Automatic airtightness detection device for lithium battery cap

Abstract

The utility model discloses a lithium battery cap automatic air tightness detection device comprising a pedestal, the left side of the top of the pedestal is fixedly connected with a vertical plate, the right side of the vertical plate is fixedly connected with a support block, the right side of the support block is fixedly connected with a sleeve, and the bottom of the sleeve is provided with an inflation inlet. According to the utility model, the pedestal, the vertical plate, the supporting block, the sleeve, the inflation inlet, the placing groove, the sealing ring, the lithium battery cap, the top plate, the electric push rod, the sealing cover, the pressing block, the gas pressure sensor, the alarm, the controller and the air pump cooperate with each other, so that the airtightness of the lithium battery cap can be rapidly and reliably detected before mass production; therefore, the situation that a large amount of economic loss is caused by unqualified air tightness of the lithium battery cap in the later period is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery accessory production equipment, in particular to an automatic airtightness detection device for lithium battery caps. Background Technique

[0002] A lithium battery is a primary battery with a lithium metal or lithium alloy as the negative electrode material and a non-aqueous electrolyte solution, which is different from rechargeable lithium-ion batteries and lithium-ion polymer batteries. Due to the very active chemical properties of lithium metal, the processing, storage, and use of lithium metal have very high requirements for the environment.

[0003] Currently, when detecting the airtightness of lithium battery caps, the industry generally does not detect the cap seal. The cap samples are sent to customers for testing, and if there is no liquid leakage, it is considered qualified, and then mass production is directly carried out. However, during subsequent mass production, due to changes in materials or processes, the airtightness of some batches may be unqualified and liquid leakage may occur, resulting in losses. Therefore, we propose an automatic airtightness detection device for lithium battery caps. Content of the Utility Model

[0004] The purpose of the utility model is to provide an automatic airtightness detection device for lithium battery caps to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: an automatic airtightness detection device for lithium battery caps, including a base, a vertical plate is fixedly connected to the left side of the top of the base, a support block is fixedly connected to the right side of the vertical plate, a sleeve is fixedly connected to the right side of the support block, an air inlet is opened at the bottom of the sleeve, a placement groove is opened at the top of the sleeve, the placement groove is in communication with the air inlet, a sealing ring is fixedly connected to the bottom of the inner wall of the placement groove, and a lithium battery cap is movably connected to the top of the sealing ring.

[0006] Further, the top of the lithium battery cap penetrates through the placement groove and extends to the outside of the placement groove, and the lithium battery cap is movably clamped with the placement groove.

[0007] Further, a top plate is fixedly connected to the top of the vertical plate, an electric push rod is fixedly connected to the top of the top plate, and the telescopic end of the electric push rod penetrates through the top plate and extends to the outside of the top plate and is fixedly connected to a sealing cover.

[0008] Further, the bottom of the sealing cover is in movable contact with the top of the sleeve, and two symmetrically arranged pressing blocks are fixedly connected to the top of the inner wall of the sealing cover.

[0009] Further, the bottom of the pressing block is in movable contact with the top of the lithium battery cap, the sealing cover and the pressing block are both made of rubber, and a gas pressure sensor is fixedly connected to the center of the top of the inner wall of the sealing cover.

[0010] Further, an alarm is fixedly installed at the top of the sealing cover, and a controller is installed on the front side of the vertical plate. The gas pressure sensor and the alarm are electrically connected to the controller respectively.

[0011] Further, a gas pump is fixedly connected to the top of the base corresponding to the position of the sleeve. An air delivery pipe is fixedly installed at the air outlet of the gas pump, and the top of the air delivery pipe penetrates through the inflation port and extends into the interior of the inflation port.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] Through the mutual cooperation of the base, vertical plate, support block, sleeve, inflation port, placement groove, sealing ring, lithium battery cap, top plate, electric push rod, sealing cover, pressing block, gas pressure sensor, alarm, controller and gas pump, the present utility model can quickly and reliably detect the airtightness of the lithium battery cap before mass production, thereby effectively avoiding the occurrence of a large amount of economic losses caused by unqualified airtightness of the lithium battery cap in the later stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a front view structural schematic diagram of the present utility model;

[0015] Figure 2 is a bottom view structural schematic diagram of the present utility model;

[0016] Figure 3 is a structural sectional view of the sealing cover of the present utility model;

[0017] Figure 4 is a top view structural schematic diagram of the sleeve of the present utility model.

[0018] In the figure: 1, base; 2, vertical plate; 3, support block; 4, sleeve; 5, inflation port; 6, placement groove; 7, sealing ring; 8, lithium battery cap; 9, top plate; 10, electric push rod; 11, sealing cover; 12, pressing block; 13, gas pressure sensor; 14, alarm; 15, controller; 16, gas pump. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0020] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "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 utility model 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. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0021] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" 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 utility model can be understood according to specific circumstances.

[0022] Please refer to Figures 1-4 , a device for automatically detecting the airtightness of a lithium battery cap, comprising a base 1. A vertical plate 2 is fixedly connected to the left side of the top of the base 1. A support block 3 is fixedly connected to the right side of the vertical plate 2. A sleeve 4 is fixedly connected to the right side of the support block 3. An air inlet 5 is provided at the bottom of the sleeve 4. A placement groove 6 is provided at the top of the sleeve 4. The placement groove 6 communicates with the air inlet 5. A sealing ring 7 is fixedly connected to the bottom of the inner wall of the placement groove 6. A lithium battery cap 8 is movably connected to the top of the sealing ring 7.

[0023] Specifically, the top of the lithium battery cap 8 penetrates through the placement groove 6 and extends to the outside of the placement groove 6. The lithium battery cap 8 is movably clamped with the placement groove 6.

[0024] During specific implementation, a top plate 9 is fixedly connected to the top of the vertical plate 2. An electric push rod 10 is fixedly connected to the top of the top plate 9. The telescopic end of the electric push rod 10 penetrates through the top plate 9 and extends to the outside of the top plate 9 and is fixedly connected to a sealing cover 11.

[0025] Specifically, the bottom of the sealing cover 11 is in movable contact with the top of the sleeve 4. Two symmetrically arranged pressing blocks 12 are fixedly connected to the top of the inner wall of the sealing cover 11.

[0026] During specific implementation, the bottom of the briquette 12 is in movable contact with the top of the lithium battery cap 8. Both the sealing cover 11 and the briquette 12 are made of rubber. At the center of the top of the inner wall of the sealing cover 11, a gas pressure sensor 13 is fixedly connected.

[0027] Specifically, an alarm 14 is fixedly installed on the top of the sealing cover 11, and a controller 15 is installed on the front side of the vertical plate 2. The gas pressure sensor 13 and the alarm 14 are electrically connected to the controller 15 respectively.

[0028] During specific implementation, at the position corresponding to the sleeve 4 on the top of the base 1, an air pump 16 is fixedly connected. At the air outlet of the air pump 16, an air delivery pipe is fixedly installed, and the top of the air delivery pipe penetrates through the inflation port 5 and extends into the interior of the inflation port 5.

[0029] In actual application: When it is necessary to detect the airtightness of the lithium battery cap 8, only need to drive the sealing cover 11 upward to an appropriate height through the electric push rod 10, then insert the lithium battery cap 8 into the placement groove 6, and then drive the sealing cover 11 and the briquette 12 downward to the limit position through the electric push rod 10, so that the bottom of the sealing cover 11 abuts against the top of the sleeve 4, and the briquette 12 presses the top of the lithium battery cap 8 tightly. Then start the air pump 16, and the air pump 16 continuously delivers air into the inflation port 5 through the air delivery pipe for 30 seconds. When the gas in the inflation port 5 passes through the lithium battery cap 8 and enters the interior of the sealing cover 11, the gas pressure sensor 13 in the sealing cover 11 will detect that the pressure in the sealing cover 11 has changed, and then send a signal to the controller 15. The controller 15 starts the alarm 14 to sound an alarm, thereby determining that the airtightness of the lithium battery cap 8 is unqualified. Similarly, if the airtightness of the lithium battery cap 8 is qualified, the alarm 14 will not sound an alarm. Through the above steps, the airtightness of the lithium battery cap 8 can be detected quickly and accurately.

[0030] All components in the present utility model are common standard parts or components known to those skilled in the art. Their structures and principles can all be known by those skilled in the art through technical manuals or through conventional experimental methods. At the same time, the standard parts used in this application document can all be purchased from the market. Each component in this application document can be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machines, parts, and equipment all adopt conventional models in the prior art.

[0031] Persons skilled in the art shall connect all the electrical components in this case to their adapted power supplies through wires, and appropriate controllers and encoders should be selected according to the actual situation to meet the control requirements. For the specific connection and control sequence, reference should be made to the working principle and the electrical connection should be completed according to the sequence of the electrical components working successively. The detailed connection means are well-known techniques in this field. This utility model mainly introduces the working principle and process and will not elaborate on the electrical control.

[0032] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A lithium battery cap automatic air tightness detection device, characterized in that: The invention comprises a base (1), wherein a vertical plate (2) is fixedly connected to the left side of the top of the base (1), a support block (3) is fixedly connected to the right side of the vertical plate (2), a sleeve (4) is fixedly connected to the right side of the support block (3), a gas charging port (5) is provided at the bottom of the sleeve (4), a placement groove (6) is provided at the top of the sleeve (4), the placement groove (6) and the gas charging port (5) are communicated with each other, a sealing ring (7) is fixedly connected to the bottom of the inner wall of the placement groove (6), and a lithium battery cap (8) is movably connected to the top of the sealing ring (7).

2. The automatic air tightness detection device for lithium battery cap according to claim 1, characterized in that: The top of the lithium battery cap (8) passes through the placement groove (6) and extends to the outside of the placement groove (6), and the lithium battery cap (8) is movably engaged with the placement groove (6).

3. The automatic air tightness detection device for lithium battery cap according to claim 2, characterized in that: The top of the vertical plate (2) is fixedly connected to a top plate (9), the top of the top plate (9) is fixedly connected to an electric push rod (10), the telescopic end of the electric push rod (10) passes through the top plate (9) and extends to the outside of the top plate (9) and is fixedly connected to a sealing cover (11).

4. The automatic air tightness detection device for lithium battery cap according to claim 3, characterized in that: The bottom of the sealing cover (11) is in active contact with the top of the sleeve (4), and the top of the inner wall of the sealing cover (11) is fixedly connected to two symmetrically arranged pressing blocks (12).

5. The automatic air tightness detection device for lithium battery cap according to claim 4, characterized in that: The bottom of the pressing block (12) is in active contact with the top of the lithium battery cap (8); the sealing cover (11) and the pressing block (12) are both made of rubber; and a gas pressure sensor (13) is fixedly connected to the top center of the inner wall of the sealing cover (11).

6. The automatic air tightness detection device for lithium battery cap according to claim 5, characterized in that: An alarm (14) is fixedly mounted on the top of the sealing cover (11), a controller (15) is mounted on the front side of the vertical plate (2), and the gas pressure sensor (13) and the alarm (14) are electrically connected to the controller (15) respectively.

7. The automatic air tightness detection device for lithium battery cap according to claim 6, characterized in that: An air pump (16) is fixedly connected to the top of the base (1) at a position corresponding to the sleeve (4), and an air pipe is fixedly installed at the air outlet of the air pump (16). The top of the air pipe passes through the inflation port (5) and extends to the interior of the inflation port (5).

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