Liquid supplementing device for square aluminum shell lithium battery

Abstract

The utility model discloses a liquid supplementing device for a square lithium battery with an aluminum shell, which comprises a motor group, a push plate is arranged at the output end of the motor group, and the push plate is in transmission connection with the motor group; the inner diameter of the liquid injection barrel is matched with the outer diameter of the motor set, the liquid injection barrel is connected with the motor set in a clamped mode, a liquid storage space is formed in the liquid injection barrel, a discharging port is formed in the liquid injection barrel and communicated with the liquid storage space, and scale strips are arranged on the liquid injection barrel; a motor set, a liquid injection barrel and a liquid injection needle are arranged, the motor set and the liquid injection barrel are connected in a clamped mode, the liquid injection needle is in threaded connection with the liquid injection barrel, a push plate capable of moving up and down in the liquid injection barrel is arranged at the output end of the motor set, and air pressure in the liquid injection barrel can be changed through movement of the push plate in the liquid injection barrel; and therefore, the electrolyte in the electrolyte injection barrel is sucked or discharged.

Description

Technical Field

[0001] The utility model belongs to the technical field of lithium battery processing, and particularly relates to a liquid replenishing device for square aluminum shell lithium batteries. Background Art

[0002] In the production process of lithium batteries, after pre-charging of the lithium batteries, the electrolyte liquid accounts for 85%-95% of the internal capacity of the battery. Liquid replenishment of the lithium battery can make the electrolyte inside the battery reach 100% of the battery capacity, which helps the electrolyte to fully wet the positive and negative electrode plates and the separator inside the battery, so as to improve the electrical performance and the service life of the battery in cyclic use.

[0003] In the existing liquid replenishment of lithium batteries, most of them replenish the lithium batteries by using a simple syringe, which has low efficiency, inaccurate liquid replenishment volume and poses a safety hazard to the human body, and cannot meet the production requirements of lithium batteries. Summary of the Utility Model

[0004] In order to solve the above problems existing in the prior art, the purpose of the utility model is to provide a liquid replenishing device for square aluminum shell lithium batteries.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A motor group, with a push plate provided at the output end, and the push plate is in transmission connection with the motor group;

[0007] A liquid injection barrel, the inner diameter of the liquid injection barrel is adapted to the outer diameter of the motor group, and the liquid injection barrel is snap-connected with the motor group to form a liquid storage space inside the liquid injection barrel. An outlet is formed on the liquid injection barrel, and the outlet is communicated with the liquid storage space. A scale bar is provided on the liquid injection barrel;

[0008] A liquid injection needle, which is threadedly connected to one end of the liquid injection barrel and is communicated with the liquid storage space.

[0009] As a preference of the utility model, a plurality of convex blocks are provided on the circumferential surface of the motor group, and the convex blocks are fixedly connected with the circumferential surface of the motor group. An L-shaped groove adapted to the convex blocks is provided on the liquid injection barrel. The L-shaped groove is located at the top of the liquid injection barrel and penetrates through the wall of the liquid injection barrel. The motor group and the liquid injection barrel are snap-connected with each other through the cooperation of the convex blocks and the L-shaped groove.

[0010] As a preference of the utility model, a worm is provided at the output end of the motor group. One end of the worm is in transmission connection with the motor group, and the other end is fixedly connected with the push plate. The motor group is used to drive the push plate to move up and down in the liquid storage space.

[0011] As a preference of the utility model, a rubber plug is sleeved on the push plate, and the rubber plug is in interference fit with the inner wall of the liquid storage space.

[0012] Preferably, a hand-held part is provided on the motor group. The hand-held part is fixedly connected to the peripheral surface of the motor group, and a control switch for controlling the driving of the motor group is formed on the hand-held part.

[0013] Preferably, an external thread is formed on the peripheral surface of the liquid outlet, and an internal thread adapted to the external thread is formed inside the liquid injection needle. The liquid injection needle is threadedly connected to the liquid outlet.

[0014] Preferably, the end of the liquid injection needle away from the liquid injection barrel is beveled, and a tip is formed on the liquid injection needle.

[0015] Preferably, the liquid injection barrel is made of a transparent and corrosion-resistant material, and the scale bar is distributed along the height of the liquid injection barrel.

[0016] The beneficial effects of the present invention are as follows:

[0017] As a square aluminum shell lithium battery liquid filling device, the present invention is provided with a motor group, a liquid injection barrel and a liquid injection needle. The motor group and the liquid injection barrel are clamped, and the liquid injection needle and the liquid injection barrel are threadedly connected. By setting a push plate that can move up and down in the liquid injection barrel at the output end of the motor group, the movement of the push plate inside the liquid injection barrel can change the air pressure inside the liquid injection barrel, thereby realizing the inhalation or discharge of the electrolyte inside the liquid injection barrel. At the same time, a scale bar is provided on the peripheral surface of the liquid injection barrel, and the scale bar can intuitively observe the storage liquid volume inside the liquid injection barrel, thereby realizing the precise control of the amount of liquid filled into the battery. Description of the Drawings

[0018] The following further describes the present invention in detail with reference to the drawings and specific implementation methods.

[0019] Figure 1 is the overall structural schematic diagram of the present invention;

[0020] Figure 2 is the partial structural schematic diagram of the present invention;

[0021] Figure 3 is the structural schematic diagram of the liquid injection barrel of the present invention;

[0022] Figure 4 is the bottom view structural schematic diagram of the installation of the motor group and the convex block of the present invention.

[0023] In the figure: 1. Motor group; 2. Liquid injection barrel; 3. Liquid injection needle; 4. Battery; 11. Worm; 12. Push plate; 13. Convex block; 14. Hand-held part; 15. Control switch; 16. Rubber plug; 21. Liquid storage space; 22. Liquid outlet; 23. Scale bar; 24. L groove; 25. External thread. Detailed implementation manners

[0024] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model, that is, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Usually, the components of the embodiments of the present utility model described and shown in the accompanying drawings herein can be arranged and designed in various different configurations.

[0025] Therefore, the detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the present utility model to be protected, but only represents the selected embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present utility model.

[0026] The following is combined with Figures 1-4 to illustrate the detailed implementation manners of the present utility model. A liquid replenishing device for a square aluminum shell lithium battery includes:

[0027] A motor group 1, a push plate 12 is provided at the output end, and the push plate 12 is in transmission connection with the motor group 1. The motor group 1 includes a motor and a motor housing for carrying the motor. The motor is fixedly connected in the motor housing. The motor is used to drive the back-and-forth movement of the push plate 12 to realize the suction or pushing out of the stored liquid in the liquid injection barrel 2 by the push plate 12;

[0028] A liquid injection barrel 2, the inner diameter of the liquid injection barrel 2 is adapted to the outer diameter of the motor group 1 to realize the connection between the motor group 1 and the liquid injection barrel 2. At the same time, it is ensured that the push plate 12 can move up and down inside the liquid injection barrel 2 to change the air pressure inside the liquid injection barrel 2. And the liquid injection barrel 2 is snap-connected to the motor group 1 to make the connection between the motor group 1 and the liquid injection barrel 2 detachable. A liquid storage space 21 is formed inside the liquid injection barrel 2. An outlet 22 is formed on the liquid injection barrel 2, and the outlet 22 is communicated with the liquid storage space 21. The outlet 22 is used to suck the liquid of the battery 4 into the liquid storage space 21 or output the liquid in the liquid storage space 21. A scale bar 23 is provided on the liquid injection barrel 2, and the scale bar 23 can intuitively display the amount of liquid stored in the liquid storage space 21, which is convenient for subjective judgment;

[0029] The injection needle 3 is threadedly connected to one end of the injection barrel 2 and is communicated with the liquid storage space 21. The injection needle 3 and the injection barrel 2 are detachable. In actual use, due to the differences in the sizes of the batteries 4 and the differences in the sizes of the filling holes of the electrolyte of the batteries 4, the convenient detachable installation between the injection needle 3 and the injection barrel 2 facilitates the replacement of the injection needle 3 to meet the needs of filling electrolytes of different batteries 4.

[0030] Please refer to Figures 1-2 As shown, the motor group 1 is provided with a plurality of protrusions 13 on its circumference, and the protrusions 13 are fixedly connected to the circumference of the motor group 1. The liquid injection barrel 2 is provided with an L-groove matched with the protrusions 13, and the L-groove is located at the top of the liquid injection barrel 2 and passes through the wall of the liquid injection barrel 2. The motor group 1 and the liquid injection barrel 2 are mutually engaged through the cooperation of the protrusions 13 and the L-groove, and the L-groove is located at the top of the liquid injection barrel 2. When the motor group 1 and the liquid injection barrel 2 are engaged, the protrusions 13 are aligned in the L-groove, the protrusions 13 are first completely moved into the L-groove, and then the motor group 1 is rotated to realize the clamping limit between the motor group 1 and the liquid injection barrel 2, so as to realize the engagement between the motor group 1 and the liquid injection barrel 2.

[0031] Please refer to Figure 2 As shown, a worm 11 is provided at the output end of the motor group 1, one end of the worm 11 is transmission-connected to the motor group 1, and the other end is fixedly connected to the push plate 12. The motor group 1 is used to drive the push plate 12 to move up and down in the liquid storage space 21. The worm 11 is driven by a motor to be retractable up and down, and the movement of the worm 11 drives the push plate 12 fixed at one end thereof to move. Due to the clamping connection between the motor group 1 and the liquid injection barrel 2, the movement of the push plate 12 changes the air pressure in the liquid storage space 21, thereby realizing the suction of external electrolyte into the liquid storage space 21 or the filling of the electrolyte in the liquid storage space 21 into the battery 4.

[0032] Please refer to Figure 2 As shown, a rubber plug 16 is sleeved on the push plate 12, and the rubber plug 16 has an interference fit with the inner wall of the liquid storage space 21. In order to improve the airtightness between the push plate 12 and the inside of the liquid storage space 21, the rubber plug 16 is sleeved on the circumferential surface of the push plate 12 to improve the airtightness when the push plate 12 moves, so that the rubber plug 16 has an interference fit with the inner wall of the liquid storage space 21 to change the pressure in the liquid storage space 21.

[0033] Please refer to Figure 1As shown, the motor group 1 is provided with a hand-held portion 14, and the hand-held portion 14 is fixedly connected to the circumference of the motor group 1. A control switch 15 for controlling the drive of the motor group 1 is formed on the hand-held portion 14. The hand-held portion 14 is convenient for holding the entire device. At the same time, a control switch 15 is formed at the lower part of the hand-held portion 14, which can be used to control the operating state of the motor group 1. In this embodiment, the operation of the motor group 1 forms two gears, corresponding to the upward and downward movement of the push plate 12 respectively. When the push plate 12 moves upward, the electrolyte is sucked into the liquid storage space 21. When the push plate 12 moves downward, the liquid stored in the liquid storage space 21 is filled into the battery 4. The scale bar 23 is used for intuitive judgment when the electrolyte is sucked in or out.

[0034] Please refer to Figure 3 As shown, an external thread 25 is formed on the circumferential surface of the discharge port 22, and an internal thread matched with the external thread 25 is formed inside the injection needle 3. The injection needle 3 is threadedly connected to the discharge port 22. By threading the injection barrel 2 and the injection needle 3, the injection needle 3 can be quickly installed on the discharge port 22, and at the same time, it is convenient to install injection needles 3 of different sizes.

[0035] Please refer to Figure 3 As shown, the end of the injection needle 3 away from the injection barrel 2 is in a bevel shape, and a tip is formed on the injection needle 3 to facilitate the insertion of the injection needle 3 into the filling port of the battery 4.

[0036] Please refer to Figures 1-3 As shown, the liquid injection barrel 2 is made of a transparent corrosion-resistant material. The transparent material and the scale bars 23 formed on the peripheral surface can be used to visually observe the storage volume inside the liquid injection barrel 2 through the liquid injection barrel 2. The scale bars 23 are distributed along the height of the liquid injection barrel 2.

[0037] Working principle of this utility model:

[0038] Before liquid injection, the motor group 1 and the liquid injection barrel 2 are clamped together. By aligning the protrusion 13 provided on the motor group 1 with the L groove, the protrusion 13 is first completely inserted into the L groove, and then the motor group 1 is rotated to make the protrusion 13 and the hand-held part 14 clamped with each other, so as to realize the clamping connection between the motor group 1 and the liquid injection barrel 2. Since the output end of the motor group 1 is connected with the push plate 12 through the worm 11, the motor group 1 and the liquid injection barrel 2 can be connected to each other to realize the push plate 12 to extend into the liquid storage space 21, and the rubber plug 16 sleeved on the push plate 12 is interference-fitted with the inner wall of the liquid storage space 21, and the push plate 12 is driven by the motor group 1 to realize the movement of the push plate 12 in the liquid storage space 21;

[0039] During liquid replenishment, the worm 11 drives the push plate 12 to move upward, enabling the injection needle 3 to suck in the electrolyte. When replenishing the battery 4 with liquid, the injection needle 3 is inserted into the filling hole of the battery 4. The motor set 1 is started to move the push plate 12 downward, thereby changing the air pressure inside the liquid storage space 21 and driving the electrolyte stored in the liquid storage space 21 to flow out from the discharge port 22, passing through the injection needle 3 and flowing into the battery 4 to achieve the replenishment of the electrolyte. In actual use, the injection needle 3 can be disassembled according to the size of the filling hole of the battery 4. Among them, the discharge port 22 and the injection needle 3 are threadedly connected, facilitating the installation and connection of the injection needle 3 on the liquid injection barrel 2.

[0040] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, terms such as "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. 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.

[0041] The above content is only an example and explanation of the structure of the present invention. Those skilled in the art of this technology can make various modifications, supplements, or use similar methods to replace the specific embodiments described, as long as they do not deviate from the structure of the invention or exceed the scope defined by the claims of this application, they should fall within the protection scope of the present invention.

Claims

1. A square aluminum shell lithium battery refilling device, characterized in that: include: The motor group has a push plate at the output end, and the push plate is drivingly connected to the motor group; A liquid injection barrel, the inner diameter of which is adapted to the outer diameter of the motor unit, and the liquid injection barrel is snap-connected with the motor unit, a liquid storage space is formed inside the liquid injection barrel, a discharge port is formed on the liquid injection barrel, the discharge port is communicated with the liquid storage space, and a scale bar is provided on the liquid injection barrel; The injection needle is threadedly connected to one end of the injection barrel and is communicated with the liquid storage space.

2. A square aluminum shell lithium battery refilling device according to claim 1, characterized in that: The motor group is provided with a plurality of protrusions on the circumferential surface, and the protrusions are fixedly connected to the circumferential surface of the motor group. The liquid injection barrel is provided with an L-groove adapted to the protrusions. The L-groove is located at the top of the liquid injection barrel and passes through the wall of the liquid injection barrel. The motor group and the liquid injection barrel are mutually clamped through the cooperation of the protrusions and the L-groove.

3. A square aluminum shell lithium battery refilling device according to claim 2, characterized in that: A worm is provided at the output end of the motor group, one end of the worm is drivingly connected to the motor group, and the other end is fixedly connected to the push plate. The motor group is used to drive the push plate to move up and down in the liquid storage space.

4. A square aluminum shell lithium battery refilling device according to claim 1, characterized in that: A rubber plug is sleeved on the push plate, and the rubber plug is interference-fitted with the inner wall of the liquid storage space.

5. A square aluminum shell lithium battery refilling device according to claim 4, characterized in that: The motor group is provided with a hand-held part, the hand-held part is fixedly connected to the peripheral surface of the motor group, and a control switch for controlling the driving of the motor group is formed on the hand-held part.

6. A square aluminum shell lithium battery refilling device according to claim 1, characterized in that: An external thread is formed on the peripheral surface of the discharge port, an internal thread matching the external thread is formed inside the injection needle, and the injection needle is threadedly connected to the discharge port.

7. A square aluminum shell lithium battery refilling device according to claim 6, characterized in that: One end of the injection needle away from the injection barrel is in a slope shape, and a tip is formed on the injection needle.

8. The square aluminum shell lithium battery refilling device according to claim 1, characterized in that: The liquid injection barrel is made of a transparent corrosion-resistant material, and the scale bar is distributed along the height of the liquid injection barrel.

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