Liquid receiving device of lithium battery liquid injection machine

Abstract

The invention provides a liquid receiving device of a lithium battery liquid injection machine, and relates to the technical field of battery liquid injection, the liquid receiving device comprises a liquid injection platform and a liquid receiving platform, a liquid injection needle penetrating to the lower surface of the liquid injection platform is installed on the liquid injection platform, and the liquid receiving platform is located under the liquid injection platform and can move to enable the liquid injection needle of the liquid injection platform to directly face the ground. The liquid injection platform is connected with a driving mechanism capable of driving the liquid receiving platform to move; the dripping electrolyte is collected through the liquid receiving platform, the phenomena of corrosion and difficult cleaning caused by the electrolyte falling onto the platform or the battery can be prevented, the liquid receiving platform can translate relative to the liquid injection platform to change the position, the liquid injection needle can be prevented from being hindered, the electrolyte on the liquid receiving platform can be prevented from being scattered, and the cleaning efficiency is improved. The safety and stability effects are improved.

Description

Technical Field

[0001] The invention relates to the technical field of lithium battery liquid injection, and in particular to a liquid receiving device for a lithium battery liquid injection machine. Background Art

[0002] Electrolyte is an important component responsible for carrying lithium ions in lithium batteries. It plays a dual role as a carrier and conductor for the movement of lithium ions, and is a necessary condition for realizing charge transfer. In the production of lithium batteries, the electrolyte is injected into the injection port of the lithium battery through an injection device. A certain amount of electrolyte is likely to remain on the injection needle of the injection device. After the injection is completed, when the injection device is separated from the lithium battery, the electrolyte on the injection needle may fall on the lithium battery, causing surface damage to the lithium battery, or drip onto the platform supporting the lithium battery, causing corrosion on the platform and difficulty in cleaning. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a liquid receiving device for a lithium battery filling machine to solve the problem that the electrolyte on the surface of the filling needle of the filling device may fall down, causing platform corrosion or difficulty in cleaning.

[0004] Based on the technical problems existing in the background technology, the present invention proposes a liquid receiving device for a lithium battery filling machine, including a liquid filling platform and a liquid receiving platform, the liquid filling platform is equipped with a liquid filling needle penetrating through the lower surface of the liquid filling platform, the liquid receiving platform is located directly below the liquid filling platform and can be displaced so that the liquid filling needle of the liquid filling platform is directly facing the ground, and the liquid filling platform is connected to a driving mechanism that can drive the liquid receiving platform to move.

[0005] In the above scheme, the driving mechanism can drive the liquid receiving platform to translate relative to the liquid injection platform. The liquid receiving platform can be located below the liquid injection platform to receive the electrolyte, thereby preventing the electrolyte from dripping onto the platform or the battery and causing corrosion. The liquid receiving platform can translate to the side of the liquid injection platform, thereby preventing the liquid receiving platform from obstructing the injection needle from injecting liquid during injection.

[0006] Preferably, both ends of the liquid receiving platform and the liquid injection platform are hinged by multiple groups of connecting pieces, and the liquid receiving platform and the liquid injection platform move in a parallelogram formed by the connecting pieces.

[0007] In the above scheme, since the liquid receiving platform and the liquid injection platform are in a parallelogram design, when the liquid receiving platform moves, it can translate to the side and also move upward to a certain extent, so that the lower end of the injection needle can be in the lowest position, which can avoid obstructing the work of the injection needle. At the same time, the liquid receiving platform in the present application can also avoid flipping over and prevent the electrolyte from dumping.

[0008] Preferably, a C-shaped member (6) is installed on the liquid injection platform (1) and the opening of the C-shaped member (6) faces upward, and the two ends of the C-shaped member (6) are movably connected to a first rotating arm (7) and a second rotating arm (8), respectively. The first rotating arm (7) and the second rotating arm (8) are hinged to each other, and the end of the second rotating arm (8) away from the first rotating arm (7) is hinged to a pull rod (9), and the end of the pull rod (9) away from the second rotating arm (8) is hinged to a connecting seat (10), and the connecting seat (10) is fixedly connected to the side of the liquid receiving platform (2).

[0009] In the above scheme, the C-shaped member provides support for the two rotating arms, the first rotating arm and the second rotating arm can cooperate with each other, and the first rotating arm can drive the second rotating arm to rotate and slide after rotating relative to the C-shaped member, so that the liquid receiving platform can achieve the above-mentioned moving state.

[0010] Preferably, a strip-shaped second slide groove (81) is provided in the middle of the second rotating arm (8), a slide rod (61) is provided at the end of the C-shaped member (6) and is located in the second slide groove (81), and the second rotating arm (8) can rotate and slide relative to the end of the C-shaped member (6).

[0011] In the above scheme, the second sliding groove provided on the second rotating arm can slide relative to one end of the C-shaped member and can also rotate at the same time, so that the first rotating arm can only rotate on the C-shaped member, thereby improving the stability of the overall operation.

[0012] Preferably, the middle portion of the first rotating arm is rotatably connected to an end of the C-shaped member away from the second rotating arm.

[0013] In the above solution, the rotational connection between the first rotating arm and the C-shaped member can enable the first rotating arm to achieve a lever effect, so that the first rotating arm can drive the second rotating arm to operate.

[0014] Preferably, a first strip-shaped slide groove is provided at one end of the first rotating arm away from the second rotating arm, and a frame is connected to one end of the driving mechanism away from the liquid injection platform, and the frame is connected to a rod body, and the rod body is located in the second slide groove.

[0015] In the above solution, the first sliding groove provided on the first rotating arm is used for connecting the driving mechanism, and the driving mechanism is longitudinally driven so that the driving direction of the driving mechanism always remains vertical.

[0016] Preferably, the liquid receiving platform is provided with a liquid receiving groove with an opening facing upward.

[0017] In the above solution, the liquid receiving tank on the liquid receiving platform is used to receive the electrolyte dripping from the injection needle.

[0018] Preferably, when the liquid receiving platform is offset relative to the liquid injection platform, the lower end of the liquid injection needle is lower than the lower end of the liquid receiving platform.

[0019] In the above solution, when the liquid injection needle is inserted into the liquid injection port of the battery cell, a certain length is required, and the liquid receiving platform needs to avoid hindering the insertion of the liquid injection needle into the liquid injection port of the battery cell.

[0020] Compared with the prior art, the liquid receiving device of a lithium battery injection machine proposed by the present invention adopts the above technical solution, and achieves the following technical effects:

[0021] The present invention collects the dripping electrolyte through the liquid receiving platform, which can prevent the electrolyte from falling on the platform or the battery, causing corrosion and difficult cleaning. The liquid receiving platform can translate relative to the liquid injection platform to change its position, which can avoid hindering the liquid injection needle and prevent the electrolyte on the liquid receiving platform from spilling, improving the safety and stability effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure after the movement of the liquid receiving platform of the present invention.

[0023] In the figure: 1. Liquid injection platform; 2. Liquid receiving platform; 3. Liquid injection needle; 4. Driving mechanism; 5. Connecting piece; 6. C-shaped piece; 7. First rotating arm; 8. Second rotating arm; 9. Pull rod; 10. Connecting seat; 71. First sliding groove; 81. Second sliding groove; 41. Frame body; 42. Rod body; 21. Liquid receiving groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] In the present invention, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection or communication with each other; it can be directly connected, or indirectly connected through an intermediate medium. It can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0025] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0026] Embodiment

[0027] Please refer to Figure 1, the present invention provides a liquid receiving device for a lithium battery injection machine, which includes an injection platform 1 and a liquid receiving platform 2. An injection needle 3 penetrating through the lower surface of the injection platform 1 is installed on the injection platform 1. The liquid receiving platform 2 is located directly below the injection platform 1 and can be displaced so that the injection needle 3 of the injection platform 1 directly faces the ground. A driving mechanism 4 for driving the displacement of the liquid receiving platform 2 is connected to the injection platform 1; in this solution, during injection, the driving mechanism 4 will drive the injection platform 1 to move, and the liquid receiving platform 2 always moves with its upper surface facing up, so that the injection needle 3 can inject liquid downward, and the lowest end of the injection needle 3 is lower than the lowest end of the liquid receiving platform 2. During the injection process, the injection needle 3 can be inserted into the injection port of the battery cell for injection work.

[0028] In a specific embodiment, referring to Figure 1 , both ends of the liquid receiving platform 2 and the injection platform 1 are hinged by multiple groups of connecting pieces 5. The liquid receiving platform 2 and the injection platform 1 form a parallelogram movement through the connecting pieces 5; in this solution, two connecting pieces 5 are provided at both ends of the liquid receiving platform 2, and the lengths and shapes of the connecting pieces 5 are the same. During installation, both ends of the liquid receiving platform 2 and the injection platform 1 form a parallelogram connection. When the liquid receiving platform 2 swings relative to the injection platform 1, it can always keep the upper side facing up, which can prevent the liquid receiving platform 2 from flipping and causing the electrolyte to pour; a liquid receiving groove 21 with an upward opening is provided above the liquid receiving platform 2. The liquid receiving groove 21 is used to collect the dripping electrolyte, and the liquid receiving groove 21 can be set as a detachable liquid receiving basin, which can further facilitate personnel to handle the dripping electrolyte; further, when the liquid receiving platform 2 moves relative to the injection platform 1, it can move along an arc track relative to the injection platform 1 and keep the liquid receiving platform 2 always facing up, increasing the overall stability, and at the same time providing space for the injection needle 3 to insert into the battery cell opening.

[0029] In a specific embodiment, referring to Figure 1 , a C-shaped member 6 is installed on the injection platform 1 and the opening of the C-shaped member 6 faces up. The two ends of the C-shaped member 6 are respectively movably connected with a first rotating arm 7 and a second rotating arm 8. The first rotating arm 7 and the second rotating arm 8 are hinged to each other. One end of the second rotating arm 8 far from the first rotating arm 7 is hinged with a pull rod 9, and one end of the pull rod 9 far from the second rotating arm 8 is hinged with a connecting seat 10. The connecting seat 10 is fixedly connected to the side of the liquid receiving platform 2; in this solution, the heights of the two ends of the C-shaped member 6 relative to the upper surface of the injection platform 1 are equal. The first rotating arm 7 and the second rotating arm 8 can transfer the pulling force. When one end of the first rotating arm 7 far from the second rotating arm 8 moves downward, the hinge joint between the first rotating arm 7 and the second rotating arm 8 will move upward. The second rotating arm 8 will pull the pull rod 9 and then pull the liquid receiving platform 2 to move the liquid receiving platform 2 away from directly below the injection platform 1. Conversely, it will move to directly below the injection platform 1.

[0030] In a specific embodiment, referring to Figure 1, a strip-shaped second sliding groove 81 is provided in the middle of the second rotating arm 8. A sliding rod is provided at the end of the C-shaped member 6 and is located in the second sliding groove 81. The second rotating arm 8 can rotate and slide relative to the end of the C-shaped member 6. In this solution, the sliding groove of the second rotating arm 8 provides space for the movement of the second rotating arm 8. When the second rotating arm 8 rotates relative to the C-shaped member 6, due to the position limitation, it needs to slide relative to the C-shaped member 6 to rotate smoothly, so that the second rotating arm 8 can rotate smoothly.

[0031] In a specific embodiment, refer to Figure 1 , the middle of the first rotating arm 7 is rotatably connected to the end of the C-shaped member 6 away from the second rotating arm 8. A strip-shaped first sliding groove 71 is provided at the end of the first rotating arm 7 away from the second rotating arm 8. One end of the driving mechanism 4 away from the liquid injection platform 1 is connected with a frame body 41, and a rod body 42 is connected to the frame body 41. The rod body 42 is located in the first sliding groove 71. In this solution, since the driving direction of the driving mechanism 4 is the vertical direction, when the first rotating arm 7 rotates, the moving point between the driving mechanism 4 and the rotating arm will change. The first sliding groove 71 can always cope with this change, so that the connection point between the driving mechanism 4 and the first rotating arm 7 changes with the operation of the driving mechanism 4.

[0032] In a specific embodiment, refer to Figure 1 , when the liquid receiving platform 2 is offset relative to the liquid injection platform 1, the lower end of the liquid injection needle 3 is lower than the lower end of the liquid receiving platform 2. In this solution, the liquid injection platform 1 needs to avoid the longitudinal space of the liquid injection needle 3 from being blocked, so as to prevent the liquid injection needle 3 from being blocked when injecting liquid into the liquid injection port of the battery cell.

[0033] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A liquid receiving device for a lithium battery filling machine, characterized in that: The invention comprises a liquid injection platform (1) and a liquid receiving platform (2); the liquid injection platform (1) is provided with a liquid injection needle (3) penetrating the lower surface of the liquid injection platform (1); the liquid receiving platform (2) is located directly below the liquid injection platform (1) and can be displaced so that the liquid injection needle (3) of the liquid injection platform (1) is directly directed toward the ground; and the liquid injection platform (1) is connected with a driving mechanism (4) capable of driving the liquid receiving platform (2) to be displaced.

2. The liquid receiving device for a lithium battery filling machine according to claim 1, characterized in that: Both ends of the liquid receiving platform (2) and the liquid injection platform (1) are hinged via multiple groups of connecting pieces (5), and the liquid receiving platform (2) and the liquid injection platform (1) move in a parallelogram formed by the connecting pieces (5).

3. The liquid receiving device for a lithium battery filling machine according to claim 1, characterized in that: A C-shaped member (6) is installed on the liquid injection platform (1) and the opening of the C-shaped member (6) faces upward. The two ends of the C-shaped member (6) are movably connected to a first rotating arm (7) and a second rotating arm (8). The first rotating arm (7) and the second rotating arm (8) are hinged to each other. The end of the second rotating arm (8) away from the first rotating arm (7) is hinged to a pull rod (9). The end of the pull rod (9) away from the second rotating arm (8) is hinged to a connecting seat (10). The connecting seat (10) is fixedly connected to the side of the liquid receiving platform (2).

4. The liquid receiving device for a lithium battery liquid filling machine according to claim 3, characterized in that: A strip-shaped second slide groove (81) is arranged in the middle of the second rotating arm (8), a slide rod (61) is arranged at the end of the C-shaped member (6) and is located in the second slide groove (81), and the second rotating arm (8) can rotate and slide relative to the end of the C-shaped member (6).

5. The liquid receiving device for a lithium battery liquid filling machine according to claim 3, characterized in that: The middle portion of the first rotating arm (7) is rotatably connected to an end of the C-shaped member (6) away from the second rotating arm (8).

6. The liquid receiving device for a lithium battery liquid filling machine according to claim 4, characterized in that: A first strip-shaped slide groove (71) is provided at one end of the first rotating arm (7) away from the second rotating arm (8), and a frame (41) is connected to one end of the driving mechanism (4) away from the liquid injection platform (1). The frame (41) is connected to a rod (42), and the rod (42) is located in the first slide groove (71).

7. The liquid receiving device for a lithium battery filling machine according to claim 1, characterized in that: The liquid receiving platform (2) is provided with a liquid receiving tank (21) with an opening facing upward.

8. The liquid receiving device for a lithium battery liquid filling machine according to claim 1, characterized in that: When the liquid receiving platform (2) is offset relative to the liquid injection platform (1), the lower end of the liquid injection needle (3) is lower than the lower end of the liquid receiving platform (2).

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