Lithium battery liquid injection equipment

Abstract

The utility model relates to lithium cell liquid injection technical field especially is a kind of lithium cell liquid injection equipment, including liquid injection platform, the liquid injection platform one side inside is equipped with liquid storage bin, the liquid storage bin inside bottom is provided with motor, the output end above of motor is equipped with the stirring assembly in the liquid storage bin inside for preventing electrolyte stratification, while ensuring that it maintains set temperature;The liquid storage bin inside is communicated with connecting pipe from liquid injection platform bottom, the connecting pipe has two and is fixed in the liquid injection platform one side by fixed plate, the other end of the connecting pipe is connected with the liquid injection component for carrying out lithium cell liquid injection. The utility model can effectively avoid electrolyte stratification by stirring assembly, ensure that electrolyte performance is uniform, maintain set temperature then help to improve the activity and stability of electrolyte.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery liquid filling technology, and in particular to a lithium battery liquid filling device. Background Technology

[0002] A battery is a type of battery that uses lithium metal or lithium alloy as the positive and negative electrode materials and a non-aqueous electrolyte solution. Especially the rapidly developing pouch lithium battery, due to its advantages such as being lightweight and thin, having a long lifespan, good safety performance, a stable discharge platform, and being environmentally friendly and pollution-free, is widely used in various fields such as electric bicycles, electric cars, electric toys, and solar photovoltaic power generation systems. In real-world lithium battery production, electrolyte needs to be injected into the battery through the injection port on top.

[0003] For example, the lithium battery liquid filling device disclosed in Chinese Patent No. CN221596718U works as follows: "It includes a housing and a liquid filling head. A protective shell is fixedly connected to the top of the housing. A fixing plate is fixedly connected to the inner cavity of the housing. A motor is fixedly installed on the top of the fixing plate. A rotating rod is fixedly connected to the output end of the motor. A turntable is fixedly connected to the top of the rotating rod. A limit groove is formed on the top of the turntable. A support frame is fixedly connected to the rear end of the top of the protective shell. A first electric telescopic rod is fixedly connected to the top of the support frame. A connecting plate is fixedly connected to the bottom of the first electric telescopic rod. This lithium battery liquid filling device uses a motor to drive the turntable to rotate in cooperation with the rotating rod." The device uses a turntable to rotate the lithium battery inside the limiting groove, stopping when it reaches a designated position. However, this device has several drawbacks. First, it doesn't control the temperature of the electrolyte storage environment. In actual production environments, the temperature is not constant, and fluctuations in ambient temperature directly cause changes in electrolyte viscosity. This leads to problems such as inaccurate injection volume and uneven injection speed during the injection process. Second, due to the lack of effective stirring or homogenization measures, the electrolyte is prone to stratification during normal storage, ultimately resulting in inconsistent battery performance after injection. This reduces the overall quality and consistency of the battery products, failing to meet the needs of large-scale production of high-quality lithium batteries. Utility Model Content

[0004] To overcome the shortcomings of the existing technology, this utility model provides a lithium battery electrolyte filling device. The stirring component can effectively prevent electrolyte stratification, ensure uniform electrolyte performance, and maintain the set temperature to help improve the activity and stability of the electrolyte.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a lithium battery electrolyte filling device, including an filling platform, a storage tank inside one side of the filling platform, a motor at the bottom of the storage tank, and a stirring component above the output end of the motor inside the storage tank to prevent electrolyte stratification and maintain a set temperature; the storage tank is connected to a connecting pipe from the bottom of the filling platform, two of which are fixed to one side of the filling platform by fixing plates, and the other end of the connecting pipe is connected to an filling component for filling lithium batteries.

[0006] As a preferred technical solution of this utility model, the liquid injection assembly includes a rotating shaft and a cover plate. A liquid injection groove is formed on one side of the liquid storage tank above the liquid injection platform. Several placement slots for lithium batteries are formed inside the liquid injection groove. A rotating shaft is rotatably mounted on one side of the liquid injection groove. A cover plate is fixedly connected to the rotating shaft. A flow chamber is fixedly mounted on one end of the cover plate. The flow chamber is connected to connecting pipes on both sides. Several liquid injection ports corresponding to the placement slots are formed on the surface of the cover plate. A connecting head is fixedly mounted on the upper part of each liquid injection port. The connecting heads are connected to each other via connecting pipes. One end of the connecting pipe is connected to the flow chamber. Several limiting grooves are formed below the connecting heads inside the liquid injection port. A fixing post is fixedly mounted inside the limiting grooves. A spring is sleeved around the fixing post. A connecting block is movably sleeved on one end of the spring around the fixing post. A liquid injection head is movably mounted at the lower end of the liquid injection port. The connecting head and the liquid injection head are connected via a telescopic pipe. The liquid injection head is fixedly connected to the connecting block.

[0007] As a preferred technical solution of this utility model, the stirring assembly includes a rotating column, a spiral stirring plate, and a temperature control rod. The output end of the motor is fixedly connected to the rotating column through the liquid injection platform. The spiral stirring plate is fixedly sleeved around the rotating column. Several temperature control rods are fixedly installed inside the liquid storage tank. The temperature control rods are electrically connected to the temperature control device.

[0008] As a preferred embodiment of this utility model, a gap is left between the spiral stirring plate and the temperature control rod, and the temperature control rod is evenly arranged around the spiral stirring plate.

[0009] As a preferred embodiment of this utility model, temperature sensors are provided at both the upper and lower ends of the liquid storage tank, and the temperature sensors are electrically connected to the temperature control device.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: by opening a storage chamber inside one side of the injection platform, and installing a motor and a stirring component at the bottom of the storage chamber to prevent electrolyte stratification and maintain a set temperature, and connecting the injection component for lithium battery injection with a connecting pipe, stable storage and injection of electrolyte are achieved. The stirring component can effectively prevent electrolyte stratification and ensure uniform electrolyte performance. Maintaining the set temperature helps to improve the activity and stability of the electrolyte, thereby improving the injection quality and battery performance of the lithium battery. The connection design between the connecting pipe and the injection component allows the electrolyte to be smoothly delivered to the injection position, improving injection efficiency. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural cross-sectional view of the present invention; Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0012] The components are as follows: 10. Injection platform; 11. Storage tank; 12. Motor; 13. Temperature control device; 14. Connecting pipe; 15. Fixing plate; 20. Injection tank; 21. Placement tank; 22. Rotating shaft; 23. Cover plate; 24. Flow chamber; 25. Injection port; 26. Connecting head; 27. Connecting pipe; 28. Telescopic pipe; 29. ​​Restriction groove; 210. Fixing column; 211. Spring; 212. Connecting block; 213. Injection head; 30. Rotating column; 31. Spiral stirring plate; 32. Temperature control rod; 33. Temperature sensor. Detailed Implementation

[0013] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this utility model. Unless otherwise specified, the experimental methods in the following embodiments are conventional methods, and the materials and reagents used in the following embodiments are commercially available unless otherwise specified.

[0014] Please refer to Figure 1-3As shown, this utility model provides a lithium battery electrolyte filling device, including an filling platform 10, a storage chamber 11 with an opening inside one side of the filling platform 10, a motor 12 installed at the bottom of the storage chamber 11, and a stirring component installed above the output end of the motor 12 inside the storage chamber 11 to prevent electrolyte stratification and maintain a set temperature; the storage chamber 11 is connected to a connecting pipe 14 from the bottom of the filling platform 10, and two ends of the connecting pipe 14 are fixed to one side of the filling platform 10 by fixing plates 15, and the other end of the connecting pipe 14 is connected to an electrolyte filling component for lithium battery filling.

[0015] In this case, by opening a storage chamber 11 inside one side of the liquid injection platform 10, and installing a motor 12 and a stirring component for preventing electrolyte stratification and maintaining a set temperature at the bottom of the storage chamber 11, and connecting the liquid injection component for lithium battery liquid injection using a connecting pipe 14, stable storage and liquid injection of electrolyte are achieved. The stirring component can effectively prevent electrolyte stratification and ensure uniform electrolyte performance. Maintaining the set temperature helps to improve the activity and stability of the electrolyte, thereby improving the liquid injection quality and battery performance of the lithium battery. The connection design between the connecting pipe 14 and the liquid injection component allows the electrolyte to be smoothly delivered to the liquid injection position, improving the liquid injection efficiency.

[0016] The liquid injection assembly includes a rotating shaft 22 and a cover plate 23. A liquid injection tank 20 is formed on one side of the liquid storage tank 11 above the liquid injection platform 10. Several placement slots 21 for lithium batteries are formed inside the liquid injection tank 20. A rotating shaft 22 is rotatably mounted on one side of the liquid injection tank 20, and a cover plate 23 is fixedly connected to the rotating shaft 22. A flow chamber 24 is fixedly mounted on the top of one end of the cover plate 23. The flow chamber 24 is connected to a connecting pipe 14 on both sides. Several liquid injection ports 25 corresponding to the placement slots 21 are formed on the surface of the cover plate 23. A connecting head 26 is fixedly mounted on the top of the inside of each liquid injection port 25. The two are connected by a connecting pipe 27. One end of the connecting pipe 27 is connected to the flow chamber 24. Several limiting grooves 29 are provided inside the injection port 25 below the connecting head 26. A fixing post 210 is fixedly installed inside the limiting groove 29. A spring 211 is sleeved around the fixing post 210. A connecting block 212 is movably sleeved around the fixing post 210 at one end of the spring 211. An injection head 213 is movably installed at the lower end inside the injection port 25. The connecting head 26 and the injection head 213 are connected by a telescopic pipe 28. The injection head 213 is fixedly connected to the connecting block 212.

[0017] By opening an injection tank 20 above the injection platform 10 and setting a placement slot 21 for placing lithium batteries, the positioning and placement of lithium batteries are facilitated. The rotating shaft 22 is connected to the cover plate 23 for easy opening and closing of the injection tank 20. The flow chamber 24 is connected to the connecting pipe 14 on both sides, allowing the electrolyte to enter the flow chamber 24. The surface of the cover plate 23 has an injection port 25 corresponding to the placement slot 21, and the internal components include a connecting head 26, a connecting pipe 27, a limiting slot 29, a fixing column 210, a spring 211, a connecting block 212, and an injection head 213, which realizes the injection of electrolyte. When injection is performed, the injection head 213 can adapt to the position of the injection port 25 of different lithium batteries under the action of the spring 211 and the connecting block 212, ensuring that the electrolyte is accurately injected into the lithium battery, improving the accuracy and reliability of injection, and reducing electrolyte waste.

[0018] The stirring assembly includes a rotating column 30, a spiral stirring plate 31, and a temperature control rod 32. The output end of the motor 12 passes through the liquid injection platform 10 and is fixedly connected to the rotating column 30. The spiral stirring plate 31 is fixedly sleeved around the rotating column 30. Several temperature control rods 32 are fixedly installed inside the liquid storage tank 11. The temperature control rods 32 are electrically connected to the temperature control device 13.

[0019] By using the rotating column 30 and spiral stirring plate 31 in the stirring assembly, the electrolyte in the storage tank 11 can be fully stirred under the drive of the motor 12, effectively preventing electrolyte stratification and ensuring uniform mixing of electrolyte components, thereby improving the quality and stability of the electrolyte. At the same time, several temperature control rods 32 installed in the storage tank 11 are electrically connected to the temperature control device 13, which can accurately control the temperature of the electrolyte as needed, maintaining the electrolyte within the optimal operating temperature range, which is beneficial to improving the electrolyte injection effect of lithium batteries and the overall performance of the batteries, and extending the battery's service life.

[0020] A gap is left between the spiral stirring plate 31 and the temperature control rod 32, and the temperature control rod 32 is evenly arranged around the spiral stirring plate 31.

[0021] By leaving a gap between the spiral stirring plate 31 and the temperature control rod 32, and with the temperature control rod 32 evenly distributed around the spiral stirring plate 31, the spiral stirring plate 31 will not interfere with the temperature control rod 32 when stirring the electrolyte, ensuring smooth stirring. At the same time, the evenly distributed temperature control rod 32 can more evenly control the temperature of the electrolyte, making the temperature of each part of the electrolyte more consistent. This avoids the impact of excessively high or low local temperatures on the performance of the electrolyte, further improving the quality and stability of the electrolyte, which is beneficial to improving the electrolyte filling quality and battery performance of lithium batteries.

[0022] Temperature sensors 33 are installed at both the top and bottom of the liquid storage tank 11, and the temperature sensors 33 are electrically connected to the temperature control device 13.

[0023] By installing temperature sensors 33 at both the top and bottom of the liquid storage tank 11 and electrically connecting them to the temperature control device 13, the temperature at different locations within the liquid storage tank 11 can be monitored in real time and accurately. By feeding the temperature information back to the temperature control device 13, the temperature control device 13 can adjust the working state of the temperature control rod 32 in a timely manner according to the actual temperature conditions, thereby achieving precise control of the electrolyte temperature. This ensures that the electrolyte is always within a suitable temperature range, avoiding the impact of excessive temperature fluctuations on the performance of the electrolyte and the quality of the lithium battery filling, and improving the reliability and stability of the entire filling equipment.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A lithium battery liquid injection device, comprising an injection platform (10), characterized in that: a liquid storage chamber (11) is provided inside one side of the injection platform (10), a motor (12) is provided at the bottom of the liquid storage chamber (11), and a stirring component is provided above the output end of the motor (12) inside the liquid storage chamber (11) to prevent the electrolyte from separating and to ensure that it maintains a set temperature; The liquid storage tank (11) is connected to the bottom of the liquid injection platform (10) and the connecting pipe (14). The connecting pipe (14) has two parts that are fixed to one side of the liquid injection platform (10) by fixing plates (15). The other end of the connecting pipe (14) is connected to a liquid injection assembly for injecting lithium battery liquid.

2. The lithium battery electrolyte filling device according to claim 1, characterized in that: The liquid injection assembly includes a rotating shaft (22) and a cover plate (23). A liquid injection tank (20) is provided on one side of the liquid storage chamber (11) above the liquid injection platform (10). Several placement slots (21) for placing lithium batteries are provided inside the liquid injection tank (20). A rotating shaft (22) is rotatably mounted on one side of the liquid injection tank (20). The rotating shaft (22) is fixedly connected to the cover plate (23). A flow chamber (24) is fixedly mounted above one end of the cover plate (23). The flow chamber (24) is connected to a connecting pipe (14) on both sides. Several liquid injection ports (25) corresponding to the placement slots (21) are provided on the surface of the cover plate (23). A connecting head (26) is fixedly mounted above the inside of each liquid injection port (25). 6) The two are connected by a connecting pipe (27). One end of the connecting pipe (27) is connected to the flow chamber (24). The injection port (25) has several limiting grooves (29) below the connecting head (26). A fixed column (210) is fixedly installed inside the limiting groove (29). A spring (211) is sleeved around the fixed column (210). A connecting block (212) is movably sleeved around the fixed column (210) at one end of the spring (211). An injection head (213) is movably installed at the lower end inside the injection port (25). The connecting head (26) and the injection head (213) are connected by a telescopic pipe (28). The injection head (213) is fixedly connected to the connecting block (212).

3. The lithium battery electrolyte filling device according to claim 1, characterized in that: The stirring assembly includes a rotating column (30), a spiral stirring plate (31), and a temperature control rod (32). The output end of the motor (12) is fixedly connected to the rotating column (30) through the liquid injection platform (10). The spiral stirring plate (31) is fixedly sleeved around the rotating column (30). Several temperature control rods (32) are fixedly installed inside the liquid storage tank (11). The temperature control rods (32) are electrically connected to the temperature control device (13).

4. The lithium battery electrolyte filling device according to claim 3, characterized in that: There is a gap between the spiral stirring plate (31) and the temperature control rod (32), and the temperature control rod (32) is evenly arranged around the spiral stirring plate (31).

5. The lithium battery electrolyte filling device according to claim 1, characterized in that: Temperature sensors (33) are installed at both the top and bottom of the liquid storage tank (11), and the temperature sensors (33) are electrically connected to the temperature control device (13).

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