Cylindrical battery liquid injection retainer cup

Abstract

The utility model provides a liquid injection retainer cup for a cylindrical battery, which comprises a cup body 2, an upper sealing ring 1 and a lower sealing ring 3, a containing cavity is enclosed by the cup body, the upper sealing ring 1 is arranged at an opening of the containing cavity at the upper end of the cup body to seal a cavity opening of the containing cavity, and the lower sealing ring 3 is arranged at the bottom end of the cup body to seal the cavity opening of the containing cavity. When the bottom of the cup body of the liquid injection retainer cup is connected with the battery shell, a closed structure is formed between the bottom of the liquid injection retainer cup and the battery shell; the lower sealing ring 3 is lengthened upwards along the inner wall of the liquid injection retainer cup, and the lengthened length of the lower sealing ring 3 is 80-90% of the height of the cup body. In the cylindrical battery liquid injection retainer cup structure provided by the utility model, the sealing ring at the bottom is lengthened and extends into the retainer cup, so that the sealing ring only needs to be taken out for cleaning during cleaning, the whole liquid injection retainer cup does not need to be soaked and cleaned, and the problem that the liquid injection retainer cup is difficult to clean in the prior art is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the field of battery manufacturing, and in particular relates to a cylindrical battery liquid injection sleeve cup. Background Art

[0002] The manufacturing process of cylindrical batteries is generally as follows: first, the positive and negative electrodes, separators, etc. are wound into cylindrical cells, the cells are placed in cylindrical steel shells, electrolyte is injected, and the shells are sealed after vacuum standing. In the process of injecting electrolyte, an injection cup is required. In the existing cylindrical battery injection cup structure, there is a gap between the sealing ring and the cup, and the electrolyte will enter the gap. For cleaning, the entire injection plate needs to be taken out and soaked for cleaning, and the cleaning process is cumbersome. Utility Model Content

[0003] In order to solve the problems existing in the prior art, the utility model provides the following technical solutions:

[0004] A cylindrical battery liquid filling cup, comprising a cup body 2, an upper sealing ring 1, and a lower sealing ring 3, wherein the cup body encloses a cavity, the upper sealing ring 1 is disposed at the opening of the cavity at the upper end of the cup body to seal the cavity opening, and the lower sealing ring 3 is disposed at the bottom end of the cup body, and when the bottom of the cup body of the liquid filling cup is connected to a battery housing, a closed structure is formed between the bottom of the liquid filling cup and the battery housing;

[0005] The lower sealing ring 3 is extended upward along the inner wall of the liquid injection sleeve cup, and the length of the lower sealing ring 3 extended upward is 80-90% of the height of the cup body.

[0006] Furthermore, a through hole 4 is provided at the bottom end of the cup body 2, and the electrolyte stored in the cup body is injected into the battery through the through hole 4 opened at the bottom of the cup body.

[0007] Furthermore, the bottom end of the cup body 2 is provided with two or more through holes.

[0008] Furthermore, the injection cup is also provided with an injection conduit, one end of which is connected to the through hole 4 at the bottom end of the cup body 2, and the other end of which extends into the interior of the battery housing.

[0009] Furthermore, the injection sleeve cup is also provided with an injection conduit, which is integrally formed with the cup body 2, and one end of the electrolyte conduit directly extends downward from the through hole 4 at the bottom end of the cup body 2 and is inserted into the battery housing.

[0010] Compared with the prior art, the advantages of the present invention are:

[0011] In the cylindrical battery liquid filling sleeve cup structure provided by the utility model, the bottom sealing ring is lengthened and extends to the inside of the sleeve cup. When cleaning, it is only necessary to take out the sealing ring for cleaning without soaking the entire sleeve for cleaning, which greatly improves the problem of difficult cleaning of the liquid filling sleeve cup in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The invention is a liquid injection cup structure in the prior art.

[0013] Figure 2 The utility model provides a liquid injection sleeve cup structure, wherein 1 is an upper sealing ring, 2 is a cup body, 3 is a lower sealing ring, and 4 is a through hole. DETAILED DESCRIPTION

[0014] The utility model mainly designs a cylindrical battery liquid filling cup. It includes a cup body 2, an upper sealing ring 1, and a lower sealing ring 3. The cavity enclosed by the cup body 2 is used to contain electrolyte. When in use, the bottom of the cup body is connected to the battery shell, and the electrolyte is injected into the battery through the through hole 4 opened at the bottom of the cup body. In order to ensure the liquid filling effect, the liquid filling cup also includes an upper sealing ring 1 and a lower sealing ring 3. When the bottom of the cup body of the liquid filling cup is connected to the battery shell, a certain pressure is applied to form a closed structure between the bottom of the liquid filling cup and the battery shell, thereby ensuring its liquid filling effect.

[0015] The prior art injection cup structure is as follows Figure 1 As shown, there is a gap between the lower sealing ring and the cup body. The electrolyte will enter the gap during buffering, causing residual electrolyte crystallization. The entire large plate needs to be removed for soaking and cleaning, which is inconvenient to operate and causes a waste of work time.

[0016] To solve this problem, this embodiment can adopt Figure 2 In the scheme shown, the lower sealing ring is extended upward along the inner wall of the injection sleeve cup, and the length of the lower sealing ring is 80-90% of the height of the cup body. During injection, the electrolyte will be stored in the inner circle of the sealing ring and will not contact the inside of the sleeve cup, thereby avoiding the possibility of the electrolyte entering the gap between the sealing ring and the sleeve cup. During subsequent maintenance and cleaning, it is only necessary to take out the entire lower sealing ring for cleaning, without removing the entire large plate for soaking, or directly replacing the sealing ring, thereby achieving the purpose of simple operation, saving work time, and facilitating cleaning.

[0017] Furthermore, a plurality of through holes may be provided at the bottom of the cup body, so that the electrolyte can flow into the battery housing from the plurality of through holes at the same time during injection, thereby accelerating the injection speed of the battery and improving the production efficiency of the battery.

[0018] Furthermore, the liquid injection cup is also provided with a liquid injection conduit, one end of which is connected to the through hole 4 at the bottom end of the cup body 2, and the other end of which extends into the interior of the battery housing.

[0019] Furthermore, the through hole at the bottom of the cup body can be provided with a liquid injection conduit extending downward, and the conduit is inserted into the bottom end inside the battery housing during liquid injection, so as to prevent splashing of electrolyte during liquid injection.

[0020] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited by the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principle of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A cylindrical battery filling cup, characterized in that: The invention comprises a cup body (2), an upper sealing ring (1), and a lower sealing ring (3); the cup body encloses a cavity; the upper sealing ring (1) is arranged at the opening of the cavity at the upper end of the cup body to seal the cavity opening; the lower sealing ring (3) is arranged at the bottom end of the cup body; when the bottom of the cup body of the injection sleeve cup is connected to the battery shell, a closed structure is formed between the bottom of the injection sleeve cup and the battery shell; the lower sealing ring (3) is extended upward along the inner wall of the injection sleeve cup, and the length of the lower sealing ring (3) extended upward is 80-90% of the height of the cup body.

2. The cylindrical battery liquid filling cup according to claim 1, characterized in that: The bottom end of the cup body (2) is provided with a through hole (4), and the electrolyte stored in the cup body is injected into the battery through the through hole (4) opened at the bottom of the cup body.

3. The cylindrical battery liquid filling cup according to claim 2, characterized in that: The bottom end of the cup body (2) is provided with two or more through holes.

4. The cylindrical battery liquid filling cup according to claim 2, characterized in that: The injection cup is also provided with an injection conduit, one end of which is connected to a through hole (4) at the bottom end of the cup body (2), and the other end of which extends into the interior of the battery housing.

5. The cylindrical battery liquid filling cup according to claim 2, characterized in that: The injection sleeve cup is also provided with an injection conduit, which is integrally formed with the cup body (2), and one end of the electrolyte conduit directly extends downward from the through hole (4) at the bottom end of the cup body (2) and is inserted into the interior of the battery housing.

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