Helium cleaning and blowing system

Abstract

The utility model provides a helium cleaning blowing system, relates to helium cleaning technical field, including the work bench, the work bench lower surface is fixedly equipped with a plurality of cavities, the work bench upper surface is equipped with the avoiding groove at each cavity position, and each cavity inner wall lower surface side is equipped with the exhaust hole in penetrating mode. One side of the lower surface of the inner wall of each cavity is provided with a gas inlet, the other side of the lower surface of the inner wall of each cavity is provided with a gas exhaust hole in a penetrating manner, and one side of the upper surface of each cavity is provided with a gas exhaust assembly used for exhausting residual helium in the cavity. The helium in the cavity is diluted under purging of the nitrogen, then a worker starts the air exhaust assembly, the helium diluted by the nitrogen is discharged out of the system after the air exhaust assembly is started, the helium cleaning time is greatly shortened, and then the working efficiency of the whole machine is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of helium cleaning, in particular to a helium cleaning blowing system. Background Art

[0002] A battery cell refers to a single electrochemical cell containing positive and negative electrodes, which is generally not used directly. The composition of a lithium battery is composed of a battery cell and a protection circuit board. The battery cell is a semi-finished product and cannot be used directly as a battery. It only provides power and needs to be equipped with a protection circuit and a shell packaging to form a finished battery. When processing the battery cell, if a leak occurs in the battery cell after the battery cell cavity test is completed, a large amount of residual helium will be distributed in the cavity. Before the next set of tests, this residual helium needs to be removed by vacuuming. This vacuuming and exhausting of residual helium takes a long time, which affects the working efficiency of the whole machine. Utility Model Content

[0003] The main purpose of the utility model is to provide a helium-purifying blowing system, which can effectively solve the problems in the background technology.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] The helium purge blowing system comprises a workbench, a plurality of cavities are fixedly mounted on the lower surface of the workbench, and an avoidance groove is provided through the upper surface of the workbench and at each cavity position;

[0006] A suction hole is formed on one side of the lower surface of the inner wall of each cavity, a gas exhaust hole is formed on the other side of the lower surface of the inner wall of each cavity, and a suction component for extracting residual helium in the cavity is installed on one side of the upper surface of the cavity;

[0007] An exhaust component for exhausting nitrogen into the cavity is installed on the other side of the upper surface of the cavity.

[0008] Preferably, the exhaust assembly comprises a plurality of first exhaust pipes, each of which is fixedly mounted on one side of the upper surface of the corresponding cavity, and the lower end of each first exhaust pipe is connected to the corresponding exhaust hole;

[0009] A second exhaust pipe is fixedly mounted on one end of each of the first exhaust pipes via a first sealing joint, a first bent pipe is fixedly mounted on one end of each of the second exhaust pipes, and a vacuum pump is arranged on one end of the first bent pipe.

[0010] Preferably, the exhaust assembly includes a plurality of exhaust pipes, each of which is fixedly mounted on the other side of the corresponding upper surface of the cavity, and the lower end of each exhaust pipe is connected to the corresponding exhaust hole;

[0011] A nitrogen blowing valve is arranged on one side of each exhaust pipe body, and an output end of each nitrogen blowing valve is fixedly connected to the corresponding exhaust pipe body.

[0012] Preferably, a delivery pipe is fixedly installed at one end of each exhaust pipe via a second sealing joint, a second elbow is fixedly installed at one end of each delivery pipe, a connecting pipe is fixedly installed in the middle of the second elbow, a helium detector is provided at one end of the connecting pipe, and the input end of the helium detector is fixedly connected to the connecting pipe.

[0013] Preferably, a bearing platform is provided on one side of the workbench, and the helium detector is fixedly mounted on one side of the upper surface of the bearing platform.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] (1) When a leak occurs in the battery cell and the cavity is filled with helium, the staff first starts the exhaust component, which then discharges nitrogen into the cavity, diluting the helium in the cavity under the purge of nitrogen. Then the staff starts the vacuum component, which discharges the helium diluted by nitrogen out of the system, greatly reducing the time for clearing helium and thereby improving the working efficiency of the entire machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the helium cleaning and blowing system of the utility model;

[0017] Figure 2 It is a top view structural diagram of the helium cleaning and blowing system of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the helium cleaning and blowing system of the utility model when viewed from above;

[0019] Figure 4 The utility model is a helium cleaning blowing system Figure 2 Schematic diagram of the cross-section structure at AA in the middle;

[0020] Figure 5 The utility model is a helium cleaning blowing system Figure 3 Schematic diagram of the cross-sectional structure at BB in the middle.

[0021] In the figure: 1. workbench; 101. avoidance groove; 2. cavity; 201. exhaust hole; 202. exhaust hole; 3. exhaust assembly; 301. first exhaust pipe; 302. first sealing joint; 303. second exhaust pipe; 304. first elbow; 305. vacuum pump; 4. exhaust assembly; 401. exhaust pipe; 402. nitrogen valve; 5. second sealing joint; 501. delivery pipe; 502. second elbow; 503. connecting pipe; 504. helium detector; 6. supporting platform. DETAILED DESCRIPTION

[0022] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figure 1 , Figure 2 , Figure 3 As shown, the helium purge blowing system comprises a workbench 1 , a plurality of cavities 2 are fixedly mounted on the lower surface of the workbench 1 , and an avoidance groove 101 is provided through the upper surface of the workbench 1 and at the position of each cavity 2 .

[0024] An exhaust hole 201 is formed on one side of the lower inner wall surface of each cavity 2, an exhaust hole 202 is formed on the other side of the lower inner wall surface of each cavity 2, and an exhaust component 3 for extracting residual helium in the cavity 2 is installed on one side of the upper surface of the cavity 2.

[0025] An exhaust component 4 for discharging nitrogen into the cavity 2 is installed on the other side of the upper surface of the cavity 2. When a leak occurs in the battery cell and the cavity 2 is filled with helium, the staff first starts the exhaust component 4, which then discharges nitrogen into the cavity 2, so that the helium in the cavity 2 is diluted under the purge of nitrogen. Then the staff starts the exhaust component 3, which discharges the helium diluted by nitrogen out of the system, greatly reducing the time for clearing helium and improving the working efficiency of the whole machine.

[0026] like Figure 1 , Figure 3 , Figure 4 , Figure 5 As shown, in this embodiment, the exhaust assembly 3 includes a plurality of first exhaust pipes 301 , each of which is fixedly mounted on one side of the upper surface of the corresponding cavity 2 , and the lower end of each first exhaust pipe 301 is connected to the corresponding exhaust hole 201 .

[0027] A second exhaust pipe 303 is fixedly mounted on one end of each first exhaust pipe 301 through a first sealing joint 302 , a first elbow 304 is fixedly mounted on one end of each second exhaust pipe 303 , and a vacuum pump 305 is provided on one end of the first elbow 304 .

[0028] The exhaust assembly 4 includes a plurality of exhaust pipes 401 . Each exhaust pipe 401 is fixedly mounted on the other side of the upper surface of the corresponding cavity 2 . The lower end of each exhaust pipe 401 is connected to the corresponding exhaust hole 202 .

[0029] A nitrogen blowing valve 402 is provided on one side of each exhaust pipe 401, and the output end of each nitrogen blowing valve 402 is fixedly connected to the corresponding exhaust pipe 401. The staff connects the output end of the nitrogen machine to the nitrogen blowing valve 402, and then starts the nitrogen blowing valve 402, and the nitrogen enters the cavity 2 through the exhaust pipe 401 and the exhaust hole 202 and dilutes the helium in the cavity 2.

[0030] After the nitrogen dilutes the helium in the cavity 2 , the staff starts the vacuum pump 305 . Under the pressure of the vacuum pump 305 , the gas in the cavity 2 is discharged outside the cavity 2 through the exhaust hole 201 and the first bend pipe 304 .

[0031] like Figure 1 , Figure 5 As shown, it should be noted that a delivery pipe 501 is fixedly installed at one end of each exhaust pipe 401 through a second sealing joint 5, a second elbow 502 is fixedly installed at one end of each delivery pipe 501, a connecting pipe 503 is fixedly installed in the middle of the second elbow 502, a helium detector 504 is arranged at one end of the connecting pipe 503, and the input end of the helium detector 504 is fixedly connected to the connecting pipe 503. After the residual helium is exhausted, the staff starts the helium detector 504, and the helium detector 504 extracts the gas in the cavity 2 through the delivery pipe 501 and the exhaust pipe 401 to detect whether there is any residual helium, so as to avoid the situation where the helium still remains in the cavity 2 and affects the next batch of battery cells.

[0032] A bearing platform 6 is provided on one side of the workbench 1, and the helium detector 504 is fixedly mounted on one side of the upper surface of the bearing platform 6. By providing the bearing platform 6, the helium detector 504 is supported, the weight of the connecting tube 503 is greatly reduced, and the connecting tube 503 is prevented from breaking.

[0033] The working principle of the helium purge system:

[0034] During use, when a leak occurs in the battery cell and the cavity 2 is filled with helium, the staff connects the output end of the nitrogen machine to the nitrogen blowing valve 402, and then starts the nitrogen blowing valve 402. The nitrogen enters the cavity 2 through the exhaust pipe 401 and the exhaust hole 202 and dilutes the helium in the cavity 2. After the nitrogen dilutes the helium in the cavity 2, the staff starts the vacuum pump 305. Under the pressure of the vacuum pump 305, the gas in the cavity 2 is discharged to the outside of the cavity 2 through the exhaust hole 201 and the first bend pipe 304, which greatly reduces the time for clearing helium and improves the working efficiency of the whole machine.

[0035] The above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.

Claims

1. A helium purge system, comprising a workbench (1), characterized in that: A plurality of cavities (2) are fixedly mounted on the lower surface of the workbench (1), and an avoidance groove (101) is provided through the upper surface of the workbench (1) and at the position of each cavity (2); A suction hole (201) is provided through one side of the lower surface of the inner wall of each cavity (2), an exhaust hole (202) is provided through the other side of the lower surface of the inner wall of each cavity (2), and a suction component (3) for extracting residual helium in the cavity (2) is installed on one side of the upper surface of the cavity (2); An exhaust component (4) for exhausting nitrogen into the cavity (2) is installed on the other side of the upper surface of the cavity (2).

2. The helium purge system according to claim 1, characterized in that: The air extraction assembly (3) comprises a plurality of first air extraction pipes (301), each of the first air extraction pipes (301) being fixedly mounted on one side of the upper surface of the corresponding cavity (2), and the lower end of each of the first air extraction pipes (301) being connected to the corresponding air extraction hole (201); A second exhaust pipe (303) is fixedly mounted on one end of each of the first exhaust pipes (301) via a first sealing joint (302), a first bent pipe (304) is fixedly mounted on one end of each of the second exhaust pipes (303), and a vacuum pump (305) is provided at one end of the first bent pipe (304).

3. The helium purge system according to claim 1, characterized in that: The exhaust assembly (4) comprises a plurality of exhaust pipes (401), each of the exhaust pipes (401) being fixedly mounted on the other side of the upper surface of the corresponding cavity (2), and the lower end of each exhaust pipe (401) being connected to the corresponding exhaust hole (202); A nitrogen blowing valve (402) is provided on one side of the body of each exhaust pipe (401), and an output end of each nitrogen blowing valve (402) is fixedly connected to the body of the corresponding exhaust pipe (401).

4. The helium purge system according to claim 3, characterized in that: A delivery pipe (501) is fixedly mounted on one end of each exhaust pipe (401) via a second sealing joint (5); a second curved pipe (502) is fixedly mounted on one end of each delivery pipe (501); a connecting pipe (503) is fixedly mounted in the middle of the second curved pipe (502); a helium detector (504) is disposed at one end of the connecting pipe (503); and an input end of the helium detector (504) is fixedly connected to the connecting pipe (503).

5. The helium purge system according to claim 4, characterized in that: A bearing platform (6) is provided on one side of the workbench (1), and the helium detector (504) is fixedly mounted on one side of the upper surface of the bearing platform (6).

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