Lithium battery helium detection mechanism

Abstract

The utility model discloses a lithium battery helium detection mechanism, which comprises a first support frame and a support seat, the top of the first support frame is fixedly connected with a workbench, the top of the support seat is connected with a plurality of second support frames, the tops of the plurality of second support frames are fixedly connected with the same fixed plate, and the fixed plate is fixedly connected with the workbench. The top of the fixing plate is connected with a battery shell through a fixing mechanism, an inflation mechanism is arranged at the top of the workbench and connected with an air inlet mechanism, the fixing mechanism comprises a fixing sleeve fixedly connected to the top of the fixing plate, and a sealing ring is arranged at the top of the fixing sleeve. And a communication port communicated with the sealing ring is formed in the fixed sleeve. According to the utility model, through cooperation of the fixing sleeve, the sealing ring, the inflation tube and the abutting head, fixation of the battery housing and detection of the sealing performance of the battery housing are realized, and the problem that the battery housing cannot be well fixed during helium detection and detection of the sealing performance of the battery is affected is avoided.

Description

Technical Field

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

[0002] Lithium batteries are a type of battery that uses lithium metal or lithium alloy as positive / negative electrode materials and non-aqueous electrolyte solutions. Due to the highly active chemical properties of lithium metal, the processing, storage, and use of lithium metal have very high environmental requirements. With the development of science and technology, lithium batteries have become mainstream.

[0003] In order to prevent the battery surface from being degraded due to impurities such as water vapor, it is necessary to use a tube shell for sealing. However, due to various reasons, small holes that are difficult to be found by the naked eye are often generated at the sealing points or lead joints of the tube shell. Therefore, after the components are packaged, some methods need to be taken to detect the existence of these small holes. In the lithium battery industry, poor product sealing can lead to serious consequences such as serious degradation of battery performance, electrolyte leakage, battery swelling and even explosion, which seriously damages the reputation of the product. Therefore, a lithium battery helium detection mechanism connection is proposed to solve the problem. Utility Model Content

[0004] The utility model aims to solve the problems existing in the prior art and proposes a lithium battery helium detection mechanism.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A lithium battery helium detection mechanism comprises a first support frame and a support seat, wherein the top of the first support frame is fixedly connected to a workbench, the top of the support seat is connected to a plurality of second support frames, the tops of the plurality of second support frames are fixedly connected to the same fixed plate, the top of the fixed plate is connected to a battery housing via a fixing mechanism, the top of the workbench is provided with an inflation mechanism, and the inflation mechanism is connected to an air intake mechanism.

[0007] Preferably, the fixing mechanism includes a fixing sleeve fixedly connected to the top of the fixing plate, a sealing ring is provided on the top of the fixing sleeve, a connecting port connected to the sealing ring is provided in the fixing sleeve, a first cylinder is provided on the top of the support seat, and an output end of the first cylinder is connected to the connecting port.

[0008] Preferably, the inflation mechanism includes an inflation table fixedly connected to the top of the workbench, a second cylinder is fixedly connected to the top of the inflation table, an inflation tube is fixedly connected to the output end of the second cylinder, a tightening head is connected to the bottom of the inflation tube, the tightening head is provided with an air port, and the air port is communicated with the inflation tube.

[0009] Preferably, a sealing gasket is provided at the bottom of the abutting head, and the sealing gasket is matched with the top of the battery housing.

[0010] Preferably, the air intake mechanism comprises an air supply pipe fixedly connected to the top of the inflation platform and arranged vertically, and the air supply pipe is connected to two groups of air intake pipes.

[0011] Preferably, the number of the fixing sleeves is eight.

[0012] Preferably, the fixing sleeve is adapted to the inner diameter of the battery housing.

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] 1. The utility model fixes the battery shell and detects the sealing performance of the battery shell through the coordinated use of the fixing sleeve, the sealing ring, the inflation tube and the tightening head, thereby avoiding the battery shell not being well fixed during helium detection, thereby affecting the detection of the battery sealing performance.

[0015] 2. The utility model can perform batch inspection on battery shells by providing multiple sets of fixed sleeves and matching tightening heads, thereby improving the inspection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional structural schematic diagram of a lithium battery helium detection mechanism proposed by the utility model;

[0017] Figure 2 This is a schematic diagram of the connection structure between the fixing mechanism and the battery shell in a lithium battery helium detection mechanism proposed by the utility model;

[0018] Figure 3 This is a schematic diagram of the connection structure between a fixed sleeve and a sealing ring in a lithium battery helium detection mechanism proposed by the utility model;

[0019] Figure 4 This is a schematic diagram of the connection structure between the inflation tube and the abutment head in a lithium battery helium detection mechanism proposed by the utility model;

[0020] Figure 5 The utility model provides a schematic diagram of the battery shell structure in a lithium battery helium detection mechanism.

[0021] In the figure: 1. first support frame; 2. workbench; 3. support seat; 4. second support frame; 5. fixing plate; 6. first cylinder; 7. inflation table; 8. second cylinder; 9. inflation pipe; 10. tightening head; 11. battery casing; 12. air inlet pipe; 13. fixing sleeve; 14. sealing ring; 15. sealing gasket. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are 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 direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0024] Reference Figure 1-5 A lithium battery helium detection mechanism comprises a first support frame 1 and a support seat 3, a workbench 2 is fixedly connected to the top of the first support frame 1, a plurality of second support frames 4 are connected to the top of the support seat 3, a same fixing plate 5 is fixedly connected to the top of the plurality of second support frames 4, a battery housing 11 is connected to the top of the fixing plate 5 through a fixing mechanism, and the fixing mechanism comprises a fixing sleeve 13 fixedly connected to the top of the fixing plate 5, the fixing sleeve 13 is adapted to the inner diameter of the battery housing 11, and the fixing sleeve 13 is adapted to the inner diameter of the battery housing 11, so as to facilitate the fixing of the battery housing 11;

[0025] The number of the fixing sleeves 13 is eight groups, and the eight groups can achieve the effect of batch detection, thereby improving the work efficiency. A sealing ring 14 is provided on the top of the fixing sleeve 13, and the sealing ring 14 and the sealing gasket 15 are both made of rubber, which avoids damage to the battery housing 11 when pressed tightly, thereby preventing the battery housing 11 from being deformed;

[0026] A communication port connected to the sealing ring 14 is provided in the fixed sleeve 13, and the helium in the air inlet pipe 12 can enter the battery housing 11 through the communication port, so as to detect whether there is helium leakage at the top protrusion of the battery housing 11;

[0027] A first cylinder 6 is provided on the top of the support seat 3, and the output end of the first cylinder 6 is connected to the connecting port. An inflation mechanism is provided on the top of the workbench 2, and the inflation mechanism includes an inflation table 7 fixedly connected to the top of the workbench 2, and a second cylinder 8 is fixedly connected to the top of the inflation table 7, and an inflation pipe 9 is fixedly connected to the output end of the second cylinder 8, wherein the air intake mode of the air intake pipe 12 and the working modes of the first cylinder 6 and the second cylinder 8 are all prior arts, and will not be described in detail here;

[0028] A tightening head 10 is connected to the bottom of the inflation tube 9, and the tightening head 10 is provided with an air port, which is communicated with the inflation tube 9. A sealing gasket 15 is provided at the bottom of the tightening head 10, and the sealing gasket 15 is adapted to the top of the battery shell 11. The inflation mechanism is connected to an air intake mechanism, and the air intake mechanism includes an air supply pipe fixedly connected to the top of the inflation platform 7 and vertically arranged, and the air supply pipe is connected to two groups of air intake pipes 12.

[0029] The specific working principle of the utility model is as follows:

[0030] In the initial state, eight groups of battery shells 11 are respectively placed on the outer surface of the fixed sleeve 13, and the first cylinder 6 is started. The first cylinder 6 works to make the sealing ring 14 swell, and the sealing ring 14 swells and then makes the sealing ring 14 press against the inner wall of the battery shell 11. Then the second cylinder 8 is started, and the second cylinder 8 drives the abutting head 10 to work, so that the bottom of the abutting head 10 contacts the top of the battery shell 11, and the sealing gasket 15 at the bottom of the abutting head 10 fixes the top of the battery shell 11, thereby avoiding the phenomenon that the instability of the battery shell 11 affects the test results when testing the helium stability of the battery;

[0031] At the same time, inflation is carried out through the air intake pipe 12, and helium is injected into the tightening head 10 from the air intake pipe 12 at high pressure, and then injected into the battery casing 11 through the tightening head 10. The helium enters the interior of the battery casing 11 through the top of the battery casing 11, and then the helium leakage is tested at the bulge on the top of the battery casing 11. By working with eight groups of fixed sleeves 13 at the same time, the effect of batch detection can be achieved, thereby improving the detection efficiency.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A lithium battery helium detection mechanism, comprising a first support frame (1) and a support seat (3), characterized in that: The top of the first support frame (1) is fixedly connected to a workbench (2), the top of the support seat (3) is connected to a plurality of second support frames (4), the tops of the plurality of second support frames (4) are fixedly connected to the same fixed plate (5), the top of the fixed plate (5) is connected to a battery housing (11) via a fixing mechanism, and the top of the workbench (2) is provided with an inflation mechanism, which is connected to an air intake mechanism.

2. A lithium battery helium detection mechanism according to claim 1, characterized in that: The fixing mechanism comprises a fixing sleeve (13) fixedly connected to the top of the fixing plate (5), a sealing ring (14) being provided at the top of the fixing sleeve (13), a connecting port being provided in the fixing sleeve (13) and being connected to the sealing ring (14), a first cylinder (6) being provided at the top of the supporting seat (3), and an output end of the first cylinder (6) being connected to the connecting port.

3. A lithium battery helium detection mechanism according to claim 1, characterized in that: The inflation mechanism comprises an inflation platform (7) fixedly connected to the top of the workbench (2); a second cylinder (8) is fixedly connected to the top of the inflation platform (7); an inflation tube (9) is fixedly connected to the output end of the second cylinder (8); a tightening head (10) is connected to the bottom of the inflation tube (9); the tightening head (10) is provided with an air port, and the air port is communicated with the inflation tube (9).

4. A lithium battery helium detection mechanism according to claim 3, characterized in that: A sealing gasket (15) is provided at the bottom of the abutting head (10), and the sealing gasket (15) is matched with the top of the battery housing (11).

5. A lithium battery helium detection mechanism according to claim 3, characterized in that: The air intake mechanism comprises an air delivery pipe which is fixedly connected to the top of the inflation platform (7) and is vertically arranged, and the air delivery pipe is connected to two groups of air intake pipes (12).

6. A lithium battery helium detection mechanism according to claim 2, characterized in that: The number of the fixing sleeves (13) is eight groups.

7. A lithium battery helium detection mechanism according to claim 2, characterized in that: The fixing sleeve (13) is adapted to the inner diameter of the battery housing (11).

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