Adjustable liquid injection port sealing device

Abstract

The utility model relates to the technical field of lithium batteries, and discloses an adjustable liquid injection port sealing device which comprises a first metal aluminum disc, the bottom of the first metal aluminum disc is rotatably connected with a rubber disc, and the bottom of the rubber disc is fixedly connected with a second metal aluminum disc. The bottom of the second metal aluminum disc is fixedly connected with three elastic pieces, the three elastic pieces are fixedly connected to the bottom of the second metal aluminum disc and are annularly distributed, the angle distance between every two elastic pieces is 80 degrees, and elastic force is provided through the three elastic pieces. The rubber discs are arranged on the first metal aluminum disc and the second metal aluminum disc, so that the rubber discs are well attached to the bottom of the cover plate, good sealing performance is achieved, the first metal aluminum disc, the rubber discs and the second metal aluminum disc are provided with round holes, and the number of the round holes is three. The opening and closing of the uppermost small hole or the mode that the whole sealing device moves downwards to expose the large hole diameter are controlled, and the effects of liquid injection, exhaust, sealing and the like are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium batteries, in particular to an adjustable liquid injection port sealing device. Background Art

[0002] Lithium batteries are new high-energy batteries developed in the 20th century. They can be understood as batteries containing lithium (including metallic lithium, lithium alloys, lithium ions, and lithium polymers). They can be divided into lithium metal batteries (rarely produced and used) and lithium ion batteries (now used in large quantities). Due to their advantages such as high specific energy, high battery voltage, wide operating temperature range, and long storage life, they have been widely used in military and civilian electrical appliances, such as drones, electric vehicles, energy storage, and various types of electric tools. The industrial scale of new energy vehicles, energy storage, and other fields will maintain an exponential growth trend in the next few years, which will greatly stimulate the production demand for lithium ion batteries.

[0003] When in use, lithium-ion batteries need to be sealed with sealing nails or tapes after filling and when aging at high temperature. However, there are certain problems with the sealing of the tape. For example, under high temperature conditions or for a long time, the tape becomes loose, causing the electrolyte inside the battery to be further exposed to the air, causing battery performance and safety problems. When using sealing nails, workers need to add the step of using sealing nails, which reduces production efficiency and increases labor and material costs. Therefore, an adjustable filling port sealing device is proposed to solve the above-mentioned problems. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide an adjustable liquid injection port sealing device in view of the deficiencies in the above-mentioned prior art.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: an adjustable liquid injection port sealing device, comprising a first metal aluminum disc, the bottom of which is rotatably connected to a rubber disc, and the bottom of which is fixedly connected to a second metal aluminum disc.

[0006] Preferably, an elastic sheet is fixedly connected to the bottom of the second metal aluminum disc. The number of the elastic sheets is three. The three elastic sheets are fixedly connected to the bottom of the second metal aluminum disc and are distributed in a ring shape. The angular distance between any two of the three elastic sheets is eighty degrees. The three elastic sheets provide elastic force, so that the rubber disc fits well to the bottom of the cover plate, thereby achieving good sealing.

[0007] Preferably, the first metal aluminum disc, the rubber disc and the second metal aluminum disc are provided with three circular holes, which are distributed on one side of the first metal aluminum disc. The speed of liquid injection and exhaust can be controlled by controlling the opening and closing of the three circular holes.

[0008] Preferably, the second metal aluminum disc is consistent in size with the rubber disc, and the rubber disc is larger in size than the first metal aluminum disc.

[0009] Preferably, a sealing ring is fixedly connected to the rubber disc, a sealing pad is fixedly connected to the rubber disc, a mounting groove is provided on the rubber disc, and the mounting groove is provided to facilitate the connection of the rubber disc with other top components, the mounting groove is a threaded groove, and a card slot is provided on the rubber disc, and the rubber disc can be stably connected with other components through the mounting card slot.

[0010] Preferably, the rubber disc corresponds to the circular hole of the first metal aluminum disc.

[0011] The utility model adopts the above technical solution, which can bring the following beneficial effects:

[0012] 1. The adjustable liquid injection port sealing device controls the opening and closing of the small hole by rotating the uppermost metal aluminum disc through the cooperation among the first metal aluminum disc, the rubber disc, the second metal aluminum disc and the round hole, so as to play the role of liquid injection, exhaust and sealing.

[0013] 2. The adjustable liquid injection port sealing device can achieve sealing treatment at the other end when connected with other components through the cooperation between the sealing ring and the sealing gasket to prevent leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front view of the structure of the utility model;

[0015] Figure 2 It is a top view of the structure of the utility model;

[0016] Figure 3 It is a bottom view of the structure of the utility model.

[0017] In the figure: 1. first metal aluminum disc; 2. rubber disc; 3. second metal aluminum disc; 4. elastic sheet; 5. round hole; 6. sealing ring; 7. sealing gasket; 8. mounting groove; 9. card slot. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-3An embodiment of the utility model is: an adjustable liquid injection port sealing device, comprising a first metal aluminum disc 1, a rubber disc 2 is rotatably connected to the bottom of the first metal aluminum disc 1, a second metal aluminum disc 3 is fixedly connected to the bottom of the rubber disc 2, an elastic sheet 4 is fixedly connected to the bottom of the second metal aluminum disc 3, the number of the elastic sheets 4 is three, the three elastic sheets 4 are fixedly connected to the bottom of the second metal aluminum disc 3 and are distributed in an annular shape, the angle distance between the three elastic sheets 4 is eighty degrees, the elastic force provided by the three elastic sheets 4 makes the rubber disc 2 fit the bottom of the cover well, and has a good sealing performance, the first metal aluminum disc 1, the rubber disc 2, and the second metal aluminum disc 3 are provided with a circular hole 5, the circular hole 5 The number of the first metal aluminum disc 1 is three, and the three circular holes 5 are distributed on one side of the first metal aluminum disc 1. The speed of liquid injection and exhaust can be controlled by controlling the opening and closing of the three circular holes 5. The second metal aluminum disc 3 is consistent with the size of the rubber disc 2, and the size of the rubber disc 2 is larger than the first metal aluminum disc 1. A sealing ring 6 is fixedly connected to the rubber disc 2, and a sealing gasket 7 is fixedly connected to the rubber disc 2. An installation groove 8 is provided on the rubber disc 2. The installation groove 8 is convenient for the rubber disc 2 to be connected with other top components. The installation groove 8 is a threaded groove. A card slot 9 is provided on the rubber disc 2. The rubber disc 2 can be stably connected with other components by installing the card slot 9. The rubber disc 2 corresponds to the circular holes 5 of the first metal aluminum disc 1.

[0020] Working principle: When the battery cell needs to be baked, just rotate the top first metal aluminum disc 1, and the corresponding circular hole 5 will appear, so that a passage will appear inside and outside the battery cell, which is conducive to the evaporation of water from the inside of the battery cell. After the battery cell is baked, directly choose to rotate the top first metal aluminum disc 1 and close the corresponding circular hole 5, so as to avoid contact with the outside environment. When injecting liquid, you can rotate the top first metal aluminum disc 1 to expose the circular hole 5 for liquid injection; you can also press down the top first metal aluminum disc 1 to expose the large aperture of the circular hole 5 for liquid injection; if you need to increase the injection rate, both switches can be turned on. After the liquid is injected, it needs to be left at high temperature to make the entire sealing device move downward to expose the large aperture for liquid injection. When it is left at high temperature, it is necessary to use a sealing nail to seal the injection port. Our device only needs to rotate the top first metal aluminum disc 1 to cover its circular hole 5, which can play a good sealing role. After standing at high temperature, the battery contains gas inside. You only need to rotate the top first aluminum disc 1 to expose the round holes 5. The speed of gas release depends on the number of round holes 5 exposed. Alternatively, you can gently press the top first aluminum disc 1 to expose a larger aperture downward to release gas. The gas release rate depends on the strength and number of presses. During formation, you only need to rotate the top first aluminum disc 1 to expose the round holes 5, which is conducive to the smooth removal of gas produced by formation.

[0021] The utility model provides an adjustable liquid injection port sealing device. There are many methods and ways to implement the technical solution. The above is only the preferred implementation of the utility model. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model. These improvements and modifications should also be regarded as the protection scope of the utility model. All components not specified in this embodiment can be implemented by existing technologies.

Claims

1. An adjustable liquid injection port sealing device, comprising a first metal aluminum disc (1), characterized in that: The bottom of the first metal aluminum disc (1) is rotatably connected to a rubber disc (2), and the bottom of the rubber disc (2) is fixedly connected to a second metal aluminum disc (3).

2. The adjustable liquid injection port sealing device according to claim 1, characterized in that: An elastic sheet (4) is fixedly connected to the bottom of the second metal aluminum disc (3), the number of the elastic sheets (4) is three, the three elastic sheets (4) are fixedly connected to the bottom of the second metal aluminum disc (3) and are distributed in a ring shape, and the angular distance between any two of the three elastic sheets (4) is eighty degrees.

3. The adjustable liquid injection port sealing device according to claim 2, characterized in that: The first metal aluminum disc (1), the rubber disc (2) and the second metal aluminum disc (3) are provided with circular holes (5), the number of the circular holes (5) is three, and the three circular holes (5) are distributed on one side of the first metal aluminum disc (1).

4. The adjustable liquid injection port sealing device according to claim 3, characterized in that: The second metal aluminum disc (3) has the same size as the rubber disc (2), and the size of the rubber disc (2) is larger than the first metal aluminum disc (1).

5. The adjustable liquid injection port sealing device according to claim 4, characterized in that: A sealing ring (6) is fixedly connected to the rubber disc (2), a sealing pad (7) is fixedly connected to the rubber disc (2), a mounting groove (8) is provided on the rubber disc (2), the mounting groove (8) is a threaded groove, and a clamping groove (9) is provided on the rubber disc (2).

6. The adjustable liquid injection port sealing device according to claim 5, characterized in that: The rubber disc (2) corresponds to the circular hole (5) of the first metal aluminum disc (1).

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