Battery formation negative pressure pipeline arrangement structure, battery formation equipment and battery formation system
By improving the arrangement of the negative pressure pipeline in battery formation, the electrolyte rises in the formation module and flows back when the negative pressure vacuum decreases, solving the problem of electrolyte loss during the formation process and improving battery performance and quality.
Patent Information
- Application Number
- CN202423096044.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2034-12-13
AI Technical Summary
In existing battery formation processes, the negative pressure pipeline layout makes it easy for electrolyte to be drawn away, resulting in high electrolyte loss during formation and affecting battery performance and quality.
Design a negative pressure pipeline layout structure for battery formation, so that the electrolyte first moves upward through the rising section in the formation module, uses gravity resistance to resist the negative pressure, and flows back into the battery after the negative pressure vacuum decreases, thereby reducing the amount of electrolyte loss.
The improved pipeline layout effectively reduces electrolyte loss during formation, increases electrolyte utilization, and improves battery performance and quality.
Smart Images
Figure CN223651438U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of battery manufacturing technology, and in particular relates to a battery formation negative pressure pipeline layout structure, battery formation equipment and battery formation system. Background Technology
[0002] In battery manufacturing, a negative pressure formation process is typically involved. This process aims to improve battery stability and safety. By applying negative pressure during charging, the internal chemical reactions of the battery can be optimized, helping to eliminate gases and moisture and extending battery life. However, during formation, some electrolyte may be drawn away due to the negative pressure. This removed electrolyte can cause crystallization and blockage in the formation nozzles and pipes, preventing the proper expulsion of gases generated during formation. This results in abnormal black spots at the battery's electrode interfaces, negatively impacting battery performance and quality.
[0003] Currently, in the negative pressure formation process of batteries, the layout structure of the negative pressure pipeline is mostly as follows: Figure 1 As shown, the formation cabinet has several formation chambers arranged along its height. The negative pressure pipeline of the formation chamber located in the upper middle part of the cabinet typically runs from top to bottom, connecting to the gas-liquid separation mechanism only after reaching the middle of the cabinet. This structural design causes the gaseous / liquid electrolyte extracted from the formation chamber located in the upper part of the cabinet to be more easily drawn into the gas-liquid separation mechanism below due to gravity. Furthermore, once the negative pressure vacuum decreases, some electrolyte in the pipeline cannot flow back into the battery, resulting in a higher electrolyte loss. Utility Model Content
[0004] The purpose of this utility model is to address the aforementioned technical problems by providing a battery formation negative pressure pipeline layout structure, battery formation equipment, and battery formation system, thereby solving the above-mentioned technical problems.
[0005] In view of this, the present invention provides a battery formation negative pressure pipeline layout structure, comprising:
[0006] A formation mechanism, comprising several layers of formation modules arranged along the height direction;
[0007] Several negative pressure pipelines, one end of each negative pressure pipeline is connected to each of the formation modules in each layer;
[0008] A gas-liquid separation mechanism is connected to the other end of each of the aforementioned negative pressure pipelines;
[0009] Each negative pressure pipeline includes an ascending section, through which the electrolyte in the formation module flows to the gas-liquid separation mechanism.
[0010] Furthermore, the upward distance of the ascending section in the vertical direction is H, where H is 1.5-2.5m.
[0011] Furthermore, the gas-liquid separation mechanism includes:
[0012] Several gas-liquid separators are connected one-to-one with each negative pressure pipeline.
[0013] Furthermore, the gas-liquid separation mechanism also includes:
[0014] Several residual liquid cups are connected one-to-one with each gas-liquid separator.
[0015] Furthermore, the gas-liquid separation mechanism also includes:
[0016] Several extraction pipes are connected one-to-one with each gas-liquid separator.
[0017] Furthermore, it also includes:
[0018] The converging pipe is used to connect each negative pressure pipeline to a corresponding gas-liquid separator.
[0019] Among them, the converging pipe is used to converge several negative pressure pipelines.
[0020] Furthermore, the formation mechanism includes a first formation module, a second formation module, a third formation module, a fourth formation module, and a fifth formation module arranged from low to high along the height direction.
[0021] Furthermore, the convergence tube is located at the same height as the third formation module.
[0022] A battery formation device, comprising the battery formation negative pressure pipeline layout structure described above.
[0023] A battery formation system includes the battery formation equipment described above.
[0024] The beneficial effects of this utility model are:
[0025] By modifying the routing of the negative pressure pipeline during formation, all electrolyte extracted from the formation module can first move upward through the rising section of the negative pressure pipeline. The resistance of gravity counteracts the negative pressure, making it difficult for the electrolyte to be drawn into the gas-liquid separation mechanism. After the vacuum level decreases, some of the electrolyte in the pipeline can flow back to the negative pressure cup and then flow into the battery, thereby effectively reducing the amount of electrolyte lost during formation. Attached Figure Description
[0026] Figure 1 This utility model relates to the battery formation negative pressure pipeline layout structure in the prior art.
[0027] Figure 2 This is the improved battery formation negative pressure pipeline layout structure in this utility model;
[0028] The markings in the diagram are as follows:
[0029] 1. Formation mechanism; 11. First formation module; 12. Second formation module; 13. Third formation module; 14. Fourth formation module; 15. Fifth formation module; 2. Gas-liquid separator; 3. Converging pipe; Z, height direction. Detailed Implementation
[0030] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0031] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.
[0032] Example 1:
[0033] This embodiment provides a battery formation negative pressure pipeline layout structure, including:
[0034] Formation mechanism 1, which includes several layers of formation modules arranged along the height direction Z;
[0035] Several negative pressure pipelines, one end of each negative pressure pipeline is connected to each of the formation modules in each layer;
[0036] A gas-liquid separation mechanism is connected to the other end of each of the aforementioned negative pressure pipelines;
[0037] Each negative pressure pipeline includes an ascending section, through which the electrolyte in the formation module flows to the gas-liquid separation mechanism.
[0038] In this technical solution, the formation mechanism 1 can be a formation cabinet, which includes several formation modules. These modules are arranged along the height direction Z on the formation cabinet. Each formation module has a corresponding negative pressure pipeline, and each module is connected to the gas-liquid separation mechanism via the negative pressure pipeline. Each negative pressure pipeline includes an ascending section, the length of which is set according to the specific production environment. The electrolyte extracted from the formation module flows through the ascending section before reaching the gas-liquid separation mechanism, requiring it to overcome gravity and move upwards. The electrolyte's own gravity helps prevent it from being drawn away by the negative pressure.
[0039] Furthermore, the ascent distance in the Z direction of the ascending section is H, where H is 1.5-2.5m. This structural design effectively reduces the amount of electrolyte drawn into the gas-liquid separation mechanism, significantly improves the liquid loss during formation in the formation mechanism 1, and increases electrolyte utilization.
[0040] In summary, by modifying the routing of the negative pressure pipeline during formation, all electrolyte extracted from the formation module can first move upward through the rising section of the negative pressure pipeline. The resistance of gravity counteracts the negative pressure, making it difficult for the electrolyte to be drawn into the gas-liquid separation mechanism. After the vacuum level decreases, some of the electrolyte in the pipeline can flow back to the negative pressure cup and then flow into the battery, thereby effectively reducing the amount of electrolyte lost during formation.
[0041] Example 2:
[0042] This embodiment provides a battery formation negative pressure pipeline layout structure, which, in addition to the technical solutions of the above embodiments, also has the following technical features.
[0043] Furthermore, the gas-liquid separation mechanism includes:
[0044] Several gas-liquid separators 2 are connected one-to-one with each negative pressure pipeline.
[0045] Furthermore, the gas-liquid separation mechanism also includes:
[0046] Several residual liquid cups are connected one-to-one with each gas-liquid separator 2.
[0047] Furthermore, the gas-liquid separation mechanism also includes:
[0048] Several suction pipes are connected one-to-one with each gas-liquid separator 2.
[0049] In this technical solution, each negative pressure pipeline extends from the converging pipe 3 and is connected to the corresponding gas-liquid separator 2. The electrolyte flows into the gas-liquid separator 2 for separation. The gas separated by the gas-liquid separator 2 is discharged through the exhaust pipe, while the electrolyte separated by the gas-liquid separator 2 flows into the residual liquid cup for collection, disposal, or recycling.
[0050] Example 3:
[0051] This embodiment provides a battery formation negative pressure pipeline layout structure, which, in addition to the technical solutions of the above embodiments, also has the following technical features.
[0052] Furthermore, it also includes:
[0053] The converging pipe 3 is used to connect each negative pressure pipeline to each gas-liquid separator 2.
[0054] Among them, the converging pipe 3 is used to converge several negative pressure pipelines.
[0055] In this technical solution, the pipeline routes of each negative pressure pipeline pass through the converging pipe 3 after passing through the rising section, and then connect to the gas-liquid separation mechanism. The converging pipe 3 is used to gather several negative pressure pipelines together, making the pipeline layout more neat and orderly, reducing messy pipeline distribution, effectively saving space and improving space utilization.
[0056] Example 4:
[0057] This embodiment provides a battery formation negative pressure pipeline layout structure, which, in addition to the technical solutions of the above embodiments, also has the following technical features.
[0058] Furthermore, the formation mechanism 1 includes a first formation module 11, a second formation module 12, a third formation module 13, a fourth formation module 14, and a fifth formation module 15 arranged from low to high along the height direction Z.
[0059] Furthermore, the converging tube 3 is located at the same height as the third formation module 13.
[0060] In this technical solution, such as Figure 2 As shown, taking a formation mechanism with five formation modules as an example, the formation cabinet is equipped with a first formation module 11, a second formation module 12, a third formation module 13, a fourth formation module 14 and a fifth formation module 15, which are arranged from low to high along the height direction Z. The converging pipe 3 is located in the workshop and at the same height as the third formation module 13.
[0061] The first formation module 11 is located on the first layer inside the formation cabinet and is below the converging pipe 3. Its corresponding negative pressure pipeline first goes up through the rising section to reach the height position of the third formation module 13, and then connects to the gas-liquid separation mechanism.
[0062] The second formation module 12 is located on the second layer inside the formation cabinet and is below the converging pipe 3. Its corresponding negative pressure pipeline first goes up through the rising section to the height position of the third formation module 13 before connecting to the gas-liquid separation mechanism.
[0063] The third formation module 13 is located on the third layer inside the formation cabinet and is at the same height as the converging pipe 3. Its corresponding negative pressure pipeline first passes through the fourth formation module 14 and the fifth formation module 15 from bottom to top via an upward section and reaches the top of the workshop. Then, it is set up a downward section to return to the height position of the converging pipe 3 from top to bottom and then connects to the gas-liquid separation mechanism.
[0064] The fourth formation module 14 is located on the fourth layer inside the formation cabinet and is above the converging pipe 3. Its corresponding negative pressure pipeline first passes through the fifth formation module 15 from bottom to top via an upward section and reaches the top of the workshop. Then, it is set up a downward section from top to bottom to reach the height of the converging pipe 3 and then connects to the gas-liquid separation mechanism.
[0065] The fifth formation module 15 is located on the fifth layer inside the formation cabinet and is above the manifold 3. Its corresponding negative pressure pipeline first reaches the top of the workshop from bottom to top through a rising section, and then reaches the height of the manifold 3 from top to bottom through a descending section, and then connects to the manifold 3.
[0066] In summary, the gaseous / liquid electrolyte extracted from the first formation module 11, the second formation module 12, the third formation module 13, the fourth formation module 14, and the fifth formation module 15 will all be subject to the resistance of gravity before flowing to the gas-liquid separation mechanism, which allows some of the electrolyte to flow back into the battery, effectively reducing the amount of electrolyte loss.
[0067] Example 5:
[0068] This embodiment provides a battery formation device, including the battery formation negative pressure pipeline layout structure described in embodiments 1-4 above.
[0069] Example 6:
[0070] This embodiment provides a battery formation system, including the battery formation equipment described in Embodiment 5 above.
[0071] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.
Claims
1. A battery formation negative pressure pipeline layout structure, characterized in that, include: The formation mechanism (1) includes several layers of formation modules arranged along the height direction (Z); Several negative pressure pipelines, one end of each negative pressure pipeline is connected to each of the formation modules in each layer; A gas-liquid separation mechanism is connected to the other end of each of the negative pressure pipelines; Each of the negative pressure pipelines includes an ascending section, through which the electrolyte in the formation module flows to the gas-liquid separation mechanism.
2. The battery formation negative pressure pipeline layout structure according to claim 1, characterized in that, The ascending distance of the ascending section in the height direction (Z) is H, where H is 1.5-2.5m.
3. The battery formation negative pressure pipeline layout structure according to claim 1, characterized in that, The gas-liquid separation mechanism includes: Several gas-liquid separators (2) are provided, and each gas-liquid separator (2) is connected to each negative pressure pipeline in a one-to-one correspondence.
4. The battery formation negative pressure pipeline layout structure according to claim 3, characterized in that, The gas-liquid separation mechanism further includes: Several residual liquid cups are connected one-to-one with each of the gas-liquid separators (2).
5. The battery formation negative pressure pipeline layout structure according to claim 3, characterized in that, The gas-liquid separation mechanism further includes: Several suction pipes are connected one-to-one with each of the gas-liquid separators (2).
6. The battery formation negative pressure pipeline layout structure according to claim 3, characterized in that, Also includes: The converging pipe (3) is used to connect each negative pressure pipeline to each gas-liquid separator (2). The converging pipe (3) is used to converge several negative pressure pipelines.
7. The battery formation negative pressure pipeline layout structure according to claim 6, characterized in that, The formation mechanism (1) includes a first formation module (11), a second formation module (12), a third formation module (13), a fourth formation module (14), and a fifth formation module (15) arranged from low to high along the height direction (Z).
8. The battery formation negative pressure pipeline layout structure according to claim 7, characterized in that, The converging tube (3) is located at the same height as the third formation module (13).
9. A battery formation apparatus, characterized in that, The battery formation negative pressure pipeline layout structure includes any one of claims 1-8.
10. A battery formation system, characterized in that, Includes the battery formation equipment described in claim 9 above.