A rolling assembly, a rolling system and a cooling system
By setting cooling channels on the bearings and using a cooling system to circulate the cooling medium, the problem of roll deflection caused by bearing temperature rise was solved, ensuring the quality of electrode rolling and battery performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO YIWEI CHUANG ENERGY LITHIUM BATTERY CO LTD
- Filing Date
- 2025-05-19
- Publication Date
- 2026-06-12
AI Technical Summary
During the electrode rolling process, the bearing temperature rises due to the heat generated by the rollers, causing the rollers to flex and deform, affecting the straightness of the rollers and the rolling quality of the electrodes, and thus affecting the performance of the battery.
Cooling channels are installed on the bearings, and cooling medium flows within the channels, surrounding the rolls. The temperature of the cooling medium is regulated and circulated by the cooling system to remove heat from the bearings and prevent heat buildup.
It effectively reduces bearing temperature, prevents roll flexural deformation, ensures electrode rolling quality and battery performance, and avoids differences in battery core thickness or roundness caused by uneven electrode thickness.
Smart Images
Figure CN224346641U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of battery technology, specifically to a rolling assembly, a rolling system, and a cooling system. Background Technology
[0002] In related technologies, rolling bearings are installed at both ends of the roll to support the roll and ensure its smooth rotation. During the electrode rolling process, the bearings need to bear the loads such as the weight of the roll itself, the rolling force of the electrode, and the vibration of the equipment during operation to ensure the precise operation of the roll and to achieve a uniform compaction effect for the electrode. However, during the electrode rolling process, the roll will heat up due to continuous rotation, and the heat will be continuously conducted to the bearing. The heat at the bearing cannot be dissipated, which will cause the bearing temperature to rise, and then cause the roll to flexurally deform, affecting the straightness of the roll. Utility Model Content
[0003] The embodiments of this utility model provide a roll forming assembly, a roll forming system, and a cooling system, which can improve the technical problem of high bearing temperature, which leads to flexural deformation of the roll and affects the straightness of the roll.
[0004] In a first aspect, embodiments of the present invention provide a roll forming assembly, comprising:
[0005] Rolls;
[0006] Multiple bearings are connected to both ends of the roll, and each bearing is provided with a cooling channel to contain a cooling medium, the cooling channel being arranged around the roll.
[0007] In one embodiment, the width of the cooling channel along the radial direction of the roll is between 2 cm and 4 cm.
[0008] In one embodiment, the bearing is further provided with a liquid inlet channel and a liquid outlet channel, both of which are connected to the cooling channel and are arranged opposite to each other.
[0009] Secondly, embodiments of the present invention provide a rolling system, which includes the rolling assembly, the rolling assembly including a plurality of rollers, the plurality of rollers including an upper roller and a lower roller, the upper roller and the lower roller being arranged at intervals, and a rolling space being formed between the upper roller and the lower roller for rolling electrode sheets.
[0010] Thirdly, embodiments of this utility model provide a cooling system comprising a cooling medium tank, a power component, a heat exchange component, and the roller pressing system connected in sequence. The cooling medium tank is used to provide a cooling medium, the power component is used to transport the cooling medium to the heat exchange component, and the heat exchange component is used to adjust the cooling medium to a set temperature.
[0011] In one embodiment, the heat exchange assembly includes a cooling assembly and a heating assembly, both of which are connected to the front side of the roller pressing system along the flow direction of the cooling medium.
[0012] In one embodiment, the cooling assembly includes a heat exchanger for exchanging heat with the cooling medium.
[0013] In one embodiment, the heating assembly includes a heating element for heating the cooling medium.
[0014] In one embodiment, the cooling system further includes a first temperature sensor for detecting the temperature of the cooling medium flowing into the rolling system, the first temperature sensor being located in front of the rolling system along the flow direction of the cooling medium.
[0015] In one embodiment, the cooling system further includes a second temperature sensor for detecting the temperature of the cooling medium flowing out of the rolling system, the second temperature sensor being located behind the rolling system along the flow direction of the cooling medium.
[0016] In one embodiment, the cooling medium tank is provided with a liquid replenishment port.
[0017] In one embodiment, the power assembly includes a first pump body and a second pump body arranged in parallel, and both the first pump body and the second pump body are provided with a switch.
[0018] The beneficial effects of the roller pressing assembly of this utility model are as follows:
[0019] During the rolling process, the bearing is equipped with a cooling channel containing a cooling medium. The cooling channel is arranged around the roll. Therefore, when the roll rotates continuously and generates heat, the heat is transferred to the bearing. The cooling medium can reduce the heat in the bearing, thereby preventing heat from accumulating on the bearing and preventing the roll from undergoing flexible deformation, thus avoiding affecting the straightness of the roll.
[0020] The beneficial effects of the roller pressing system of this utility model are as follows:
[0021] During the electrode rolling process, the bearings are equipped with cooling channels containing cooling media. These channels are arranged around the rollers. As the rollers rotate and generate heat, the heat is transferred to the bearings. The cooling media reduces the heat in the bearings, preventing heat buildup and thus reducing roller flexural deformation. This avoids affecting the straightness of the rollers, ensuring the quality of electrode rolling, and preventing differences in battery core thickness or roundness due to uneven electrode thickness, thereby guaranteeing battery performance.
[0022] The beneficial effects of the cooling system of this utility model are as follows:
[0023] During the electrode rolling process, the bearings are equipped with cooling channels containing cooling media. These channels are arranged around the rollers. As the rollers rotate and generate heat, the heat is transferred to the bearings. The cooling media reduces the heat in the bearings, thus preventing heat buildup and reducing the rollers' flexural deformation. This avoids affecting the straightness of the rollers, ensuring the quality of the electrode rolling, and preventing differences in battery core thickness or roundness due to uneven electrode thickness, thereby ensuring battery performance.
[0024] Furthermore, in the cooling system, the cooling medium flows out from the cooling medium tank and is transferred to the heat exchange component via the power component. After the cooling medium is adjusted to the set temperature, it is sent into the cooling channel of the bearing to cool the bearing. After the cooling medium cools the bearing, it returns to the cooling medium tank and is again transported to the heat exchange component via the power component. After the cooling medium is adjusted to the set temperature, it is sent back into the cooling channel of the bearing. The cooling medium continuously circulates the above process, continuously cooling the bearing, removing the heat accumulated on the bearing, reducing the flexibility of the rolls, maintaining the horizontal consistency of the rolls, and preventing uneven thickness of the electrode rolls. Attached Figure Description
[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0026] Figure 1 This is a schematic diagram of the structure of the roller pressing assembly provided in an embodiment of this utility model;
[0027] Figure 2 It is at Figure 1 A schematic diagram of the bearing structure in the roll forming assembly;
[0028] Figure 3 It is at Figure 1 A cross-sectional view of the bearing in the roll forming assembly;
[0029] Figure 4 This is a schematic diagram of the structure of the roller pressing system provided in an embodiment of this utility model;
[0030] Figure 5 This is a schematic diagram of the cooling system provided in an embodiment of the present invention.
[0031] Figure Labels
[0032] 1. Roll forming assembly;
[0033] 100. Roll; 101. Upper roll; 102. Lower roll; 103. Rolling space;
[0034] 200. Bearing; 201. Liquid inlet channel; 202. Liquid outlet channel;
[0035] 300. Cooling passage;
[0036] 2. Roller pressing system;
[0037] 3. Cooling system;
[0038] 400. Cooling medium tank;
[0039] 500. Power assembly; 501. First pump body; 502. Second pump body; 503. Switch;
[0040] 600. Heat exchange assembly; 601. Cooling assembly; 6011. Heat exchanger; 602. Heating assembly; 6021. Heating element;
[0041] 700. First temperature sensor;
[0042] 800. Second temperature sensor. Detailed Implementation
[0043] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present utility model and are not intended to limit the present utility model. In the present utility model, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.
[0044] Reference Figures 1 to 3 As shown, an embodiment of the present invention provides a roll forming assembly 1, which includes a roll 100 and a plurality of bearings 200. The plurality of bearings 200 are connected to both ends of the roll 100. The bearings 200 are provided with cooling channels 300 to accommodate cooling medium. The cooling channels 300 are arranged around the roll 100.
[0045] During the electrode rolling process, the bearing 200 is equipped with a cooling channel 300, in which a cooling medium flows. The cooling channel 300 is arranged around the roller 100. Therefore, when the roller 100 rotates continuously and generates heat, the heat is transferred to the bearing 200. The cooling medium can reduce the heat in the bearing 200, thereby preventing heat from accumulating on the bearing 200. This reduces the flexural deformation of the roller 100, avoids affecting the straightness of the roller 100, ensures the quality of electrode rolling, and prevents differences in battery core thickness or roundness due to uneven electrode thickness, thus ensuring battery performance.
[0046] In some embodiments, the width of the cooling channel 300 along the radial direction of the roll 100 is between 2 cm and 4 cm. A width of 2 cm to 4 cm provides sufficient space to accommodate the cooling medium, allowing it to flow freely within the cooling channel 300 and quickly absorb the heat transferred from the bearing 200 and the roll 100. The above parameter settings prevent the cooling medium from being restricted due to an excessively narrow width of the cooling channel 300, and also prevent insufficient rigidity of the bearing 200 due to an excessively large width, thus ensuring the connection between the bearing 200 and the roll 100. Therefore, setting the width of the cooling channel 300 between 2 cm and 4 cm effectively reduces the temperature of the bearing 200 and the roll 100, minimizes the impact of heat on the deformation of the roll 100, ensures the rolling quality of the electrode sheets, and improves battery performance.
[0047] In some embodiments, refer to Figure 2 and Figure 3 As shown, the bearing 200 is also provided with an inlet channel 201 and an outlet channel 202, both of which are connected to the cooling channel 300 and are arranged opposite to each other. In this embodiment, the cooling medium enters the cooling channel 300 through the inlet channel 201, absorbs the heat generated by the bearing 200 during operation, and then exits through the outlet channel 202. Therefore, it can continuously remove heat and keep the temperature of the bearing 200 within a reasonable range. In addition, the opposite arrangement of the inlet channel 201 and the outlet channel 202 can form good convection, making the flow path of the cooling medium in the cooling channel 300 longer and the flow process smoother, further improving the heat exchange efficiency between the bearing 200 and the cooling medium.
[0048] Secondly, referring to Figure 4As shown, an embodiment of the present invention provides a roll forming system 2, including the roll forming assembly 1 described above. The roll forming assembly 1 includes a plurality of rolls 100, and the plurality of rolls 100 include an upper roll 101 and a lower roll 102. The upper roll 101 and the lower roll 102 are arranged at intervals, and a roll forming space 103 is formed between the upper roll 101 and the lower roll 102 for roll forming electrode sheets.
[0049] The roller pressing system 2 possesses all the beneficial effects of the roller pressing assembly 1 described above:
[0050] During the electrode rolling process, the bearing 200 is equipped with a cooling channel 300, in which a cooling medium flows. The cooling channel 300 is arranged around the roller 100. Therefore, when the roller 100 rotates continuously and generates heat, the heat is transferred to the bearing 200. The cooling medium can reduce the heat in the bearing 200, thereby preventing heat from accumulating on the bearing 200. This reduces the flexural deformation of the roller 100, avoids affecting the straightness of the roller 100, ensures the quality of electrode rolling, and prevents differences in battery core thickness or roundness due to uneven electrode thickness, thus ensuring battery performance.
[0051] It should also be noted that, in this embodiment, both sides of the roll 100 are provided with connecting parts for connection with the bearing 200. During the rolling process, the heat of the roll 100 can be transferred to the connecting parts, and then to the bearing 200, and the cooling purpose is achieved through the cooling channel 300 on the bearing 200.
[0052] Thirdly, referring to Figure 5 As shown, this utility model embodiment provides a cooling system 3, which includes a cooling medium tank 400, a power component 500, a heat exchange component 600 and a roller pressing system 2 as described above, connected in sequence. The cooling medium tank 400 is used to provide cooling medium, the power component 500 is used to transport the cooling medium to the heat exchange component 600, and the heat exchange component 600 is used to adjust the cooling medium to a set temperature.
[0053] The cooling system 3 possesses all the beneficial effects of the aforementioned roller pressing assembly 1 and roller pressing system 2:
[0054] During the electrode rolling process, the bearing 200 is equipped with a cooling channel 300, in which a cooling medium flows. The cooling channel 300 is arranged around the roller 100. Therefore, when the roller 100 rotates continuously and generates heat, the heat is transferred to the bearing 200. The cooling medium can reduce the heat in the bearing 200, thereby preventing heat from accumulating on the bearing 200. This reduces the flexural deformation of the roller, avoids affecting the straightness of the roller 100, ensures the quality of electrode rolling, and prevents differences in battery core thickness or roundness due to uneven electrode thickness, thus ensuring battery performance.
[0055] Furthermore, in the cooling system 3, the cooling medium flows out from the cooling medium tank 400 and is transferred to the heat exchange component 600 via the power component 500. After the cooling medium is adjusted to the set temperature, it is sent into the cooling channel 300 of the bearing 200 to cool the bearing 200. After the cooling medium cools the bearing 200, it returns to the cooling medium tank 400 and is again transported to the heat exchange component 600 via the power component 500. After the cooling medium is adjusted to the set temperature, it is sent back into the cooling channel 300 of the bearing 200. The cooling medium continuously circulates the above process, continuously cooling the bearing 200, removing the heat accumulated on the bearing 200, reducing the flexible deformation of the roll 100, maintaining the horizontal consistency of the roll 100, and preventing uneven thickness of the electrode sheet.
[0056] In some embodiments, the heat exchange assembly 600 includes a cooling assembly 601 and a heating assembly 602, both connected to the front side of the roller pressing system 2 along the flow direction of the cooling medium. In this embodiment, when the cooling medium flows to the heat exchange assembly 600 through the power assembly 500, if the temperature of the cooling medium is too high, the cooling assembly 601 cools the cooling medium to the required temperature; if the temperature of the cooling medium is too low, the heating assembly 602 heats the cooling medium to the required temperature.
[0057] Understandably, in specific settings, along the flow direction of the cooling medium, the cooling component 601 can be placed in front of the heating component 602. The cooling component 601 first cools the cooling medium that has finished the previous cycle, reducing it to the required temperature. To prevent the temperature of the cooling medium from falling below the standard temperature, the heating component 602 can also heat the cooling medium to the standard temperature. Therefore, the temperature of the cooling medium flowing into the roll forming system 2 can be guaranteed to be at the standard temperature, reducing the temperature of the bearing 200 and controlling the temperature of the bearing 200 within a reasonable range, thus preventing the bearing 200 from being too hot or too cold and affecting the roll 100.
[0058] In some embodiments, the cooling assembly 601 includes a heat exchanger 6011 for heat exchange with the cooling medium. Through the heat exchanger 6011, the heat absorbed by the cooling medium can be quickly transferred away via a highly efficient heat exchange process, thereby effectively absorbing the heat generated by the bearing 200 and the roll 100 and reducing the flexural deformation of the roll 100. Furthermore, the heat exchanger 6011 can adjust its exchange efficiency according to different operating conditions, such as different rolling speeds, electrode materials, or ambient temperatures, adapting to various operating conditions. This significantly improves the cooling efficiency and stability of the rolling system 2, reduces the impact of heat on the product quality of the rolling system 2 and the electrodes, and also offers advantages such as energy saving and environmental protection.
[0059] In some embodiments, the heating assembly 602 includes a heating element 6021 for heating the cooling medium. The heating element 6021 can supplement the cooling system 3. To prevent the temperature of the cooling medium from falling below the standard temperature, the heating element 6021 can also heat the cooling medium to the standard temperature. Therefore, the temperature of the cooling medium can be adjusted to a suitable range, ensuring that the temperature of the cooling medium flowing into the rolling system 2 is at the standard temperature, reducing the temperature of the bearing 200, and controlling the temperature of the bearing 200 within a reasonable range, thus preventing the bearing 200 from being too hot or too cold and affecting the roll 100.
[0060] In addition, the heating element 6021 can dynamically adjust the temperature of the cooling medium according to the actual operating requirements of the roller pressing system 2, so that the cooling system 3 can better adapt to different working conditions, with high adaptability and flexibility.
[0061] In some embodiments, the cooling system 3 further includes a first temperature sensor 700 for detecting the temperature of the cooling medium flowing into the rolling system 2, and the first temperature sensor 700 is located on the front side of the rolling system 2 along the flow direction of the cooling medium.
[0062] A first temperature sensor 700 is installed in the cooling system 3 to detect the temperature of the cooling medium flowing into the rolling system 2. The sensor is installed on the front side of the cooling medium flow direction. This setting enables the monitoring of the initial temperature of the cooling medium flowing into the rolling system 2. By ensuring that the cooling medium enters the system within a suitable temperature range, the operating efficiency and product quality of the cooling system 3 can be significantly improved, ensuring the cooling effect on the bearing 200. This avoids the accumulation of temperature on the roll 100, reduces the temperature of the roll 100, reduces the possibility of the roll 100 undergoing flexural deformation, and ensures the product quality of the electrode sheet.
[0063] In some embodiments, the cooling system 3 further includes a second temperature sensor 800 for detecting the temperature of the cooling medium flowing out of the rolling system 2. The second temperature sensor 800 is located on the rear side of the rolling system 2 along the flow direction of the cooling medium.
[0064] A second temperature sensor 800 is installed in the cooling system 3 to detect the temperature of the cooling medium flowing out of the rolling system 2. This sensor is installed on the rear side of the cooling medium flow direction. This configuration allows for monitoring the final temperature of the cooling medium flowing out of the rolling system 2, accurately evaluating the cooling effect, and determining whether adjustments to the operating conditions and parameters of the cooling component 601 and heating component 602 are necessary. This optimizes the cooling system 3, improves its reliability and flexibility, and ensures that the cooling system 3 is always in optimal working condition, guaranteeing the cooling effect on the bearing 200. This prevents temperature buildup on the roll 100, reduces the temperature of the roll 100, decreases the possibility of flexural deformation of the roll 100, and ensures the product quality of the electrode sheets.
[0065] In some embodiments, the coolant tank 400 is provided with a replenishment port. During the operation of the cooling system 3, the coolant may decrease due to evaporation or other reasons. The presence of the replenishment port allows the operator to replenish the coolant in a timely manner, ensuring that the cooling system 3 always has enough coolant to maintain normal cooling effect. In addition, timely replenishment of new coolant through the replenishment port can dilute or replace the coolant that has become dirty or degraded, thereby maintaining the cleanliness and good thermal conductivity of the coolant.
[0066] Therefore, in the cooling system 3, the setting of the liquid replenishment port can ensure a sufficient supply of cooling medium, optimize the operating efficiency of the cooling system 3, thereby ensuring the cooling effect on the bearing 200, avoiding the temperature accumulation of the roll 100, reducing the temperature of the roll 100, reducing the possibility of the roll 100 undergoing flexural deformation, and ensuring the product quality of the electrode sheet.
[0067] In some embodiments, the power assembly 500 includes a first pump body 501 and a second pump body 502 arranged in parallel, and both the first pump body 501 and the second pump body 502 are equipped with switches 503. It is understood that in this embodiment, the first pump body 501 is a commonly used pump body, set to a normally open state during use, while the second pump body 502 is a standby pump body, set to a normally closed state during use. When the first pump body 501 needs maintenance or replacement, the supply of cooling medium can be ensured by opening the second pump body 502, ensuring that the cooling medium can circulate smoothly, thereby ensuring the cooling effect on the bearing 200, preventing temperature buildup on the roll 100, reducing the temperature of the roll 100, reducing the possibility of flexible deformation of the roll 100, and ensuring the product quality of the electrode sheet.
[0068] The embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.
Claims
1. A roller pressing assembly, characterized in that, include: Rolls; Multiple bearings are connected to both ends of the roll, and each bearing is provided with a cooling channel to contain a cooling medium, the cooling channel being arranged around the roll.
2. The rolling assembly according to claim 1, characterized in that, Along the radial direction of the roll, the width of the cooling channel is between 2 cm and 4 cm.
3. The rolling assembly according to claim 2, characterized in that, The bearing is also provided with an inlet channel and an outlet channel, both of which are connected to the cooling channel and are arranged opposite to each other.
4. A roller pressing system, characterized in that, The rolling assembly includes the rolling assembly as described in any one of claims 1-3, the rolling assembly comprising a plurality of the rolls, the plurality of the rolls including an upper roll and a lower roll, the upper roll and the lower roll being spaced apart, and a rolling space being formed between the upper roll and the lower roll for rolling electrode sheets.
5. A cooling system, characterized in that, It includes a cooling medium tank, a power unit, a heat exchange unit, and the roller pressing system as described in claim 4, which are connected in sequence. The cooling medium tank is used to provide cooling medium, the power unit is used to transport the cooling medium to the heat exchange unit, and the heat exchange unit is used to adjust the cooling medium to a set temperature.
6. The cooling system according to claim 5, characterized in that, The heat exchange assembly includes a cooling assembly and a heating assembly, and both the cooling assembly and the heating assembly are connected to the front side of the roller pressing system along the flow direction of the cooling medium.
7. The cooling system according to claim 6, characterized in that, The cooling assembly includes a heat exchanger for exchanging heat with the cooling medium.
8. The cooling system according to claim 6, characterized in that, The heating assembly includes a heating element for heating the cooling medium.
9. The cooling system according to claim 5, characterized in that, It also includes a first temperature sensor for detecting the temperature of the cooling medium flowing into the rolling system, the first temperature sensor being located at the front of the rolling system along the flow direction of the cooling medium.
10. The cooling system according to claim 5, characterized in that, It also includes a second temperature sensor for detecting the temperature of the cooling medium flowing out of the rolling system, the second temperature sensor being located on the rear side of the rolling system along the flow direction of the cooling medium.
11. The cooling system according to claim 5, characterized in that, The cooling medium tank is equipped with a liquid replenishment port.
12. The cooling system according to claim 5, characterized in that, The power assembly includes a first pump body and a second pump body arranged in parallel, and both the first pump body and the second pump body are equipped with a switch.