Battery color rubber defoaming color rubber curing process and color rubber curing device

What is AI technical title?
AI technical title is built by Patsnap AI team. It summarizes the technical point description of the patent document.
By employing a three-stage curing process and device design, the problem of air bubbles in battery color adhesive under low-temperature conditions was solved, achieving efficient bubble removal and increased color adhesive hardness, shortening curing time, and improving sealing effect and appearance quality.

CN122393352APending Publication Date: 2026-07-14TIANNENG BATTERY GROUP

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Applications(China)
Current Assignee / Owner: TIANNENG BATTERY GROUP
Filing Date: 2026-03-31
Publication Date: 2026-07-14

AI Technical Summary

Technical Problem

In low-temperature environments, the color adhesive of batteries has poor fluidity and is prone to generating air bubbles that are not expelled in time, affecting the sealing effect and appearance. Existing technologies have not been able to effectively solve this problem.

Method used

The process employs a three-stage curing process, including a defoaming stage at 50-55℃ for 15-20 minutes, followed by hot air blowing at 240-260℃; a curing stage at 65-70℃ for 22-25 minutes; and a stabilization stage at 45-50℃ for 10-15 minutes. Combined with the design of a three-stage curing kiln and heat insulation sleeve, this ensures that air bubbles are removed and the hardness of the colorant meets the standards.

Benefits of technology

It effectively removes air bubbles, ensures the color adhesive hardness reaches ≥60HB, shortens the curing time, and improves the sealing effect and appearance quality.

✦ Generated by Eureka AI based on patent content.

Smart Images

Figure CN122393352A_ABST

Patent Text Reader

Abstract

The application discloses a color glue curing process and a color glue curing device for battery color glue defoaming, and the color glue curing process comprises the following steps: a defoaming stage: after color glue is applied to the positive and negative terminals of a battery, the battery is defoamed at 50-55 DEG C for 15-20 min; during the defoaming process, hot air is blown to the color glue, the blowing temperature of the hot air is 240-260 DEG C, and the blowing time is 3-4 s; a curing stage: the defoamed battery is cured at 65-70 DEG C for 22-25 min; and a stabilization stage: the temperature is lower than that in the curing stage, and after the stabilization stage is completed, the hardness of the color glue is greater than or equal to 60 HB. Through the three-stage color glue curing process after the battery is glued, hot air defoaming is carried out in the defoaming stage, air bubbles in the color glue are removed, then the color glue is cured in the second curing stage, the temperature is appropriately reduced after the curing is completed, the stabilization stage is carried out, the color glue is ensured to be completely cured, and the hardness of the color glue reaches the standard.

Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This invention belongs to the field of lead-acid battery technology, specifically relating to a color glue curing process and device for defoaming color glue in lead-acid batteries. Background Technology

[0002] After the battery terminals are welded, the welded surfaces need to be covered with colored adhesive to achieve a sealing effect and to distinguish the positive and negative polarities. The colored adhesive used is red for the positive polarity and blue for the negative polarity.

[0003] Colorant is a solid material with a three-dimensional network structure formed by the reaction of epoxy resin (epoxy groups [-O-CH2-CH2-O-]) and curing agent, with a mass ratio of approximately 2:1. This solid material has excellent mechanical properties, chemical resistance, electrical insulation properties, and adhesive properties.

[0004] The invention application with publication number CN102376906A discloses a method for filling a storage battery with colored adhesive, which is operated according to the following steps: (i) mixing the main adhesive and the curing agent in the following weight ratio to prepare an adhesive solution: main adhesive: curing agent = 100: (45-55); (ii) placing the above adhesive solution in a container and letting it stand for 2-4 minutes to remove air bubbles; (iii) pouring the above colorless adhesive solution into the holes of the storage battery terminals; (iv) letting it stand for 0.8-1.2 hours and then pouring colored adhesive solution into the terminals respectively; (v) curing at room temperature for 5-6 hours, or curing at 55-65℃ for 1-1.5 hours.

[0005] The invention application with publication number CN118117139A discloses a cooling device for lead-acid batteries, including a box body. The box body is provided with a first temperature zone and a second temperature zone. The first temperature zone is located above the second temperature zone. The first temperature zone is used to cure the color glue of the semi-finished battery. The second temperature zone is used to cool the battery after the color glue has been cured. The controller controls the temperature of the first temperature zone to T1 and the controller controls the temperature of the second temperature zone to T2. T2 is 0~10℃ and T1 is greater than T2.

[0006] However, due to environmental factors, when the ambient temperature is below 5℃ (winter), the color adhesive has poor fluidity, and air bubbles that are not expelled in time often form on the surface, affecting the sealing effect and appearance, requiring rework. The aforementioned existing technologies do not take this technical problem into account. Summary of the Invention

[0007] To address the aforementioned shortcomings in the prior art, this invention provides a color glue curing process and device for defoaming color glue in storage batteries.

[0008] This invention first provides a color adhesive curing process for defoaming battery color adhesives, comprising the following steps: Defoaming stage: After applying colored adhesive to the positive and negative terminals of the battery, defoam the battery at 50~55℃ for 15~20 minutes. During the defoaming process, blow hot air onto the colored adhesive at a temperature of 240~260℃ for 3~4 seconds. Curing stage: Cure the defoamed battery at 65~70℃ for 22~25 minutes; Stabilization stage: The temperature is lower than that of the curing stage. After the stabilization stage, the hardness of the color adhesive is ≥60HB.

[0009] Preferably, the pressure of the hot air blown during the defoaming stage is 60~80kPa.

[0010] Preferably, the angle of the hot air blown during the defoaming stage is 60-80° with the surface of the color glue.

[0011] Preferably, during the stabilization phase, the cured battery is stabilized at 45~50℃ for 10~15 minutes.

[0012] After the battery leaves the kiln, the color adhesive is tested for hardness using a portable Barcol hardness tester. If the hardness is ≥60HB, it is considered normal curing. If the hardness is low and does not meet the requirements, it is considered false curing. During the stabilization stage, the temperature for stable use is appropriately increased and the stabilization time is appropriately extended.

[0013] Preferably, the hot air blowing for the color glue during the defoaming stage is located in the later stage of the entire defoaming process.

[0014] This invention further provides a color glue curing device for defoaming battery color glue, used in the color glue curing process for defoaming battery color glue, the color glue curing device for defoaming battery color glue includes: The three-stage curing kiln consists of three sections: the first section for defoaming, the second for curing, and the third for stabilization. The first section also includes electric heating elements for blowing hot air. A conveyor belt passes through the three-section curing kiln and is used to transport the batteries. The conveyor belt can be divided into three sequentially connected belts in each section of the three-section curing kiln, or a single, continuous conveyor belt can be used.

[0015] Preferably, the heating element is covered with a heat-insulating sleeve, and the heat-insulating sleeve has a heat source hole at the location corresponding to the color adhesive of the battery. The heat-insulating sleeve is used for heat preservation and also prevents the battery casing from being damaged by heat. Preferably, the heat-insulating sleeve is made of aluminum silicate fiber.

[0016] More preferably, multiple batteries are conveyed side by side on the conveyor belt, the heat insulation sleeve is arranged horizontally and perpendicular to the conveying direction of the conveyor belt, and the heat insulation sleeve is provided with a plurality of heat source holes.

[0017] Preferably, the heat insulation sleeve is installed in the first section of the three-section curing kiln via a mounting bracket. The mounting bracket is also equipped with a sensor for detecting the battery. When the sensor detects that the battery has reached the corresponding position, the conveyor belt pauses its conveying operation, and hot air is blown onto the color adhesive. Generally, the sensor is located upstream of the heating element. After the sensor detects the battery's arrival, the conveyor belt can be paused for a certain period, such as 2-5 seconds, during which hot air is blown onto the color adhesive.

[0018] The defoaming stage is set at 50-55℃, as this temperature is optimal for the polymerization reaction of epoxy resin. During the reaction, bubbles easily rise to the top and are eliminated. Any remaining bubbles are almost completely eliminated under the hot air blowing environment at 240-260℃. The curing stage is set at 65-70℃; higher temperatures improve the molding of the epoxy resin. The stabilization stage is set at 45-50℃; appropriately lowering the temperature brings it closer to ambient temperature, which is beneficial for the stability of the epoxy resin's components.

[0019] Beneficial effects of this invention: This invention employs a three-stage color adhesive curing process after the battery is coated with adhesive. First, a defoaming stage is performed using hot air to remove air bubbles from the color adhesive. Then, a second curing stage is conducted to cure the color adhesive. After curing, the temperature is appropriately reduced for a stabilization stage to ensure that the color adhesive is properly cured and that its hardness meets the standards. Attached Figure Description

[0020] Figure 1 A schematic diagram of a color glue curing device for defoaming the color glue in storage batteries.

[0021] Figure 2 This is a schematic diagram showing the positional relationship between the heating element and the battery in the direction perpendicular to the battery's transmission path.

[0022] Figure 3 This is a schematic diagram showing the positional relationship between the heating element and the battery along the battery transmission direction.

[0023] Reference numerals: 1. Battery, 11. Color glue, 2. Three-stage curing kiln, 21. Heating tube, 22. Heat insulation sleeve, 23. Heat source outlet, 24. Mounting bracket, 25. Sensor, 3. Conveyor belt. Detailed Implementation

[0024] Example 1 like Figures 1-3 As shown, a color glue curing device for defoaming battery color glue includes a three-stage curing kiln 2 and a conveyor belt 3. Figure 1 As shown, the three-section curing kiln 2 starts from the upstream ( Figure 1 (middle left) to downstream ( Figure 1The three-section curing kiln 2 (right side) is divided into three sections: the first section, the second section, and the third section. The first section is used for the defoaming stage, the second section for the curing stage, and the third section for the stabilization stage. The first section is also equipped with an electric heating element 21 for blowing hot air. The electric heating element 21 is covered with a heat insulation sleeve 22, and the heat insulation sleeve 22 has a heat source hole 23 at the position corresponding to the color glue 11 of the battery 1. A blower for blowing air is also connected to the heat insulation sleeve 22, and the blower drives the hot air to be blown out from the heat source hole 23.

[0025] Conveyor belt 3 passes through the three-section curing kiln 2 and is used to transport batteries 1. Multiple batteries 1 are transported side by side on conveyor belt 3. Figure 3 The structure shown depicts three batteries 1 being conveyed side-by-side on a conveyor belt 3. A heat insulation sleeve 22 is positioned horizontally and perpendicular to the conveyor belt 3, and the heat insulation sleeve 22 is equipped with multiple heat outlet holes 23.

[0026] The heat insulation sleeve 22 is installed in the first section of the three-section curing kiln 2 via the mounting bracket 24. The mounting bracket 24 is also equipped with a sensor 25 for detecting the battery 1. When the sensor 25 detects that the battery 1 has reached the corresponding position, the conveyor belt 3 stops conveying and blows hot air onto the color glue 11.

[0027] A defoaming and curing process for battery color adhesive includes the following steps: (1) Defoaming stage: After applying colorant to the positive and negative terminals of the battery, defoam the battery at 50~55℃ for 15~20min. During the defoaming process, hot air is blown onto the colorant at a temperature of 240~260℃ for 3~4s. The air pressure of the hot air during the defoaming stage is 60~80kPa. The angle of the hot air during the defoaming stage is 60~80° with the surface of the colorant. The hot air blowing onto the colorant during the defoaming stage is located in the later stage of the entire defoaming process.

[0028] (2) Curing stage: Cur the defoamed battery at 65~70℃ for 22~25min.

[0029] (3) Stabilization stage: The temperature is lower than that of the curing stage. After the stabilization stage, the hardness of the color adhesive is ≥60HB. During the stabilization stage, the cured battery is stabilized at 45~50℃ for 10~15min.

[0030] Example 2 The battery color adhesive is treated using the color adhesive defoaming and curing process described in Example 1. The structure of the color adhesive defoaming and curing device used is as follows: Figures 1-3 As shown.

[0031] Specifically, the color glue curing process for defoaming the battery color glue includes the following steps: (1) Defoaming stage: After applying colorant to the positive and negative terminals of the battery, the battery is defoamed at 50°C for 20 minutes. During the defoaming process, hot air is blown onto the colorant at a temperature of 260°C for 3 seconds. The air pressure of the hot air during the defoaming stage is 60 kPa. The angle of the hot air during the defoaming stage is 80° to the surface of the colorant. The hot air blowing onto the colorant during the defoaming stage is located in the later stage of the entire defoaming process.

[0032] (2) Curing stage: The defoamed battery is cured at 70°C for 22 minutes.

[0033] (3) Stabilization stage: Stabilize the cured battery at 50°C for 10 minutes.

[0034] In contrast, a conventional process was used for color adhesive curing.

[0035] Twenty batteries were treated using both the defoaming process (i.e., the process of this invention) and the conventional process (i.e., the existing process, with the temperature set at 60°C throughout). After treatment, the color adhesive in the terminal slots on the top surface of the batteries was tested, and the number of air bubbles and the Barcol hardness were measured respectively.

[0036] The number of air bubbles is detected visually. Since epoxy resin is transparent, the presence and number of air bubbles are determined by visual inspection.

[0037] Table 1 The results are shown in Table 1. As can be seen, when using the device and process of the present invention to cure the color glue, the total number of bubbles is greatly reduced, and the color glue has a high Barcol hardness, which can reach >70HBa.

[0038] Example 3 The battery color adhesive is treated using the color adhesive defoaming and curing process described in Example 1. The structure of the color adhesive defoaming and curing device used is as follows: Figures 1-3 As shown.

[0039] Specifically, the color glue curing process for defoaming the battery color glue includes the following steps: (1) Defoaming stage: After applying colorant to the positive and negative terminals of the battery, the battery is defoamed at 55°C for 15 minutes. During the defoaming process, hot air is blown onto the colorant at a temperature of 240°C for 4 seconds. The air pressure of the hot air during the defoaming stage is 80 kPa. The angle of the hot air during the defoaming stage is 60° to the surface of the colorant. The hot air blowing onto the colorant during the defoaming stage is located in the later stage of the entire defoaming process.

[0040] (2) Curing stage: Cur the defoamed battery at 65°C for 25 minutes.

[0041] (3) Stabilization stage: Stabilize the cured battery at 45°C for 15 minutes.

[0042] In contrast, a conventional process was used for color adhesive curing.

[0043] Twenty batteries were treated using both the defoaming process (i.e., the process of this invention) and the conventional process (i.e., the existing process, with the temperature set at 60°C throughout). After treatment, the color adhesive in the terminal slots on the top surface of the batteries was tested, and the number of air bubbles and the Barcol hardness were measured respectively.

[0044] Table 2 The results are shown in Table 2. As can be seen, when using the device and process of the present invention to cure the color glue, the total number of bubbles is greatly reduced, and the color glue has a high Barcol hardness, which can reach >70HBa.

[0045] The hardness achieved by conventional processes using existing technologies is less than 60 HB. Existing technologies typically require a 36-hour cooling period before proceeding to the subsequent acid-curing process, resulting in a lengthy overall process time. In contrast, the process described in this application only requires 12-16 hours for the subsequent acid-curing process, significantly reducing the curing time of the color adhesive and improving the curing effect.

Claims

1. A color adhesive curing process for defoaming storage battery color adhesive, characterized in that, Includes the following steps: Defoaming stage: After applying colored adhesive to the positive and negative terminals of the battery, defoam the battery at 50~55℃ for 15~20 minutes. During the defoaming process, blow hot air onto the colored adhesive at a temperature of 240~260℃ for 3~4 seconds. Curing stage: Cure the defoamed battery at 65~70℃ for 22~25 minutes; Stabilization stage: The temperature is lower than that of the curing stage. After the stabilization stage, the hardness of the color adhesive is ≥60HB.

2. The color adhesive curing process for defoaming the battery color adhesive according to claim 1, characterized in that, During the defoaming stage, the pressure of the hot air blown is 60~80 kPa.

3. The color adhesive curing process for defoaming the battery color adhesive according to claim 1, characterized in that, During the defoaming stage, the angle of the hot air blowing should be 60-80° with the surface of the color glue.

4. The color adhesive curing process for defoaming the battery color adhesive according to claim 1, characterized in that, During the stabilization phase, the cured battery is stabilized at 45~50℃ for 10~15 minutes.

5. The color adhesive curing process for defoaming the battery color adhesive according to claim 1, characterized in that, The hot air blowing process for the color glue during the defoaming stage is located in the later stage of the entire defoaming process.

6. A color glue curing device for defoaming battery color glue, used in the color glue curing process for defoaming battery color glue as described in any one of claims 1 to 5, characterized in that, The battery color glue defoaming and color glue curing device includes: The three-stage curing kiln consists of a first stage for defoaming, a second stage for curing, and a third stage for stabilization. The first stage also includes an electric heating element for blowing hot air. A conveyor belt passes through the three-section curing kiln and is used to transport the batteries.

7. The color glue curing device for defoaming the color glue in a storage battery according to claim 6, characterized in that, The heating element is covered with a heat insulation sleeve, and the heat insulation sleeve has a heat source hole at the position corresponding to the color glue of the battery.

8. The color glue curing device for defoaming the color glue in a storage battery according to claim 7, characterized in that, Multiple batteries are transported side by side on the conveyor belt. The heat insulation sleeve is arranged horizontally and perpendicular to the conveyor belt's transport direction, and the heat insulation sleeve is provided with multiple heat source holes.

9. The color glue curing device for defoaming the color glue in a storage battery according to claim 8, characterized in that, The heat insulation sleeve is installed in the first section of the three-section curing kiln via a mounting bracket. The mounting bracket is also equipped with a sensor for detecting the battery. When the sensor detects that the battery has reached the corresponding position, the conveyor belt stops conveying and hot air is blown onto the color glue.