Battery sealing performance detection device and detection system

Abstract

The utility model relates to the technical field of battery manufacturing, and particularly discloses a battery sealing performance detection device and a detection system. The device is used for detecting the sealing performance of a detected battery, the detected battery is provided with a detection hole, the battery sealing performance detection device comprises a male fixing block and a female fixing block which are detachably connected, the male fixing block and the female fixing block define a containing space, the detected battery is fixedly arranged in the containing space, the male fixing block is provided with a through hole, and the through hole is communicated with the containing space and the outside. The male fixing block is fixedly connected with a communication assembly, the communication assembly penetrates through the through hole and is inserted into the detection hole, and external air supply equipment injects air into the detected battery and pressurizes the detected battery through the communication assembly. According to the device, the portable degree is improved through lightweight improvement of the structure, so that movable detection is realized, the detection operation is simple and convenient, and the detection effect is visual.

Description

Technical Field

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

[0002] Lithium-ion power batteries have been widely used due to their advantages such as high energy, high battery voltage, wide operating temperature range, and long storage life. After the battery core of the lithium battery is placed in the shell, the cover plates at both ends of the shell and the shell are tightly pressed, and the cover plates and the shell are welded by welding. However, defects such as welding through and welding leakage often occur, posing potential safety hazards to the subsequent charging and discharging of the battery. The sealing performance of lithium-ion batteries is crucial for the safety of the battery core. The sealing failure of the battery may lead to battery corrosion, short circuit, fire, or even explosion risk, resulting in huge losses. Therefore, the prevention work for the failure of the battery core is particularly important.

[0003] In the prior art, the airtightness of the battery is often detected by an external air injection scheme. In this scheme, an epoxy adhesive is used to fix a compressed air pipe in the hole of the battery, and after the compressed air source is connected to the compressed air pipe, air is injected into the battery. However, the operation steps of this scheme are numerous, it is necessary to wait for the epoxy adhesive to cure, which takes a long time, and it is easy to pollute the workshop environment.

[0004] Currently, there are also schemes for detection using an online mass spectrometer or other special equipment. However, the position of the detection equipment is fixed, with poor flexibility, and the detection is not convenient and intuitive enough. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a battery sealing detection device and a detection system, so as to provide a portable and movable detection device, making the detection operation simple and the detection effect intuitive.

[0006] To achieve the above object, the utility model adopts the following technical solutions:

[0007] A battery sealing detection device is used to detect the sealing performance of a battery under test. A detection hole is provided on the battery under test. The battery sealing detection device includes a male fixing block and a female fixing block that are detachably connected. The male fixing block and the female fixing block enclose an accommodating space, and the battery under test is fixedly arranged in the accommodating space. A through hole is provided on the male fixing block, and the through hole communicates the accommodating space with the outside. A connecting component is fixedly connected to the male fixing block. The connecting component passes through the through hole and is inserted into the detection hole, and an external air supply device injects air and pressurizes the battery under test through the connecting component.

[0008] As an alternative technical solution of the battery sealing detection device, the communication component includes an adapter and a sealing ring. The adapter passes through the sealing ring and is inserted into the through hole, and the sealing ring is used to seal the gap between the through hole and the adapter.

[0009] As an alternative technical solution of the battery sealing detection device, the adapter is a stepped tube, and its stepped surface is a positioning surface; the sealing ring is clamped between the outer surface of the male fixing block and the positioning surface.

[0010] As an alternative technical solution of the battery sealing detection device, the communication component further includes a quick connector. The quick connector is inserted into one end of the adapter away from the accommodation space, and the output end of the external air supply device is connected to the adapter through the quick connector.

[0011] As an alternative technical solution of the battery sealing detection device, a plurality of hooks are fixed to one of the male fixing block and the female fixing block, and a buckle is rotatably connected to the other. The number of the buckles is the same as that of the hooks, and each buckle can be buckled and connected with one hook.

[0012] As an alternative technical solution of the battery sealing detection device, the buckle includes a lever and a buckle ring rotatably connected to the lever. The buckle ring is used to engage with the hook, and the lever is rotatably connected to the female fixing block.

[0013] As an alternative technical solution of the battery sealing detection device, the male fixing block is provided with a male accommodation groove, and the female fixing block is provided with a female accommodation groove. The male accommodation groove and the female accommodation groove enclose the accommodation space.

[0014] As an alternative technical solution of the battery sealing detection device, the male fixing block is penetrated with a plurality of first exhaust holes, and the accommodation space is communicated with the outside through the first exhaust holes; and / or the female fixing block is penetrated with a plurality of second exhaust holes, and the accommodation space is communicated with the outside through the second exhaust holes.

[0015] As an alternative technical solution of the battery sealing detection device, the male fixing block has a male fitting surface, and the female fixing block has a female fitting surface. The male fitting surface and the female fitting surface enclose the accommodation space. The accommodation space is in the shape of a through hole, and the male fitting surface and the female fitting surface are respectively attached to the surface of the battery to be tested.

[0016] A battery sealing detection system includes a handling device, a test pool and the above-mentioned battery sealing detection device. The test pool is filled with a test liquid, and the handling device is used to put the battery sealing detection device into or take it out of the test pool.

[0017] The beneficial effects of the present utility model:

[0018] The battery airtightness detection device, through the separate setting of the male fixing block and the female fixing block, helps to reduce the installation difficulty of the battery airtightness detection device on the battery to be tested, improve the test efficiency of the battery airtightness, reduce the workload of the operator, and reduce the space occupied by the detection. At the same time, it also helps to control the production cost of the battery airtightness detection device and reduce the manufacturing difficulty of the battery airtightness detection device. By using the accommodating space formed by the male fixing block and the female fixing block, the positioning purpose of the battery to be tested can be achieved, avoiding the situation that the battery to be tested detaches from the battery airtightness detection device accidentally during the test process, ensuring the accuracy of the test result, and improving the test efficiency. With the help of the setting of the communication component, it can ensure that the external air supply device can smoothly inject gas and pressurize the battery to be tested to meet the test requirements, reducing the risk of air leakage during the gas injection and pressurization process. Through the above overall improvement, the battery airtightness detection device has the advantages of being simple, small, easy to manufacture, and low in cost. It can quickly complete the gas injection and pressurization operation on the battery to be tested, facilitating the subsequent detection process to be completed smoothly. Through the lightweight improvement of the structure, the portability of the battery airtightness detection device is improved, enabling the movable detection of the battery to be tested, making the airtightness detection operation simple and the detection effect intuitive, thus facilitating the online battery sampling inspection quickly.

[0019] The battery airtightness detection system uses a handling device to transfer the battery airtightness detection device, immerses the battery to be tested together with the battery airtightness detection device into the test liquid. The operator can directly see the air leakage position with poor airtightness on the battery to be tested by observing whether there are bubbles, and obtain the airtightness detection result accordingly. The above detection method is simple and reliable, with high detection efficiency and small workload. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the battery airtightness detection device provided in Embodiment 1 of the present invention;

[0021] Figure 2 is an exploded view of the battery airtightness detection device provided in Embodiment 1 of the present invention;

[0022] Figure 3 is a schematic structural diagram of the battery airtightness detection device provided in Embodiment 2 of the present invention;

[0023] Figure 4 is an exploded view of the battery airtightness detection device provided in Embodiment 2 of the present invention.

[0024] In the figure:

[0025] 1. Quick connector; 2. Adapter; 3. Sealing ring; 4. Battery under test; 41. Detection hole; 5. Male fixing block; 51. Through hole; 52. Hook; 53. Male fitting surface; 6. Lock; 61. Buckle; 62. Lever; 7. Female fixing block; 71. Female receiving groove; 72. Female fitting surface. Detailed implementation manner

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature being "above", "above" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "below", "below" and "under" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0028] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0029] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0030] Example 1

[0031] As Figure 1 and Figure 2 shown, this embodiment provides a battery sealing detection device for detecting the sealing of the battery under test 4. The battery under test 4 is provided with a detection hole 41. The battery sealing detection device includes a male fixing block 5 and a female fixing block 7 that are detachably connected. The male fixing block 5 and the female fixing block 7 enclose an accommodation space, and the battery under test 4 is fixedly arranged in the accommodation space. The male fixing block 5 is provided with a through hole 51, and the through hole 51 communicates the accommodation space with the outside. A connecting component is fixedly connected to the male fixing block 5. The connecting component passes through the through hole 51 and is inserted into the detection hole 41. An external air supply device injects gas and pressurizes the battery under test 4 through the connecting component.

[0032] Through the separate setting of the male fixing block 5 and the female fixing block 7, this battery sealing detection device helps to reduce the installation difficulty of the battery sealing detection device on the battery under test 4, improve the test efficiency of the battery sealing, reduce the workload of the operator, and reduce the space occupied by the detection. At the same time, it also helps to control the production cost of the battery sealing detection device and reduce the manufacturing difficulty of the battery sealing detection device. By using the accommodation space enclosed by the male fixing block 5 and the female fixing block 7, the positioning purpose of the battery under test 4 can be achieved, avoiding the situation that the battery under test 4 breaks away from the battery sealing detection device accidentally during the test process, ensuring the accuracy of the test results, and improving the test efficiency. With the help of the setting of the connecting component, it is ensured that the external air supply device can smoothly inject gas and pressurize the battery under test 4 to meet the test requirements, reducing the risk of air leakage during the gas injection and pressurization process. Through the above overall improvement, the battery sealing detection device has the advantages of being simple, small, easy to manufacture, and low in cost. It can quickly complete the gas injection and pressurization operation of the battery under test 4 to facilitate the subsequent detection process to be completed smoothly. Through the lightweight improvement of the structure, the portability of the battery sealing detection device is improved, so that the movable detection of the battery under test 4 can be realized, making the airtightness detection operation simple and the detection effect intuitive, so that the on-line battery sampling inspection can be carried out conveniently and quickly.

[0033] In this embodiment, the external air supply device is a compressed air source in the workshop, and the compressed air source is connected to the connecting component through a trachea at its output end.

[0034] In this embodiment, the connecting component includes an adapter 2 and a sealing ring 3. The adapter 2 passes through the sealing ring 3 and is inserted through the through hole 51. The sealing ring 3 is used to seal the gap between the through hole 51 and the adapter 2.

[0035] With the help of the setting of the adapter 2, it is ensured that the external gas supply equipment can smoothly inject gas and pressurize the battery 4 under test; with the help of the setting of the sealing ring 3, the sealing effect of the connection between the connecting component and the male fixing block 5 can be ensured, thereby reducing the risk of gas leakage during the gas injection and pressurization process.

[0036] Furthermore, the adapter 2 is in a stepped tube shape, and the stepped surface thereof is a positioning surface; the sealing ring 3 is sandwiched between the outer surface of the male fixing block 5 and the positioning surface.

[0037] The above layout design reduces the space occupied by the connecting component and optimizes its specific structure. By limiting the placement of the sealing ring 3, the sealing ring 3 is guaranteed to seal the gap between the adapter 2 and the male fixing block 5, ensuring smooth gas injection and pressurization operations and improving the operating stability of the battery sealing test device.

[0038] In this embodiment, the connection assembly further includes a quick connector 1, which is plugged into the end of the adapter 2 away from the accommodating space. The output end of the external air supply device is connected to the adapter 2 through the quick connector 1. Specifically, the air pipe of the compressed air source is connected to the quick connector 1.

[0039] By providing the quick connector 1, smooth interaction between the external gas supply device and the connecting component can be ensured. The above design further reduces the risk of gas leakage in the battery sealing detection device during the gas injection and pressurization process, ensuring the smooth progress of the detection.

[0040] For example, one of the male fixing block 5 and the female fixing block 7 is fixedly connected to a plurality of hooks 52, and the other is rotatably connected to a lock catch 6. The number of lock catches 6 is the same as the number of hooks 52, and each lock catch 6 can be engaged with a hook 52. Specifically, all the hooks 52 are evenly distributed along the circumference of the edge of the male fixing block 5, and all the lock catches 6 are evenly distributed along the circumference of the edge of the female fixing block 7.

[0041] By defining the hook 52 and the lock 6, a detachable connection is achieved between the male fixing block 5 and the female fixing block 7. This definition reduces the difficulty of installing and removing the male and female fixing blocks 5 and 7 from the battery under test 4, reduces the workload of the operator, and improves testing efficiency. Furthermore, the hook 52 and the lock 6 have a simple and reliable structure, are easy to manufacture, have low production costs, and require minimal space.

[0042] Furthermore, the lock buckle 6 includes a trigger member 62 and a buckle 61 rotatably connected to the trigger member 62 , the buckle 61 is used to clamp the hook 52 , and the trigger member 62 is rotatably connected to the female fixing block 7 .

[0043] By defining the specific structure of the buckle 6, the layout of the buckle 6 is simplified, the space occupied by the buckle 6 is reduced, the operation difficulty of the operator is reduced, and the disassembly and assembly efficiency of the male fixing block 5 and the female fixing block 7 on the battery under test 4 is improved.

[0044] In this embodiment, the detection hole 41 is the liquid injection hole on the battery under test 4, and the adapter 2 is connected to the inside of the battery under test 4 through the liquid injection hole. In other embodiments of this embodiment, the detection hole 41 is a sealing processing hole on the battery under test 4, and the sealing processing hole is a hole processed for detecting the sealing performance, and the adapter 2 is connected to the inside of the battery under test 4 through the sealing processing hole.

[0045] In other embodiments of this embodiment, a gasket is selected to replace the sealing ring 3, and the gasket plays the same role as the sealing ring 3.

[0046] Exemplarily, the male fixing block 5 is provided with a male accommodation groove, and the female fixing block 7 is provided with a female accommodation groove 71, and the male accommodation groove and the female accommodation groove 71 enclose an accommodation space.

[0047] Through the above settings, the battery under test 4 can be wrapped and positioned by using the accommodation space enclosed by the male accommodation groove and the female accommodation groove 71. The above positioning method is simple and reliable, and the risk of the battery under test 4 generating a position offset relative to the battery sealing detection device is extremely low, which helps to improve the reliability of the detection result.

[0048] In this embodiment, the battery under test 4 is a cylindrical battery as an example, the detection hole 41 is provided on the end face of the battery under test 4, and the through hole 51 is provided at the bottom of the male accommodation groove.

[0049] In one embodiment of this embodiment, the male fixing block 5 is penetrated with a plurality of first exhaust holes, and the accommodation space is connected to the outside through the first exhaust holes; the female fixing block 7 is penetrated with a plurality of second exhaust holes, and the accommodation space is connected to the outside through the second exhaust holes. In another embodiment of this embodiment, only the first exhaust holes are provided. In yet another embodiment of this embodiment, only the second exhaust holes are provided.

[0050] By providing the first exhaust holes and the second exhaust holes, the effective communication between the accommodation space and the outside is realized, so that the surface of the battery under test 4 can be ensured to be in full contact with the outside, thereby improving the accuracy of the test result.

[0051] This embodiment also provides a battery sealing detection system, including a handling device, a test pool, and the above-mentioned battery sealing detection device. The test pool is filled with a test liquid, and the handling device is used to put the battery sealing detection device into or take it out of the test pool. Specifically, the test liquid is water.

[0052] The battery sealing detection system uses a handling device to transfer the battery sealing detection device, immersing the battery 4 to be tested together with the battery sealing detection device into the test liquid. By observing whether there are bubbles, the operator can directly see the air leakage positions with poor sealing on the battery 4 to be tested, and obtain the airtightness detection result accordingly. The above detection method is simple and reliable, with high detection efficiency and small workload.

[0053] Embodiment 2

[0054] As Figure 3 and Figure 4 As shown, the battery sealing detection device of this Embodiment 2 is basically the same as that of the above Embodiment 1. The difference between the two is that the male fixing block 5 has a male fitting surface 53, the female fixing block 7 has a female fitting surface 72, the male fitting surface 53 and the female fitting surface 72 enclose a receiving space, the receiving space is in the shape of a through hole, and the male fitting surface 53 and the female fitting surface 72 are respectively in contact with the surface of the battery 4 to be tested.

[0055] Through the above settings, the receiving space enclosed by the male fitting surface 53 and the female fitting surface 72 can be used to perform a hoop-type positioning on the battery 4 to be tested. The above positioning method is simple and reliable, and it is easy to make the surface of the battery 4 to be tested fully contact with the outside, which helps to improve the reliability of the detection result.

[0056] In this embodiment, the battery 4 to be tested is a cylindrical battery as an example. The detection hole 41 is provided on the side of the battery 4 to be tested, and the through hole 51 is provided on the male fitting surface 53.

[0057] This embodiment also provides a battery sealing detection system, including a handling device, a test pool, and the above battery sealing detection device. The test pool is filled with test liquid, and the handling device is used to put the battery sealing detection device into or take it out of the test pool. Specifically, the test liquid is water.

[0058] The battery sealing detection system uses a handling device to transfer the battery sealing detection device, immersing the battery 4 to be tested together with the battery sealing detection device into the test liquid. By observing whether there are bubbles, the operator can directly see the air leakage positions with poor sealing on the battery 4 to be tested, and obtain the airtightness detection result accordingly. The above detection method is simple and reliable, with high detection efficiency and small workload.

[0059] Obviously, the above embodiments of the present utility model are merely examples for clearly illustrating the present utility model, rather than limitations on the implementation manners of the present utility model. For those of ordinary skill in the art, other different forms of changes or alterations can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the claims of the present utility model.

Claims

1. A battery sealing detection device for detecting the sealing performance of a battery under test (4), wherein a detection hole (41) is provided on the battery under test (4), and is characterized in that, The battery seal detection device includes a male fixing block (5) and a female fixing block (7) which are detachably connected. The male fixing block (5) and the female fixing block (7) enclose an accommodation space, and the battery under test (4) is fixedly arranged in the accommodation space. The male fixing block (5) is provided with a through hole (51), and the through hole (51) communicates the accommodation space with the outside. A connecting component is fixedly connected to the male fixing block (5), and the connecting component passes through the through hole (51) and is inserted into the detection hole (41). An external air supply device injects gas and pressurizes the battery under test (4) through the connecting component.

2. The battery sealing detection device according to claim 1, characterized in that The connecting component includes a connector (2) and a sealing ring (3). The connector (2) passes through the sealing ring (3) and is inserted into the through hole (51), and the sealing ring (3) is used to seal the gap between the through hole (51) and the connector (2).

3. The battery sealing detection device according to claim 2, characterized in that, The connector (2) is a stepped tube, and its stepped surface is a positioning surface; the sealing ring (3) is clamped between the outer surface of the male fixing block (5) and the positioning surface.

4. The battery seal detection device according to claim 2, characterized in that, The connecting component further includes a quick connector (1). The quick connector (1) is inserted into one end of the connector (2) away from the accommodation space, and the output end of the external air supply device is connected to the connector (2) through the quick connector (1).

5. The battery seal detection device according to claim 1, characterized in that One of the male fixing block (5) and the female fixing block (7) is fixedly connected with a plurality of hooks (52), and the other is rotatably connected with a lock (6). The number of the locks (6) is the same as that of the hooks (52), and each lock (6) can be snap-connected with one hook (52).

6. The battery sealing detection device according to claim 5, wherein The lock (6) includes a lever (62) and a buckle ring (61) rotatably connected to the lever (62). The buckle ring (61) is used for clamping the hook (52), and the lever (62) is rotatably connected to the female fixing block (7).

7. The battery sealing detection device according to claim 1, characterized in that, The male fixing block (5) is provided with a male accommodation groove, and the female fixing block (7) is provided with a female accommodation groove (71). The male accommodation groove and the female accommodation groove (71) enclose the accommodation space.

8. The battery sealing detection device according to claim 7, wherein, The male fixing block (5) is penetrated with a plurality of first exhaust holes, and the accommodation space is communicated with the outside through the first exhaust holes; and / or The female fixing block (7) is penetrated with a plurality of second exhaust holes, and the accommodation space is communicated with the outside through the second exhaust holes.

9. The battery sealing performance detection device according to any one of claims 1-8, characterized in that The male fixing block (5) has a male fitting surface (53), and the female fixing block (7) has a female fitting surface (72). The male fitting surface (53) and the female fitting surface (72) enclose the accommodation space, and the accommodation space is in the shape of a through hole. The male fitting surface (53) and the female fitting surface (72) are respectively in contact with the surface of the battery under test (4).

10. Battery sealing detection system, characterized in that, It includes a handling device, a test pool, and the battery seal detection device according to any one of claims 1-9. The test pool is filled with a test liquid, and the handling device is used to put the battery seal detection device into or take it out of the test pool.

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