Heating roller device
The nested heating roller device solves the problem of uneven heating roller temperature, achieves uniform surface temperature of the heating roller and improves thermal conductivity, thereby improving the rolling effect of lithium-ion battery electrodes.
Patent Information
- Application Number
- CN202520237614.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-14
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2035-02-14
AI Technical Summary
Existing heating rollers have uneven temperature issues in lithium-ion battery production, resulting in a high rate of defective electrode rolls and reduced production efficiency.
The heating roller device with a nested structure includes a heating roller, a heating circulation mechanism, a first circulation channel, a second circulation channel, and a connecting channel. The nested structure enables the circulation of heat transfer oil, ensuring the uniformity of the surface temperature of the heating roller.
This achieves uniform surface temperature of the heating roller, improves thermal conductivity, avoids inconsistent electrode thickness, and enhances production efficiency.
Smart Images
Figure CN223596461U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to battery manufacturing technical field, concretely is a kind of heating roller device. BACKGROUND
[0002] In the production process of lithium ion battery, rolling is a very important process, and its main task is to roll the pole piece produced in the previous coating process;The most commonly used method in the industry is mainly to use two heating rollers to roll the pole piece to be rolled, and the rolling is to improve the compaction of the battery pole piece, and the heating is to reduce the moisture in the battery pole piece and reduce the material rebound after the rolling of the battery pole piece.
[0003] The most commonly used heating method in the industry is to use heat-conducting oil heating, and a heat-conducting oil channel is opened in the heating roller, and the heat-conducting oil enters the inside of the heating roller through the channel, and the battery pole piece is heated by heat conduction;Since the heat-conducting oil enters from one end of the heating roller and outputs from the other end, the heat of the heat-conducting oil will be lost in the heat conduction process, and the temperature of the surface of the heating roller will inevitably be uneven, increasing the rolling failure rate of the pole piece, thereby reducing the production efficiency. UTILITY MODEL CONTENTS
[0004] The technical problem to be solved by the utility model is how to realize the uniformity of the surface temperature of the heating roller.
[0005] The utility model realizes the above technical problems by the following technical means:
[0006] A kind of heating roller device, including heating roller (1), heating circulation mechanism (2), first circulation channel (3), second circulation channel (4), connecting channel (5);The side of heating roller (1) is provided with heating circulation mechanism (2), and first circulation channel (3) is arranged in heating roller (1), and first circulation channel (3) is communicated with heating circulation mechanism (2), and the periphery of heating roller (1) is provided with multiple second circulation channels (4), and each second circulation channel (4) and first circulation channel (3) are respectively communicated with connecting channel (5), and first circulation channel (3), second circulation channel (4), connecting channel (5) are all nested structure, and the inner channel and outer channel of each second circulation channel (4) are respectively communicated.
[0007] Beneficial effects: through the setting of heating roller, heating circulation mechanism, first circulation channel, second circulation channel and connecting channel, the heat-conducting oil heated in the heating circulation mechanism can be conveyed into the second circulation channel through the connecting channel by the first circulation channel, to adjust the surface temperature of the heating roller, and the cooled heat-conducting oil can be heated again by flowing into the heating circulation mechanism through the first circulation channel;The setting of nested structure can make the heat-conducting oil in the inner and outer channels exchange heat, to ensure the consistency of the surface temperature of the heating roller.
[0008] Further, the middle part of the heating roller (1) is fixed with a first circulation channel (3).
[0009] Further, the heating circulation mechanism (2) comprises a heater (21) in which heat-conducting oil is placed, and a circulation machine (22) is fixed in the heater (21), and the output end of the circulation machine (22) is in communication with the inner channel of the first circulation channel (3), and the outer channel of the first circulation channel (3) is in communication with the heater (21).
[0010] Beneficial effect: through the setting of the heater and the circulation machine, the heater can heat the heat-conducting oil, the circulation machine can deliver the heated heat-conducting oil into the inner channel of the first circulation channel, and the outer channel of the first circulation channel can deliver the cooled heat-conducting oil into the heater for heating.
[0011] Further, the first circulation channel (3) comprises a first inner channel (31), and a first outer channel (32) is sleeved on the periphery of the first inner channel (31), and a gap is arranged between the first outer channel (32) and the first inner channel (31).
[0012] Beneficial effect: through the setting of the gap, the flow of the heat-conducting oil is facilitated.
[0013] Further, one side of the first inner channel (31) is in communication and fixed with the circulation machine (22) of the heating circulation mechanism (2), and the other side is sealed; one side of the first outer channel (32) is communicated into the heater (21) of the heating circulation mechanism (2), and the other side is sealed.
[0014] Further, the first inner channel (31) is respectively in communication and fixed with a plurality of connecting inner channels (51) of connecting channels (5), and the first outer channel (32) is respectively in communication and fixed with a plurality of connecting outer channels (52) of the connecting channels (5).
[0015] Beneficial effect: through the setting of the connecting channel, the heat-conducting oil can be circulated and flowed between the first circulation channel and the second circulation channel.
[0016] Further, the connecting channel (5) comprises a connecting inner channel (51), and a connecting outer channel (52) is sleeved on the periphery of the connecting inner channel (51), and a gap is arranged between the connecting outer channel (52) and the connecting inner channel (51).
[0017] Further, the free end of each connecting inner channel (51) is respectively in communication and fixed with the second inner channel (41) of the second circulation channel (4) at the corresponding position, and the free end of each connecting outer channel (52) is respectively in communication and fixed with the second outer channel (42) of the second circulation channel (4) at the corresponding position.
[0018] Beneficial effects: The heat conduction efficiency is higher due to the setting of multiple secondary circulation channels.
[0019] Furthermore, the upper connecting channels (5) and the lower connecting channels (5) are set diagonally.
[0020] Beneficial effect: By setting the diagonal of the connecting channel, the uniformity of the surface temperature of the heating roller is further ensured.
[0021] Furthermore, the second circulation channel (4) includes a second inner channel (41), and a second outer channel (42) is provided around the second inner channel (41). A gap is provided between the second outer channel (42) and the second inner channel (41). Both sides of the second circulation channel (4) are sealed, and a notch is provided on the side of the second inner channel (41) away from the connection with the connecting channel (5).
[0022] Beneficial effect: By setting the gap, the inner and outer channels of the second circulation channel can be connected. Attached Figure Description
[0023] Figure 1 This is a side sectional view of the heating roller device according to Embodiment 1 of this utility model;
[0024] Figure 2 This is a schematic diagram of the operation of the heating roller device in Embodiment 1 of this utility model. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0026] Example 1
[0027] like Figure 1 As shown, this embodiment provides a heating roller device, including a heating roller 1, a heating circulation mechanism 2, a first circulation channel 3, a second circulation channel 4, and a connecting channel 5.
[0028] like Figure 1 As shown, a heating circulation mechanism 2 is fixed on one side of the heating roller 1, a first circulation channel 3 is fixed in the middle of the heating roller 1, the output end of the heating circulation mechanism 2 is connected to the first circulation channel 3, and a plurality of second circulation channels 4 are fixed on the periphery of the heating roller 1. Each second circulation channel 4 is connected to the first circulation channel 3 by a connecting channel 5.
[0029] As Figure 1 shown, the heating circulation mechanism 2 comprises a heater 21 and a circulation machine 22, the heat-conducting oil is placed in the heater 21, the circulation machine 22 is fixed in the heater 21, and the circulation machine 22 can deliver the heated heat-conducting oil into the first circulation channel 3, and the cooled heat-conducting oil in the first circulation channel 3 can flow back into the heater 21 for heating.
[0030] As Figure 1 , Figure 2 shown, the first circulation channel 3 comprises a first inner channel 31 and a first outer channel 32, the first outer channel 32 is sleeved on the periphery of the first inner channel 31, and a gap is arranged between the first outer channel 32 and the first inner channel 31 for the flow of the heat-conducting oil; one side of the first inner channel 31 close to the heating circulation mechanism 2 is in communication with the output end of the circulation machine 22, and the other side of the first inner channel 31 is sealed; one side of the first outer channel 32 close to the heating circulation mechanism 2 is communicated into the heater 21, and the other side of the first outer channel 32 is sealed; the middle part of the first inner channel 31 is in communication with the connecting inner channels 51 of the plurality of connecting channels 5, respectively, and the middle part of the first outer channel 32 is in communication with the connecting outer channels 52 of the plurality of connecting channels 5, respectively.
[0031] As Figure 1 shown, the connecting channel 5 comprises a connecting inner channel 51 and a connecting outer channel 52, the connecting outer channel 52 is sleeved on the periphery of the connecting inner channel 51, and a gap is arranged between the connecting outer channel 52 and the connecting inner channel 51 for the flow of the heat-conducting oil; the free end of each connecting inner channel 51 is in communication with the second inner channel 41 of the corresponding position of the second circulation channel 4, respectively, and the free end of each connecting outer channel 52 is in communication with the second outer channel 42 of the corresponding position of the second circulation channel 4, respectively; each connecting channel 5 above is diagonally arranged with each connecting channel 5 below.
[0032] As Figure 1 , Figure 2 shown, the second circulation channel 4 comprises a second inner channel 41 and a second outer channel 42, the second outer channel 42 is sleeved on the periphery of the second inner channel 41, and a gap is arranged between the second outer channel 42 and the second inner channel 41 for the flow of the heat-conducting oil; both sides of the second circulation channel 4 are sealed, and a notch is formed on one side of the second inner channel 41 away from the connecting channel 5, so that the heat-conducting oil can flow from the second inner channel 41 into the second outer channel 42.
[0033] As Figure 1As shown, the nested structure of the first circulation channel 3, the second circulation channel 4 and the connecting channel 5 not only occupies a small space, but also can ensure the consistency of the surface temperature of the heating roller, thereby avoiding the problem of inconsistent transverse thickness of the pole piece caused by uneven temperature; in addition, the second circulation channel 4 is located around the heating roller 1, which has higher heat conduction efficiency than the traditional one located only at the shaft center.
[0034] In use, the heater 21 heats the heat-conducting oil therein, the circulating machine 22 delivers the heated heat-conducting oil into the first inner channel 31, the heat-conducting oil in the first inner channel 31 flows to the other end of the first inner channel 31 and each connecting inner channel 51 respectively, the heat-conducting oil in each connecting inner channel 51 flows to each second inner channel 41 respectively, the heat-conducting oil in each second inner channel 41 flows into each second outer channel 42 through the gap respectively, the heat-conducting oil in each second outer channel 42 flows into the first outer channel 32 through each connecting outer channel 52 respectively, the heat-conducting oil in the first outer channel 32 flows to both sides of the first outer channel 32 respectively, and finally all flows into the heater 21 for heating; the heat-conducting oil in the inner channel is always hotter than that in the outer channel, through the setting of the nested structure, the heat-conducting oil in the inner and outer channels can be heat-exchanged, thereby ensuring the consistency of the surface temperature of the heating roller; the heating roller 1 is provided with a plurality of second circulation channels 4 on the periphery, and has higher heat-conduction efficiency.
[0035] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to some technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims
1. A heating roller device, characterized in that, It includes a heating roller (1), a heating circulation mechanism (2), a first circulation channel (3), a second circulation channel (4), and a connecting channel (5); a heating circulation mechanism (2) is provided on one side of the heating roller (1), a first circulation channel (3) is provided inside the heating roller (1), the first circulation channel (3) is connected to the heating circulation mechanism (2), a plurality of second circulation channels (4) are provided on the periphery of the heating roller (1), and a connecting channel (5) is provided between each second circulation channel (4) and the first circulation channel (3). The first circulation channel (3), the second circulation channel (4), and the connecting channel (5) are all nested structures, and the inner and outer channels of each second circulation channel (4) are connected.
2. The heating roller device according to claim 1, characterized in that: The heating roller (1) has a first circulation channel (3) fixed in the middle.
3. The heating roller device according to claim 1, characterized in that: The heating circulation mechanism (2) includes a heater (21), which contains heat transfer oil. A circulation machine (22) is fixed inside the heater (21). The output end of the circulation machine (22) is connected to the inner channel of the first circulation channel (3), and the outer channel of the first circulation channel (3) is connected to the heater (21).
4. The heating roller device according to claim 1, characterized in that: The first circulation channel (3) includes a first inner channel (31), and a first outer channel (32) is provided around the first inner channel (31). A gap is provided between the first outer channel (32) and the first inner channel (31).
5. A heating roller device according to claim 4, characterized in that: One side of the first inner channel (31) is connected and fixed to the circulation machine (22) of the heating circulation mechanism (2), and the other side is sealed; one side of the first outer channel (32) is connected to the heater (21) of the heating circulation mechanism (2), and the other side is sealed.
6. The heating roller device according to claim 4, characterized in that: The first inner channel (31) is connected and fixed to the inner channel (51) of the multiple connecting channels (5), and the first outer channel (32) is connected and fixed to the outer channel (52) of the multiple connecting channels (5).
7. The heating roller device according to claim 1, characterized in that: The connecting channel (5) includes an inner connecting channel (51), and an outer connecting channel (52) is provided around the inner connecting channel (51). A gap is provided between the outer connecting channel (52) and the inner connecting channel (51).
8. A heating roller device according to claim 7, characterized in that: The free ends of each connecting inner channel (51) are respectively connected and fixed to the second inner channel (41) of the corresponding second circulation channel (4), and the free ends of each connecting outer channel (52) are respectively connected and fixed to the second outer channel (42) of the corresponding second circulation channel (4).
9. A heating roller device according to claim 1, characterized in that: The upper connection channels (5) and the lower connection channels (5) are set diagonally.
10. A heating roller device according to claim 1, characterized in that: The second circulation channel (4) includes a second inner channel (41), and a second outer channel (42) is provided around the second inner channel (41). A gap is provided between the second outer channel (42) and the second inner channel (41). Both sides of the second circulation channel (4) are sealed. A notch is provided on the side of the second inner channel (41) away from the connection with the connecting channel (5).