An accelerated baking device for electrodes

Abstract

This utility model discloses an accelerated electrode baking device, comprising: an oven, a vibrating table, the vibrating table being inclinedly disposed within the oven, and a turnover box disposed on the vibrating table. The turnover box is provided with a limiting groove that cooperates with the electrode, and the limiting groove can accommodate multiple stacked electrode sheets. The vibrating table can vibrate the turnover box, causing the electrode sheets inside the turnover box to vertically loosen. This accelerated electrode baking device bakes the electrode sheets in the oven, and the vibrating table vibrates the stacked electrode sheets simultaneously during baking, causing the electrode sheets to vertically loosen, exposing the internal area of ​​the stacked electrode sheets, accelerating moisture evaporation, improving baking efficiency, and making baking more uniform. At the same time, the inclined posture has the effect of guiding and restricting the movement of the electrode sheets, preventing disordered movement of the electrode sheets from damaging the electrode tabs.

Description

Technical Field

[0001] This utility model belongs to the technical field of electrode baking device, and more specifically, relates to an electrode accelerated baking device. Background Technology

[0002] There are three major threats to the research, development, and manufacturing of lithium-ion batteries: dust, metal particles, and moisture. Moisture, in particular, can significantly impact process components (such as electrodes and metal structural parts) and the battery cell itself, leading to issues like abnormal adhesion, poor processing performance, corrosion of structural parts, electrolyte decomposition, reduced cell cycle life, increased internal resistance, bulging, and leakage. Therefore, moisture is a critical indicator that requires strict control during lithium-ion battery production.

[0003] Moisture cannot be completely avoided in the production of lithium-ion batteries. Therefore, it is crucial to control the water content of main materials such as active materials, electrodes, separators, and electrolytes. The common method is to bake the raw material powder, the electrodes, and the cells. The baking process controls the moisture content of the components within a reasonable range.

[0004] Existing technologies typically involve long-term electrode baking, which is optimized by changing baking process parameters or by modifying the oven to improve the distribution of drying airflow inside the oven. However, none of these technologies can achieve uniform baking of the stacked electrodes more quickly and thoroughly. The main advantage of this solution is that it can disperse the stacked electrodes by vibration, achieving uniform and efficient electrode baking. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing an accelerated baking device for electrode sheets, thereby solving the problem that existing technologies cannot achieve uniform baking of the interior of stacked electrode sheets more quickly and thoroughly.

[0006] To achieve the above objectives, this utility model provides an electrode accelerated baking device, comprising: Oven; A vibration table, which is inclinedly arranged inside the oven; A turnover box is provided on the vibration table. The turnover box is provided with a limiting groove that cooperates with the electrode sheet. The limiting groove can accommodate multiple stacked electrode sheets. The vibration table can vibrate the turnover box to make the electrode sheets in the turnover box vertically loose.

[0007] Optionally, the oven is also provided with a ventilation structure.

[0008] Optionally, the limiting groove is provided with a tab position, which is located near the high end of the vibration table.

[0009] Optionally, a buffer wear-resistant layer is provided in the limiting groove.

[0010] Optionally, the tilt angle of the vibration platform is 5-30°.

[0011] Optionally, a fixed base is provided inside the oven, and a slope is provided on the fixed base, and the vibration table is disposed on the slope.

[0012] Optionally, the ventilation structure includes a vacuum pump and a gas source, the gas source being used to provide dry nitrogen.

[0013] Optionally, the vibration frequency of the vibration table is 10-100 times / min.

[0014] Optionally, the amplitude of the vibration table is controlled to be 5-50 mm.

[0015] Optionally, the vibration duration of the vibration table is controlled to be 1-100 min.

[0016] This utility model provides an electrode accelerated baking device, the beneficial effects of which are: This accelerated electrode baking device bakes the electrodes in an oven, while a vibrating table simultaneously vibrates the stacked electrodes, causing them to loosen vertically and expose the internal areas of the stacked electrodes. This accelerates moisture evaporation, improves baking efficiency, and ensures more uniform baking. The tilted posture also guides and restricts electrode movement, preventing disordered movement from damaging the electrode tabs.

[0017] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0018] The above and other objects, features and advantages of the present invention will become more apparent from the accompanying drawings, in which like reference numerals generally represent like parts.

[0019] Figure 1 A schematic diagram of an electrode accelerated baking apparatus according to an embodiment of the present invention is shown.

[0020] Figure 2 A top view of an electrode accelerated baking apparatus according to an embodiment of the present invention is shown.

[0021] Explanation of reference numerals in the attached figures: 1. Turnover box; 2. Vibration table; 3. Fixture. Detailed Implementation

[0022] Preferred embodiments of the present invention will now be described in more detail. While preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0023] like Figure 1-2 As shown, an electrode accelerated baking device includes: Oven; Vibration table 2 is inclinedly set inside the drying oven; The turnover box 1 is set on the vibration table. The turnover box 1 is provided with a limiting groove that cooperates with the electrode sheet. The limiting groove can accommodate multiple stacked electrode sheets. The vibration table 2 can vibrate the turnover box 1 to make the electrode sheets in the turnover box 1 vertically loose.

[0024] Specifically, the oven is used to bake the electrode sheets, while the vibration table 2 vibrates the stacked electrode sheets during baking, making the electrode sheets vertically loose, exposing the internal areas of the stacked electrode sheets, accelerating moisture evaporation, improving baking efficiency, and making baking more uniform. At the same time, the tilted posture has the effect of guiding and restricting the movement of the electrode sheets, preventing disordered movement of the electrode sheets from damaging the electrode tabs.

[0025] Furthermore, the depth of the limiting groove is greater than the thickness of the stacked electrode sheets to prevent the electrode sheets from overflowing the limiting groove during vibration. The vibration table 2 includes a vibration generator and a support platform. The vibration generator's wiring is led out of the oven, allowing for external vibration settings and control.

[0026] In this embodiment, the oven is also equipped with a ventilation structure.

[0027] Specifically, dry nitrogen is introduced through the ventilation structure to replace the evaporated water vapor, thereby reducing oxidation reactions and accelerating baking efficiency.

[0028] In this embodiment, the limiting groove is provided with a tab position, which is located near the high end of the vibration table 2.

[0029] Specifically, the electrode is located at the higher end after tilting, reducing the impact of movement on the electrode.

[0030] In this embodiment, a buffer wear-resistant layer is provided inside the limiting groove.

[0031] Specifically, a wear-resistant buffer layer is used to prevent the electrode from vibrating and wearing down.

[0032] Furthermore, a silicone layer is provided on the inner wall of the limiting groove to buffer against impacts.

[0033] In this embodiment, the tilt angle of the vibration platform is 5-30°.

[0034] Specifically, the tilt angle should be set reasonably, preferably 10-20°.

[0035] In this embodiment, a fixed base 3 is provided inside the oven, and a slope is provided on the fixed base 3. The vibration table 2 is set on the slope.

[0036] Specifically, the tilt angle of the vibration table 2 is adjusted by using the fixed base 3.

[0037] In this embodiment, the ventilation structure includes a vacuum pump and a gas source, the gas source being used to provide dry nitrogen.

[0038] Specifically, during the baking process, vibration is performed simultaneously during the oven's breathing phase, which can shorten the overall baking time. During the oven's vacuuming phase, nitrogen is added to fully remove the moisture inside the stacked electrodes, and the drying nitrogen purging is more thorough.

[0039] Furthermore, the gas source is a nitrogen cylinder, which is connected to the oven via a dryer.

[0040] In this embodiment, the vibration frequency of the vibration table 2 is 10-100 times / min.

[0041] Specifically, the vibration frequency should be adjusted appropriately, preferably 20-40 times / min.

[0042] In this embodiment, the amplitude of the vibration table 2 is controlled to be 5-50mm.

[0043] Specifically, the amplitude should be adjusted appropriately, preferably between 5-30mm.

[0044] In this embodiment, the vibration duration of the vibration table 2 is controlled to be 1-100 min.

[0045] Specifically, the vibration duration should be adjusted appropriately, preferably 5-30 minutes.

[0046] In this embodiment, the electrode accelerated baking device is used for electrode drying as an example: Select a suitable slope and place the fixed base 3 inside the oven. Then, place the vibration table 2 and the turnover box 1 on the slope in sequence. Close the oven and perform a vacuuming and nitrogen replenishment breathing action simultaneously with the vibration action of the vibration table 2. This allows the stacked electrodes to loosen through vibration and fully bake away the moisture in the gaps between the electrodes.

[0047] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. An electrode tab accelerated baking apparatus characterized by, include: Oven; A vibration table, which is inclinedly arranged inside the oven; A turnover box is provided on the vibration table. The turnover box is provided with a limiting groove that cooperates with the electrode sheet. The limiting groove can accommodate multiple stacked electrode sheets. The vibration table can vibrate the turnover box to make the electrode sheets in the turnover box vertically loose.

2. The pole piece bake-out accelerating device according to claim 1, characterized in that, The oven is also equipped with a ventilation structure.

3. The pole piece bake-out accelerating device of claim 1, wherein, The limiting groove is provided with a tab position, which is located near the high end of the vibration table.

4. The pole piece bake-out accelerating device of claim 1, wherein, The limiting groove is provided with a buffer wear-resistant layer.

5. The pole piece bake-out accelerating device of claim 1, wherein, The tilt angle of the vibration table is 5-30°.

6. The pole piece bake-out accelerating device of claim 1, wherein, The oven is equipped with a fixed base, and the fixed base has a slope. The vibration table is set on the slope.

7. The pole piece accelerated bake-out apparatus according to claim 2, wherein The ventilation structure includes a vacuum pump and a gas source, the gas source being used to provide dry nitrogen.

8. The pole piece bake-out accelerating device of claim 1, wherein, The vibration frequency of the vibration table is 10-100 times / min.

9. The pole piece bake-out accelerating device of claim 1, wherein The amplitude of the vibration table is controlled to be 5-50 mm.

10. The pole piece accelerated bake-out apparatus according to claim 1, wherein The vibration duration of the vibration table is controlled to be 1-100 min.

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