Inflation leak detection device for large cylindrical battery

Abstract

The utility model discloses a large cylindrical battery inflation leak hunting device, and belongs to the technical field of battery production devices. Comprising a base, the base is provided with a container cavity used for containing liquid, a fixing frame is arranged above the container cavity, the fixing frame is connected with a first driving mechanism and an inflation leak hunting assembly, the inflation leak hunting assembly comprises a supporting frame, an inflation assembly and a second driving mechanism, the supporting frame is arranged above the container cavity and connected with the first driving mechanism, and the inflation assembly is connected with the second driving mechanism. The supporting frame is provided with a base used for supporting and fixing a large cylindrical battery to be tested, the inflation assembly is located above the base, and the second driving mechanism is fixed to the supporting frame and connected with the inflation assembly. According to the invention, the inflation assembly is controlled by the first driving assembly to continuously inflate the large cylindrical battery, and the to-be-detected large cylindrical battery placed on the support frame can sink into the liquid in the container cavity by using the second driving mechanism, so that the airtightness detection of the to-be-detected large cylindrical battery can be realized. The method has the characteristics of simple operation and high detection efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production and processing devices, in particular to a large cylindrical battery inflation leak detection device. Background Art

[0002] Large cylindrical batteries are usually assembled from multiple parts, and their sealing is a key link in product quality control. Based on this, leak detection for large cylindrical batteries is an indispensable process in the battery assembly process, and it is also an important part of ensuring product quality. At present, most large cylindrical battery leak detection uses simple equipment, and generally can only be done by manual inflation and leak detection one by one. This side leakage method is not only cumbersome to operate, but also has low detection efficiency, which greatly reduces the overall production efficiency and is also very easy to flow out unqualified products. Based on this, the present application provides a large cylindrical battery inflation leak detection device that is simple to operate and has high detection efficiency. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a large cylindrical battery inflation leak detection device, including a base, a container cavity for holding liquid is opened on the base, a fixing frame fixed on the base is provided above the container cavity, a first driving mechanism and an inflation leak detection component are connected to the fixing frame, the inflation leak detection component includes a support frame, an inflation component and a second driving mechanism, the support frame is placed above the container cavity and connected to the first driving mechanism, and a base for supporting and fixing a large cylindrical battery to be tested is provided on the support frame, the inflation component is located above the base and is used to inflate the large cylindrical battery to be tested, and the second driving mechanism is fixed on the support frame and connected to the inflation component and is used to control the up and down lifting of the inflation component.

[0004] Preferably, the base is provided with a cylindrical groove matching the bottom of the large cylindrical battery to be tested.

[0005] Preferably, the inflation component includes an inflation joint and a pressure head, the inflation joint is provided with a vertical through hole, one end of the through hole is connected to the inflation port of the large cylindrical battery, and the other end of the through hole is connected to an external inflation device, a boss is provided at the lower part of the inflation joint, the pressure head is fixedly connected to the second driving mechanism and movably sleeved on the inflation joint and located on the upper side of the boss, and a compression spring sleeved on the inflation joint is also provided between the pressure head and the boss.

[0006] Preferably, it also includes a support plate, on which a plurality of inflatable components are arranged, and on the support frame a plurality of bases corresponding to the inflatable components are arranged, and the second driving mechanism is fixedly connected to the support plate.

[0007] Preferably, the fixing frame is further provided with a guide plate, the guide plate is provided with a guide hole, and the driving end of the first driving mechanism passes through the guide hole and is connected to the supporting frame.

[0008] Preferably, it also includes a limit sensing switch, which is installed on the fixing frame and is used to control the descending distance of the supporting frame.

[0009] Preferably, a control system is also provided on the base, and the first driving mechanism, the inflation assembly and the second driving mechanism are respectively connected to the control system.

[0010] Preferably, the first driving mechanism and the second driving mechanism are both lifting cylinders.

[0011] Compared with the prior art, the present application provides a large cylindrical battery inflation leak detection device, which controls the second drive mechanism to realize the up and down lifting of the inflation component to continuously inflate the large cylindrical battery to be tested, and uses the first drive mechanism to control the up and down lifting of the support frame, so that the large cylindrical battery to be tested fixed on the support frame can sink into the liquid in the container cavity and stand still. By checking whether the large cylindrical battery to be tested standing in the liquid in the container cavity has leakage and bubbling, it can be judged whether the large cylindrical battery to be tested is qualified. Therefore, the device can realize the airtightness detection of the large cylindrical battery to be tested, and has the characteristics of simple operation and high detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a structural schematic diagram of a large cylindrical battery inflation leak detection device in the utility model.

[0013] Figure 2 It is a structural cross-sectional view of the support frame, the inflation component and the large cylindrical battery in the utility model when they are installed.

[0014] In the figure: 1. base, 2. container cavity, 3. fixing frame, 31. guide plate, 4. first driving mechanism, 5. support frame, 6. inflation component, 61. inflation joint, 62. pressure head, 63. through hole, 64. boss, 65. compression spring, 7. second driving mechanism, 8. large cylindrical battery, 9. base, 10. support plate. DETAILED DESCRIPTION

[0015] In order to facilitate understanding of the structure and operation method of the utility model, the utility model is described in more detail below in conjunction with the drawings and optimized embodiments of the specification, but the protection scope of the utility model is not limited to the following specific embodiments. It should be noted that the structural features and component sizes in the embodiments of the utility model can be changed, the connection method can be replaced, and the size of the device can be changed without affecting the use effect.

[0016] Unless otherwise defined, all professional terms used hereinafter have the same meaning as those generally understood by those skilled in the art. The words "first", "second" and similar words used in the specification and claims of the utility model patent application do not indicate any order, quantity or importance, but are merely for the convenience of distinguishing the corresponding parts. Similarly, words such as "one" or "one" do not indicate a quantity limitation, but indicate the existence of at least one. Words such as "connect" or "connected" are not limited to direct connections, but can be indirectly connected through other intermediate connectors. "Above", "below", "one side", "the other side", "vertical", "lateral", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship also changes accordingly.

[0017] like Figure 1 , Figure 2 As shown, a large cylindrical battery inflation leak detection device provided by the utility model includes a base 1, a container cavity 2 for containing liquid is opened on the base 1, a fixing frame 3 fixed on the base 1 is provided above the container cavity 2, a first driving mechanism 4 and an inflation leak detection component are connected to the fixing frame 3, and the inflation leak detection component includes a support frame 5, an inflation component 6 and a second driving mechanism 7, the support frame 5 is placed above the container cavity 2 and connected to the first driving mechanism 4, and a base 9 for supporting and fixing a large cylindrical battery 8 to be tested is provided on the support frame 5, the inflation component 6 is located above the support frame 5 and is used to inflate the large cylindrical battery 8 to be tested, and the second driving mechanism 7 is fixed on the support frame 5 and connected to the inflation component 6 for controlling the inflation component 6 to rise and fall.

[0018] In this embodiment, the first driving mechanism 4 and the second driving mechanism 7 are both lifting cylinders; the liquid in the container cavity 2 is water, and the gas filled into the large cylindrical battery 8 to be tested by the inflation component 6 is nitrogen.

[0019] When it is necessary to perform a leak test on the large cylindrical battery 8, first, the large cylindrical battery 8 to be tested is placed on the base 9 of the support frame 5 for fixing, and the second driving mechanism 7 is used to drive the inflation assembly 6 to descend so that the inflation assembly 6 matches and closely contacts the upper surface of the large cylindrical battery 8 to be tested, and at the same time, the external gas source is controlled to keep continuously filling with gas; then, the support frame 5 is driven to descend by the first driving mechanism 4 until the entire inflation leak detection assembly is completely immersed in the water in the container cavity 2 and left to stand, and then the large cylindrical battery 8 to be tested is checked for leakage and bubbling. If there is leakage and bubbling, it can be determined that the air tightness of the large cylindrical battery 8 to be tested is unqualified. After the leak test is completed, the first driving mechanism 4 is controlled to drive the support frame 5 to rise until it is separated from the water surface of the container cavity 2; finally, the second driving mechanism 7 is controlled to drive the inflation assembly 6 to rise and separate from the upper surface of the large cylindrical battery 8, and the external gas source inflation is stopped. At this time, the inflation leak detection of the large cylindrical battery 8 is completed, and the operator can pick out qualified and unqualified large cylindrical batteries 8 according to the test results and place them in the corresponding area. Therefore, the device can quickly and accurately realize the airtightness detection of the large cylindrical battery 8, and has the characteristics of simple structure, simple operation and high detection efficiency.

[0020] like Figure 2 As shown, the base 9 is provided with a cylindrical groove matching the bottom of the large cylindrical battery 8 to be tested.

[0021] In this embodiment, a cylindrical groove matching the bottom of the large cylindrical battery 8 to be tested is provided on the base 9, so that the large cylindrical battery 8 to be tested can be stably placed on the base 9, thereby ensuring the accuracy of the air tightness detection of the large cylindrical battery.

[0022] like Figure 2 As shown, the inflation component 6 includes an inflation connector 61 and a pressure head 62. The inflation connector 61 is provided with a vertical through hole 63. One end of the through hole 63 is connected to the inflation port of the large cylindrical battery 8, and the other end of the through hole 63 is connected to the external inflation device. A boss 64 is provided at the lower part of the inflation connector 61. The pressure head 62 is fixedly connected to the second driving mechanism 7 and is movably sleeved on the inflation connector 61 and is located on the upper side of the boss 64. A compression spring 65 sleeved on the inflation connector 61 is also provided between the pressure head 62 and the boss 64.

[0023] In this embodiment, due to the connection between multiple bases 9 and the corresponding large cylindrical batteries 8 to be tested, it is very likely that the detection heights of the multiple large cylindrical batteries 8 to be tested are different, and then the one end of the inflation port of the large cylindrical battery 8 to be tested will be damaged during the downward pressing process of the inflation component 6. The structure of the inflation component 6 realizes a flexible connection between the inflation connector 61 and the large cylindrical battery 8 to be tested. During the test, the through hole 63 on the inflation connector 61 can connect the external inflation device with the large cylindrical battery 8 to be tested. When the second driving mechanism 7 drives the pressure head 62 to move downward, under the action of the compression spring 65, the inflation connector 61 will move upward, thereby avoiding the inflation connector 61 from causing damage to the one end of the inflation port of the large cylindrical battery 8 to be tested due to the inconsistent heights of the multiple large cylindrical batteries 8 to be tested, which can not only extend the service life of the components, but also ensure the accuracy of the test results.

[0024] like Figure 1 As shown, it also includes a support plate 10, on which a plurality of inflatable components 6 are arranged, and on the support frame 5 a plurality of bases 9 corresponding one to one with the inflatable components 6 are arranged, and the second driving mechanism 7 is fixedly connected to the support plate 10.

[0025] In this embodiment, by installing multiple bases 9 on the support frame 5 and providing multiple inflatable components 6 corresponding to the bases 9 on the support plate 10, the air tightness of multiple large cylindrical batteries 8 can be tested simultaneously, effectively improving the detection efficiency.

[0026] like Figure 1 As shown, the fixing frame 3 is further provided with a guide plate 31 , the guide plate 31 is provided with a guide hole, and the driving end of the first driving mechanism 4 passes through the guide hole and is connected to the supporting frame 5 .

[0027] In the present embodiment, by providing the guide plate 31 and the guide hole, when the first driving mechanism 4 drives the support frame 5 to move up and down, the guide plate 31 and the guide hole can guide the driving end of the first driving mechanism 4, thereby preventing the phenomenon of misalignment and jamming during the lifting process, thereby ensuring the stability of the entire inflation leak detection assembly in the lifting and lowering. At the same time, in the present embodiment, another set of guide mechanisms is also provided, which can guide the lifting and lowering process of the support plate 10 driven by the second driving mechanism 7.

[0028] It also includes a limit sensing switch (not shown in the figure), which is installed on the fixing frame 3 to control the descending distance of the supporting frame 5.

[0029] In this embodiment, the limit sensing switch provided can effectively control the depth of the support frame 5 descending into the container cavity 2 each time, thereby providing a guarantee for test automation and test accuracy.

[0030] The base 1 is also provided with a control system, and the first driving mechanism 4, the inflation component 6 and the second driving mechanism 7 are respectively connected to the control system.

[0031] In this embodiment, the first drive mechanism 4, the second drive mechanism 7 and the inflation assembly 6 are automatically controlled based on the set control system, which effectively improves the automation level of the device and reduces the labor intensity of the operator.

[0032] The above is a detailed introduction to a large cylindrical battery inflation leak detection device provided by the utility model. This article uses specific examples to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A large cylindrical battery inflation leak detection device, characterized in that: The invention comprises a base (1), wherein a container cavity (2) for containing liquid is provided on the base (1), a fixing frame (3) fixed on the base (1) is provided above the container cavity (2), a first driving mechanism (4) and an inflation leak detection component are connected to the fixing frame (3), and the inflation leak detection component comprises a support frame (5), an inflation component (6) and a second driving mechanism (7), the support frame (5) is placed above the container cavity (2) and connected to the first driving mechanism (4), and a base (9) for supporting and fixing a large cylindrical battery (8) to be tested is provided on the support frame (5), the inflation component (6) is located above the base (9) and is used to inflate the large cylindrical battery (8) to be tested, and the second driving mechanism (7) is fixed on the support frame (5) and is connected to the inflation component (6) and is used to control the inflation component (6) to rise and fall.

2. The large cylindrical battery inflation leak detection device according to claim 1, characterized in that: The base (9) is provided with a cylindrical groove matching the bottom of the large cylindrical battery (8) to be tested.

3. The large cylindrical battery inflation leak detection device as claimed in claim 1, characterized in that: The inflation assembly (6) comprises an inflation joint (61) and a pressure head (62); the inflation joint (61) is provided with a vertically penetrating through hole (63); one end of the through hole (63) is connected to the inflation port of the large cylindrical battery (8); the other end of the through hole (63) is connected to an external inflation device; a boss (64) is provided at the bottom of the inflation joint (61); the pressure head (62) is fixedly connected to the second driving mechanism (7) and movably sleeved on the inflation joint (61) and located on the upper side of the boss (64); a compression spring (65) sleeved on the inflation joint (61) is also provided between the pressure head (62) and the boss (64).

4. The large cylindrical battery inflation leak detection device as claimed in claim 1, characterized in that: It also comprises a support plate (10), wherein a plurality of inflatable components (6) are arranged on the support plate (10), a plurality of bases (9) corresponding one to one with the inflatable components (6) are arranged on the support frame (5), and a second driving mechanism (7) is fixedly connected to the support plate (10).

5. The large cylindrical battery inflation leak detection device as claimed in claim 4, characterized in that: The fixing frame (3) is also provided with a guide plate (31), the guide plate (31) is provided with a guide hole, and the driving end of the first driving mechanism (4) passes through the guide hole and is connected to the supporting frame (5).

6. The large cylindrical battery inflation leak detection device as claimed in claim 1, characterized in that: It also comprises a limit sensing switch, which is installed on the fixing frame (3) and is used to control the descending distance of the supporting frame (5).

7. The large cylindrical battery inflation leak detection device as claimed in claim 1, characterized in that: The base (1) is also provided with a control system, and the first driving mechanism (4), the inflation component (6) and the second driving mechanism (7) are respectively connected to the control system.

8. The large cylindrical battery inflation leak detection device according to any one of claims 1 to 7, characterized in that: The first driving mechanism (4) and the second driving mechanism (7) are both lifting cylinders.

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