Helium detection device

Abstract

The utility model discloses a helium detection device, which includes a vacuum pumping component, a helium detection pipeline, a calling pipeline and a detector; when the vacuum pressure of the helium detection cavity exceeds the permitted working range of the helium detector, the helium detection control valve is closed, the calling control valve is opened, and the vacuum pump vacuumizes the helium detection cavity through the calling pipeline and the helium detection pipeline until the pressure of the helium detection cavity reaches the permitted working range of the helium detector, and then closes the calling control valve and opens the helium detection control valve, so that the helium detector can perform helium detection. Such an arrangement effectively avoids the phenomenon of waiting in line for vacuum pumping due to calling the vacuum pumping component, thereby improving the production capacity of the helium detection device.

Description

Technical Field

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

[0002] Helium testing of lithium batteries is to determine the sealing performance of lithium batteries by detecting whether there is gas leakage inside the lithium batteries. Most of the current helium testing equipment has the ability to perform helium testing on lithium batteries in large quantities, which means that there are multiple sealed cavities for accommodating lithium batteries. Before performing helium testing on lithium batteries, all sealed cavities need to be evacuated. After all sealed cavities are evacuated, all sealed cavities are queued for helium testing.

[0003] Due to factors such as assembly errors or structural damage, not all closed cavities have a stable cavity pressure. External air will infiltrate some closed cavities, resulting in unstable cavity pressure, that is, the vacuum degree in the closed cavity does not meet the requirements of helium inspection. During helium inspection, it is necessary to use the vacuum pumping mechanism to evacuate the closed cavity with unstable cavity pressure again. However, this will affect the helium inspection efficiency of the battery and the production capacity will not be improved. Utility Model Content

[0004] The utility model mainly provides a helium detection device to solve the problem of low efficiency of current battery helium detection.

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

[0006] The vacuum pump assembly includes a vacuum pump and a vacuum pipe, the vacuum pipe is connected to the vacuum pump and is also connected to the helium detection chamber, the helium detection pipeline is connected to the vacuum pipeline and is also connected or disconnected to the helium detection port of the detector;

[0007] The calling pipeline has a first port, a second port and a third port which are connected to each other, the first port is connected to the helium detection pipeline, the second port is connected to the suction port of the detector, and the third port is connected to the pneumatic part pipeline of the helium detection device. The detector has a helium detection state and a non-helium detection state. In the helium detection state, the detector is in a connected state with the helium detection pipeline, the calling pipeline and the helium detection pipeline are disconnected, and the detector is used to detect whether there is helium in the helium detection chamber; in the non-helium detection state, the detector is in a connected state with the calling pipeline, the calling pipeline and the helium detection pipeline are connected, and the pneumatic part vacuums the helium detection chamber through the calling pipeline and the helium detection pipeline.

[0008] In some embodiments of the present invention, the helium detection device further includes a helium detection control valve, the helium detection pipeline is connected to the helium detection port through the helium detection control valve, and the helium detection control valve is used to open or close the connection between the helium detection pipeline and the detector.

[0009] In some embodiments of the present invention, the helium detection device further includes a call control valve, the call pipeline is connected to the suction port through the call control valve, and the call control valve is used to open or close the connection between the call pipeline and the pneumatic part.

[0010] In some embodiments of the present invention, the call control valve is a one-way control valve, and the one-way control valve is used to limit the flow of gas from the call pipeline to the helium detection pipeline.

[0011] In some embodiments of the present invention, the pneumatic component is a vacuum pump.

[0012] In some embodiments of the present utility model, the calling pipeline includes an air extraction pipe body, a first connecting pipe body and a second connecting pipe body;

[0013] The first port is formed in the second connecting tube body, the second port is formed in the first connecting tube body, and the third port is formed in the exhaust tube body. The exhaust tube body has a first interface and a second interface that are interconnected. The first connecting tube body is connected to the suction port through the second port, and the other end is connected to the first interface. The first valve port of the calling control valve is connected to the second interface. The second connecting tube body is connected to the helium detection pipeline through the first port, and the other end is connected to the second valve port of the calling control valve. The exhaust tube body is connected to the pneumatic part through the third port.

[0014] In some embodiments of the present invention, the helium detection pipeline includes a helium detection collecting pipe and multiple helium detection branch pipes, one end of the helium detection collecting pipe is connected to the helium detection control valve, and the multiple helium detection branch pipes are all connected to the helium detection collecting pipe.

[0015] In some embodiments of the utility model, the vacuum pipe includes a vacuum collecting pipe and a plurality of vacuum branch pipes, the vacuum collecting pipe is connected to the vacuum pump, the plurality of vacuum branch pipes are connected to the vacuum collecting pipe, and the plurality of helium detection branch pipes are connected to the plurality of vacuum branch pipes in a one-to-one correspondence.

[0016] In some embodiments of the present invention, the helium detection device further comprises a helium injection component, and the helium injection component is used to inject helium into the battery.

[0017] In some embodiments of the present invention, the detector is a helium detector.

[0018] The beneficial effect of the utility model is that, different from the prior art, the helium detection device disclosed in the utility model evacuates the helium detection chamber by calling the pipeline and the helium detection pipeline, so there is no need to call the vacuum extraction component to evacuate the helium detection chamber, so that the pressure in the helium detection chamber meets the requirements of the helium detection. Such an arrangement can greatly reduce the time for other helium detection chambers to queue for vacuum extraction, thereby greatly improving the efficiency of battery helium detection and increasing production capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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.

[0020] Figure 1 It is a structural schematic diagram of an embodiment of the pipeline part of the helium detection device of the utility model;

[0021] Figure 2 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;

[0022] Figure 3 This is a schematic diagram of the structure of an embodiment of the detector of the utility model;

[0023] Figure 4 The utility model is a schematic diagram of the explosion structure of a calling pipeline embodiment.

[0024] Description of Figure Numbers:

[0025] 1. Helium detection pipeline; 11. Helium detection collection pipe; 12. Helium detection branch pipe; 2. Calling pipeline; 21. Air extraction pipe body; 211. First interface; 212. Second interface; 22. First connecting pipe body; 23. Second connecting pipe body; 3. Detector; 31. Suction port; 32. Helium detection port; 4. Helium detection control valve; 5. Calling control valve; 51. First valve port; 52. Second valve port.

[0026] 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

[0027] 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.

[0028] 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.

[0029] 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.

[0030] The utility model proposes a helium detection device, referring to Figure 1 The helium detection device includes a vacuum assembly, a helium detection pipeline 1, a call pipeline 2, and a detector 3. The vacuum assembly includes a vacuum pump and a vacuum pipe, the vacuum pipe is connected to the vacuum pump and is also connected to the helium detection cavity, the helium detection pipeline 1 is connected to the vacuum pipe, and is also connected or disconnected to the helium detection port 32 of the detector 3.

[0031] The calling pipeline 2 has a first port, a second port and a third port which are connected to each other. The first port is connected to the helium detection pipeline 1, the second port is connected to the suction port 31 of the detector 3, and the third port is connected to the pneumatic part pipeline of the helium detection device. The detector 3 has a helium detection state and a non-helium detection state. In the helium detection state, the detector 3 is in a connected state with the helium detection pipeline 1, the calling pipeline 2 and the helium detection pipeline 1 are disconnected, and the detector 3 is used to detect whether there is helium in the helium detection cavity; in the non-helium detection state, the detector 3 is in a connected state with the calling pipeline 2, the calling pipeline 2 and the helium detection pipeline 1 are connected, and the pneumatic part vacuums the helium detection cavity through the calling pipeline 2 and the helium detection pipeline 1.

[0032] Based on the above scheme, when the pressure in the helium inspection chamber fails to meet the air pressure requirement during helium inspection, the helium detector disconnects from the helium inspection pipeline 1, calls pipeline 2 to connect with the helium inspection pipeline 1, and the helium detector works, and evacuates the helium inspection chamber by calling pipeline 2 and helium inspection pipeline 1. This can avoid calling the vacuum pumping component to evacuate the helium inspection chamber, and can make the pressure in the helium inspection chamber meet the helium inspection requirement, thereby effectively reducing the time for other helium inspection chambers to queue for vacuum pumping, so that the helium inspection chamber can be quickly vacuumed for the second time, thereby improving the efficiency of helium inspection of batteries and improving production capacity.

[0033] That is, when the vacuum pressure of the helium detection chamber exceeds the permitted working range of the helium detector, the helium detection control valve 4 is closed, the call control valve 5 is opened, and the vacuum pump evacuates the helium detection chamber through the call pipe 2 and the helium detection pipe 1 until the pressure of the helium detection chamber reaches the permitted working range of the helium detector, and then the call control valve 5 is closed and the helium detection control valve 4 is opened, so that the helium detector can perform helium detection. This arrangement effectively avoids the phenomenon of waiting in line for vacuuming due to calling the vacuuming component, thereby improving the production capacity of the helium detection device.

[0034] The first opening, the second opening and the third opening are not shown in the drawings. The detector 3 can be a helium detector or other electronic device with helium detection function, which is not specifically limited here.

[0035] The helium detection device also includes a helium injection assembly (not shown in the figure), which is used to inject helium into the battery. The helium injection assembly may include a helium injection pipeline and an air pump, the helium injection pipeline is connected to the helium detection cavity, the helium injection pipeline can be connected to the inside of the battery, and the inside of the battery is vacuumed, and helium is injected into the battery to detect whether there are defects in the battery packaging.

[0036] During the helium inspection of the battery, the vacuum pump works and evacuates the helium inspection chamber through the vacuum tube. At the same time, the air pump evacuates the inside of the battery through the helium injection pipeline to ensure that the battery is in a vacuum state, providing a vacuum environment for the helium inspection battery.

[0037] Reference Figures 1 to 4 The helium detection device also includes a helium detection control valve 4, through which the helium detection pipeline 1 is connected to the helium detection port 32, and the helium detection control valve 4 is used to open or close the connection between the helium detection pipeline 1 and the detector 3.

[0038] The helium detection control valve 4 can control the connection or disconnection between the helium detection pipeline 1 and the detector 3, so that the detector 3 can call the pipeline 2 to evacuate the air, thereby eliminating the need to call a vacuum pump and effectively improving the helium detection efficiency of the battery.

[0039] In addition, the helium leaked in the helium detection chamber can be sucked out by calling the pipeline 2 and the helium detection pipeline 1 to eliminate the residual helium in the helium detection chamber.

[0040] Specifically, one valve port of the helium detection control valve 4 is connected to the helium detection port 32 through a pipe clamp, and the other valve port is also connected to the helium detection pipeline 1 through a pipe clamp to ensure that the detector 3 and the helium detection pipeline 1 are firmly connected. The helium detection control valve 4 can be a solenoid valve or other valve body with a control function, which is not specifically limited here.

[0041] Reference Figures 1 to 4 The helium detection device further includes a call control valve 5, through which the call pipeline 2 is connected to the suction port 31, and the call control valve 5 is used to open or close the connection between the call pipeline 2 and the pneumatic part.

[0042] When the vacuum pressure of the helium detection chamber exceeds the permitted working range of the helium detector, the helium detection control valve 4 is closed, the call control valve 5 is opened, and the vacuum pump evacuates the helium detection chamber through the call pipe 2 and the helium detection pipe 1 until the pressure of the helium detection chamber reaches the permitted working range of the helium detector, and then the call control valve 5 is closed and the helium detection control valve 4 is opened, so that the helium detector can perform helium detection. This arrangement effectively avoids the phenomenon of waiting in line for vacuuming due to calling the vacuum pumping component, thereby improving the production capacity of the helium detection device.

[0043] The call control valve 5 can be a solenoid valve or other valve body with a control function, which is not specifically limited here.

[0044] The call control valve 5 is a one-way control valve, which is used to limit the flow of gas from the call pipe 2 to the helium detection pipe 1. This arrangement can reliably evacuate the helium detection chamber, effectively avoid gas backflow, and improve the vacuuming effect of the helium detection chamber.

[0045] In addition, when the detector 3 draws the residual helium in the helium detection chamber by calling the pipeline 2 and the helium detection pipeline 1, the helium backflow can be effectively avoided through the one-way control valve, so that the residual helium in the helium detection chamber can be better eliminated to provide a helium detection environment for subsequent battery sealing detection.

[0046] The pneumatic part is a vacuum pump (not shown in the figure), which is connected to the third port of the calling pipeline 2. In the non-helium detection state, the vacuum pump is used to evacuate the helium detection chamber through the calling pipeline 2 and the helium detection pipeline 1. In this way, under the action of the vacuum pump, there is no need to call the vacuum pumping component to evacuate the helium detection chamber, which not only saves power costs, but also greatly improves the vacuum pumping efficiency of the helium detection chamber, so as to improve the production efficiency of battery helium detection.

[0047] Continue to refer to Figures 1 to 4The calling pipeline 2 includes an exhaust pipe body 21, a first connecting pipe body 22, and a second connecting pipe body 23. The first port is formed in the second connecting pipe body, the second port is formed in the first connecting pipe body 22, and the third port is formed in the exhaust pipe body 21. The exhaust pipe body 21 has a first interface 211 and a second interface 212 that are arranged in communication with each other. The first connecting pipe body 22 is connected to the suction port 31 through the second port, and the other end is connected to the first interface 211. The first valve port 51 of the calling control valve 5 is connected to the second interface 212. The second connecting pipe body 23 is connected to the helium detection pipeline 1 through the first port, and the other end is connected to the second valve port 52 of the calling control valve 5. The exhaust pipe body 21 is connected to the pneumatic part through the third port.

[0048] With such arrangement, the flexibility of on-site installation and arrangement of the calling pipeline 2 can be increased through the exhaust pipe body 21, the first connecting pipe body 22 and the second connecting pipe body 23, thereby improving the convenience of installation.

[0049] The helium detection pipeline 1 includes a helium detection collecting pipe 11 and a plurality of helium detection branch pipes 12 . One end of the helium detection collecting pipe 11 is connected to the helium detection control valve 4 , and the plurality of helium detection branch pipes 12 are all connected to the helium detection collecting pipe 11 .

[0050] The vacuum pipe includes a vacuum collecting pipe and a plurality of vacuum branch pipes. The vacuum collecting pipe is connected to a vacuum pump. The plurality of vacuum branch pipes are connected to the vacuum collecting pipe. The plurality of helium detection branch pipes 12 are connected to the plurality of vacuum branch pipes in a one-to-one correspondence.

[0051] With such arrangement, when the vacuum tube does not evacuate the helium inspection chamber, the helium inspection chamber is evacuated through the branch pipe corresponding to the helium inspection chamber that needs to be evacuated and the helium inspection collecting pipe 11. In this way, the helium inspection chamber can be evacuated without a vacuum pump, which is simple and efficient, thereby improving the efficiency of battery helium inspection.

[0052] 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 having a helium detection chamber for accommodating a battery, characterized in that: The helium detection device includes a vacuum assembly, a helium detection pipeline, a call pipeline and a detector; wherein, The vacuum pump assembly includes a vacuum pump and a vacuum pipe, the vacuum pipe is connected to the vacuum pump and is also connected to the helium detection chamber, the helium detection pipeline is connected to the vacuum pipeline and is also connected or disconnected to the helium detection port of the detector; The calling pipeline has a first port, a second port and a third port which are connected to each other, the first port is connected to the helium detection pipeline, the second port is connected to the suction port of the detector, and the third port is connected to the pneumatic part pipeline of the helium detection device. The detector has a helium detection state and a non-helium detection state. In the helium detection state, the detector is in a connected state with the helium detection pipeline, the calling pipeline and the helium detection pipeline are disconnected, and the detector is used to detect whether there is helium in the helium detection chamber; in the non-helium detection state, the detector is in a connected state with the calling pipeline, the calling pipeline and the helium detection pipeline are connected, and the pneumatic part vacuums the helium detection chamber through the calling pipeline and the helium detection pipeline.

2. The helium detection device according to claim 1, characterized in that: The helium detection device further comprises a helium detection control valve, through which the helium detection pipeline is connected to the helium detection port, and the helium detection control valve is used to open or close the connection between the helium detection pipeline and the detector.

3. The helium detection device according to claim 1, characterized in that: The helium detection device further comprises a call control valve, and the call control valve is used to open or close the connection between the call pipeline and the pneumatic part.

4. The helium detection device according to claim 3, characterized in that: The call control valve is a one-way control valve, and the one-way control valve is used to limit the flow of gas from the call pipeline to the helium detection pipeline.

5. The helium detection device according to claim 3, characterized in that: The pneumatic part is a vacuum pump.

6. The helium detection device according to claim 3, characterized in that: The calling pipeline includes an air extraction pipe body, a first connecting pipe body and a second connecting pipe body; The first port is formed in the second connecting tube body, the second port is formed in the first connecting tube body, and the third port is formed in the exhaust tube body. The exhaust tube body has a first interface and a second interface that are interconnected. The first connecting tube body is connected to the suction port through the second port, and the other end is connected to the first interface. The first valve port of the calling control valve is connected to the second interface. The second connecting tube body is connected to the helium detection pipeline through the first port, and the other end is connected to the second valve port of the calling control valve. The exhaust tube body is connected to the pneumatic part through the third port.

7. The helium detection device according to claim 2, characterized in that: The helium detection pipeline comprises a helium detection collecting pipe and a plurality of helium detection branch pipes. One end of the helium detection collecting pipe is connected to the helium detection control valve, and the plurality of helium detection branch pipes are all connected to the helium detection collecting pipe.

8. The helium detection device according to claim 7, characterized in that: The vacuum pipe includes a vacuum collecting pipe and a plurality of vacuum branch pipes. The vacuum collecting pipe is connected to the vacuum pump. The plurality of vacuum branch pipes are connected to the vacuum collecting pipe. The plurality of helium detection branch pipes are connected to the plurality of vacuum branch pipes in a one-to-one correspondence.

9. The helium detection device according to claim 1, characterized in that: The helium detection device further comprises a helium injection component, and the helium injection component is used to inject helium into the battery.

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

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