A battery electrolyte injection device

Abstract

The utility model discloses a battery electrolyte injection device, including liquid injection pipe, liquid storage jar, elastic membrane, movable tube and delivery pipe, the liquid injection pipe vertical downward and top with liquid storage jar intercommunication, the lateral surface of liquid storage jar is equipped with the opening, the opening is equipped with the elastic membrane, the lateral surface of elastic membrane is provided with movable tube, the top of movable tube is rotatively connected on fixed part, the upper portion of movable tube is passed to the delivery pipe intercommunication with first hose, the lower extreme of movable tube is passed to the liquid storage jar intercommunication with second hose, the lateral surface of movable tube is equipped with the boss push rod for promoting elastic membrane, and the movable tube is inclined and the boss push rod is contacted with elastic membrane under natural state. The utility model provides a battery electrolyte injection device, and electrolyte is sucked back a distance after stopping liquid injection, prevents the electrolyte of liquid injection pipe mouth to have the adhesion, reduces the risk of environmental pollution and battery short circuit that easily drops in subsequent operation.

Description

Technical Field

[0001] This utility model relates to the field of battery production technology, and in particular to a battery electrolyte injection device. Background Technology

[0002] In battery manufacturing, especially in the production of lithium-ion batteries, electrolyte injection is a crucial step. Existing automated electrolyte injection equipment is prone to electrolyte dripping or residue during the injection process. This not only affects the cleanliness of the production environment but also poses a potential threat to battery quality. Specifically, after the injection process stops, electrolyte residue and gravity often leave electrolyte adhering to the injection nozzle. This electrolyte can easily drip during subsequent operations, causing environmental pollution and posing a risk of battery short circuits. Utility Model Content

[0003] In view of the above-mentioned prior art, the present invention provides a battery electrolyte injection device that draws the electrolyte back a certain distance after the injection is stopped, preventing electrolyte from adhering to the injection port and reducing the risk of dripping during subsequent operations, causing environmental pollution and battery short circuits.

[0004] To achieve the above objectives, the technical solution of this utility model embodiment is implemented as follows: A battery electrolyte injection device includes an injection pipe, a storage tank, an elastic membrane, a movable pipe, and a delivery pipe. The injection pipe is vertically downward and its top is connected to the storage tank. The storage tank has an opening on its side, and the elastic membrane is located in the opening. The movable pipe is located on the side of the elastic membrane. The top of the movable pipe is rotatably connected to a fixed member. The upper part of the movable pipe is connected to the delivery pipe through a first flexible hose, and the lower end of the movable pipe is connected to the storage tank through a second flexible hose. A push rod for pushing the elastic membrane is provided on the side of the movable pipe. In its natural state, the movable pipe is tilted and the push rod is in contact with the elastic membrane.

[0005] Furthermore, the injection tube includes an L-shaped tube and a vertical tube. The vertical tube contains the L-shaped tube. The outlet of the L-shaped tube is located inside the vertical tube, and the inlet is located outside the vertical tube. The outlet of the L-shaped tube is located at the center of the vertical tube, and the direction of the outlet is parallel to the axis of the vertical tube. The inlet of the L-shaped tube is connected to the second flexible tube.

[0006] Furthermore, the vertical pipe is provided with a reduced diameter section, and the outlet of the L-shaped pipe is provided with the reduced diameter section.

[0007] Furthermore, the upper end of the movable tube is provided with a water inlet connector, the water inlet connector is perpendicular to the movable tube, and the first flexible tube is connected to the water inlet connector.

[0008] Furthermore, the L-shaped tube is provided with a barbed connector, the lower end of the movable tube is bent in the horizontal direction, the second flexible tube is arc-shaped, the barbed connector is connected to the movable tube through the second flexible tube, and the outline of the second flexible tube is tangent to the barbed connector and the movable tube.

[0009] Furthermore, the bottom of the vertical tube is provided with an injection head, which has a conical structure.

[0010] Furthermore, the vertical tube is threadedly connected to the injection head.

[0011] The beneficial effects of this invention are as follows: When the injection stops, the electrolyte in each pipe stops flowing, the impact on the movable tube decreases, the movable tube loses its downward thrust, the elastic membrane resets under the action of elasticity, the volume in the storage tank increases, and the electrolyte in the injection pipe is drawn upward a short distance, preventing electrolyte from adhering to the pipe opening after the injection stops, and preventing electrolyte dripping. When the injection resumes, the liquid flow in the pipe squeezes the elastic membrane, squeezing out the electrolyte in the storage tank, which can improve the response speed of the re-injection. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a battery electrolyte injection device according to an embodiment of this application; Explanation of icon numbers: 1. Injection pipe; 2. Storage tank; 3. Elastic membrane; 4. Movable pipe; 5. Delivery pipe; 6. Opening; 7. Fixing component; 8. First hose; 9. Second hose; 10. Push rod; 11. L-shaped pipe; 12. Vertical pipe; 13. Reduction section; 14. Water inlet connector; 15. Bend connector; 16. Injection head. Detailed Implementation

[0013] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in this specification of this utility model is for the purpose of describing particular embodiments only and is not intended to limit the utility model. In the following description, the expression "some embodiments" refers to a subset of all possible embodiments; however, it should be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments and can be combined with each other without conflict.

[0014] It should also be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "inner," "outer," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0015] Example 1 Please refer to the attached document. Figure 1 This application provides a battery electrolyte injection device, including an injection pipe 1, a storage tank 2, an elastic membrane 3, a movable pipe 4, and a delivery pipe 5. The injection pipe 1 is vertically downward and its top is connected to the storage tank 2. The storage tank 2 has an opening 6 on its side, and the elastic membrane 3 is provided in the opening 6. When the elastic membrane 3 deforms inward, the volume of the storage tank 2 decreases, and when it deforms outward, the volume of the storage tank 2 increases. The movable pipe 4 is provided on the side of the elastic membrane 3. The top end of the movable pipe 4 is rotatably connected to a fixing member 7. The fixing member 7 is fixed in position relative to the storage tank 2. The fixing member 7 can be a fixing seat or a fixing rod, etc., and can be fixed to the ground or fixed to the storage tank 2. The upper part of the movable pipe 4 is connected to the delivery pipe 5 through a first flexible hose 8, and the lower end of the movable pipe 4 is connected to the storage tank 2 through a second flexible hose 9. The side of the movable pipe 4 is provided with a push rod 10 for pushing the elastic membrane 3. In its natural state, the movable pipe 4 is tilted and the push rod 10 is in contact with the elastic membrane 3. The battery electrolyte is delivered through the delivery pipe 5 to the first flexible tube 8, then through the first flexible tube 8 to the movable tube 4, and then through the second flexible tube 9 to the storage tank 2. Finally, it is discharged from the injection pipe 1 to inject electrolyte into the battery. The flowing electrolyte impacts the movable tube 4, causing it to swing downwards. The push rod 10 on the side of the movable tube 4 pushes the elastic diaphragm 3, causing it to deform inwards, thus reducing the volume in the storage tank 2. When injection stops, the electrolyte flow in each pipe ceases, the impact on the movable tube 4 decreases, and the movable tube 4 loses its downward thrust. The elastic diaphragm 3 returns to its original position under the action of elasticity, increasing the volume in the storage tank 2. This draws the electrolyte in the injection pipe 1 upwards a short distance, preventing electrolyte from adhering to the pipe opening after injection stops and preventing electrolyte dripping. When re-injecting, the liquid flow in the pipes squeezes the elastic diaphragm 3, expelling the electrolyte from the storage tank 2, thus improving the speed of re-injection.

[0016] Specifically, the injection pipe 1 includes an L-shaped pipe 11 and a vertical pipe 12. The L-shaped pipe 11 is housed inside the vertical pipe 12. The outlet of the L-shaped pipe is located inside the vertical pipe 12, the inlet is located outside the vertical pipe 12, and the outlet is located at the center of the vertical pipe 12, with the outlet direction parallel to the axial direction of the vertical pipe 12. The inlet of the L-shaped pipe is connected to the second flexible hose 9. Electrolyte enters from the inlet of the L-shaped pipe 11 and then exits from the outlet into the vertical pipe 12. The electrolyte flow tends to drive the electrolyte in the vertical pipe 12 downwards, thereby replenishing the electrolyte in the upper part of the vertical pipe 12 by flowing downwards, promoting a decrease in pressure within the vertical pipe 12 and the storage tank 2, and causing the electrolyte to be discharged from the storage tank 2. When the electrolyte injection stops, the flow of the electrolyte ceases, and the pressure change caused by the flow disappears. The pressure recovery in the storage tank 2 draws the electrolyte upwards from the vertical pipe 12, promoting electrolyte backflow a short distance. This prevents electrolyte from adhering to the opening of the injection pipe 1 after injection stops, thus preventing electrolyte dripping. During re-injection, the negative pressure promotes the discharge of electrolyte from the storage tank 2, improving the re-injection speed.

[0017] Specifically, the vertical pipe 12 is provided with a reduced diameter section 13, and the outlet of the L-shaped pipe is also provided with the reduced diameter section 13. The smaller cross-sectional area results in a higher flow velocity, while the higher flow velocity leads to lower pressure, further widening the pressure difference between the flowing and stationary states, thus promoting electrolyte backflow when injection stops.

[0018] Specifically, the upper end of the movable tube 4 is provided with a water inlet connector 14, which is perpendicular to the movable tube 4. The first flexible tube 8 is connected to the water inlet connector 14. This facilitates the connection of the first flexible tube 8, and when the electrolyte enters from the first flexible tube 8, it vertically impacts the movable tube 4, thereby promoting the downward swing of the movable tube 4 to squeeze the elastic membrane 3.

[0019] Example 2 Please refer to the attached document. Figure 1 The difference between this embodiment and Embodiment 1 is that the lower end of the movable tube 4 is bent into a horizontal joint 15, the second flexible tube 9 is arc-shaped, the bent joint 15 is connected to the L-shaped tube 11 through the second flexible tube 9, and the outline of the second flexible tube 9 is tangent to the bent joint 15 and the L-shaped tube 11. This reduces the impact of the electrolyte on the second flexible tube 9 during flow, and allows the movable tube 4 to rotate stably during electrolyte flow, facilitating the oscillation of the movable tube 4 to deform the elastic membrane 3.

[0020] Specifically, the bottom of the vertical tube 12 is provided with an injection head 16, which has a conical structure. This facilitates alignment with the battery's injection port and makes operation convenient.

[0021] Specifically, the vertical pipe 12 is threadedly connected to the injection head 16. This facilitates the installation and maintenance of the injection pipe 1.

[0022] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. The protection scope of this utility model should be determined by the protection scope of the stated claims.

Claims

1. A battery electrolyte injection device, characterized in that, The device includes an injection tube (1), a storage tank (2), an elastic membrane (3), a movable tube (4), and a delivery tube (5). The injection tube (1) is vertically downward and its top is connected to the storage tank (2). The storage tank (2) has an opening (6) on its side, and the elastic membrane (3) is located in the opening (6). The movable tube (4) is located on the side of the elastic membrane (3). The top of the movable tube (4) is rotatably connected to a fixing member (7). The upper part of the movable tube (4) is connected to the delivery tube (5) through a first flexible hose (8). The lower end of the movable tube (4) is connected to the storage tank (2) through a second flexible hose (9). The side of the movable tube (4) is provided with a push rod (10) for pushing the elastic membrane (3). In its natural state, the movable tube (4) is tilted and the push rod (10) is in contact with the elastic membrane (3).

2. The battery electrolyte injection device according to claim 1, characterized in that, The injection tube (1) includes an L-shaped tube (11) and a vertical tube (12). The vertical tube (12) contains the L-shaped tube (11). The outlet of the L-shaped tube (11) is located inside the vertical tube (12), and the inlet is located outside the vertical tube (12). The outlet of the L-shaped tube (11) is located at the center of the vertical tube (12), and the direction of the outlet is parallel to the axis of the vertical tube (12). The inlet of the L-shaped tube (11) is connected to the second flexible tube (9).

3. The battery electrolyte injection device according to claim 2, characterized in that, The vertical pipe (12) is provided with a reduced diameter section (13), and the outlet of the L-shaped pipe (11) is provided with the reduced diameter section (13).

4. The battery electrolyte injection device according to claim 1, characterized in that, The upper end of the movable tube (4) is provided with a water inlet connector (14), the water inlet connector (14) is perpendicular to the movable tube (4), and the first hose (8) is connected to the water inlet connector (14).

5. The battery electrolyte injection device according to claim 2, characterized in that, The lower end of the movable tube (4) is bent into a horizontal joint (15). The second flexible tube (9) is arc-shaped. The bent joint (15) is connected to the L-shaped tube (11) through the second flexible tube (9). The outline of the second flexible tube (9) is tangent to the bent joint (15) and the L-shaped tube (11).

6. The battery electrolyte injection device according to claim 2, characterized in that, The bottom of the vertical tube (12) is provided with an injection head (16), which has a conical structure.

7. The battery electrolyte injection device according to claim 6, characterized in that, The vertical tube (12) is threadedly connected to the injection head (16).

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