Manual liquid injection tool for battery

Abstract

The utility model provides a battery manual liquid injection tooling, including main body structure, tee joint, vacuum pipeline and liquid injection pipeline, the main body structure is used for supporting battery, tee joint includes first joint, second joint and third joint, first joint and second joint are respectively communicated with vacuum pipeline and liquid injection pipeline, and the third joint is communicated with vacuum pipeline and liquid injection pipeline. The third connector is communicated with a battery liquid injection hole, replenishing liquid sequentially passes through the liquid injection pipeline and the third connector to enter a battery, the interior of the vacuum pipeline is in a negative pressure state under the action of external force, and a first valve used for controlling connection and disconnection of the first connector and the vacuum pipeline is arranged on the first connector. The second connector is provided with a second valve used for controlling connection and disconnection of the second connector and the liquid injection pipeline. According to the utility model, negative pressure can be formed in the battery, and liquid is sucked into the battery by utilizing the negative pressure state in the battery, so that liquid supplementing is completed, and the liquid supplementing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production equipment, in particular to a manual battery liquid injection tool. Background Art

[0002] During the production of power batteries, liquid is injected into the battery using an injection machine. During the injection process, there may be deviations in the injection volume, resulting in excessive or insufficient injection of liquid. When the injection volume is too low, considering work efficiency and production energy consumption, the injection machine is generally not used for refilling. Instead, manual refilling with a syringe is used. However, the battery injection hole is small and the gaps between the internal electrodes of the battery are small. When injecting liquid with a syringe, the internal air pressure of the battery is difficult to discharge. It is difficult to add liquid to the battery by manually injecting liquid with a syringe alone. Utility Model Content

[0003] The purpose of the present invention is to address the deficiencies of the above-mentioned prior art and to propose a manual battery filling tool that can form a negative pressure inside the battery, utilize the negative pressure state inside the battery to suck liquid into the battery, complete the filling, and improve the filling efficiency.

[0004] The utility model proposes a manual battery filling tool, comprising a main structure, a three-way joint, a vacuum pipe and an injection pipe, wherein the main structure is used to support the battery, and the three-way joint comprises a first joint, a second joint and a third joint, wherein the first joint and the second joint are respectively connected to the vacuum pipe and the injection pipe, and the third joint is connected to the battery injection hole, and the replenishing liquid enters the battery through the injection pipe and the third joint in sequence, and the vacuum pipe is connected to a suction structure that puts the interior of the vacuum pipe in a negative pressure state, and a first valve for controlling the connection and disconnection of the first joint and the vacuum pipe is provided on the first joint, and a second valve for controlling the connection and disconnection of the second joint and the injection pipe is provided on the second joint.

[0005] A better technical solution of the present utility model is as follows: a piston is provided in the vacuum pipe, the piston is movably connected to the vacuum pipe, a cover plate is provided at the end of the vacuum pipe away from the first joint, and the piston moves toward the cover plate to form negative pressure in the vacuum pipe.

[0006] A better technical solution of the utility model is as follows: a limiting hole is provided on the cover plate, a connecting rod is provided on the end of the piston facing the cover plate, the connecting rod is inserted into the limiting hole, a limiting rod is laterally provided on the connecting rod, and the piston can rotate in the vacuum pipe.

[0007] The better technical solution of the utility model is as follows: the main structure includes a base and a fixed plate, the fixed plate is provided with adjustment holes, several of the adjustment holes are vertically arranged along the height direction of the fixed plate, fasteners are provided in the adjustment holes, and the fixed plate is connected to the base through the fasteners.

[0008] A better technical solution of the utility model is as follows: a positioning plate is provided on the fixing plate, a positioning hole is opened on the positioning plate, the three-way joint, vacuum pipe and injection pipe are all fixedly arranged on the fixing plate, and the third joint is inserted into the positioning hole.

[0009] A better technical solution of the present invention is as follows: a bottom plate is provided on the base, the bottom plate is correspondingly provided below the positioning plate, and the battery is placed on the bottom plate.

[0010] A better technical solution of the present invention is that an elastic member is provided below the bottom plate, and the bottom plate is connected to the base through the elastic member.

[0011] A better technical solution of the utility model is that the positioning plate is provided with an avoidance groove for avoiding the battery pole.

[0012] The battery manual filling tool of the utility model has the following beneficial effects:

[0013] 1. Use a three-way connector to connect the vacuum pipe and the liquid injection pipe. Manually create a negative pressure environment inside the battery through the vacuum pipe, thereby discharging the gas in the battery and allowing the liquid to enter the battery smoothly, completing the battery refilling and improving the refilling efficiency.

[0014] 2. Set up a positioning plate and a bottom plate. The bottom plate is connected to the base through an elastic member. The battery is placed on the bottom plate. The elasticity of the elastic member pushes the bottom plate and the battery on it upward so that the top of the battery abuts against the positioning plate, fixing the battery between the bottom plate and the positioning plate, so that the battery remains stable and is convenient for rehydration. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings, which are incorporated into and constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention. In these drawings, similar reference numerals are used to represent similar elements. The drawings described below are some embodiments of the present invention, but not all. Those skilled in the art can derive other drawings from these drawings without inventive effort.

[0016] Figure 1 This is a schematic diagram of the installation of an embodiment of the present utility model.

[0017] Figure 2 For the embodiment of the utility model Figure 1Enlarged view of point A in the middle.

[0018] Figure 3 This is a schematic diagram of installation from another perspective of an embodiment of the utility model.

[0019] In the figure: 10, main structure; 11, fixing plate; 111, adjustment hole; 12, base; 13, positioning plate; 131, avoidance groove; 132, positioning hole; 14, bottom plate; 20, three-way joint; 21, first joint; 211, first valve; 22, second joint; 221, second valve; 23, third joint; 30, vacuum pipe; 301, limit hole; 31, connecting rod; 32, limit rod; 40, injection pipe; 50, battery. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. It should be noted that, in the absence of conflict, the embodiments in this application and the features in the embodiments can be arbitrarily combined with each other.

[0021] See also Figures 1 to 3 A manual battery filling tool is used to replenish liquid in a battery 50. The tool comprises a main structure 10, a three-way joint 20, a vacuum pipe 30, and a filling pipe 40 provided on the main structure 10. The three-way joint 20 comprises a first joint 21, a second joint 22, and a third joint 23. The first joint 21 is connected to the vacuum pipe 30, the second joint 22 is connected to the filling pipe 40, and the third joint 23 is connected to the filling hole of the battery 50. A first valve 211 is provided on the first joint 21 to control the connection and disconnection between the first joint 21 and the vacuum pipe 30. A second valve 221 is provided on the second joint 22 to control the passage between the second joint 22 and the filling pipe 40. During fluid replenishment, the first valve 211 is in the open state and the second valve 221 is in the closed state. Under the action of external force, the interior of the vacuum pipe 30 is in a negative pressure state, which in turn makes the third connector 23 connected thereto and the interior of the battery 50 in a negative pressure state. Then the first valve 211 is closed and the second valve 221 is opened. Since the interior of the battery 50 is in a negative pressure state, the liquid is sucked into the interior of the battery 50 through the second connector 22 and the third connector 23 in sequence, completing the fluid replenishment.

[0022] The main structure 10 includes a fixed plate 11 and a base 12. A three-way connector 20, a vacuum line 30, and a liquid injection line 40 are all fixedly mounted on the fixed plate 11. The three-way connector 20 is Y-shaped, with two connectors on it, namely a first connector 21 and a second connector 22, which are sealedly connected to the vacuum line 30 and the liquid injection line 40, respectively. The other end of the liquid injection line 40 is connected to the liquid storage device, and the third connector 23 below it is used to connect to the liquid injection port of the battery 50. The first connector 21 is provided with a first valve 211, and the second connector 22 is provided with a second valve 221. When the first valve 211 is opened and the second valve 221 is closed, the second connector 22 and the third connector 23 are both connected to the vacuum pipe 30. When the vacuum pipe 30 is in a negative pressure state, the interior of the battery 50 is also in a negative pressure state. Afterwards, the first valve 211 is closed and the second valve 221 is opened in sequence. Since the interior of the battery 50 is in a negative pressure state, liquid is sucked into the interior of the battery 50 to achieve liquid replenishment. Since the interior of the battery 50 is in a negative pressure state, there is no difficulty in discharging gas after the liquid enters the interior of the battery 50.

[0023] In this embodiment, a piston is installed within the vacuum pipe 30. The piston is movable within the vacuum pipe 30, and this movement of the piston changes the air pressure within the vacuum pipe 30. A cover plate is provided at the end of the vacuum pipe 30 away from the first connector 21. The cover plate has a limit hole 301 defined therein. A connecting rod 31 is provided at the end of the piston and is inserted into the limit hole 301. An operator grasps the connecting rod 31 to move the piston toward the cover plate, creating a negative pressure within the vacuum pipe 30.

[0024] A limiting rod 32 is provided at the end of the connecting rod 31. The limiting hole 301 is a waist-shaped hole. The limiting rod 32 is positioned horizontally relative to the connecting rod 31, and its length is shorter than that of the limiting hole 301. During movement of the connecting rod 31, the limiting rod 32 can move with the connecting rod 31 through the limiting hole 301 without interfering with the limiting hole 301, thereby ensuring that the piston's travel is long enough to create a negative pressure environment within the vacuum duct 30. When the piston reaches its maximum travel, the limiting rod 32 is located outside the vacuum duct 30. Rotating the connecting rod 31 causes the limiting rod 32 to span the limiting hole 301 and abut against the cover plate. The limiting rod 32 forms a limit outside the limiting hole 301, ensuring that the piston remains stable within the vacuum duct 30 after movement, maintaining a negative pressure state within the vacuum duct 30.

[0025] Preferably, a plurality of limiting rods 32 are spaced apart along the length of the connecting rod 31 and are parallel to each other. The mutual positioning of different limiting rods 32 and limiting holes 301 allows the piston to remain stable after moving at different distances within the vacuum pipe 30, thereby controlling the negative pressure within the vacuum pipe 30. When the limiting rod 32 closest to the piston abuts the cover plate, the piston travels the shortest distance and the negative pressure within the vacuum pipe 30 is minimized. When the limiting rod 32 farthest from the piston abuts the cover plate, the piston travels the longest distance and the negative pressure within the vacuum pipe 30 is maximized.

[0026] As another embodiment, the vacuum pipe 30 is connected to a suction pump, and the vacuum pipe 30 is placed in a negative pressure state by the suction pump.

[0027] The main structure 10 includes a fixing plate 11 and a base 12. The tee connector 20, vacuum line 30, and injection line 40 are all fixedly mounted on the fixing plate 11. The fixing plate 11 is provided with a plurality of adjustment holes 111, which are spaced apart along the height of the fixing plate 11. Fasteners are located within the adjustment holes 111 to secure the fixing plate 11 to the base 12. By moving the fixing plate 11 and adjusting the overlap between the fixing plate 11 and the base 12, the height of the main structure 10 can be changed to accommodate batteries 50 of varying heights.

[0028] The fixing plate 11 is provided with a positioning plate 13, which has a positioning hole 132 defined therein. The third connector 23 is inserted into this hole. The battery 50 is placed on the base 12, and the battery 50's injection hole is aligned with the positioning hole 132. This allows liquid to be injected into the battery 50 through the three-way connector 20. The positioning plate 13 has a relief groove 131 defined therein. When the battery 50's injection hole and the positioning hole 132 are aligned, the battery 50's terminal is positioned within the relief groove 131, preventing interference between the battery 50 terminal and the positioning plate 13.

[0029] In this embodiment, the base 12 has an L-shaped cross-section. A bottom plate 14 is provided on the base 12. The bottom plate 14 is directly opposite the positioning plate 13 and is located below the positioning plate 13. An elastic member is provided below the bottom plate 14, with both ends of the elastic member fixedly connecting the bottom plate 14 and the base 12. The battery 50 is placed on the bottom plate 14. When the battery 50 is placed on the bottom plate 14, the elastic member is compressed, and the bottom plate 14 retracts the elastic member to push the bottom plate 14 upward, so that the top of the battery 50 abuts the bottom of the positioning plate 13. The upper and lower ends of the battery 50 abut the positioning plate 13 and the bottom plate 14 respectively. The battery 50 is fixed between the positioning plate 13 and the bottom plate 14, thereby maintaining the stability of the battery 50 and preventing it from shaking during the injection process.

[0030] The process of filling the battery 50 is as follows: adjust the fixing plate 11 according to the height of the battery 50, move the fixing plate 11 so that the distance between the positioning plate 13 and the bottom plate 14 is close to that of the battery 50, place the battery 50 on the bottom plate 14, and align the battery 50 pole with the avoidance groove 131, under the action of the elastic member, the top of the battery 50 abuts against the positioning plate 13, manually move the battery 50 so that the battery 50 filling hole is aligned with the positioning hole 132 on the positioning plate 13, and complete the fixation of the battery 50. Subsequently, the first valve 211 is opened and the second valve 221 is closed. The connecting rod 31 is manually operated to drive the piston to move outward so that the piston moves to the maximum stroke. The connecting rod 31 is then rotated so that the limiting rod 32 is placed horizontally outside the limiting hole 301, and the piston is fixed to maintain the internal negative pressure environment of the vacuum pipe 30. Subsequently, the first valve 211 is closed and the second valve 221 is opened in turn. The liquid in the liquid storage device is attracted by the negative pressure inside the battery 50 and is sucked into the battery 50 through the second connector 22 and the third connector 23 in turn to achieve fluid replenishment. Finally, the second valve 221 is closed to complete the fluid replenishment.

[0031] Finally, it should be noted that the above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art will appreciate that modifications may be made to the technical solutions described in the above embodiments, or that some of the technical features may be replaced with equivalents; and such modifications or replacements do not deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A battery manual filling tool, characterized in that: The invention comprises a main structure (10), a three-way joint (20), a vacuum pipe (30) and a liquid injection pipe (40), wherein the main structure (10) is used to support a battery (50), and the three-way joint (20) comprises a first joint (21), a second joint (22) and a third joint (23), wherein the first joint (21) and the second joint (22) are respectively connected to the vacuum pipe (30) and the liquid injection pipe (40), and the third joint (23) is connected to the liquid injection hole of the battery (50), and the supplementary liquid enters the interior of the battery (50) through the liquid injection pipe (40) and the third joint (23) in sequence, and the vacuum pipe (30) is connected to a suction structure for placing the interior of the vacuum pipe in a negative pressure state, and the first joint (21) is provided with a first valve (211) for controlling the connection and disconnection between the first joint (21) and the vacuum pipe (30), and the second joint (22) is provided with a second valve (221) for controlling the connection and disconnection between the second joint (22) and the liquid injection pipe (40).

2. A battery manual filling tool according to claim 1, characterized in that: A piston is provided in the vacuum pipe (30), the piston being movably connected to the vacuum pipe (30), a cover plate being provided at the end of the vacuum pipe (30) away from the first joint (21), and the piston moving toward the cover plate forms a negative pressure in the vacuum pipe (30).

3. A manual battery filling tool according to claim 2, characterized in that: A limiting hole (301) is provided on the cover plate, and a connecting rod (31) is provided at the end of the piston facing the cover plate. The connecting rod (31) is inserted into the limiting hole (301), and a limiting rod (32) is transversely provided on the connecting rod (31). The piston can rotate in the vacuum pipe (30).

4. A battery manual filling tool according to claim 1, characterized in that: The main structure (10) comprises a base (12) and a fixing plate (11); the fixing plate (11) is provided with adjustment holes (111); a plurality of the adjustment holes (111) are vertically arranged along the height direction of the fixing plate (11); fasteners are provided in the adjustment holes (111); and the fixing plate (11) is connected to the base (12) via the fasteners.

5. A battery manual filling tool according to claim 4, characterized in that: A positioning plate (13) is provided on the fixing plate (11), and a positioning hole (132) is provided on the positioning plate (13). The three-way joint (20), the vacuum pipe (30) and the injection pipe (40) are all fixedly provided on the fixing plate (11), and the third joint (23) is inserted into the positioning hole (132).

6. A manual battery filling tool according to claim 5, characterized in that: A bottom plate (14) is provided on the base (12), the bottom plate (14) is correspondingly provided below the positioning plate (13), and the battery (50) is placed on the bottom plate (14).

7. A manual battery filling tool according to claim 6, characterized in that: An elastic member is provided below the bottom plate (14), and the bottom plate (14) is connected to the base (12) via the elastic member.

8. The manual battery filling tool according to claim 5, characterized in that: The positioning plate (13) is provided with an avoidance groove (131) for avoiding the pole of the battery (50).

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