Liquid injection hole cleaning device for lithium battery production

Abstract

The utility model discloses a liquid injection hole cleaning device for lithium battery production, and belongs to the technical field of battery production. The lower end of the frame body is connected with a conveying mechanism, the upper end of the frame body is sequentially connected with a liquid injection mechanism, a cleaning mechanism and a drying mechanism in the transmission direction of the conveying mechanism, and the upper end of a conveying pull belt of the conveying mechanism is connected with a plurality of positioning blocks sequentially arranged in the transmission direction of the conveying pull belt. And the positioning block is sequentially matched with the liquid injection mechanism, the cleaning mechanism and the drying mechanism. According to the utility model, the electrolyte crystallization phenomenon of the liquid injection hole is solved, the problems of sand holes and collapsing pits during welding and sealing are avoided, the overall quality of a battery product is improved, manual intervention is reduced, the production period is shortened, a production line can operate more quickly and stably, the production efficiency is improved, the requirement on the number of operators is reduced, and the production cost is reduced. And the labor cost and the production cost are reduced.

Description

Technical Field

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

[0002] In the secondary liquid injection process of lithium ion battery production, the secondary liquid injection belongs to equal difference liquid injection. It is necessary to calculate the liquid injection volume of the battery according to the front block weight of the first injection, and inject the corresponding amount of electrolyte to reach the total liquid injection volume specified by the process standard. After the liquid injection is completed, in order to seal the battery and prevent electrolyte leakage, it is necessary to shape the battery and drive the inner rubber nail into the liquid injection hole.

[0003] In the prior art, electrolyte and impurities often remain on the surface of the battery upper cover during the liquid injection and shaping processes. If these residues are not removed in time, a series of problems will occur. However, the traditional cleaning method relies on manual wiping, which not only increases the labor cost and reduces the production efficiency, but also has potential safety hazards during the manual operation. For example, the residual electrolyte may splash into sensitive parts such as the eyes of workers, posing a threat to personal safety. In addition, due to the uncertainty of human factors, it is impossible to ensure that each battery can be thoroughly wiped and cleaned, which may result in impurities and electrolyte residues still remaining in the liquid injection hole. These residues may cause quality problems such as cratering and sand holes during the subsequent sealing and welding processes, thereby affecting the overall performance and safety of the battery. Summary of the Utility Model

[0004] To solve the problems in the background art, the utility model provides a liquid injection hole cleaning device for lithium battery production.

[0005] To achieve the above object, the utility model adopts the following technical solution: A liquid injection hole cleaning device for lithium battery production includes a positioning block, a conveying mechanism, a frame body, a liquid injection mechanism, a cleaning mechanism, and a drying mechanism; the lower end of the frame body is connected with a conveying mechanism, and the upper end of the frame body is sequentially connected with a liquid injection mechanism, a cleaning mechanism, and a drying mechanism according to the transmission direction of the conveying mechanism. The upper end of the conveying belt of the conveying mechanism is connected with a plurality of positioning blocks arranged sequentially along its transmission direction, and the positioning blocks are sequentially matched with the liquid injection mechanism, the cleaning mechanism, and the drying mechanism; the cleaning mechanism includes an upper cover cleaning unit and a liquid injection hole cleaning unit, and the upper cover cleaning unit includes a motor one and a brush one; the motor one is horizontally fixed on the upper end of the frame body, and the output shaft of the motor one is coaxially and fixedly connected with the mounting shaft of the brush one; the liquid injection hole cleaning unit includes a motor two and a brush two; the motor two is vertically fixed on the upper end of the frame body, and the output shaft of the motor two is coaxially and fixedly connected with the mounting shaft of the brush two, and both the brush one and the brush two are matched with the positioning block.

[0006] The liquid injection mechanism includes an air inlet pipe 1, an air outlet pipe 1, a liquid storage tank, and a liquid spray nozzle; the liquid storage tank is fixed at the upper end of the frame body, the upper end of the liquid storage tank is communicated with the air outlet end of the air outlet pipe 1, the air inlet end of the air outlet pipe 1 is communicated with the air inlet pipe 1, a liquid spray nozzle is provided at the lower end of the liquid storage tank, and the liquid spray nozzle is matched with the positioning block.

[0007] A regulating valve is provided at the feed end of the liquid spray nozzle.

[0008] The drying mechanism includes an air inlet pipe 2, an air outlet pipe 2, and an air jet nozzle; the air inlet pipe 2 is fixed at the upper end of the frame body, the air outlet end of the air inlet pipe 2 is communicated with the air inlet end of the air outlet pipe 2, the air outlet end of the air outlet pipe 2 is communicated with the air inlet end of the air jet nozzle, and the air jet nozzle is matched with the positioning block.

[0009] An infrared sensor is provided on the conveying mechanism, and the infrared sensor is arranged at the liquid injection mechanism and is signal-transmission connected to the system controller.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0011] 1. The present utility model effectively solves the problem of electrolyte crystallization at the liquid injection hole, avoids the problems of sand holes and cratering during welding and sealing, improves the overall quality of battery products, effectively prevents potential safety hazards caused by battery leakage, reduces the scrap rate of batteries due to leakage, and enhances the use safety and reliability of products.

[0012] 2. The present utility model simplifies the operation steps through automated or semi-automated operations, reduces manual intervention, shortens the production cycle, enables the production line to operate more quickly and stably, improves production efficiency, reduces the demand for the number of operators, and reduces labor costs. At the same time, due to the reduction of rework and scrap caused by product quality problems, the production cost is further reduced. Description of the Drawings

[0013] Figure 1 is the structural schematic diagram of the present utility model;

[0014] Figure 2 is Figure 1 the front view of

[0015] Figure 3 is Figure 1 the top view of

[0016] Figure 4 is Figure 1 the side view of Detailed Embodiments

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0018] A liquid injection hole cleaning device for lithium battery production, including a positioning block 17, a transmission mechanism 18, a frame body, a liquid injection mechanism, a cleaning mechanism, and a drying mechanism; the lower end of the frame body is connected with a transmission mechanism 18, and the upper end of the frame body is sequentially connected with a liquid injection mechanism, a cleaning mechanism, and a drying mechanism according to the transmission direction of the transmission mechanism 18. The upper end of the transmission belt of the transmission mechanism 18 is connected with a plurality of positioning blocks 17 evenly arranged in sequence along its transmission direction. The positioning block 17 is sequentially matched with the liquid injection mechanism, the cleaning mechanism, and the drying mechanism, and the transmission mechanism 18 is connected with the system controller for signal transmission.

[0019] The liquid injection mechanism includes an air inlet pipe 1, an air outlet pipe 1, a liquid storage tank 4, and a liquid spraying nozzle 6; the liquid storage tank 4 is fixed at the upper end of the frame body, and the upper end of the liquid storage tank 4 is communicated with the air outlet end of the air outlet pipe 1. The air inlet end of the air outlet pipe 1 is communicated with the air inlet pipe 1 through a positive pressure gauge 1. The lower end of the liquid storage tank 4 is provided with a liquid spraying nozzle 6, and the liquid spraying nozzle 6 is matched with the positioning block 17.

[0020] A regulating valve 5 is provided at the feed end of the liquid spraying nozzle 6, and the regulating valve 5 is connected with the system controller for signal transmission.

[0021] The cleaning mechanism includes an upper cover cleaning unit and a liquid injection hole cleaning unit. The upper cover cleaning unit includes a motor 1 8 and a brush 1 9; the motor 1 8 is horizontally fixed at the upper end of the frame body, and the output shaft of the motor 1 8 is coaxially fixed with the mounting shaft of the brush 1 9; the liquid injection hole cleaning unit includes a motor 2 10 and a brush 2 11; the motor 2 10 is vertically fixed at the upper end of the frame body, and the output shaft of the motor 2 10 is coaxially fixed with the mounting shaft of the brush 2 11. Both the brush 1 9 and the brush 2 11 are matched with the positioning block 17.

[0022] The drying mechanism includes an air inlet pipe 2 12, an air outlet pipe 2 14, and an air jet nozzle 15; the air inlet pipe 2 12 is fixed at the upper end of the frame body, and the air outlet end of the air inlet pipe 2 12 is communicated with the air inlet end of the air outlet pipe 2 14 through a positive pressure gauge 2 13. The air outlet end of the air outlet pipe 2 14 is communicated with the air inlet end of the air jet nozzle 15, and the air jet nozzle 15 is matched with the positioning block 17.

[0023] An infrared sensor 7 is provided on the transmission mechanism 18. The infrared sensor 7 is arranged at the liquid injection mechanism and is connected with the system controller for signal transmission.

[0024] A method for using a liquid injection hole cleaning device for lithium battery production according to the present utility model, the method comprising the following steps:

[0025] S1: Positive pressure gas enters the liquid storage tank 4 through the air inlet pipe 1 and the air outlet pipe 3, causing a positive pressure state to be formed in the liquid storage tank 4;

[0026] S2: Start the first motor 8 and the second motor 10 to drive the first brush 9 and the second brush 11 to rotate respectively;

[0027] S3: The second air inlet pipe 12 is connected to a gas source to supply gas to the air jet nozzle 15;

[0028] S4: Place the battery 16 into the positioning block 17 in sequence;

[0029] S5: Start the conveying mechanism 18 to drive the battery 16 to move;

[0030] S6: After the infrared sensor 7 senses the battery 16, it transmits a signal to the system controller;

[0031] S7: The system controller controls the conveying mechanism 18 to stop working;

[0032] S8: The system controller controls the regulating valve 5 to open;

[0033] S9: The electrolyte (DMC) in the liquid storage tank 4 quantitatively enters the battery 16 through the liquid injection nozzle 6 and the liquid injection hole 19 under the action of the positive pressure gas;

[0034] S10: The conveying mechanism 18 is started again to drive the battery 16 to continue moving;

[0035] S11: The first brush 9 cleans the upper cover of the battery 16;

[0036] S12: The second brush 11 cleans the liquid injection hole 19 of the battery 16;

[0037] S13: The air jet nozzle 15 cleans and dries the residual liquid and impurities at the upper cover of the battery 16.

[0038] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent conditions of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0039] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment contains only an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A liquid injection hole cleaning device for lithium battery production, characterized in that: It includes positioning blocks (17), a conveying mechanism (18), a frame body, a liquid injection mechanism, a cleaning mechanism, and a drying mechanism; a conveying mechanism (18) is connected to the lower end of the frame body, and a liquid injection mechanism, a cleaning mechanism, and a drying mechanism are sequentially connected to the upper end of the frame body in the driving direction of the conveying mechanism (18). The upper end of the conveying belt of the conveying mechanism (18) is connected to a plurality of positioning blocks (17) arranged sequentially along its driving direction, and the positioning blocks (17) are sequentially matched with the liquid injection mechanism, the cleaning mechanism, and the drying mechanism; the cleaning mechanism includes an upper cover cleaning unit and a liquid injection hole cleaning unit, and the upper cover cleaning unit includes a motor one (8) and a brush one (9); the motor one (8) is horizontally fixed to the upper end of the frame body, and the output shaft of the motor one (8) is coaxially and fixedly connected to the mounting shaft of the brush one (9); the liquid injection hole cleaning unit includes a motor two (10) and a brush two (11); the motor two (10) is vertically fixed to the upper end of the frame body, and the output shaft of the motor two (10) is coaxially and fixedly connected to the mounting shaft of the brush two (11), and both the brush one (9) and the brush two (11) are matched with the positioning blocks (17).

2. The liquid injection hole cleaning device for lithium battery production according to claim 1, wherein: The liquid injection mechanism includes an air inlet pipe one (1), an air outlet pipe one (3), a liquid storage tank (4), and a liquid spraying nozzle (6); the liquid storage tank (4) is fixed to the upper end of the frame body, the upper end of the liquid storage tank (4) is communicated with the air outlet end of the air outlet pipe one (3), the air inlet end of the air outlet pipe one (3) is communicated with the air inlet pipe one (1), a liquid spraying nozzle (6) is provided at the lower end of the liquid storage tank (4), and the liquid spraying nozzle (6) is matched with the positioning blocks (17).

3. The liquid injection hole cleaning device for lithium battery production according to claim 2, wherein: A regulating valve (5) is provided at the feed end of the liquid spraying nozzle (6).

4. A liquid injection hole cleaning device for lithium battery production according to claim 1, characterized in that: The drying mechanism includes an air inlet pipe two (12), an air outlet pipe two (14), and an air jet nozzle (15); the air inlet pipe two (12) is fixed to the upper end of the frame body, the air outlet end of the air inlet pipe two (12) is communicated with the air inlet end of the air outlet pipe two (14), the air outlet end of the air outlet pipe two (14) is communicated with the air inlet end of the air jet nozzle (15), and the air jet nozzle (15) is matched with the positioning blocks (17).

5. The liquid injection hole cleaning device for lithium battery production according to claim 4, wherein: An infrared sensor (7) is provided on the conveying mechanism (18), and the infrared sensor (7) is arranged at the liquid injection mechanism and is signal-transmission connected to the system controller.

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