Helium detection device

Abstract

The utility model discloses a helium detection device, which includes: a frame; a vacuum pipeline module, including a first vacuum pipeline, a second vacuum pipeline and a plurality of vacuum main pipes, the first vacuum pipeline and the second vacuum pipeline are mounted on a mounting platform, and are spaced apart along the width direction of the mounting platform, and the first vacuum pipeline and the second vacuum pipeline have the same height relative to the mounting platform in the vertical direction; a nitrogen pipeline module, including a nitrogen inlet pipeline, a nitrogen outlet pipeline and a plurality of nitrogen branch pipes, the plurality of nitrogen branch pipes are all mounted on the mounting platform, and are arranged one by one with the plurality of vacuum main pipes, the nitrogen inlet pipeline and the nitrogen outlet pipeline are both arranged on one side of the mounting platform; the detector is connected to each vacuum main pipe through the helium detection pipeline. Through the above arrangement, the problem of the complex pipeline arrangement of the current battery helium detection equipment leading to the inconvenience of subsequent pipeline maintenance is solved.

Description

Technical Field

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

[0002] Lithium battery helium testing is to determine the sealing performance of lithium batteries by detecting whether there is gas leakage inside the lithium battery. During the testing process, helium will be used to replace air. If there is a leak inside the lithium battery, helium will leak out from the leaking location. The leaking location can be detected by the testing instrument to determine whether the lithium battery has good sealing.

[0003] Most of the current battery helium inspection equipment can realize large-scale helium inspection of batteries, which requires the layout of multiple pipelines to perform operations such as evacuating, injecting helium, and restoring vacuum in each battery helium inspection chamber. However, the current automated battery helium inspection equipment has a complex pipeline layout, which brings certain difficulties to the subsequent pipeline maintenance. Utility Model Content

[0004] The utility model mainly provides a helium detection device to solve the problem that the pipeline arrangement of the current battery helium detection equipment is complicated and causes inconvenience in subsequent pipeline maintenance.

[0005] To achieve the above-mentioned purpose, the utility model proposes a helium detection device, which includes a frame, a vacuum pipeline module, a nitrogen pipeline module and a detector; wherein:

[0006] The rack has a plurality of helium inspection stations, the plurality of helium inspection stations are arranged in a linear distribution, and the rack also has a mounting platform spanning the plurality of helium inspection stations;

[0007] The vacuum pipeline module comprises an air source assembly, a first vacuum pipeline, a second vacuum pipeline and a plurality of vacuum main pipes, wherein the plurality of vacuum main pipes are all installed on the installation platform and are spaced apart along the length direction of the installation platform, and every two of the plurality of vacuum main pipes are located at corresponding helium inspection stations;

[0008] The first vacuum pipeline and the second vacuum pipeline are both connected to the gas circuit of the gas source assembly, the first vacuum pipeline and the second vacuum pipeline are erected on the installation platform and spaced apart along the width direction of the installation platform, the first vacuum pipeline and the second vacuum pipeline are also extended along the length direction of the installation platform, the first vacuum pipeline and the second vacuum pipeline are at the same height relative to the installation platform in the vertical direction, the first vacuum pipeline is connected to a part of the plurality of vacuum main pipelines, and the second vacuum pipeline is connected to another part of the plurality of vacuum main pipelines;

[0009] The nitrogen pipeline module includes a nitrogen inlet pipeline, a nitrogen exhaust pipeline and a plurality of nitrogen branch pipes. The plurality of nitrogen branch pipes are installed on the installation platform and are arranged one by one corresponding to the plurality of vacuum main pipes. The nitrogen inlet pipeline and the nitrogen exhaust pipeline are both arranged on one side of the installation platform. The nitrogen inlet pipeline can be connected to the vacuum main pipeline, and the plurality of nitrogen branch pipes are connected to the nitrogen exhaust pipeline.

[0010] The detector is connected to each vacuum main pipeline through a helium detection pipeline.

[0011] In some embodiments of the present invention, the lengths of the plurality of vacuum main pipes are all equal.

[0012] In some embodiments of the present invention, the lengths of the plurality of nitrogen branch pipes are all equal.

[0013] In some embodiments of the present invention, in the vertical direction, the height of the vacuum main pipe is higher than the height of the nitrogen branch pipe.

[0014] In some embodiments of the present invention, the first vacuum pumping pipeline has a plurality of first connecting pipes, and the plurality of first connecting pipes are connected to a part of the plurality of vacuum main pipes in a one-to-one manner through a first solenoid valve; the second vacuum pumping pipeline has a plurality of second connecting pipes, and the plurality of second connecting pipes are connected to another part of the plurality of vacuum main pipes in a one-to-one manner through a second solenoid valve.

[0015] In some embodiments of the utility model, the helium detection pipeline is arranged on one side of the installation platform and is arranged opposite to the nitrogen inlet pipeline and the nitrogen exhaust pipeline. The helium detection pipeline, the nitrogen inlet pipeline and the nitrogen exhaust pipeline are all arranged below the first vacuum pipeline.

[0016] In some embodiments of the present invention, the helium detection pipeline has a plurality of helium detection joints, and the plurality of helium detection joints are connected to corresponding vacuum main pipelines through a third solenoid valve.

[0017] In some embodiments of the present invention, the vacuum pipe module further includes a parallel pipe, one end of which is connected to the first vacuum pipe, and the other end of which is connected to the second vacuum pipe.

[0018] In some embodiments of the present invention, the mounting platform has a first supporting portion, a second supporting portion and a third supporting portion, the first supporting portion is used to support the first vacuum pumping pipeline, the second supporting portion is used to support the second vacuum pumping pipeline, and the third supporting portion is used to support the helium detection pipeline.

[0019] In some embodiments of the present invention, the detector is a helium mass spectrometer.

[0020] The beneficial effect of the utility model is as follows: different from the prior art, the helium detection device disclosed by the utility model arranges the first vacuum pipeline and the second vacuum pipeline on both sides of the installation platform respectively, and the vacuum main pipeline is arranged between the first vacuum pipeline and the second vacuum pipeline, and the first vacuum pipeline and the second vacuum pipeline have the same height. With such arrangement, the overall layout of the pipeline is simple, so that the pipelines can be placed neatly and orderly, which is very convenient for subsequent pipeline maintenance, and effectively avoids the problem of difficulty in subsequent pipeline maintenance caused by large height differences between the pipelines, which is very conducive to repairing or checking the operating conditions of the pipelines and the detection instruments; in addition, by constraining the height difference between the pipelines, the space occupied by the pipelines can be reduced, the layout length of the pipelines can be effectively controlled, and the excessive length of the pipelines can be effectively avoided within a certain range, thereby effectively reducing the layout cost of the pipelines. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0022] Figure 1 It is a structural schematic diagram of an embodiment of the pipeline part of the helium detection device of the utility model;

[0023] Figure 2 It is a front view structural schematic diagram of an embodiment of the pipeline part of the helium detection device of the utility model;

[0024] Figure 3 It is a schematic diagram of the top view of the pipeline part of an embodiment of the helium detection device of the utility model;

[0025] Figure 4 The figure is a schematic diagram of the explosion structure of a pipeline part in an embodiment of the helium detection device of the utility model.

[0026] Description of Figure Numbers:

[0027] 1. Rack; 11. Helium inspection station; 12. Installation platform; 121. First support part; 122. Second support part; 123. Third support part; 2. Vacuum pipe module; 21. First vacuum pipe; 211. First connecting pipe; 22. Second vacuum pipe; 221. Second connecting pipe; 23. Vacuum main pipe; 24. First solenoid valve; 25. Second solenoid valve; 26. Parallel pipe; 3. Nitrogen pipe module; 31. Nitrogen inlet pipe; 32. Nitrogen exhaust pipe; 33. Nitrogen branch pipe; 4. Detector; 5. Helium inspection pipe; 51. Helium inspection connector; 52. Third solenoid valve.

[0028] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in 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.

[0030] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In addition, in the present utility model, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0032] The utility model proposes a helium detection device, referring to Figures 1 to 4The helium detection device includes a frame 1, a vacuum pipeline module 2, a helium detection pipeline module 3 and a detector 4. The frame 1 has a plurality of helium detection stations 11, and the plurality of helium detection stations 11 are linearly distributed. The frame 1 also has a mounting platform 12 spanning the plurality of helium detection stations 11. The gas source component, the first vacuum pipeline 21, the second vacuum pipeline 22 and the plurality of vacuum main pipes 23

[0033] The vacuum pipe module 2 includes: a plurality of vacuum main pipes 23 are all installed on the installation platform 12 and are spaced apart along the length direction of the installation platform 12, and every two of the plurality of vacuum main pipes 23 are located on the corresponding helium inspection station 11. The first vacuum pipe 21 and the second vacuum pipe 22 are both connected to the gas path of the gas source assembly, the first vacuum pipe 21 and the second vacuum pipe 22 are erected on the installation platform 12 and are spaced apart along the width direction of the installation platform 12, the first vacuum pipe 21 and the second vacuum pipe 22 are also extended along the length direction of the installation platform 12, the first vacuum pipe 21 and the second vacuum pipe 22 are at the same height relative to the installation platform 12 in the vertical direction, the first vacuum pipe 21 is connected to a part of the plurality of vacuum main pipes 23, and the second vacuum pipe 22 is connected to another part of the plurality of vacuum main pipes 23.

[0034] The nitrogen pipeline module 3 includes a nitrogen inlet pipeline 31, a nitrogen exhaust pipeline 32, and a plurality of nitrogen branch pipes 33. The plurality of nitrogen branch pipes 33 are all installed on the installation platform 12 and are arranged one by one with the plurality of vacuum main pipes 23. The nitrogen inlet pipeline 31 and the nitrogen exhaust pipeline 32 are both arranged on one side of the installation platform 12. The nitrogen inlet pipeline 31 can be connected to the vacuum main pipe 23 pipeline, and the plurality of nitrogen branch pipes 33 are connected to the nitrogen exhaust pipeline 32. The detector 4 is connected to each vacuum main pipe 23 pipeline through the helium detection pipeline 5.

[0035] Based on the above scheme, the first vacuum pipe 21 and the second vacuum pipe 22 are respectively arranged on both sides of the installation platform 12, and the vacuum main pipe 23 is arranged between the first vacuum pipe 21 and the second vacuum pipe 22, and the first vacuum pipe 21 and the second vacuum pipe 22 have the same height. With this arrangement, the overall layout of the pipeline is simple, so that the pipelines can be placed neatly and orderly, which is very convenient for subsequent pipeline maintenance and effectively avoids the problem of difficulty in subsequent pipeline maintenance caused by large height differences between the pipelines. This is very conducive to repairing and inspecting the operating conditions of each pipeline, detector 4 and control valve.

[0036] In addition, by constraining the height difference between each pipeline, the space occupied by the pipeline can be reduced, the layout length of the pipeline can be effectively controlled, and the pipeline length can be effectively avoided from being too long within a certain range, thereby effectively reducing the layout cost of the pipeline.

[0037] It should be noted that the battery jig has a chamber for placing batteries, and the battery jig is placed under the mounting platform 12. The battery jig and the mounting platform 12 cooperate to seal the chamber of the battery jig to form a closed helium inspection chamber, and the vacuum main pipe 23 is connected to the helium inspection chamber.

[0038] The gas source assembly may include two vacuum pumps, one of which is connected to the first vacuum pipeline 21 , and the other is connected to the second vacuum pipeline 22 .

[0039] The detector 4 is a helium mass spectrometer, and the detector 4 may also be other electronic devices with a helium detection function.

[0040] When the battery is subjected to secondary helium inspection, all helium inspection chambers are simultaneously evacuated, two vacuum pumps are operated, and all helium inspection chambers are evacuated through the first vacuum pipe 21 and the second vacuum pipe 22. After the vacuum is completed, the detector 4 performs helium inspection on the battery. If the battery packaging is defective, helium will leak from the inside of the battery into the helium inspection chamber, and the detector 4 detects helium, and the battery is determined to be a bad battery; if there is no helium in the helium inspection chamber, the detector 4 cannot detect helium, and the battery is determined to be a qualified battery.

[0041] After completing the secondary helium inspection of the battery, the helium inspection chamber needs to be cleaned in time. The nitrogen inlet pipe 31 is connected to the vacuum main pipe 23 through a solenoid valve, and each nitrogen branch pipe 33 is connected to the nitrogen exhaust pipe 32 through a control valve or a solenoid valve. The nitrogen pipeline module 3 also includes an air pump, which is used to pump nitrogen into the nitrogen inlet pipe 31. When working, the nitrogen is sent into the helium inspection chamber through the nitrogen inlet pipe 32 to clean the helium or residual helium, and then the nitrogen is discharged from the helium inspection chamber through the nitrogen exhaust pipe 32 to complete the cleaning of the helium inspection chamber. In this way, a helium inspection environment can be provided for the subsequent secondary helium inspection of the battery, thereby greatly improving the production reliability and efficiency of the helium inspection device.

[0042] Reference Figures 1 to 4 The lengths of the plurality of vacuum main pipes 23 are all equal. This arrangement can ensure that all the vacuum main pipes 23 are installed at the same height on the installation platform 12, which not only ensures that all the vacuum main pipes 23 are uniformly distributed, but also facilitates the installation of the first vacuum pipe 21 and the second vacuum pipe 22, so that the installation heights of the first vacuum pipe 21 and the second vacuum pipe 22 are the same, which greatly reduces the cost of arranging the materials for the vacuum pipes.

[0043] The lengths of the multiple nitrogen branch pipes 33 are all equal. This arrangement can ensure that all the nitrogen branch pipes 33 are installed at the same height on the installation platform 12, which not only ensures that all the nitrogen branch pipes 33 are uniformly distributed, but also facilitates the arrangement of the nitrogen inlet pipe 31 and the nitrogen exhaust pipe 32, effectively reducing the layout cost of the nitrogen inlet pipe 31 and the nitrogen exhaust pipe 32.

[0044] In the vertical direction, the height of the vacuum main pipe 23 is higher than the height of the nitrogen branch pipe 33. This arrangement allows the vacuum main pipe 23 and the nitrogen branch pipe 33 to be staggered, and also allows the first vacuum pipe 21, the nitrogen inlet pipe 31, and the nitrogen exhaust pipe 32 to be arranged in layers and placed reasonably and orderly, so as to reasonably utilize space, save space occupation, and well reduce the cost of arranging the vacuum pipe materials.

[0045] Continue to refer to Figures 1 to 4 The first vacuum pipeline 21 has a plurality of first connecting pipes 211, which are connected to a portion of the plurality of vacuum main pipes 23 in a one-to-one manner through a first solenoid valve 24. The second vacuum pipeline 22 has a plurality of second connecting pipes 221, which are connected to another portion of the plurality of vacuum main pipes 23 in a one-to-one manner through a second solenoid valve 25.

[0046] Such arrangement enables installation on both sides of the vacuum main pipe 23 , so that the first vacuum pipe 21 and the second vacuum pipe 22 can be staggeredly connected to the vacuum pipe, which is convenient for installation and subsequent maintenance.

[0047] The vacuum pipeline module 2 further includes a parallel pipeline 26, one end of which is connected to the first vacuum pipeline 21, and the other end of which is connected to the second vacuum pipeline 22. During the vacuuming process, if one of the vacuum pumps fails to work, the first vacuum pipeline 21 and the second vacuum pipeline 22 can be connected to a vacuum pump through the parallel pipeline 26 to continue vacuuming, so as to ensure the production cycle, thereby improving the production reliability of the helium detection device.

[0048] It can be understood that the parallel pipeline 26 is connected to the first vacuum pipeline 21 and the second vacuum pipeline 22 through an airflow control valve, so that when one of the two vacuum pumps fails to work, the airflow control valve connected to the first vacuum pipeline 21 or the second vacuum pipeline 22 is opened to achieve the parallel connection of the first vacuum pipeline 21 and the second vacuum pipeline 22.

[0049] Continue to refer to Figures 1 to 4The helium detection pipeline 5 is arranged on one side of the installation platform 12 and is arranged opposite to the nitrogen inlet pipeline 31 and the nitrogen exhaust pipeline 32. The helium detection pipeline 5, the nitrogen inlet pipeline 31 and the nitrogen exhaust pipeline 32 are all arranged below the first vacuum pipeline 21.

[0050] In this arrangement, the first vacuum pumping pipeline 21 and the second vacuum pumping pipeline 22 are arranged on the upper layer, and the helium detection pipeline 5, the nitrogen inlet pipeline 31 and the nitrogen exhaust pipeline 32 are arranged on the lower layer. This can more conveniently maintain and repair the pipelines, reduce unnecessary operations and maintenance time, and greatly improve the efficiency of subsequent maintenance.

[0051] The helium detection pipeline 5 has a plurality of helium detection joints 51, and the plurality of helium detection joints 51 are connected to the corresponding vacuum main pipe 23 through the third electromagnetic valve 52. In this way, the helium detection chamber can be evacuated through the vacuum main pipe 23, and the vacuum main pipe 23 can also monitor whether there is helium in the helium detection chamber, which greatly saves pipeline layout and reduces the space occupied by the pipeline, thus greatly improving the performance of the helium detection device.

[0052] It is understandable that when the helium detection chamber is evacuated, all the third solenoid valves 52 are in a closed state. After the evacuation is completed, all the third solenoid valves 52 are opened, so that the detector 4 can detect in real time whether there is helium leakage in the helium detection chamber.

[0053] The mounting platform 12 has a first supporting portion 121 , a second supporting portion 122 and a third supporting portion 123 . The first supporting portion 121 is used to support the first vacuum pipe 21 , the second supporting portion 122 is used to support the second vacuum pipe 22 , and the third supporting portion 123 is used to support the helium detection pipe 5 .

[0054] The first support portion 121, the second support portion 122 and the third support portion 123 are used to stably support the first vacuum pipe 21, the second vacuum pipe 22 and the helium detection pipe 5, thereby improving the structural stability of the first vacuum pipe 21, the second vacuum pipe 22 and the helium detection pipe 5, which helps to improve the helium detection effect of the helium detection device on the battery.

[0055] The above description is only an optional embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A helium detection device, characterized in that: The helium detection device includes a frame, a vacuum pipeline module, a nitrogen pipeline module and a detector; wherein, The rack has a plurality of helium inspection stations, the plurality of helium inspection stations are arranged in a linear distribution, and the rack also has a mounting platform spanning the plurality of helium inspection stations; The vacuum pipeline module comprises an air source assembly, a first vacuum pipeline, a second vacuum pipeline and a plurality of vacuum main pipes, wherein the plurality of vacuum main pipes are all installed on the installation platform and are spaced apart along the length direction of the installation platform, and every two of the plurality of vacuum main pipes are located at corresponding helium inspection stations; The first vacuum pipeline and the second vacuum pipeline are both connected to the gas circuit of the gas source assembly, the first vacuum pipeline and the second vacuum pipeline are erected on the installation platform and spaced apart along the width direction of the installation platform, the first vacuum pipeline and the second vacuum pipeline are also extended along the length direction of the installation platform, the first vacuum pipeline and the second vacuum pipeline are at the same height relative to the installation platform in the vertical direction, the first vacuum pipeline is connected to a part of the plurality of vacuum main pipelines, and the second vacuum pipeline is connected to another part of the plurality of vacuum main pipelines; The nitrogen pipeline module includes a nitrogen inlet pipeline, a nitrogen exhaust pipeline and a plurality of nitrogen branch pipes, the plurality of nitrogen branch pipes are all installed on the installation platform and are arranged one by one corresponding to the plurality of vacuum main pipes, the nitrogen inlet pipeline and the nitrogen exhaust pipeline are both arranged on one side of the installation platform, the nitrogen inlet pipeline can be communicated with the vacuum main pipeline, and the plurality of nitrogen branch pipes are all connected to the nitrogen exhaust pipeline; The detector is connected to each vacuum main pipeline through a helium detection pipeline.

2. The helium detection device according to claim 1, characterized in that: The lengths of the plurality of vacuum main pipes are all equal.

3. The helium detection device according to claim 1, characterized in that: The lengths of the multiple nitrogen branch pipes are all equal.

4. The helium detection device according to claim 1, characterized in that: In the vertical direction, the height of the vacuum main pipe is higher than the height of the nitrogen branch pipe.

5. The helium detection device according to claim 1, characterized in that: The first vacuum pumping pipeline has a plurality of first connecting pipes, and the plurality of first connecting pipes are connected to a part of the plurality of vacuum main pipes in a one-to-one manner through a first solenoid valve; the second vacuum pumping pipeline has a plurality of second connecting pipes, and the plurality of second connecting pipes are connected to another part of the plurality of vacuum main pipes in a one-to-one manner through a second solenoid valve.

6. The helium detection device according to claim 1, characterized in that: The helium detection pipeline is arranged on one side of the installation platform and is arranged opposite to the nitrogen inlet pipeline and the nitrogen exhaust pipeline. The helium detection pipeline, the nitrogen inlet pipeline and the nitrogen exhaust pipeline are all arranged below the first vacuum pipeline.

7. The helium detection device according to claim 6, characterized in that: The helium detection pipeline has a plurality of helium detection joints, and the plurality of helium detection joints are connected to corresponding vacuum main pipelines through a third solenoid valve.

8. The helium detection device according to claim 1, characterized in that: The vacuum pipe module further includes a parallel pipe, one end of which is connected to the first vacuum pipe, and the other end of which is connected to the second vacuum pipe.

9. The helium detection device according to claim 1, characterized in that: The mounting platform comprises a first supporting portion, a second supporting portion and a third supporting portion, wherein the first supporting portion is used to support the first vacuum pumping pipeline, the second supporting portion is used to support the second vacuum pumping pipeline, and the third supporting portion is used to support the helium detection pipeline.

10. The helium detection device according to claim 1, characterized in that: The detector is a helium mass spectrometer.

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