CN210489775U

CN210489775U - Liquid receiving device and negative pressure formation system

Info

Publication number: CN210489775U
Application number: CN201922073349.9U
Authority: CN
Inventors: 张建华; 杨何涛; 刘家奎; 何侦元
Original assignee: Superstar Shenzhen Automation Co ltd
Current assignee: Superstar Shenzhen Automation Co ltd
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2020-05-08
Anticipated expiration: 2029-11-22

Abstract

The utility model provides a liquid receiving device and a negative pressure formation system, which relate to the technical field of battery production, the utility model provides a liquid receiving device, the liquid receiving device comprises a cup body, and the cup body is provided with an air inlet and an air outlet which are communicated with the inner cavity of the cup body; a partial cavity wall of the inner cavity is located at a front end of the air inlet in an air inlet direction along which the air inlet enters the inner cavity, and is opposite to the air inlet. When the evacuation, during gasified electrolyte can inhale the cup through the air inlet, cools off the liquefaction between air inlet and gas outlet to keep in the inner chamber of cup, because of the partial cavity wall of the air inlet direction orientation inner chamber of air inlet, the electrolyte that gets into the inner chamber from the air inlet receives blocking on partial cavity wall, so, electrolyte can not directly take out the vacuum pipe-line system in through the gas outlet in, avoided causing the harm to the vacuum pipeline.

Description

Liquid receiving device and negative pressure formation system

Technical Field

The utility model belongs to the technical field of the square-shell battery formation technique and specifically relates to a connect liquid device and negative pressure formation system is related to.

Background

Negative pressure formation is a very important link for a power square-shell battery, and the quality of an electrolyte interface film (SEI) has a direct influence on the service life, capacity, safety and self-discharge performance of the battery.

Harmful gas can be generated in the negative pressure formation process, the harmful gas can be discharged through a liquid injection port in a negative pressure pumping mode at the moment, the health of workers is prevented from being damaged, the battery formation process is realized, the structure for directly butting the liquid storage port of the power square-shell battery in the current negative pressure formation equipment is called a negative pressure liquid receiving cup, the harmful gas in the power battery is pumped away through negative pressure, part of electrolyte can be taken out while the negative pressure is pumped, the electrolyte can be temporarily stored in the negative pressure liquid receiving cup, and the electrolyte is injected into the battery again when the vacuum is broken so as to avoid electrolyte waste.

The existing negative pressure liquid cup has the following defects: the air inlet and the air outlet of the existing negative pressure connection liquid cup are arranged oppositely, and during actual operation, gasified electrolyte can be directly pumped into a vacuum system, so that normal operation of a negative pressure formation process is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a connect liquid device to solve among the prior art because of the negative pressure connect the air inlet and the gas outlet of liquid cup to set up relatively, when actual operation, in the vacuum system can directly be taken out to the electrolyte of gasification, thereby influences the technical problem that the negative pressure becomes the normal clear of technology.

The utility model provides a liquid receiving device, which comprises a cup body, wherein the cup body is provided with an air inlet and an air outlet which are communicated with an inner cavity of the cup body;

part of the cavity wall of the inner cavity is located at the front end of the air inlet in the air inlet direction of the air inlet to the inner cavity along the air inlet and is opposite to the air inlet.

Further, the extending directions of the air inlet and the air outlet are parallel.

Furthermore, one end of the cup body, which is far away from the air outlet, is connected with a guide rod, a through hole is formed in the guide rod, the through hole is communicated with the inner cavity of the cup body to form the air inlet, and one end, which is far away from the cup body, of the guide rod is used for being connected with a liquid inlet of a battery.

Further, the liquid receiving device comprises a mounting seat and an elastic component, wherein the mounting seat is sleeved on the guide rod and can slide along the length direction of the guide rod;

a first rotation locking structure is arranged between the guide rod and the mounting seat and used for locking the rotation between the mounting seat and the guide rod in the circumferential direction of the guide rod when the mounting seat and the guide rod slide;

one end of the elastic component is connected with the mounting seat, and the other end of the elastic component is connected with the end part of the guide rod, which is far away from the cup body.

Furthermore, the section perpendicular to the length direction of the guide rod is flat, and the mounting seat is provided with a through hole corresponding to the section in shape, so that the mounting seat and the guide rod which are connected in a sliding manner can be mutually rotated and locked in the circumferential direction of the guide rod.

Furthermore, the cross section perpendicular to the length direction of the guide rod is polygonal, a through hole penetrating through the upper surface and the lower surface of the mounting seat is formed in the mounting seat, and the through hole is a polygonal through hole corresponding to the cross section.

Furthermore, the through hole is connected with the cup body through a guide channel, and the cross section area of the guide channel is gradually increased along the direction of the guide rod towards the cup body;

the inner wall of one end of the cup body, which is far away from the cup cover, is connected with one end of the guide channel through an arc transition part, so that the electrolyte in the cup body flows into the battery.

Furthermore, one end of the guide rod, which is far away from the cup body, is provided with a threaded portion, the threaded portion is connected with a nut, the guide rod is sleeved with the elastic component, one end of the elastic component is abutted to the side face, facing the threaded portion, of the mounting seat, and the other end of the elastic component is abutted to the nut.

Furthermore, the cup body is made of transparent materials.

A negative pressure formation system comprises a suction nozzle, a fixing plate and the liquid receiving device;

the suction nozzle is used for being connected with the liquid inlet of battery, the fixed plate is used for fixing connect the liquid device.

The utility model provides a liquid receiving device, which comprises a cup body, wherein the cup body is provided with an air inlet and an air outlet which are communicated with an inner cavity of the cup body; part of the cavity wall of the inner cavity is located at the front end of the air inlet in the air inlet direction of the air inlet to the inner cavity along the air inlet and is opposite to the air inlet. During vacuumizing, gasified electrolyte can be sucked into the inner cavity of the cup body through the air inlet, is cooled and liquefied between the air inlet and the air outlet and is temporarily stored in the inner cavity of the cup body, and the electrolyte entering the inner cavity from the air inlet is blocked by partial cavity walls because the air inlet direction of the air inlet faces to partial cavity walls of the inner cavity, so that the electrolyte cannot be directly pumped into a vacuum pipeline system through the air outlet, and the damage to a vacuum pipeline is avoided.

The utility model provides a negative pressure becomes system, including foretell liquid device that connects, so, also have connect the advantage of liquid device.

Drawings

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

Fig. 1 is a front view of a liquid receiving device provided in embodiment 1 of the present invention;

fig. 2 is a left side view of the liquid receiving device provided in embodiment 1 of the present invention;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is a cross-sectional view taken at C-C of FIG. 2;

fig. 5 is a schematic cross-sectional view of a guide rod and a mounting seat of a liquid receiving device provided in embodiment 2 of the present invention;

fig. 6 is a schematic structural view of the negative pressure formation system provided by the embodiment of the present invention.

Icon: 10-a liquid receiving device; 20-a battery; 30-a suction nozzle; 40-fixing the plate; 100-cup body; 101-an air inlet; 102-an air outlet; 110-a cup body; 111-an arcuate transition; 112-a guide channel; 120-an end cap; 200-a guide rod; 201-a first plane; 202-a second plane; 203-a first arc-shaped face; 204-a second arc-shaped face; 210-a second reinforcing rib; 300-a linker; 310-a first reinforcing bead; 400-a mounting seat; 410-positioning markers; 500-a spring; 600-a nut; 700-shim.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

As shown in fig. 1-4, the liquid receiving device 10 of the present invention includes a cup body 100, and the cup body 100 is provided with an air inlet 101 and an air outlet 102 communicated with an inner cavity of the cup body 100.

A partial cavity wall of the inner cavity is located at the front end of the air inlet 101 in the air inlet direction of the air inlet 101 into the inner cavity, and is opposite to the air inlet 101.

During in actual use, during gasified electrolyte can inhale cup 100 through air inlet 101, cools off the liquefaction between air inlet 101 and gas outlet 102 to store in cup 100's inner chamber temporarily, because of the partial cavity wall of the air inlet direction towards the inner chamber of air inlet 101, the electrolyte that gets into the inner chamber from air inlet 101 receives blocking of partial cavity wall, so, electrolyte can not directly take out to the vacuum piping system in through gas outlet 102, avoided causing the harm to the vacuum piping.

The path of the inlet 101 and the path of the outlet 102 do not coincide so that the direction of the inlet air is opposite to part of the wall of the inner chamber.

It should be noted that the extension path of the gas inlet 101 and the extension path of the gas outlet 102 may be overlapped, but a part of the cavity wall is required to be located between the gas inlet 101 and the gas outlet 102, so that the gas inlet direction is directly opposite to the part of the cavity wall, and the electrolyte entering the inner cavity is prevented from directly entering the vacuum pipeline system through the gas outlet 102.

Preferably, the extending directions of the air inlet 101 and the air outlet 102 are parallel.

As shown in fig. 3, in the present embodiment, air inlet 101 is disposed on a lower end surface of cup 100, air outlet 102 is disposed on an upper end surface of cup 100, and extending directions of air inlet 101 and air outlet 102 are parallel to each other, and projections of air inlet 101 and air outlet 102 in a horizontal plane do not intersect.

One end of the cup body 100, which is far away from the air outlet 102, is connected with a guide rod 200, a through hole is formed in the guide rod 200, the through hole is communicated with an inner cavity of the cup body 100 to form an air inlet 101, and one end of the guide rod 200, which is far away from the cup body 100, is used for being connected with a liquid inlet of the battery 20.

Specifically, the through hole runs through the upper and lower surfaces of the guide rod 200, one end of the through hole is communicated with the inner cavity of the cup body 100, and the other end of the through hole is communicated with the liquid inlet of the battery 20, so that harmful gas generated by the battery 20 in the formation process can enter the inner cavity of the cup body 100 through the through hole formed in the guide rod 200 and enter the negative pressure pipeline system through the gas outlet 102, and harm to workers is avoided.

Preferably, the liquid receiving device 10 includes a mounting seat 400 and an elastic component, wherein the mounting seat 400 is sleeved on the guide rod 200 and can slide along the length direction of the guide rod 200.

A first rotation locking structure for locking rotation between the mount 400 and the guide bar 200 in a circumferential direction of the guide bar 200 when the mount 400 slides with the guide bar 200 is provided between the guide bar 200 and the mount 400.

One end of the elastic member is connected to the mounting seat 400, and the other end is connected to the end of the guide rod 200 away from the cup body 100.

Preferably, the elastic member may employ a spring 500.

The conventional negative pressure liquid receiving cup has no guiding function, the mounting seat 400 and the guide rod 200 can rotate to cause that the cup cannot be reset after being compressed, and the continuity of operation can be influenced.

As shown in fig. 4, in the present embodiment, the cross section perpendicular to the length direction of the guide bar 200 is flat, and the mounting seat 400 is provided with a through hole corresponding to the shape of the cross section of the guide bar 200, so that the mounting seat 400 and the guide bar 200, which are slidably connected, are locked to each other in the circumferential direction of the guide bar 200.

Specifically, the guide bar 200 includes a first plane 201 and a second plane 202 extending along a length direction thereof, and the first plane 201 and the second plane 202 are arranged in parallel. The guide rod 200 includes a first arc-shaped surface 203 and a second arc-shaped surface 204 extending along a length direction thereof, one side of the first arc-shaped surface 203 is connected with one side of the first plane 201, the other side of the first plane 201 is connected with one side of the second arc-shaped surface 204, the other side of the second arc-shaped surface 204 is connected with one side of the second plane 202, and the other side of the second plane 202 is connected with the other side of the first arc-shaped surface 203.

The through hole of the mounting seat 400 is a hole with a shape and size corresponding to the cross section of the guide rod 200, and the guide rod 200 is inserted into the through hole, so that the mounting seat 400 can slide along the length direction of the guide rod 200, but cannot rotate in the guiding circumferential direction.

When the liquid receiving device 10 contacts the liquid inlet of the battery 20 through the connection suction nozzle 30, the spring 500 is compressed, the first plane 201 and the second plane of the guide rod 200 guide the mounting seat 400, so that the problems of rotation, blockage, no reset and the like between the mounting seat 400 and the guide rod 200 when the spring 500 is compressed by the liquid receiving device 10 are effectively prevented, and meanwhile, the mounting seat 400 is provided with the positioning mark 410 for mounting, so that the mounting and maintenance of the liquid receiving device 10 are facilitated.

Preferably, the through hole is connected with the inner cavity of the cup body 100 through a guide passage 112, and the cross-sectional area of the guide passage 112 is gradually increased toward the cup body 100 along the guide rod 200.

The inner wall of the end of the cup 100 away from the cap is connected to the end of the guide channel 112 by an arc-shaped transition part 111, so that the electrolyte in the cup 100 can rapidly flow into the battery 20.

Specifically, in the present embodiment, the cross section of the guide channel 112 is circular, and the diameter of the guide channel 112 gradually increases along the guide rod 200 toward the cup 100, so that the electrolyte in the inner cavity of the cup 100 can flow to the liquid inlet of the battery 20 through the through hole to play a role in guiding.

Meanwhile, the connection between the inner cavity of the cup body 100 and the guide channel 112 is connected by the arc transition part 111, so that the electrolyte sucked into the inner cavity of the cup body 100 can smoothly flow into the through hole of the guide rod 200 through the arc transition part 111, and the electrolyte cannot remain in the inner cavity of the cup body 100, thereby causing crystallization of the electrolyte, and avoiding blockage of a negative pressure vacuum pipeline and waste of the electrolyte.

Preferably, one end of the guide rod 200, which is away from the cup body 100, is provided with a threaded portion, the threaded portion is connected with the nut 600, the elastic member is sleeved on the guide rod 200, one end of the elastic member abuts against a side surface of the mounting seat 400, which faces the threaded portion, and the other end of the elastic member abuts against the nut 600.

Specifically, in the present embodiment, the elastic member is a spring 500, the spring 500 is sleeved on the guide rod 200, one end of the spring 500 abuts against the bottom surface of the mounting seat 400 facing the threaded portion of the guide rod 200, and the other end abuts against a nut 600 screwed on the threaded portion, that is, the other end of the spring 500 abuts against the side surface of the nut 600 facing the mounting seat 400.

Preferably, the spacer 700 is fitted on the threaded portion of the guide bar 200 and fixed by the nut 600, and the other end of the spring 500 abuts against the side of the spacer 700 facing the mounting seat 400.

Preferably, the cup body 100 is made of a transparent material, so that a worker can observe the electrolyte in the cup conveniently.

Specifically, the cup 100 may be made of transparent polytetrafluoroethylene (teflon).

Cup 100 includes end cover 120 and cup body 110, is connected with on the end cover 120 and connects 300, connects 300 and is used for being connected with the negative pressure pipeline, is provided with the through-hole in the connecting 300, and this through-hole communicates with the inner chamber of cup 100, forms gas outlet 102.

In the first step, the end cap 120 and the joint 300 are formed through a one-step molding process, and the joint of the joint 300 and the end cap 120 is provided with the first reinforcing rib 310, so that air leakage caused by fracture and rotation of the joint 300 due to insufficient strength is prevented.

And secondly, the cup body 110 and the guide rod 200 are formed by one-step forming process, and the second reinforcing rib 210 is arranged at the joint of the guide rod 200 and the cup body 110, so that the strength of the guide rod 200 can be ensured, and the guide rod 200 is prevented from being broken and rotated to leak air due to insufficient strength.

Thirdly, the end cap 120 and the cup body 110 are connected into a whole through a hot melting process.

Finally, the mount 400, the spring 500, the spacer 700, and the nut 600 are assembled to form the liquid receiving apparatus 10.

The joint 300, the guide rod 200, the spring 500, the gasket 700 and the nut 600 may be made of stainless steel, and the mounting seat 400 may be made of Polycarbonate (PC) and glass fiber, so that the liquid receiving device 10 is resistant to high temperature aging and electrolyte corrosion.

It should be noted that the cup body 100 may have a circular or square structure so that the cup body 100 can be adapted to different space structures, and when the liquid receiving device 10 is used in a square space, the cup body 100 preferably has a square structure so that the volume of the cup body 100 is larger in the same space.

In addition, when the liquid receiving apparatus 10 is used in a circular space, it is preferable that the cup body 100 is circular, so that the volume of the cup body 100 is larger in the same space.

Example 2

As shown in fig. 5, the difference from embodiment 1 is that the cross section perpendicular to the length direction of the guide bar 200 is polygonal, and the mounting seat 400 is provided with a through hole penetrating through the upper and lower surfaces thereof, the through hole being a polygonal through hole corresponding to the cross section of the guide bar 200.

Specifically, the cross section of the sliding connection part of the guide rod 200 and the mounting seat 400 is square, the through hole on the mounting seat 400 is also square, the guide rod 200 is inserted into the through hole, and the guide rod and the through hole can be in clearance fit, so that the mounting seat 400 can slide along the length direction of the guide rod 200, and the mounting seat 400 cannot rotate in the circumferential direction of the guide rod 200 when sliding, and the mounting seat 400 is prevented from being unable to reset due to blockage.

It should be noted that the cross section of the guide bar 200 may be triangular, pentagonal, hexagonal, etc.

As shown in fig. 6, a negative pressure formation system includes a suction nozzle 30, a fixing plate 40 and the liquid receiving device 10.

The suction nozzle 30 is used for being connected with a liquid inlet of the battery 20, and the fixing plate 40 is used for fixing the liquid receiving device 10.

To sum up, in the liquid receiving device 10 provided by the present invention, the liquid receiving device 10 includes a cup body 100, and the cup body 100 is provided with an air inlet 101 and an air outlet 102 communicated with an inner cavity of the cup body 100; a partial cavity wall of the inner cavity is located at the front end of the air inlet 101 in the air inlet direction of the air inlet 101 into the inner cavity, and is opposite to the air inlet 101. During the evacuation, during gasified electrolyte can inhale cup 100 through air inlet 101, cools off the liquefaction between air inlet 101 and gas outlet 102 to store in cup 100's inner chamber temporarily, because of the partial cavity wall of the air inlet 101's direction of admitting air towards the inner chamber, the electrolyte that gets into the inner chamber from air inlet 101 receives blocking of partial cavity wall, so, in electrolyte can not directly take out the vacuum piping system through gas outlet 102, avoided causing the harm to the vacuum piping.

The utility model provides a connect liquid device 10 has following advantage compared in current negative pressure crimping liquid cup:

1. the air inlets 101 and the air outlets 102 of the liquid receiving devices 10 are staggered with each other, and gasified electrolyte can be cooled and liquefied during vacuum pumping, is temporarily stored in the integrated negative pressure liquid receiving cup, and cannot be pumped into a vacuum pipeline system.

2. The liquid receiving device 10 is formed by adopting an integrated process, the manufacturing cost is low, the sealing effect is good, the qualification rate is up to 99%, the formation is more stable, and the performance of the battery 20 is improved;

3. the cup body 100 is made of polytetrafluoroethylene (Teflon), the electrolytic corrosion resistance effect of the polytetrafluoroethylene is better than that of polycarbonate through verification, and the guide rod 200 and the joint 300 are made of stainless steel materials, high temperature resistance and corrosion resistance.

4. The cup body 100 adopts a square structure, the internal volume of the same square space is maximized, and the comparative volume of the cup body with the circular shape is more than 30 percent of that of the circular shape.

5. The cup body 110 and the end cover 120 of the liquid receiving device 10 are formed by hot melting, so that the sealing effect and the service life are better.

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, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A liquid receiving device is characterized by comprising a cup body, wherein the cup body is provided with an air inlet and an air outlet which are communicated with an inner cavity of the cup body;

2. The fluid receiving device as claimed in claim 1, wherein the air inlet and the air outlet extend in parallel directions.

3. The liquid receiving device according to claim 1, wherein a guide rod is connected to an end of the cup body away from the air outlet, a through hole is formed in the guide rod, the through hole is communicated with an inner cavity of the cup body to form the air inlet, and an end of the guide rod away from the cup body is used for being connected with a liquid inlet of a battery.

4. The liquid receiving device according to claim 3, wherein the liquid receiving device comprises a mounting seat and an elastic component, the mounting seat is sleeved on the guide rod and can slide along the length direction of the guide rod;

5. The liquid receiving device according to claim 4, wherein a cross section perpendicular to the length direction of the guide rod is flat, and the mounting seat is provided with a through hole corresponding to the shape of the cross section, so that the mounting seat and the guide rod which are connected in a sliding manner are locked in rotation in the circumferential direction of the guide rod.

6. The liquid receiving device according to claim 4, wherein a cross section perpendicular to the length direction of the guide rod is polygonal, the mounting base is provided with a through hole penetrating through the upper and lower surfaces of the mounting base, and the through hole is a polygonal through hole corresponding to the cross section.

7. The liquid receiving device according to claim 5, wherein the through hole is connected with the cup body through a guide channel, and the cross-sectional area of the guide channel is gradually increased along the guide rod towards the cup body;

the inner wall of one end of the cup body, which is far away from the air outlet, is connected with one end of the guide channel through an arc transition part, so that the electrolyte in the cup body flows into the battery.

8. The liquid receiving device according to claim 4, wherein a threaded portion is formed in one end, away from the cup body, of the guide rod, a nut is connected to the threaded portion, the elastic member is sleeved on the guide rod, one end of the elastic member abuts against a side face, facing the threaded portion, of the mounting seat, and the other end of the elastic member abuts against the nut.

9. The liquid receiving device according to any one of claims 1 to 8, wherein the cup body is made of a transparent material.

10. A negative pressure formation system, comprising a suction nozzle, a fixing plate and the liquid receiving device according to any one of claims 1 to 9;