery are kept attached.

Further, a return pipe 4 is provided in the cup body 1. The whole backflow pipe 4 is of an inverted U-shaped structure, one end opening of the backflow pipe 4 is connected with the cup bottom cover 31, and the other end opening is fixed at the position close to the bottom end of the cup body 1. When the battery is not connected, the electrolyte enters the cup body 1 from the liquid inlet channel 2, and the electrolyte needs to pass through the return pipe 4 to leave the cup body from the liquid injection nozzle 33. Because the return pipe 4 is an inverted U-shaped structure, electrolyte can not be added when the battery is not connected. After the electrolyte is added into the cup body 1, the liquid injection nozzle 33 is connected with the battery to be injected, the interior of which is vacuumized. Because the interior of the battery is in a vacuum state, the interior of the main body 1 is in a normal pressure state, and the electrolyte is pressed into the return pipe 4 under the pressure difference of the two, and flows through the liquid injection assembly 3 along the return pipe 4 to enter the battery. And after the battery is filled with the electrolyte, the pressure difference disappears, and the electrolyte cannot enter the battery, so that the filling of the battery electrolyte is completed.

The existing liquid inlet channel 2 directly adds electrolyte into the cup body 1, and the electrolyte is directly added downwards from the top end of the cup body 1 and can just drop on the return pipe 4, so that the electrolyte splashes. For avoiding above-mentioned condition, inlet 2's inlet sets up on the horizontal direction, and the quantity of inlet is more than 1, and electrolyte spouts from the inlet towards the horizontal direction, and the electrolyte spouts on the lateral wall of cup 1, flows to the bottom of cup 1 along the lateral wall.

As shown in fig. 4 and 5, the upper end of the liquid injection cup is connected with a liquid injection needle assembly, the liquid injection needle assembly comprises a liquid injection needle, a support platform and a cylinder, the liquid injection needle is fixed on the support platform, the cylinder is connected with the support platform, guide rods are connected with two sides of the support platform, the cylinder drives the liquid injection needle assembly to move up and down, and the guide rods assist in guiding. The main body of the liquid injection needle is provided with a spring structure which is convenient to be connected and contacted with the liquid injection cup, the bottom end of the liquid injection needle is provided with a liquid injection needle port which is used for being connected with the liquid inlet channel 2, and a sealing ring is arranged at the connecting position of the liquid injection needle port and the liquid inlet channel 2; the top end of the liquid injection needle is provided with an electrolyte inlet, and the electrolyte inlet is provided with a diaphragm valve for controlling the injection of the electrolyte; a vacuum source interface is arranged at the side end of the liquid injection needle and is connected with an external vacuumizing assembly; the liquid injection needle port, the electrolyte inlet and the vacuum source interface are communicated.

The liquid injection of the liquid injection cup comprises the following specific steps:

(1) the liquid injection needle port is connected with the liquid inlet channel 2, and the liquid injection nozzle 33 is connected with a battery to be injected;

(2) the diaphragm valve is in a closed state, the vacuum source vacuumizes the liquid injection cup and the battery to be injected through the vacuum source interface until a set vacuum value is reached, and the vacuum source is closed for vacuumizing;

(3) opening the diaphragm valve to conduct an electrolyte inlet, enabling the electrolyte to enter the cup body 1 from the liquid injection needle under the action of pressure difference and gravity, enabling the electrolyte to overcome the gravity to enter the return pipe under the action of the pressure difference, and injecting the electrolyte into the battery through the liquid injection assembly 3;

(4) after the battery is filled with the electrolyte, no pressure difference exists between the inside of the battery and the inside of the cup body 1, and the electrolyte cannot enter the inside of the battery;

(5) and closing the diaphragm valve, separating the liquid injection needle port from the liquid inlet channel 2, and separating the liquid injection nozzle 33 from the battery to be injected to finish the liquid injection work.

The above embodiments are merely illustrative and not restrictive, and all equivalent changes and modifications made by the methods described in the claims are intended to be included within the scope of the present invention.

Claims

1. A annotate liquid cup which characterized in that: including the cup, the cup top is equipped with inlet channel, and the cup bottom is connected with annotates the liquid subassembly, annotate the liquid subassembly and include bottom of cup lid, sealed lid and annotate the liquid mouth, bottom of cup lid and cup body sealing connection, annotate the liquid mouth and adopt sealed lid sealing connection together with the bottom of cup lid, annotate the liquid passageway that is equipped with the intercommunication in liquid mouth and the bottom of cup lid, annotate and be equipped with the spring between liquid mouth and the bottom of cup lid, annotate the liquid mouth under spring and exogenic action, can move on the vertical direction for bottom of cup lid, keep closely laminating with the battery when annotat.

2. The pouring cup according to claim 1, wherein: and the cup bottom cover is connected with the cup body in a sealing way by adopting a sealing ring.

3. The pouring cup according to claim 1, wherein: and a spring pad is arranged between the spring and the liquid injection nozzle.

4. The pouring cup according to claim 1, wherein: the cup bottom cover is in threaded connection with the sealing cover.

5. The pouring cup according to claim 1, wherein: the liquid inlet channel is provided with more than 1 liquid inlet in the horizontal direction, and liquid is sprayed out from the liquid inlets in the horizontal direction.

6. The pouring cup according to any of claims 1 to 5, wherein: the cup bottom cover is connected with the opening at one end of the backflow pipe, the opening at the other end of the backflow pipe is fixed at the position close to the bottom end of the cup body, and the backflow pipe is integrally of an inverted U-shaped structure.

7. The pouring cup according to claim 6, wherein: the liquid injection needle assembly comprises a liquid injection needle, a support platform and a cylinder, the liquid injection needle is fixed on the support platform, the cylinder is connected with the support platform, guide rods are connected with two sides of the support platform, the cylinder drives the liquid injection needle assembly to move up and down, and the guide rods assist in guiding; annotate the bottom of liquid needle and be equipped with notes liquid needle mouth, annotate liquid needle mouth and be equipped with the sealing washer, the top of annotating the liquid needle is equipped with the electrolyte entry, and the diaphragm valve is installed to the electrolyte entry, annotates the liquid needle side and is equipped with the vacuum source interface, annotates inside switching on of liquid needle mouth, electrolyte entry and vacuum source interface.

8. The pouring cup according to claim 7, wherein: the main body of the liquid injection needle is provided with a spring structure, so that the liquid injection needle is convenient to be connected and contacted with a liquid inlet channel of the cup body.