Device for manual liquid injection of lithium battery

Abstract

The utility model discloses a device for manual liquid injection of a lithium battery, which belongs to the technical field of liquid injection of the lithium battery and comprises a first pipeline, one end of the first pipeline is fixedly provided with a one-to-two connecting piece, two ends of the connecting piece are respectively connected with a liquid injection component in an inserted mode, and the first pipeline is communicated with the liquid injection components through the connecting piece. A threaded rod is rotationally connected to the lower end of the connecting piece, one end of each liquid injection assembly is in threaded connection with the threaded rod, each liquid injection assembly comprises a second pipeline, the second pipelines are of an L-shaped structure, and the second pipelines between the liquid injection assemblies are distributed in a U shape. The liquid injection device is simple in structure and convenient to use, liquid injection operation can be conveniently carried out on two batteries at the same time, liquid injection can be conveniently carried out on the batteries of different specifications during manual liquid injection by adjusting the distance between the liquid injection assemblies, the applicability is high, the liquid injection amount of the two batteries can be conveniently controlled through the flow speed adjusting ball valve, and the liquid injection accuracy is improved.

Description

Technical Field

[0001] The utility model specifically relates to a device for manual liquid injection of lithium batteries, belonging to the technical field of lithium battery liquid injection. Background Art

[0002] Lithium batteries usually include a cell, an electrolyte, a protection circuit and a shell. The electrolyte mentioned here needs to be injected into the battery through an injection device. Currently, there are fully automatic injection devices, semi-automatic injection devices and manual injection devices. Manual injection uses a pump (injection pump). The electrolytic barrel is connected to the injection pump to extract and inject into the battery. The traditional method is a pump with an electrolyte inlet pipe and an electrolyte outlet pipe. During operation, the electrolyte outlet pipe is manually inserted into the battery for injection. Only one battery can be injected at a time, which is inefficient. The corresponding production efficiency during manual injection is not convenient to use, so this technical solution is proposed. Utility Model Content

[0003] The utility model aims to solve the shortcomings of the prior art and provide a device for manual liquid injection of lithium batteries, so as to facilitate the liquid injection operation of two batteries at the same time and facilitate the liquid injection processing of batteries of different specifications.

[0004] The utility model achieves the above-mentioned purpose through the following technical scheme: a device for manual liquid injection of lithium batteries, comprising a first pipeline, and a connecting piece divided into two is fixedly installed at one end of the first pipeline, and liquid injection components are inserted at both ends of the connecting piece, the first pipeline and the liquid injection component are connected through the connecting piece, a threaded rod is rotatably connected to the lower end of the connecting piece, and one end of the liquid injection component is threadedly connected to the threaded rod, the liquid injection component comprises a second pipeline, the second pipeline is an L-shaped structure, and the second pipelines between the liquid injection components are U-shaped. When in use, according to the specifications of the external battery, The threaded rod is rotated to adjust the distance between the injection assemblies on both sides, which is convenient for injection operations for batteries of different specifications, and the first pipe is connected to the liquid outlet end of the external injection pump. When injecting, the external injection pump injects the electrolyte into the interior of the connecting piece through the first pipe, and divides it into two through the connecting piece, so that the electrolyte enters the injection assemblies on both sides respectively. By plugging the second pipes in the two injection assemblies into the interior of the external battery, the injection operation is convenient, and it is convenient to inject two batteries at the same time, thereby improving the injection efficiency, facilitating use, and facilitating operation.

[0005] Preferably, one end of the first pipe is connected to the liquid outlet end of an external injection pump, and a handle is fixedly installed on the first pipe at one end of the connecting piece, so as to facilitate the electrolyte to be pressurized and injected into the interior of the first pipe by the injection pump, and the handle makes it convenient for workers to hold it and operate it conveniently during manual injection.

[0006] Preferably, a retaining frame is fixedly installed on both sides of the middle position of the lower end of the connecting piece, and the threaded rod is rotatably installed on the retaining frame. The retaining frame allows the position of the threaded rod to remain stationary, thereby limiting the stability of the injection assembly. When the threaded rod is rotated, the threaded rod only rotates on the retaining frame without being displaced, thereby facilitating the adjustment of the position of the injection assembly.

[0007] Preferably, an adjusting wheel is fixedly installed in the middle position of the threaded rod, and the adjusting wheel is located between the retaining frames, and the threads at both ends of the threaded rod are opened in opposite directions. The adjusting wheel is used to improve the convenience of rotating the threaded rod, and the friction between the adjusting wheel and the fingers is used to facilitate the rotation of the threaded rod, which is convenient for use.

[0008] Preferably, sealing rings are fixedly installed at both ends of the connecting piece, and one end of the second pipe passes through the sealing ring and extends to the interior of the connecting piece. The sealing ring not only improves the stability of the injection assembly during movement and facilitates guidance, but also improves the sealing effect between the connecting piece and the injection assembly to avoid leakage.

[0009] Preferably, a piston ring is fixedly installed at one end of the second pipe, the piston ring is located inside the connecting piece, and the outer side of the piston ring is pressed against the inner side of the connecting piece. The piston ring improves the sealing between the second pipe and the connecting piece to avoid leakage, and facilitates the adjustment of the insertion depth of the second pipe into the connecting piece, thereby adjusting the distance between the injection ends, which is convenient for use with batteries of different specifications.

[0010] Preferably, a connecting piece is fixedly installed at one end of the second pipe, and a threaded tube is fixedly installed on one side of the connecting piece, and one end of the threaded rod is threadedly connected to the threaded tube. Through the connecting piece and the threaded tube, when the threaded rod rotates, the threaded tube does not rotate, so that the threaded tube moves on the threaded rod, so that the threaded tube and the connecting piece drive the second pipe to move, thereby facilitating the adjustment of the distance between the injection ends.

[0011] Preferably, a flow rate regulating ball valve is fixedly installed in the middle position of the second pipeline. The flow rate regulating ball valve is used to control the liquid outlet speed of the injection components at both ends, and then during injection, the injection volume inside the two batteries is controlled to improve the accuracy of injection.

[0012] The beneficial effects of the utility model are as follows: when in use, the electrolyte can be easily flowed out from the injection components at both ends through the connecting piece, so that two batteries can be injected at the same time, and by adjusting the distance between the injection components, it is convenient to inject batteries of different specifications during manual injection, and the utility model has strong applicability and greatly increases the injection efficiency. Moreover, by adjusting the flow rate of the ball valve, the injection amount in the two batteries can be easily controlled, thereby improving the injection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the utility model after adjusting the liquid injection component;

[0015] Figure 3 It is a structural schematic diagram of the position of the connecting piece in the utility model;

[0016] Figure 4 It is a structural schematic diagram of the position of the threaded rod in the utility model;

[0017] Figure 5 It is a structural schematic diagram of the position of the liquid injection component in the utility model.

[0018] In the figure: 1. first pipeline; 2. connecting piece; 3. injection assembly; 301. second pipeline; 302. piston ring; 303. connecting piece; 304. threaded pipe; 305. flow rate regulating ball valve; 4. threaded rod; 5. handle; 6. retaining frame; 7. adjusting wheel; 8. sealing ring. DETAILED DESCRIPTION

[0019] 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.

[0020] See also Figure 1-5As shown, a device for manual liquid injection of lithium batteries includes a first pipeline 1, and a connector 2 divided into two is fixedly installed at one end of the first pipeline 1, and both ends of the connector 2 are plugged with liquid injection components 3, the first pipeline 1 and the liquid injection component 3 are connected through the connector 2, the lower end of the connector 2 is rotatably connected to a threaded rod 4, and one end of the liquid injection component 3 is threadedly connected to the threaded rod 4, the liquid injection component 3 includes a second pipeline 301, the second pipeline 301 is an L-shaped structure, and the second pipelines 301 between the liquid injection components 3 are U-shaped. When in use, according to the specifications of the external battery, the second pipeline 301 is connected to the second pipeline 301 of the liquid injection component 3. The threaded rod 4 is rotated to adjust the distance between the injection components 3 on both sides, which is convenient for injection operations for batteries of different specifications, and the first pipe 1 is connected to the liquid outlet end of the external injection pump. When injecting, the external injection pump injects the electrolyte into the interior of the connecting piece 2 through the first pipe 1, and divides it into two through the connecting piece 2, so that the electrolyte enters the injection components 3 on both sides respectively. By plugging the second pipes 301 in the two injection components 3 into the interior of the external battery, the injection operation is convenient, and it is convenient to inject two batteries at the same time, thereby improving the injection efficiency, facilitating use, and facilitating operation.

[0021] One end of the first pipe 1 is connected to the liquid outlet end of the external injection pump, and a handle 5 is fixedly installed on the first pipe 1 at one end of the connecting member 2, so that the electrolyte is pressurized and injected into the first pipe 1 through the injection pump, and the handle 5 is convenient for workers to hold and operate manually during liquid injection. The lower end of the connecting member 2 is fixedly installed with a retaining frame 6 on both sides of the middle position, and the threaded rod 4 is rotatably installed on the retaining frame 6, and the position of the threaded rod 4 is kept unchanged through the retaining frame 6, so as to control the liquid injection assembly. 3 is limited in position, and when the threaded rod 4 is rotated, the threaded rod 4 only rotates on the retaining frame 6 without displacement, so as to facilitate the adjustment of the position of the liquid injection component 3. An adjusting wheel 7 is fixedly installed at the middle position of the threaded rod 4, and the adjusting wheel 7 is located between the retaining frames 6, and the threads at both ends of the threaded rod 4 are oppositely opened. The adjusting wheel 7 is used to improve the convenience of rotating the threaded rod 4, and the friction between the adjusting wheel 7 and the fingers is used to facilitate the rotation of the threaded rod 4, which is convenient for use.

[0022] Sealing rings 8 are fixedly installed at both ends of the connecting member 2. One end of the second pipe 301 passes through the sealing ring 8 and extends to the interior of the connecting member 2. The sealing ring 8 not only improves the stability of the injection component 3 during movement and facilitates guidance, but also improves the sealing effect between the connecting member 2 and the injection component 3 to avoid leakage.

[0023] A piston ring 302 is fixedly installed at one end of the second pipe 301. The piston ring 302 is located inside the connecting piece 2, and the outer side of the piston ring 302 is pressed against the inner side of the connecting piece 2. The piston ring 302 improves the sealing between the second pipe 301 and the connecting piece 2 to avoid leakage, and facilitates the adjustment of the depth of the second pipe 301 inserted into the connecting piece 2, thereby adjusting the distance between the injection ends, which is convenient for using batteries of different specifications. A connecting piece 303 is fixedly installed at one end of the second pipe 301, and a threaded pipe 304 is fixedly installed on one side of the connecting piece 303. One end of the threaded rod 4 is connected to the threaded pipe 304. 304 are threadedly connected, and through the connecting piece 303 and the threaded tube 304, when the threaded rod 4 rotates, the threaded tube 304 does not rotate, so that the threaded tube 304 moves on the threaded rod 4, so that the threaded tube 304 and the connecting piece 303 drive the second pipe 301 to move, so as to facilitate the adjustment of the distance between the injection ends. A flow rate regulating ball valve 305 is fixedly installed in the middle position of the second pipe 301. Through the flow rate regulating ball valve 305, it is convenient to control the liquid outlet speed of the injection assembly 3 at both ends, and then during injection, it is convenient to control the injection amount inside the two batteries, thereby improving the accuracy of injection.

[0024] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0025] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A device for manual injection of lithium batteries, characterized in that: The invention comprises a first pipeline (1), wherein one end of the first pipeline (1) is fixedly mounted with a connecting piece (2) divided into two parts, both ends of the connecting piece (2) are plugged with a liquid injection assembly (3), the first pipeline (1) and the liquid injection assembly (3) are connected via the connecting piece (2), the lower end of the connecting piece (2) is rotatably connected with a threaded rod (4), and one end of the liquid injection assembly (3) is threadedly connected to the threaded rod (4), the liquid injection assembly (3) comprises a second pipeline (301), the second pipeline (301) is an L-shaped structure, and the second pipelines (301) between the liquid injection assemblies (3) are U-shapedly distributed.

2. The device for manual injection of lithium batteries according to claim 1, characterized in that: One end of the first pipe (1) is connected to the liquid outlet end of an external injection pump, and a handle (5) is fixedly mounted on one end of the first pipe (1) located on the connecting piece (2).

3. The device for manual injection of lithium batteries according to claim 1, characterized in that: A retaining frame (6) is fixedly mounted on both sides of the middle position of the lower end of the connecting member (2), and the threaded rod (4) is rotatably mounted on the retaining frame (6).

4. The device for manual injection of lithium batteries according to claim 3, characterized in that: An adjusting wheel (7) is fixedly mounted in the middle of the threaded rod (4), and the adjusting wheel (7) is located between the retaining frames (6), and the threads at both ends of the threaded rod (4) are opened in opposite directions.

5. The device for manual injection of lithium batteries according to claim 1, characterized in that: Sealing rings (8) are fixedly mounted on both ends of the connecting piece (2), and one end of the second pipe (301) passes through the sealing ring (8) and extends to the interior of the connecting piece (2).

6. The device for manual injection of lithium batteries according to claim 5, characterized in that: A piston ring (302) is fixedly mounted on one end of the second pipe (301), the piston ring (302) is located inside the connecting piece (2), and the outer side of the piston ring (302) is tightly pressed against the inner side of the connecting piece (2).

7. The device for manual injection of lithium batteries according to claim 1, characterized in that: A connecting piece (303) is fixedly mounted on one end of the second pipe (301), and a threaded pipe (304) is fixedly mounted on one side of the connecting piece (303), and one end of the threaded rod (4) is threadedly connected to the threaded pipe (304).

8. The device for manual injection of lithium batteries according to claim 1, characterized in that: A flow rate regulating ball valve (305) is fixedly installed in the middle position of the second pipeline (301).

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