Negative pressure exhaust device, battery formation negative pressure system and battery formation equipment
By setting a connecting pipe between the manifold and the exhaust pipe and adjusting the suction distribution, the problem of uneven exhaust effect of the negative pressure cup in the lithium battery formation equipment is solved, a more uniform exhaust effect is achieved, and the safety and efficiency of the battery formation process are improved.
Patent Information
- Application Number
- CN202422398788.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-09-12
- Estimated Expiration
- 2034-09-27
AI Technical Summary
In lithium battery formation equipment, the exhaust effects of different negative pressure cups vary greatly, affecting exhaust uniformity.
By setting up several connecting pipes between the manifold and the exhaust pipe, the flow cross-sectional area of the connecting pipe close to the exhaust system is smaller than that of the connecting pipe far away from the exhaust system, ensuring that the suction distribution at different positions of the manifold is more uniform. When the exhaust system is used to extract air from one end of the exhaust pipe, the uniformity of the exhaust effect of multiple negative pressure components is improved.
The exhaust effect of the negative pressure component is made more uniform, the exhaust difference at different positions is reduced, and the gas treatment efficiency and safety during the battery formation process are improved.
Smart Images
Figure CN223333944U_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the field of battery technology, and specifically relates to a negative pressure exhaust device, a battery formation negative pressure system, and a battery formation equipment. Background Art
[0002] During the lithium battery manufacturing process, it needs to go through a formation treatment. During the formation process, excess gas and electrolyte bubbles will be generated inside the battery and discharged from the battery filling port. If the gas is directly discharged into the workshop environment, it will cause direct harm to the human body and cause pollution and corrosion to the equipment.
[0003] Most lithium battery formation equipment uses multiple negative pressure cups for gas-liquid separation. Each negative pressure cup is connected to an exhaust duct via a vacuum pipe. The exhaust duct then connects to a vacuum system, allowing the system to remove excess gas from the battery. However, due to the varying distances between the negative pressure cups connected to the exhaust duct and the vacuum system, the exhaust efficiency of different negative pressure cups varies significantly. Utility Model Content
[0004] The present application aims to provide a negative pressure exhaust device, a battery formation negative pressure system and a battery formation equipment, which can solve the problem that in the formation equipment of the related art, the exhaust effects of different negative pressure cups vary greatly.
[0005] In order to solve the above technical problems, this application is implemented as follows:
[0006] In the first aspect, an embodiment of the present application proposes a negative pressure exhaust device, comprising: a manifold, an exhaust pipe and a plurality of connecting pipes; the manifold is provided with a plurality of connectors, the connectors being used to connect a negative pressure component, the exhaust pipe having a first end and a second end relative to each other, the first end being used to connect to an external air extraction system; a plurality of the connecting pipes are sequentially spaced between the exhaust pipe and the manifold, the exhaust pipe being connected to the manifold through the connecting pipes; wherein the flow cross-sectional area of the connecting pipe near the first end is smaller than the flow cross-sectional area of the connecting pipe near the second end.
[0007] Optionally, there are at least three communicating pipes, the outermost communicating pipe close to the first end is the first pipe, the outermost communicating pipe close to the second end is the second pipe, and the communicating pipe located between the first pipe and the second pipe is the third pipe, and the flow cross-sectional areas of the first pipe, the third pipe and the second pipe increase successively.
[0008] Optionally, the flow cross-sectional areas of the plurality of communicating pipes increase gradually from the first end to the second end.
[0009] Optionally, the ratio of the flow cross-sectional areas of two adjacent communicating pipes is 1.1-2.
[0010] Optionally, a plurality of the connecting pipes are arranged at equal intervals.
[0011] Optionally, the distance between two adjacent communicating pipes is 100 mm to 400 mm.
[0012] Optionally, a one-way valve is provided at the first end, and the one-way valve is unidirectional from the second end to the first end.
[0013] Optionally, the axis of the manifold is parallel to the axis of the exhaust pipe;
[0014] And / or, the axis of the communicating pipe is perpendicular to the axis of the manifold or the exhaust pipe.
[0015] In a second aspect, an embodiment of the present application proposes a battery formation negative pressure system, comprising: a negative pressure component, an exhaust system, and the negative pressure exhaust device described in the first aspect above, wherein the negative pressure component is connected to the connector, and the exhaust system is connected to the first end.
[0016] In a third aspect, an embodiment of the present application provides a battery formation device, comprising the negative pressure exhaust device described in the first aspect, or comprising the battery formation negative pressure system described in the second aspect.
[0017] In the present application, the negative pressure components can be connected to the plurality of connectors provided on the manifold, so that the manifold can be used to collect the gases separated by the plurality of negative pressure components, and then guide the gases to the exhaust pipe through the connecting pipe, so that the gas in the exhaust pipe can be extracted by the exhaust system. In addition, by setting the flow cross-sectional area of the connecting pipe away from the exhaust system to be larger than the flow cross-sectional area of the connecting pipe close to the exhaust system, when the exhaust system is used to extract gas from one end of the exhaust pipe, the suction force distribution at different positions of the manifold can be more uniform, thereby improving the uniformity of the exhaust effect of the plurality of negative pressure components.
[0018] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:
[0020] Figure 1 is a schematic diagram of a negative pressure exhaust device according to an embodiment of the present application;
[0021] Figure 2is a schematic diagram of another negative pressure exhaust device according to an embodiment of the present application;
[0022] Figure 3 It is a three-dimensional diagram of a negative pressure exhaust device according to an embodiment of the present application.
[0023] Reference numerals:
[0024] 10: Manifold; 11: Connector; 20: Exhaust pipe; 20a: First end; 20b: Second end; 30: Connecting pipe; 40: One-way valve; 50: Negative pressure assembly. DETAILED DESCRIPTION
[0025] The embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.
[0026] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly refer to one or more of the features. Throughout the description of this application, unless otherwise specified, "plurality" means two or more. Furthermore, "and / or" in the specification and claims refers to at least one of the connected entities, and the character " / " generally indicates an "or" relationship between the connected entities.
[0027] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0028] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.
[0029] The negative pressure exhaust device, battery formation negative pressure system and battery formation equipment provided in the embodiments of the present application are described in detail below with reference to the accompanying drawings through specific embodiments and their application scenarios.
[0030] like Figures 1 to 3 As shown, the negative pressure exhaust device according to some embodiments of the present application includes: a manifold 10, an exhaust pipe 20 and a plurality of connecting pipes 30; a plurality of connectors 11 are provided on the manifold 10, the connectors 11 are used to connect the negative pressure component 50, the exhaust pipe 20 has a first end 20a and a second end 20b relative to each other, and the first end 20a is used to connect to an external air extraction system; a plurality of connecting pipes 30 are arranged in sequence between the exhaust pipe 20 and the manifold 10, and the exhaust pipe 20 is connected to the manifold 10 through the connecting pipes 30; wherein, the flow cross-sectional area of the connecting pipe 30 near the first end 20a is smaller than the flow cross-sectional area of the connecting pipe 30 near the second end 20b.
[0031] In the embodiment of the present application, the negative pressure components 50 can be connected to the plurality of connectors 11 provided on the manifold 10, so that the manifold 10 can be used to collect the gases separated by the plurality of negative pressure components 50, and then guide the gases to the exhaust pipe 20 through the connecting pipe 30, so that the gas in the exhaust pipe 20 can be extracted by the exhaust system. In addition, by setting the flow cross-sectional area of the connecting pipe 30 away from the exhaust system to be larger than the flow cross-sectional area of the connecting pipe 30 close to the exhaust system, when the exhaust system is used to extract gas from one end of the exhaust pipe 20, the suction force distribution at different positions of the manifold 10 can be ensured to be more uniform, thereby improving the uniformity of the exhaust effect of the plurality of negative pressure components 50.
[0032] In some embodiments, the negative pressure exhaust device of the present invention can be used in the battery formation process of the battery manufacturing process. The negative pressure assembly 50 can include a formation negative pressure cup. During the battery formation process, by connecting the formation negative pressure cup to the battery, the gas generated inside the battery can be discharged and the exhaust gas can be separated from the electrolyte.
[0033] Specifically, multiple connectors 11 can be set on the manifold 10, each connector 11 can be connected to a negative pressure component 50 to collect the gas discharged from multiple negative pressure components 50 into the manifold 10, and multiple connectors 11 can be arranged in sequence along the axial direction of the manifold 10.
[0034] Furthermore, an exhaust pipe 20 can be provided, and the exhaust pipe 20 and the manifold 10 are connected by a plurality of connecting pipes 30 so as to guide the gas in the manifold 10 into the exhaust pipe 20, and then use an external exhaust system to remove the gas in the exhaust pipe 20, thereby achieving the exhaust function during the battery formation process.
[0035] Among them, among several connecting pipes, the flow cross-sectional area of the connecting pipe 30 close to the external exhaust system is set to be smaller than the flow cross-sectional area of the connecting pipe 30 away from the external exhaust system, so as to adjust the suction force at different positions of the manifold, thereby making the suction force at different positions of the manifold 10 more uniform, thereby improving the exhaust effect of multiple negative pressure components 50.
[0036] It is understandable that in a conventional negative pressure exhaust device, only an exhaust pipe 20 is typically provided, which is connected to multiple negative pressure components 50, and further connected to an exhaust system, with the exhaust system simultaneously exhausting multiple negative pressure components 50 through the exhaust pipe 20. However, with this structure, the farther the exhaust pipe 20 is from the exhaust system, the smaller the suction force it receives, resulting in a poorer exhaust effect for the negative pressure component 50 at the corresponding position, and thus causing significant differences in the exhaust effect of different negative pressure components 50 on the battery.
[0037] The negative pressure exhaust device of the present application, by providing a manifold 10 and an exhaust pipe 20, which are connected by a plurality of connecting pipes 30, allows the manifold 10 to first combine the gas exhausted from the multiple negative pressure components 50, and then guide the gas through the connecting pipes 30 to the exhaust pipe 20 for exhaust. This can improve the uniformity of exhaust from the multiple negative pressure components 50. Furthermore, by setting the flow cross-sectional area of the connecting pipes 30 closer to the external exhaust system to be smaller than the flow cross-sectional area of the connecting pipes 30 farther away from the external exhaust system, the suction force at different positions of the manifold 10 can be further balanced, thereby improving the uniformity of exhaust from the different negative pressure components 50.
[0038] Alternatively, as Figure 3 As shown, there are at least three communicating pipes 30, the outermost communicating pipe 30 close to the first end 20a is the first pipe, the outermost communicating pipe 30 close to the second end 20b is the second pipe, and the communicating pipe 30 located between the first pipe and the second pipe is the third pipe, and the flow cross-sectional areas of the first pipe, the third pipe and the second pipe increase in sequence.
[0039] In an embodiment of the present application, at least three connecting pipes 30 are arranged between the manifold 10 and the exhaust pipe 20, and the connecting pipes 30 on both sides are arranged to have different flow cross-sections from the flow pipe in the middle, thereby balancing the suction at different positions of the manifold 10 and ensuring the uniformity of the suction distribution at both end portions and the middle portion of the manifold 10, thereby facilitating the smooth flow of gas at different positions between the manifold 10 and the exhaust pipe 20, and improving the exhaust effect of different negative pressure components 50.
[0040] It is understandable that the number of the third pipes can be one or more than two, and the number of the third pipes can be flexibly set according to the length of the manifold 10 .
[0041] Furthermore, when there are at least two third pipes, the flow cross-sectional areas of the at least two third pipes may be the same or different, which is not limited in this embodiment of the present application.
[0042] In some embodiments, when there are at least two third pipes, the flow cross-sectional areas of the at least two third pipes increase gradually from the first end 20a to the second end 20b to improve the uniformity of the suction force at different positions of the manifold 10 .
[0043] Alternatively, as Figure 1 and Figure 2 As shown, the flow cross-sectional areas of the plurality of communication pipes 30 increase gradually from the first end 20 a to the second end 20 b of the exhaust pipe 20 .
[0044] In an embodiment of the present application, the first end 20a of the exhaust pipe 20 is connected to the exhaust system. By setting the direction from the first end 20a to the second end 20b of the exhaust pipe 20, the flow cross-sectional area of the plurality of connecting pipes 30 is increased, so that the suction force at different positions of the manifold 10 is more uniform, so as to improve the uniformity of the exhaust effect of different negative pressure components 50.
[0045] Optionally, the ratio of the flow cross-sectional area of two adjacent communicating pipes 30 is 1.1-2. That is, in two adjacent communicating pipes 30, the ratio of the flow cross-sectional area of the communicating pipe 30 away from the first end 20a to the flow cross-sectional area of the communicating pipe 30 close to the second end 20b is 1.1-2.
[0046] Exemplarily, the ratio of the flow cross-sectional areas can be set to any value such as 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2.0, or a range between any two values.
[0047] In the embodiment of the present application, a certain difference in the cross-sectional area between two adjacent connecting pipes 30 is provided to balance the suction force at different locations on the manifold 10. However, if the ratio of the cross-sectional area between the two adjacent connecting pipes 30 is too large, the uniformity of the suction force distribution at different locations on the manifold 10 will be affected. Therefore, in the present application, a reasonable range of values for the cross-sectional area ratio between the two adjacent connecting pipes 30 is set to ensure the exhaust effect at different locations on the manifold 10.
[0048] Alternatively, as Figure 2 As shown, a plurality of communication pipes 30 are arranged at equal intervals. By arranging a plurality of communication pipes 30 at equal intervals, the exhaust effect at different positions between the manifold 10 and the exhaust pipe 20 can be made more uniform.
[0049] Alternatively, as Figure 2 As shown, the spacing between two adjacent communicating pipes 30 is 100 mm to 400 mm. Specifically, the spacing can be set to any value such as 100 mm, 150 mm, 180 mm, 200 mm, 250 mm, 300 mm, 350 mm, 400 mm, or a range between any two values.
[0050] It can be understood that the manifold 10 and the exhaust pipe 20 are connected through the connecting pipe 30. If the distance between two adjacent connecting pipes 30 is too large, the circulation of gas between the manifold 10 and the exhaust pipe 20 will be affected. If the distance between two adjacent connecting pipes 30 is too small, too many connecting pipes 30 need to be set between the manifold 10 and the exhaust pipe 20, which will not only increase the processing cost but also be inconvenient for actual processing.
[0051] Alternatively, as Figure 2 As shown, the first end 20a is provided with a one-way valve 40, and the one-way valve 40 is unidirectional from the second end 20b to the first end 20a.
[0052] In an embodiment of the present application, a one-way valve 40 is provided at the first end 20a of the exhaust pipe 20, that is, the end of the exhaust pipe 20 used to connect to the external exhaust system, to limit the one-way flow of gas from the exhaust pipe 20 to the external exhaust system, thereby preventing the gas of the exhaust system from flowing back into the negative pressure exhaust device and affecting the performance of the negative pressure component 50.
[0053] In some embodiments, as Figure 1 and Figure 2 As shown, the axis of the manifold 10 is parallel to the axis of the exhaust pipe 20. This facilitates the overall layout of the negative pressure exhaust device, improves the compactness of the structural layout, reduces the space occupied by the negative pressure exhaust device as a whole, and facilitates actual installation and use.
[0054] In some embodiments, as Figure 1and Figure 2 As shown, the axis of the connecting pipe 30 is perpendicular to the axis of the manifold 10 or the exhaust pipe 20. This can reduce the resistance of the gas passing through the connecting pipe 30, thereby facilitating smooth flow of gas between the manifold 10 and the exhaust pipe 20 through the connecting pipe 30, thereby improving the exhaust effect of the negative pressure exhaust device.
[0055] In some embodiments, as Figure 3 As shown, the end of the communication pipe 30 close to the manifold 10 can be welded and fixed to the manifold 10. The end of the communication pipe 30 close to the exhaust pipe 20 can be provided with a pipe joint, and the communication pipe 30 is connected to the exhaust pipe 20 through the pipe joint.
[0056] Furthermore, the exhaust pipe 20 may include a plurality of sub-pipes, and two adjacent sub-pipes are connected via pipe joints to form the exhaust pipe 20. This facilitates flexible assembly during actual use.
[0057] Optionally, an embodiment of the present application further provides a battery formation negative pressure system, comprising: a negative pressure component 50, an exhaust system, and the negative pressure exhaust device in the above embodiment, the negative pressure component 50 is connected to the connector 11, and the exhaust system is connected to the first end 20a.
[0058] In the embodiment of the present application, the negative pressure components 50 can be connected to the plurality of connectors 11 provided on the manifold 10, so that the manifold 10 can be used to collect the gases separated by the plurality of negative pressure components 50, and then guide the gases to the exhaust pipe 20 through the connecting pipe 30, so that the gas in the exhaust pipe 20 can be extracted by the exhaust system. In addition, by setting the flow cross-sectional area of the connecting pipe 30 away from the exhaust system to be larger than the flow cross-sectional area of the connecting pipe 30 close to the exhaust system, when the exhaust system is used to extract gas from one end of the exhaust pipe 20, the suction force distribution at different positions of the manifold 10 can be ensured to be more uniform, thereby improving the uniformity of the exhaust effect of the plurality of negative pressure components 50.
[0059] In some embodiments, the negative pressure assembly 50 may include a formation negative pressure cup. During the battery formation process, the formation negative pressure cup is connected to the interior of the battery so that the excess gas in the battery can be discharged by the negative pressure cup and extracted through the negative pressure exhaust device and the exhaust system.
[0060] In other embodiments, the exhaust system may include a negative pressure mechanism such as a vacuum pump and a vacuum generator, which provides negative pressure to the negative pressure exhaust device to exhaust the negative pressure component 50.
[0061] Optionally, an embodiment of the present application further provides a battery formation device, comprising the negative pressure exhaust device in the above embodiment, or comprising the battery formation negative pressure system in the above embodiment.
[0062] In an embodiment of the present application, the battery formation equipment includes a negative pressure exhaust device. The negative pressure components 50 can be connected to the manifold 10 through a plurality of connectors 11 provided on the manifold 10. The manifold 10 can be used to collect the gases separated by the plurality of negative pressure components 50, and then guide the gases to the exhaust pipe 20 through the connecting pipe 30, so that the gas in the exhaust pipe 20 can be extracted by the exhaust system. In addition, by setting the flow cross-sectional area of the connecting pipe 30 away from the exhaust system to be larger than the flow cross-sectional area of the connecting pipe 30 close to the exhaust system, when the exhaust system is used to extract gas from one end of the exhaust pipe 20, the suction force distribution at different positions of the manifold 10 can be ensured to be more uniform, thereby improving the uniformity of the exhaust effect of the plurality of negative pressure components 50.
[0063] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
[0064] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.
Claims
1. A negative pressure exhaust device, characterized in that: include: A manifold (10), an exhaust pipe (20) and a plurality of connecting pipes (30); The manifold (10) is provided with a plurality of connectors (11), the connectors (11) being used to connect to a negative pressure assembly (50), the exhaust pipe (20) having a first end (20a) and a second end (20b) opposite to each other, the first end (20a) being used to connect to an external exhaust system; A plurality of the communication pipes (30) are sequentially arranged between the exhaust pipe (20) and the manifold (10) at intervals, and the exhaust pipe (20) is connected to the manifold (10) through the communication pipes (30); wherein the flow cross-sectional area of the communication pipe (30) close to the first end (20a) is smaller than the flow cross-sectional area of the communication pipe (30) close to the second end (20b).
2. The negative pressure exhaust device according to claim 1, characterized in that: The number of the communicating pipes (30) is at least three, the communicating pipe (30) closest to the outermost side of the first end (20a) is the first pipe, the communicating pipe (30) closest to the outermost side of the second end (20b) is the second pipe, and the communicating pipe (30) located between the first pipe and the second pipe is the third pipe, wherein the flow cross-sectional areas of the first pipe, the third pipe, and the second pipe increase in sequence.
3. The negative pressure exhaust device according to claim 1 or 2, characterized in that: In a direction from the first end (20a) to the second end (20b), the flow cross-sectional areas of the plurality of communicating pipes (30) increase gradually.
4. The negative pressure exhaust device according to claim 3, characterized in that: The ratio of the flow cross-sectional areas of two adjacent communicating pipes (30) is 1.1-2.
5. The negative pressure exhaust device according to claim 1, characterized in that: The plurality of communicating pipes (30) are arranged at equal intervals.
6. The negative pressure exhaust device according to claim 5, characterized in that: The distance between two adjacent communicating pipes (30) is 100 mm to 400 mm.
7. The negative pressure exhaust device according to claim 1, characterized in that: The first end (20a) is provided with a one-way valve (40), and the one-way valve (40) is unidirectionally conductive in a direction from the second end (20b) to the first end (20a).
8. The negative pressure exhaust device according to claim 1, characterized in that: The axis of the manifold (10) is parallel to the axis of the exhaust pipe (20); And / or, the axis of the communicating pipe (30) is perpendicular to the axis of the manifold (10) or the exhaust pipe (20).
9. A battery formation negative pressure system, characterized in that: include: A negative pressure component (50), an air extraction system, and a negative pressure exhaust device as described in any one of claims 1 to 8, wherein the negative pressure component (50) is connected to the connector (11), and the air extraction system is connected to the first end (20a).
10. A battery formation device, characterized in that: It comprises the negative pressure exhaust device according to any one of claims 1 to 8, or the battery formation negative pressure system according to claim 9.