Pole piece preheating oven

Abstract

Provided in the present application are a pole piece preheating oven, comprising a box body, a supporting assembly, and a plurality of first infrared heating pipes; a preheating chamber is arranged in the box body; and the supporting assembly and the first infrared heating pipes are assembled in the preheating chamber. The first infrared heating pipes are arranged in the preheating chamber to act as a heat source to preheat a pole piece supported by the supporting assembly, utilising the characteristics of high heat transfer efficiency and high power density, and thereby achieving a rapid response to temperature requirements, meeting actual production needs and increasing production efficiency.

Description

A pole piece preheating oven

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on December 29, 2023, with application number 202323664942.3. The entire contents of the above application are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of battery manufacturing equipment, and in particular to a pole piece preheating oven. Background Art

[0003] In the related art, when thermally compounding electrodes, the positive electrode and the negative electrode need to be preheated, and then the positive electrode, the negative electrode and the separator are compounded. Technical issues

[0004] The relevant preheating method generally uses upper and lower double-layer heat sinks to preheat the electrode, but the heat sink cannot quickly respond to the temperature requirements of the preheating process, resulting in low preheating efficiency and inability to perform segmented preheating, which limits the preheating process of the electrode and affects the thermal composite effect and production efficiency. Technical Solutions

[0005] The present application provides a pole piece preheating oven, comprising: a box body, a preheating chamber is provided in the box body; a support assembly, the support assembly is assembled in the preheating chamber; and a plurality of first infrared heating tubes, the first infrared heating tubes are assembled in the preheating chamber. Beneficial effects

[0006] The beneficial effect of a pole piece preheating oven provided in the present application is: by arranging a first infrared heating tube as a heat source in the preheating chamber, the pole piece supported by the support assembly is preheated, thereby utilizing the high heat transfer efficiency and high power density of the first infrared heating tube to achieve a rapid response to temperature requirements, meet actual production needs, and improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] FIG1 is a schematic diagram of the structure of the electrode preheating oven provided in this application;

[0008] FIG2 is another structural schematic diagram of the electrode preheating oven provided in this application.

[0009] The meanings of the reference numerals are as follows:

[0010] 1. Box body; 11. Preheating chamber; 2. Support assembly; 21. Support roller; 3. First infrared heating tube; 4. First mounting bracket; 5. Second infrared heating tube; 6. Second mounting bracket. Modes for Carrying Out the Invention

[0011] Referring to Figures 1 and 2, the present application discloses a pole piece preheating oven, which includes a housing 1, a support assembly 2, and a plurality of first infrared heating tubes 3. In some embodiments, a preheating chamber 11 is provided within the housing 1; the support assembly 2 is assembled within the preheating chamber 11; and the first infrared heating tubes 3 are assembled within the preheating chamber 11. By arranging the first infrared heating tubes 3 as a heat source within the preheating chamber 11, the pole piece supported by the support assembly 2 is preheated. The high heat transfer efficiency and high power density of the first infrared heating tubes 3 are utilized to achieve a rapid response to temperature requirements, meet actual production needs, and improve production efficiency.

[0012] The box body 1 can be made of a material with good thermal insulation performance, or a thermal insulation layer made of a material with good thermal insulation performance is provided in the box wall of the box body 1, thereby isolating the preheating chamber 11 from the external environment, avoiding heat loss in the preheating chamber 11 and causing energy waste.

[0013] A feed port and a discharge port are respectively provided on both sides of the box body 1 in the length direction, that is, the electrode can enter the preheating chamber 11 from one side of the box body 1 in the length direction and be supported on the support assembly 2. At the same time, it is preheated by the first infrared heating tube 3 assembled in the preheating chamber 11, and then the box body 1 leaves the preheating chamber 11 on the other side in the length direction and enters the next process.

[0014] Referring to Figures 1 and 2, in some embodiments, the first infrared heating tubes 3 are distributed at intervals within the preheating chamber 11. The first infrared heating tubes 3 are distributed at intervals between the feed port and the discharge port of the preheating chamber 11 so that the temperature within the preheating chamber 11 is uniform, which can meet the process requirements of uniform temperature preheating of the electrode. In addition, the first infrared heating tubes 3 distributed at intervals can reduce the mutual influence between the first infrared heating tubes 3. By adjusting the temperature of the first infrared heating tubes 3 at different positions, the temperature requirements of special processes such as segmented preheating or temperature-incremental preheating of the electrode can be met.

[0015] 1 and 2 , in some embodiments, a first mounting bracket 4 is further included, which is assembled in the preheating chamber 11, and the first infrared heating tube 3 is assembled on the first mounting bracket 4. The first mounting bracket 4 can be fixedly assembled in the preheating chamber 11 by bolts, screws, snaps, welding, or other connection methods, thereby reliably fixing the first infrared heating tube 3; the first mounting bracket 4 is arranged in a straight manner and is arranged parallel to the support assembly 2. By assembling the first infrared heating tube 3 on the first mounting bracket 4, the multiple first infrared heating tubes 3 are limited to be in the same plane, driving each first infrared heating tube 3 to maintain the same distance from the pole piece supported on the support assembly 2, thereby avoiding uneven heat source positions and causing adverse effects on the preheating effect.

[0016] Referring to Figures 1 and 2, in some embodiments, at least two adjacent first infrared heating tubes 3 form a first heating array, and the first heating arrays are evenly spaced within the preheating chamber 11. By forming a first heating array with at least two first infrared heating tubes 3, multiple first heating arrays are formed within the preheating chamber 11, and the first heating arrays are evenly spaced within the preheating chamber 11, thereby preheating the electrode by forming a first heating array composed of multiple first infrared heating tubes 3, improving the preheating efficiency and achieving a rapid response to temperature requirements; every four first infrared heating tubes 3 form a first heating array, and the first heating arrays are evenly spaced between the feed port and the discharge port of the preheating chamber 11, and in each first heating array, the first infrared heating tubes 3 are evenly spaced, wherein the spacing between adjacent first infrared heating tubes 3 is independent of the spacing between adjacent first heating arrays, thereby improving the preheating efficiency of the preheating chamber 11 for the electrode, and by adjusting the temperature of the first heating arrays at different positions, the temperature requirements of special processes such as segmented preheating or temperature-incremental preheating of the electrode can be met.

[0017] Referring to Figures 1 and 2, in some embodiments, a plurality of second infrared heating tubes 5 are further included, the first infrared heating tube 3 and the second infrared heating tube 5 are arranged in parallel, and the support assembly 2 is arranged between the first infrared heating tube 3 and the second infrared heating tube 5. That is, the first infrared heating tube 3 and the second infrared heating tube 5 respectively correspond to the two side surfaces of the electrode supported on the support assembly 2, so the first infrared heating tube 3 and the second infrared heating tube 5 can be used to heat the two side surfaces of the electrode supported on the support assembly 2 respectively, and the two side surfaces of the electrode on the support assembly 2 can be fully preheated to improve the preheating efficiency. The first infrared heating tube 3 and the second infrared heating tube 5 are arranged one by one opposite to each other, so that the first infrared heating tube 3 and the second infrared heating tube 5 preheat the two side surfaces of the same area of ​​the electrode at the same time, thereby improving the preheating efficiency and avoiding heat loss due to different preheating areas, resulting in energy waste.

[0018] Referring to Figures 1 and 2, in some embodiments, the second infrared heating tubes 5 are distributed at intervals in the preheating chamber 11. The second infrared heating tubes 5 are distributed at intervals between the feed port and the discharge port of the preheating chamber 11, and the first infrared heating tubes 3 and the second infrared heating tubes 5 are arranged one by one opposite to each other, so that the temperature of the two sides of the electrode on the support assembly 2 is in a uniform temperature state, which can meet the process requirements of uniform temperature preheating of the electrode, and the second infrared heating tubes 5 distributed at intervals can reduce the mutual influence between the second infrared heating tubes 5. By adjusting the temperature of the first infrared heating tubes 3 and the second infrared heating tubes 5 at different positions, or adjusting the temperature of any one of the first infrared heating tubes 3 and the second infrared heating tubes 5 at different positions, the temperature requirements of special processes such as segmented preheating or temperature-incremental preheating of the electrode can be met.

[0019] Referring to Figures 1 and 2, in some embodiments, a second mounting bracket 6 is further included. The second mounting bracket 6 is assembled in the preheating chamber 11, and the second infrared heating tube 5 is assembled on the second mounting bracket 6. The second mounting bracket 6 can be fixedly assembled in the preheating chamber 11 by bolts, screws, snaps, welding, etc., thereby reliably fixing the second infrared heating tube 5; the second mounting bracket 6 is arranged in a straight line and is arranged parallel to the support assembly 2. By assembling the second infrared heating tube 5 on the second mounting bracket 6, the plurality of second infrared heating tubes 5 are limited to the same plane, driving each second infrared heating tube 5 to maintain the same spacing with the electrode supported on the support assembly 2, thereby avoiding uneven heat source positions, which may adversely affect the preheating effect. The plane where the second infrared heating tube 5 is located and the plane where the first infrared heating tube 3 is located can be symmetrical with the support assembly 2 or the electrode supported on the support assembly 2 as the axis of symmetry. The two infrared heating tubes 3 and the second infrared heating tube 5 are arranged symmetrically with each other, so that the first infrared heating tube 3 and the second infrared heating tube 5 maintain the same spacing with the electrode supported on the support assembly 2, thereby avoiding uneven heating on both sides of the electrode, which may adversely affect the preheating effect.

[0020] 1 and 2 , in some embodiments, at least two adjacent second infrared heating tubes 5 form a second heating array, and the second heating array is evenly spaced within the preheating chamber 11 . A second heating array is formed by at least two second infrared heating tubes 5, and then multiple second heating arrays are formed in the preheating chamber 11, and the second heating arrays are distributed at equal intervals in the preheating chamber 11, so that the electrode is preheated by the second heating array composed of multiple second infrared heating tubes 5, the preheating efficiency is improved, and a rapid response to temperature requirements is achieved; every four second infrared heating tubes 5 form a second heating array, and the second heating arrays are distributed at equal intervals between the feed port and the discharge port of the preheating chamber 11, and in each second heating array, the second infrared heating tubes 5 are distributed at equal intervals, wherein the spacing between adjacent second infrared heating tubes 5 is independent of the spacing between adjacent second heating arrays, and the second heating array is arranged one-to-one with the first heating array, thereby improving the preheating efficiency of the preheating chamber 11 on both sides of the electrode. The temperature requirements of special processes such as segmented preheating or temperature-incremental preheating of the electrode can be met by adjusting the temperature of the second heating array and the first heating array at different positions, or adjusting the temperature of any one of the second heating array and the first heating array at different positions.

[0021] 1 and 2 , in some embodiments, the support assembly 2 includes a plurality of support rollers 21, which are mounted within the preheating chamber 11. The support rollers 21 are rotatable relative to the housing 1, thereby converting the sliding friction between the electrode and the support rollers 21 into rolling friction during electrode transport, thereby reducing friction between the support rollers 21 and the electrode, reducing equipment wear, and increasing equipment life.

[0022] Referring to Figures 1 and 2, in some embodiments, support rollers 21 are evenly spaced within the preheating chamber 11. The support rollers 21 are evenly spaced between the inlet and outlet of the preheating chamber 11 to provide uniform support to the electrode in the preheating chamber 11, thereby preventing deformation of the electrode due to uneven force during the preheating process.

[0023] 1 and 2, in some embodiments, the first infrared heating tube 3, the support roller 21 and the second infrared heating tube 5 are arranged in sequence along the height direction of the box body 1, and the electrode is placed flat on the support roller 21. The first infrared heating tube 3 is assembled in the preheating chamber 11 through the first mounting bracket 4, and the second infrared heating tube 5 is assembled in the preheating chamber 11 through the second mounting bracket 6. It is limited that the multiple first infrared heating tubes 3 are all in the same plane, and the multiple second infrared heating tubes 5 are all in the same plane, driving each first infrared heating tube 3 to maintain the same distance with the electrode supported on the support assembly 2, and each second infrared heating tube 5 to maintain the same distance with the electrode supported on the support assembly 2, so as to avoid uneven heat source positions, which may cause adverse effects on the preheating effect; the first infrared heating tube 3 and the second infrared heating tube 5 are arranged one by one relative to each other, so that the first infrared heating tube 3 and the second infrared heating tube 5 are relatively close to each other. The heat pipe 5 preheats the upper and lower sides of the electrode at the same time. Every four first infrared heating tubes 3 form a first heating array, and the first heating array is evenly spaced between the feed port and the discharge port of the preheating chamber 11, and in each first heating array, the first infrared heating tubes 3 are evenly spaced. Every four second infrared heating tubes 5 form a second heating array, and the second heating array is evenly spaced between the feed port and the discharge port of the preheating chamber 11, and in each second heating array, the second infrared heating tubes 5 are evenly spaced, thereby improving the preheating efficiency of the preheating chamber 11 on both sides of the electrode. The temperature requirements of special processes such as segmented preheating or temperature-incremental preheating of the electrode can be met by adjusting the temperature of the second heating array and the first heating array at different positions, or adjusting the temperature of any one of the second heating array and the first heating array at different positions.

Claims

1. A pole piece preheating oven, comprising: A box body (1), within which a preheating chamber (11) is provided; A support assembly (2), which is assembled within the preheating chamber (11); A plurality of first infrared heating tubes (3), which are assembled within the preheating chamber (11).

2. The pole piece preheating oven according to claim 1, wherein, The first infrared heating tubes (3) are spaced apart and distributed within the preheating chamber (11).

3. The pole piece preheating oven according to claim 1, further comprising a first mounting bracket (4), which is assembled within the preheating chamber (11), and the first infrared heating tubes (3) are assembled on the first mounting bracket (4).

4. The pole piece preheating oven according to any one of claims 1-3, wherein, At least two adjacent first infrared heating tubes (3) form a first heating array, and the first heating array is equally spaced and distributed within the preheating chamber (11).

5. The pole piece preheating oven according to claim 1, further comprising a plurality of second infrared heating tubes (5), the first infrared heating tubes (3) and the second infrared heating tubes (5) are arranged in parallel, and the support assembly (2) is arranged between the first infrared heating tubes (3) and the second infrared heating tubes (5).

6. The pole piece preheating oven according to claim 5, wherein, The second infrared heating tubes (5) are spaced apart and distributed within the preheating chamber (11).

7. The pole piece preheating oven according to claim 5, further comprising a second mounting bracket (6), which is assembled within the preheating chamber (11), and the second infrared heating tubes (5) are assembled on the second mounting bracket (6).

8. The pole piece preheating oven according to any one of claims 5-7, wherein, At least two adjacent second infrared heating tubes (5) form a second heating array, and the second heating array is equally spaced and distributed within the preheating chamber (11).

9. The pole piece preheating oven according to claim 1, wherein, The support assembly (2) includes a plurality of support rollers (21), and the support rollers (21) are assembled within the preheating chamber (11).

10. The pole piece preheating oven according to claim 9, wherein, The support rollers (21) are equally spaced and distributed within the preheating chamber (11).

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