Lithium battery diaphragm heat setting equipment
By combining a multi-segment trackless oven and a cold roller, the problem of uneven deformation and shrinkage of the separator in the heat setting equipment for lithium battery separators is solved, achieving uniform shrinkage and setting of the separator, and improving the stability and performance of the separator.
Patent Information
- Application Number
- CN202520113376.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-01-17
AI Technical Summary
In existing lithium battery separator heat setting equipment, the heating of the guide rollers causes the separator to deform and shrink unevenly, resulting in substandard performance.
The design employs a multi-segment trackless oven and cold rollers. The trackless oven heats and shrinks the lithium battery separator, while the cold rollers cool and shape the separator. Combined with temperature control and air blowing, the separator is uniformly shrunk and shaped.
It improves the uniformity of shrinkage and deformation of lithium battery separators, avoids separator wrinkles, and enhances the stability and performance of separators.
Smart Images
Figure CN223834891U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of lithium battery separator production technology, and in particular to a lithium battery separator heat setting device. Background Technology
[0002] As a key material in lithium batteries, the quality of the separator directly affects the battery's lifespan and safety. Currently, the industry lacks a complete process for controlling the deformation and heat shrinkage of lithium battery separators. Existing adjustment methods mainly rely on variations in product thickness and temperature. Current equipment uses multiple guide rollers for heat setting, primarily employing heat-conducting oil or water-based rollers to achieve shrinkage. However, during this process, the separator shrinks as it passes over the heated rollers, causing wrinkles and curling. Furthermore, the separator's physical properties deviate after cooling, leading to substandard performance. Utility Model Content
[0003] The technical problem this application aims to solve is that the heat-setting guide rollers are not effective in deforming and shrinking lithium battery separators.
[0004] To overcome the above-mentioned defects, this application provides a lithium battery separator heat setting device, which includes multiple trackless ovens and cold rollers, with each section of the cold rollers correspondingly disposed at the outlet of each section of the trackless oven; the trackless ovens are used to heat-shrink the lithium battery separator, and the cold rollers are used to cool and set the lithium battery separator.
[0005] Furthermore, the trackless oven is equipped with multiple upper air nozzles at the top and multiple lower air nozzles at the bottom; the upper air nozzles are used to blow air onto the upper surface of the lithium battery separator, and the lower air nozzles are used to blow air onto the lower surface of the lithium battery separator, so that the lithium battery separator is heated and shrinks evenly.
[0006] Furthermore, the trackless oven is also equipped with a temperature controller, which is used to control the temperature inside the trackless oven.
[0007] Furthermore, the trackless oven is specifically used for lateral and longitudinal shrinking of lithium battery separators.
[0008] Furthermore, the cold roller is a chilled water guide roller.
[0009] Furthermore, the lithium battery separator heat setting equipment also includes a thickness gauge; the thickness gauge is located at the exit of the last section of the cold roller and is used to measure the thickness of the lithium battery separator.
[0010] Furthermore, the lithium battery separator heat setting equipment also includes a defect detector; the defect detector is located at the outlet of the thickness gauge and is used to detect defects in the lithium battery separator.
[0011] Furthermore, the lithium battery separator heat setting equipment also includes a winding station; the winding station is located at the exit of the defect detector and is used to wind up the lithium battery separator.
[0012] The above-mentioned technical solution of this application has the following advantages:
[0013] The lithium battery separator heat-setting equipment provided in this application employs a multi-segment trackless oven and cold rollers. Each cold roller is positioned at the outlet of its respective trackless oven. The trackless oven heats and shrinks the lithium battery separator, while the cold rollers cool and shape it. This avoids the need for heat-setting guide rollers. The trackless oven facilitates the heat shrinkage of the lithium battery separator as it passes through, and the cold rollers effectively improve separator deformation. Using multiple trackless ovens and cold rollers for repeated shrinkage and shaping of the lithium battery separator effectively enhances the shrinkage and deformation performance, resulting in more stable and consistent separator consistency. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0015] Figure 1 This is a schematic diagram of the lithium battery separator heat setting equipment provided in this application.
[0016] Attached reference numerals: 1. Trackless drying oven; 11. Upper air nozzle; 12. Lower air nozzle; 2. Cold roller; 3. Thickness gauge; 4. Defect detector; 5. Rewinding station. Detailed Implementation
[0017] The specific embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but are not intended to limit the scope of this application.
[0018] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0019] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0020] References to "one embodiment" or "some embodiments" in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized.
[0021] The specific embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but are not intended to limit the scope of this application.
[0022] like Figure 1 As shown in the figure, this application provides a lithium battery separator heat setting device, which includes multiple trackless ovens 1 and cold rollers 2, with each section of the cold rollers 2 correspondingly disposed at the outlet of each section of the trackless oven 1; the trackless oven 1 is used to heat and shrink the lithium battery separator, and the cold rollers 2 are used to cool and set the lithium battery separator.
[0023] This application's embodiments employ an oven design to replace the existing heat-setting guide rollers. The oven is designed as a multi-segment trackless oven, allowing the diaphragm to shrink upon heating as it passes through. A cold roller is used at the oven outlet to shape the diaphragm, thereby improving diaphragm deformation. Using a multi-segment oven and performing multiple shaping processes effectively enhances diaphragm shrinkage and deformation.
[0024] like Figure 1 As shown, in some embodiments, the trackless oven 1 is provided with multiple upper air nozzles 11 at the top and multiple lower air nozzles 12 at the bottom; the upper air nozzles 11 are used to blow air onto the upper surface of the lithium battery separator, and the lower air nozzles 12 are used to blow air onto the lower surface of the lithium battery separator, so that the lithium battery separator is heated and shrinks evenly.
[0025] In some embodiments, the trackless oven is further provided with a temperature controller, which is used to control the temperature inside the trackless oven.
[0026] In some embodiments, the trackless oven is specifically used for lateral and longitudinal shrinking of lithium battery separators.
[0027] In some embodiments, the cold roller 2 is a chilled water guide roller.
[0028] like Figure 1 As shown, in some embodiments, the lithium battery separator heat setting equipment further includes a thickness gauge 3; the thickness gauge 3 is located at the outlet of the last section of the cold roller 2 and is used to measure the thickness of the lithium battery separator.
[0029] In some embodiments, the lithium battery separator heat setting equipment further includes a defect detector 4; the defect detector 4 is located at the outlet of the thickness gauge 3 and is used to detect defects in the lithium battery separator.
[0030] In some embodiments, the lithium battery separator heat setting equipment further includes a winding station 5; the winding station 5 is located at the outlet of the defect detector 4 and is used to wind up the lithium battery separator.
[0031] The temperature inside the trackless drying oven 1 is controlled by a temperature controller, and the airflow inside the oven 1 is controlled by upper and lower air nozzles 11 and 12. This allows the lithium battery separator molecules to be reshaped and oriented, achieving uniform lateral and longitudinal shrinkage of the lithium battery separator during operation in the equipment. The multi-segment trackless drying oven and the cold roller cooling and shaping design after the lithium battery separator passes through the oven result in more stable consistency of the lithium battery separator and better deformation and shrinkage effects.
[0032] The lithium battery separator heat-setting equipment provided in this application employs a multi-segment trackless oven and cold rollers. Each cold roller is positioned at the outlet of its respective trackless oven. The trackless oven heats and shrinks the lithium battery separator, while the cold rollers cool and shape it. This avoids the need for heat-setting guide rollers. The trackless oven facilitates the heat shrinkage of the lithium battery separator as it passes through, and the cold rollers effectively improve separator deformation. Using multiple trackless ovens and cold rollers for repeated shrinkage and shaping of the lithium battery separator effectively enhances the shrinkage and deformation performance, resulting in more stable and consistent separator consistency.
[0033] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is merely an example. In practical applications, the above functions can be assigned to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. Furthermore, the specific names of the functional units and modules are only for easy differentiation and are not intended to limit the scope of protection of this application.
[0034] It should be clarified that the various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. This application is not limited to the specific structures described above and shown in the figures. Furthermore, for the sake of brevity, detailed descriptions of known methods and techniques are omitted here.
[0035] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.
Claims
1. A heat-setting device for lithium battery separators, characterized in that, The lithium battery separator heat setting equipment includes multiple trackless ovens and cold rollers, with each section of the cold rollers corresponding to the outlet of the trackless oven. The trackless ovens are used to heat-shrink the lithium battery separator, and the cold rollers are used to cool and set the lithium battery separator.
2. The lithium battery separator heat setting equipment as described in claim 1, characterized in that, The trackless oven is equipped with multiple upper air nozzles at the top and multiple lower air nozzles at the bottom. The upper air nozzles are used to blow air onto the upper surface of the lithium battery separator, and the lower air nozzles are used to blow air onto the lower surface of the lithium battery separator, so that the lithium battery separator is heated and shrinks evenly.
3. The lithium battery separator heat setting equipment as described in claim 1, characterized in that, The trackless oven is also equipped with a temperature controller, which is used to control the temperature inside the trackless oven.
4. The lithium battery separator heat setting equipment as described in claim 1, characterized in that, The trackless oven is specifically used for lateral and longitudinal shrinking of lithium battery separators.
5. The lithium battery separator heat setting equipment as described in claim 1, characterized in that, The cold roller is a chilled water guide roller.
6. The lithium battery separator heat setting equipment as described in claim 1, characterized in that, The lithium battery separator heat setting equipment also includes a thickness gauge; the thickness gauge is located at the outlet of the last section of the cold roller and is used to measure the thickness of the lithium battery separator.
7. The lithium battery separator heat setting equipment as described in claim 6, characterized in that, The lithium battery separator heat setting equipment also includes a defect detector; the defect detector is located at the outlet of the thickness gauge and is used to detect defects in the lithium battery separator.
8. The lithium battery separator heat setting equipment as described in claim 7, characterized in that, The lithium battery separator heat setting equipment also includes a winding station; the winding station is located at the exit of the defect detector and is used to wind up the lithium battery separator.