Integrated cylindrical battery airtightness testing device

Abstract

The utility model discloses an integrated cylindrical battery air tightness testing device, which comprises an air tightness device body, a cylindrical battery piece is inserted in the air tightness device body, and the outer side of the air tightness device body is connected with an air tightness device top cover through thread engagement. The cylindrical battery piece is placed in the airtight device body, the airtight device body is connected with the cylindrical battery piece, the bottom end of the cylindrical battery piece can be gradually punctured by the ejector pin seat, and therefore the cylindrical battery piece is punched, a proper amount of water is added into a water area by a worker, the airtight device is sleeved with the cover plate, and the magnifying lens is located above the water. A worker opens the nitrogen cylinder to gradually inflate and pressurize the interior of the cylindrical battery piece until the pressure is 1.3-1.6 MPa, the pressure is maintained for 3-5 minutes, whether bubbles appear in the water of the cylindrical battery piece or not is observed, if no bubbles appear, the airtightness is good, if bubbles appear, the airtightness is poor, and the worker can be helped to carry out observation work through the arranged magnifying lens.

Description

Technical Field

[0001] The utility model relates to the technical field of battery air tightness testing, in particular to an integrated cylindrical battery air tightness testing device. Background Art

[0002] After sealing cylindrical batteries, airtightness testing is an important method for detecting safety hazards such as leakage. After sealing, the battery is pressurized to the required pressure using an airtightness tester. If the battery remains leak-free within the specified pressure and time, it demonstrates good airtightness.

[0003] The existing technology first uses a manual pressing device to punch a hole at the bottom of the battery or in the middle of the shell, then places the battery with the hole into a pressure test sleeve, and then puts the sleeve containing the battery into water to start pressing, observes the bubbles in the water and the pressure gauge connected to the pressure testing equipment, and records relevant data in a timely manner; the above-mentioned airtightness testing device has the following defects: 1. Battery punching requires a special punching device, and the airtightness test is another set of equipment; 2. The test sleeve needs to be placed in water, and the operation is relatively cumbersome. For this reason, we propose an integrated cylindrical battery airtightness testing device to solve the above problems. Utility Model Content

[0004] The purpose of the present utility model is to provide an integrated cylindrical battery airtightness testing device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an integrated cylindrical battery airtightness testing device, comprising an airtightness device body, a cylindrical battery component inserted into the interior of the airtightness device body, an airtightness device top cover connected to the outer side of the airtightness device body by threaded engagement, a pin seat fixedly arranged in the airtightness device body, the top end of the pin seat being located in the interior of the cylindrical battery component, the cylindrical battery component and the pin seat being communicated, a water area being provided at the top end of the airtightness device top cover, a sealing member being provided between the airtightness device body and the airtightness device top cover, a cover plate being sleeved on the top of the airtightness device top cover, an inner connecting plate being fixedly installed on the cover plate, an annular groove being provided on the inner connecting plate, a magnifying glass being inserted in the annular groove, the magnifying glass being located above the water area, and a flow hole being provided on the inner connecting plate.

[0006] As a further preferred embodiment of the present technical solution, a rubber pad is fixedly installed in the annular groove, and the rubber pad is tightly attached to the outer side of the magnifying glass.

[0007] As a further preferred embodiment of the present technical solution, the outer edge of the rubber pad is configured to be inclined, and the central portion of the inner connecting plate is configured to be hollow.

[0008] As a further preferred embodiment of the present technical solution, anti-slip strips are provided on the outer sides of the airtight device body and the airtight device top cover, and the anti-slip strips are distributed at equal distances on the airtight device body and the airtight device top cover.

[0009] As a further preferred embodiment of the present technical solution, the thread engaging the airtight device body and the airtight device top cover is a fine-pitch thread.

[0010] As a further preferred embodiment of the present technical solution, the sealing member includes an inner groove, which is opened on the inner wall of the airtight device body, a sealing ring is inserted into the inner groove, a card groove is opened at the bottom of the sealing ring, a card block is inserted into the card groove, and the card block is fixedly installed on the inner groove.

[0011] As a further preferred embodiment of the present technical solution, when the airtight device body and the airtight device top cover are not connected, the top of the sealing ring is higher than the top of the airtight device body.

[0012] The utility model provides an integrated cylindrical battery airtightness test device, which has the following beneficial effects:

[0013] The utility model places the cylindrical battery element inside the airtight device body, and as the airtight device body and the cylindrical battery element are engaged and connected, the bottom end of the cylindrical battery element can be gradually pierced by the ejector pin seat, thereby completing the punching of the cylindrical battery element. After that, a person adds an appropriate amount of water into the water area, and then puts the cover plate on the outside of the top cover of the airtight device so that the magnifying glass is above the water. Then, the person opens the nitrogen bottle and gradually inflates and pressurizes the interior of the cylindrical battery element until the inflation and pressurization reaches 1.3-1.6MPa, and maintains the pressure for 3-5 minutes. During this period, whether there are bubbles from the water inside the cylindrical battery element is observed. If there are no bubbles, it means that the airtightness is good. If there are bubbles, it means that the airtightness is poor. The magnifying glass provided can help the person to perform observation work.

[0014] The utility model is provided with a sealing member. As the sealing ring is confined in the inner groove, when the top cover of the airtight device is engaged and connected to the top of the airtight device body, the top cover of the airtight device can squeeze the sealing ring, so that personnel can add water into the interior of the water area, thereby further playing a sealing role, so as to facilitate the airtightness test of the cylindrical battery component and to prevent the sealing performance of the sealing ring from decreasing due to long-term use. The concave-convex fit between the card slot and the card block can facilitate personnel to disassemble and subsequently install the sealing ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic front view of the structure of the utility model;

[0016] Figure 2 This is a schematic front cross-sectional view of the structure of the present invention;

[0017] Figure 3 For this utility model Figure 2 A schematic diagram of the structure of the middle part;

[0018] Figure 4 For this utility model Figure 2 Schematic diagram of the enlarged structure of B.

[0019] In the figure: 1. Airtight device body; 2. Cylindrical battery component; 3. Airtight device top cover; 4. Ejector pin seat; 5. Water area; 6. Cover plate; 7. Internal plate; 8. Annular groove; 9. Magnifying glass; 10. Flow hole; 11. Rubber pad; 12. Anti-slip strip; 13. Inner groove; 14. Sealing ring; 15. Card slot; 16. Card block. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0021] The utility model provides a technical solution: Figure 1 、 Figure 2 and Figure 3As shown, in this embodiment, an integrated cylindrical battery airtightness testing device includes an airtight device body 1, a cylindrical battery component 2 is inserted into the interior of the airtight device body 1, and an airtight device top cover 3 is connected to the outside of the airtight device body 1 by threaded engagement. A thimble seat 4 is fixedly provided in the airtight device body 1, and the top of the thimble seat 4 is located in the interior of the cylindrical battery component 2. The cylindrical battery component 2 and the thimble seat 4 are communicated with each other. A water area 5 is provided at the top of the airtight device top cover 3, a seal is provided between the airtight device body 1 and the airtight device top cover 3, and a cover plate 6 is sleeved on the top of the airtight device top cover 3, and the cover plate 6 is fixed on An internal connecting plate 7 is fixedly installed, and an annular groove 8 is provided on the internal connecting plate 7. A magnifying glass 9 is inserted in the annular groove 8, and the magnifying glass 9 is located above the water area 5. A flow hole 10 is provided on the internal connecting plate 7. After the cylindrical battery component 2 is placed inside the airtight device body 1, as the airtight device body 1 and the cylindrical battery component 2 are engaged and connected, the bottom end of the cylindrical battery component 2 can be gradually pierced by the ejector seat 4, thereby completing the punching work of the cylindrical battery component 2. After that, a proper amount of water is added to the water area 5, and then the cover plate 6 is sleeved on the outside of the top cover 3 of the airtight device, so that the magnifying glass 9 is located above the water, and the personnel then open the nitrogen cylinder. Gradually inflate and pressurize the inside of the cylindrical battery part 2 until the inflation and pressurization reaches 1.3-1.6 MPa, and maintain the pressure for 3-5 minutes. During the observation period, whether there are bubbles from the water inside the cylindrical battery part 2, if there are no bubbles, it means that the air tightness is good, if bubbles appear, it means that the air tightness is poor, and the provision of a magnifying glass 9 can help personnel to observe. A rubber pad 11 is fixedly installed in the annular groove 8, and the rubber pad 11 is tightly attached to the outer side of the magnifying glass 9. The outer edge of the rubber pad 11 is set to an inclined shape, and the center part of the internal plate 7 is set to a hollow shape. The provision of the rubber pad 11 allows the magnifying glass 9 to be stably in the annular groove. 8, and the inclined shape is provided, which helps the magnifying glass 9 to be smoothly fitted on the rubber pad 11, and the hollow shape is provided, which makes it easy for personnel to push the magnifying glass 9 out of the rubber pad 11 for replacement. The outer sides of the airtight device body 1 and the airtight device top cover 3 are provided with anti-slip strips 12, and the anti-slip strips 12 are equidistantly distributed on the airtight device body 1 and the airtight device top cover 3. The anti-slip strips 12 are provided to help personnel to rotate the airtight device body 1 and the airtight device top cover 3. The thread engaged between the airtight device body 1 and the airtight device top cover 3 is a fine-thread thread, which can have better self-locking properties.

[0022] like Figure 2 and Figure 4As shown, the sealing member includes an inner groove 13, the inner groove 13 is opened on the inner wall of the airtight device body 1, a sealing ring 14 is inserted in the inner groove 13, a card groove 15 is opened at the bottom of the sealing ring 14, a card block 16 is inserted in the card groove 15, and the card block 16 is fixedly installed on the inner groove 13. When the airtight device body 1 and the airtight device top cover 3 are not connected, the top of the sealing ring 14 is higher than the top of the airtight device body 1. By providing the sealing member, as the sealing ring 14 is restricted to Inside the inner groove 13, when the airtight device top cover 3 is engaged and connected to the top of the airtight device body 1, the airtight device top cover 3 can squeeze the sealing ring 14, so that personnel can add water into the interior of the water area 5, thereby further playing a sealing role, so as to facilitate the airtightness test of the cylindrical battery component 2, and to prevent the sealing ring 14 from being degraded due to long-term use. The concave and convex fit between the slot 15 and the block 16 can facilitate personnel to disassemble and subsequently install the sealing ring 14.

[0023] The utility model provides an integrated cylindrical battery air tightness test device, the specific working principle is as follows:

[0024] When the device is in use, the cylindrical battery component 2 is placed inside the airtight device body 1, and then the airtight device top cover 3 and the airtight device body 1 are engaged and connected, so that the bottom end of the cylindrical battery component 2 can be gradually pierced by the thimble seat 4. When the airtight device top cover 3 is fully engaged with the airtight device body 1, the top end of the sealing ring 14 is tightly attached to the inner side of the airtight device top cover 3. Then, personnel add an appropriate amount of water to the water area 5, and then put the cover plate 6 on the outer side of the airtight device top cover 3, so that the magnifying glass 9 is above the water. Then, personnel open the nitrogen bottle and gradually inflate and pressurize the interior of the cylindrical battery component 2 until the inflation and pressurization reaches 1.3~1.6MPa, and maintain the pressure for 3min~5min. The period of observation from the water inside the cylindrical battery component 2 is observed. Whether there are bubbles in the airtightness, if there are no bubbles, it means that the airtightness is good, if bubbles appear, it means that the airtightness is poor, and the magnifying glass 9 provided can help personnel to observe. As the sealing ring 14 is confined to the inside of the inner groove 13, when the airtight device top cover 3 is engaged and connected to the top of the airtight device body 1, the airtight device top cover 3 can squeeze the sealing ring 14, so that personnel can add water to the inside of the water area 5, thereby further playing a sealing role, so as to facilitate the airtightness test of the cylindrical battery part 2, and to prevent the sealing of the sealing ring 14 from decreasing due to long-term use, the concave-convex fit between the slot 15 and the block 16 can facilitate personnel to disassemble and subsequently install the sealing ring 14.

[0025] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An integrated cylindrical battery airtightness test device, characterized by: The invention comprises an airtight device body (1), wherein a cylindrical battery component (2) is inserted into the interior of the airtight device body (1), and an airtight device top cover (3) is connected to the outside of the airtight device body (1) through threaded engagement, and an ejector pin seat (4) is fixedly provided in the airtight device body (1), and the top end of the ejector pin seat (4) is located in the interior of the cylindrical battery component (2), and the cylindrical battery component (2) and the ejector pin seat (4) are connected, and the top end of the airtight device top cover (3) is provided with a The invention relates to a water area (5), a sealing member is provided between the airtight device body (1) and the airtight device top cover (3), a cover plate (6) is sleeved on the top of the airtight device top cover (3), an inner plate (7) is fixedly mounted on the cover plate (6), an annular groove (8) is provided on the inner plate (7), a magnifying glass (9) is inserted into the annular groove (8), the magnifying glass (9) is located above the water area (5), and a circulation hole (10) is provided on the inner plate (7).

2. The integrated cylindrical battery airtightness testing device according to claim 1, characterized in that: A rubber pad (11) is fixedly installed in the annular groove (8), and the rubber pad (11) is tightly attached to the outer side of the magnifying glass (9).

3. The integrated cylindrical battery airtightness testing device according to claim 2, characterized in that: The outer edge of the rubber pad (11) is configured to be inclined, and the center of the inner connecting plate (7) is configured to be hollow.

4. The integrated cylindrical battery airtightness testing device according to claim 1, characterized in that: Anti-slip strips (12) are provided on the outer sides of the airtight device body (1) and the airtight device top cover (3), and the anti-slip strips (12) are distributed at equal distances on the airtight device body (1) and the airtight device top cover (3).

5. The integrated cylindrical battery airtightness testing device according to claim 1, characterized in that: The thread engaged between the airtight device body (1) and the airtight device top cover (3) is a fine-pitch thread.

6. The integrated cylindrical battery airtightness testing device according to claim 1, characterized in that: The sealing member comprises an inner groove (13), the inner groove (13) being provided on the inner wall of the airtight device body (1), a sealing ring (14) being inserted into the inner groove (13), a clamping groove (15) being provided at the bottom of the sealing ring (14), a clamping block (16) being inserted into the clamping groove (15), and the clamping block (16) being fixedly mounted on the inner groove (13).

7. The integrated cylindrical battery airtightness testing device according to claim 6, characterized in that: When the airtight device body (1) and the airtight device top cover (3) are not connected, the top of the sealing ring (14) is higher than the top of the airtight device body (1).

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