An automatic shirt finishing table controller module

Abstract

The utility model discloses a kind of automatic ironing table controller module of shirt, comprising: charging control chip;Energy storage inductance;Damping resistance;Multiple parallel input capacitors are arranged between input and ground, form input end broadband decoupling network;Multiple parallel output capacitors are arranged between battery anode and ground, form output end filter network;Decoupling capacitor is arranged between switch node pin and ground, and damping network is jointly constituted with series damping resistance and energy storage inductance;Temperature detection resistance is arranged between temperature detection pin and ground;Dual-color indicator light system is arranged between battery anode and ground, and dual-color indicator light system includes red indicator light and green indicator light and its corresponding current-limiting resistance;Current setting resistance is arranged between charging current setting pin and ground。This kind of automatic ironing table controller module of shirt has the characteristics that anti-interference ability is strong, integration is high, state indication is clear, temperature control configuration is flexible.

Description

Technical Field

[0001] This utility model relates to an automatic shirt ironing table controller module. Background Technology

[0002] With the widespread application of automation technology in the textile and garment processing industry, equipment such as automatic shirt ironing tables has become an important part of modern garment production lines. These devices are typically equipped with handheld controllers for remote operation and parameter adjustment to improve work efficiency and human-machine interface. To ensure the reliable operation of the handheld controllers, they usually use a single lithium battery as their power source. Therefore, efficient, safe, and reliable lithium battery charging and power indication technology is crucial to the overall system performance and user experience.

[0003] Existing handheld controller battery charging systems mainly employ three technical solutions: basic simple chargers, modular combined charging systems, and integrated chargers. Basic simple chargers typically use a single capacitor for decoupling and a basic charging IC, resulting in a simple structure and low cost, but poor charging performance and a lack of comprehensive protection mechanisms and status indication functions. Modular combined charging systems implement charging control, indication, and protection functions through independent modules. While each module is highly specialized, the overall system is large, has many connection points, a high failure rate, and significant electromagnetic compatibility issues between modules. Integrated chargers use highly integrated chip solutions, offering comprehensive functionality, but generally lack optimization for industrial environments, particularly in terms of interference resistance and status indication.

[0004] In practical applications in garment manufacturing factories, existing charging technologies have several problems: First, the garment processing environment contains numerous sources of static electricity and electromagnetic interference, such as heating elements, steam systems, and high-frequency motors in ironing equipment. Traditional charging systems lack sufficient anti-interference capabilities, easily leading to unstable charging or malfunctioning protection mechanisms. Second, factory operators frequently move and unplug chargers. Traditional single-capacitor setups are prone to generating high-voltage spikes during hot-plugging, threatening not only the battery and circuitry but also interfering with surrounding PLCs, weighing equipment, barcode scanners, and other devices. Third, conventional chargers lack intuitive and clear status indicators, making it difficult for operators to quickly determine the charging status and requiring repeated power-on tests, thus affecting work efficiency. Fourth, factory environments experience significant temperature variations, ranging from low temperatures in cold regions to high temperatures in tropical regions. Existing charger temperature monitoring solutions either rely entirely on dedicated NTC sensors (increasing cost and complexity) or lack temperature protection altogether (reducing safety), lacking flexibility and adaptability.

[0005] Therefore, there is an urgent need for a charging and power indicator module specifically designed for handheld controllers of garment manufacturing equipment. This module should not only meet the special needs of industrial environments, providing efficient and stable charging performance and comprehensive protection functions, but also enhance operational convenience through intuitive status indicators and offer flexible configuration options to adapt to different application scenarios, thereby solving various problems faced by existing technologies in practical applications. Utility Model Content

[0006] The purpose of this invention is to provide an automatic shirt ironing table controller module. This automatic shirt ironing table controller module features strong anti-interference capability, high integration, clear status indication, and flexible temperature control configuration.

[0007] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0008] An automatic shirt ironing table controller module includes: a charging control chip (U14) having a switch node pin, a battery detection pin, a charging current setting pin, a temperature detection pin, and exposed pads; an energy storage inductor (L8) disposed between the switch node pin of the charging control chip and the positive terminal of the battery; a series damping resistor (R36) disposed between the energy storage inductor and the positive terminal of the battery; multiple parallel input capacitors (C12, C13) disposed between the input terminal and ground to form a wideband decoupling network at the input terminal; and multiple parallel output capacitors (C2, C3) disposed between the positive terminal of the battery and ground. 2. C23, C54) form the output filter network; the decoupling capacitor (C25) between the switch node pin and ground, together with the series damping resistor and the energy storage inductor, constitutes the damping network; the temperature sensing resistor (R18) between the temperature sensing pin and ground; the dual-color indicator system between the battery positive terminal and ground, which includes a red indicator (LED3) and a green indicator (LED2) and their corresponding current limiting resistors (R44, R16); and the current setting resistor (R43) between the charging current setting pin and ground.

[0009] The present invention is further configured such that the exposed pads of the charging control chip (U14) are connected to ground for heat dissipation and to provide a low-impedance grounding point.

[0010] The present invention is further configured such that the resistance value of the series damping resistor (R36) is 1Ω, which is used to suppress switching spikes, limit current and reduce electromagnetic interference.

[0011] The present invention is further configured such that the inductance value of the energy storage inductor (L8) is 2.2μH, which has sufficient saturation current margin to handle the peak charging current.

[0012] The present invention is further configured such that the capacitance values ​​of the parallel input capacitors (C12, C13) and the parallel output capacitors (C22, C23, C54) are all 10μF.

[0013] The present invention is further configured such that the connection line between the switching node pin of the charging control chip (U14) and the energy storage inductor (L8) is configured to be as short and thick as possible to reduce the high-frequency loop area.

[0014] The present invention is further configured such that the resistance value of the temperature sensing resistor (R18) is 51kΩ, so that the temperature sensing pin is within the allowable temperature window range, and is compatible with both configuration modes with and without an external thermistor.

[0015] The present invention is further configured such that the cathodes of the red indicator light (LED3) and the green indicator light (LED2) are controlled by the internal open-drain output of the charging control chip (U14) to display the charging, fully charged or fault status.

[0016] The present invention is further configured such that the resistance values ​​of the current-limiting resistors (R44, R16) corresponding to the red indicator light (LED3) and the green indicator light (LED2) are both 200Ω.

[0017] The present invention is further configured such that a heat-dissipating copper sheet and heat-dissipating vias are provided around the charging control chip (U14), the energy storage inductor (L8), and the series damping resistor (R36) to reduce the operating temperature of the components.

[0018] In summary, this utility model has the following beneficial effects:

[0019] Anti-interference and hot-swap performance: This invention employs an innovative distributed capacitor and series damping suppression setup. Parallel capacitors C12 and C13 at the input form a wideband decoupling network, while parallel capacitors C22, C23, and C54 at the output form an output filter network. A series damping resistor R36 is placed between the energy storage inductor L8 and the battery positive terminal, working in conjunction with the switching node decoupling capacitor C25 to form a complete damping network. This distributed multi-capacitor structure with series damping effectively suppresses high-voltage spikes and oscillations generated during hot-swapping, reducing the impact on the battery and circuitry during the process, and also minimizing electromagnetic interference to surrounding equipment. Compared to traditional single large capacitor setups, this solution significantly improves system stability in the frequent plugging and unplugging and high-interference environment of a garment factory while maintaining charging efficiency. Tests show that this setup can suppress hot-swapping spikes within a safe range, and control output ripple below 50mVpp.

[0020] Highly Integrated Structure: This invention integrates charging control, status indication, and temperature protection functions into a small circuit module, employing a single-chip (U14) and a small number of external components to achieve integrated charging, indication, and temperature control. All connection lines, especially the connection between the switching node pins of the charging control chip U14 and the energy storage inductor L8, are designed to be as short and thick as possible to reduce high-frequency loop area and EMI radiation. Simultaneously, the chip's exposed pads are tightly connected to the ground plane, surrounded by heat-dissipating copper foil and vias, forming an efficient thermal management system. This compact and integrated structure significantly reduces the module's size, allowing it to be directly embedded into the handheld controller or wireless light source of a shirt ironing table without additional installation space. It also reduces connection points and wiring length, lowering the failure rate and improving system reliability.

[0021] Intuitive Status Indication System: This invention features a dual-color indicator system consisting of a red LED3 and a green LED2. Different color combinations and on / off states clearly display charging, full charge, and fault statuses. The cathodes of the indicator lights are controlled by the internal open-drain output of the charging control chip U14, automating status switching. Furthermore, the indicator circuitry avoids high-frequency interference areas, ensuring stability and reliability. This visual setup allows operators to immediately understand the battery status without additional testing equipment, simplifying the operation process and improving work efficiency. In a garment manufacturing workshop environment, this clear status indication is particularly valuable, eliminating the need for workers to repeatedly power on and test the machine, accelerating equipment status assessment, and effectively supporting rhythmic production and 5S management on-site.

[0022] Temperature Control Configuration: This invention employs a flexible temperature protection mechanism using a temperature sensing resistor R18 (51kΩ), compatible with both configurations with and without an external thermistor. In the basic configuration, R18 provides an equivalent resistance value, ensuring the temperature sensing pin remains within the allowable temperature window. For scenarios requiring stricter temperature monitoring, an external thermistor can be used to replace or in conjunction with R18. This design addresses the flexibility issue of temperature monitoring in industrial environments, meeting the flexibility requirements of mass production assembly while enabling temperature zone determination in extremely cold / high temperature workshops. This reduces the risk of battery bulging and premature aging, improves system safety and adaptability, and allows the product to adapt to diverse global climatic conditions in garment manufacturing.

[0023] Production and Maintenance Convenience: This invention is designed with production and maintenance convenience in mind. The module uses standard electronic components; the values ​​of the energy storage inductor L8 (2.2μH), series damping resistor R36 (1Ω), current setting resistor R43, and all capacitors have been optimized to ensure system stability under various operating conditions. Simultaneously, the flexible configuration of the temperature sensing resistor R18 allows the production line to adjust assembly plans according to different product requirements and operating environments, eliminating the need for numerous different SKUs and reducing inventory management difficulty and production costs. In terms of maintenance, the clear status feedback provided by the dual-color indicator system enables maintenance personnel to quickly diagnose system status, reducing fault diagnosis time and repair costs, and improving the overall availability of the equipment. Attached Figure Description

[0024] Figure 1 This is the overall circuit schematic diagram of this utility model. Detailed Implementation

[0025] In the description of this utility model, it should be noted that the terms "up," "down," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] like Figure 1 As shown, this utility model provides an automatic shirt ironing table controller module, which is particularly suitable for handheld controllers of garment manufacturing equipment such as automatic shirt ironing tables. Functionally, the module can be divided into five main areas: an input decoupling area, a charging control core area, a power conversion area, an output filtering area, and an indication and protection area.

[0027] The input decoupling area includes multiple input capacitors C12 and C13 connected in parallel between the input terminal (VIN) and ground (GND), each with a capacitance of 10μF. These parallel capacitors form a wideband decoupling network, effectively filtering out low-frequency ripples in the input power supply and providing transient current, ensuring the stability of the input voltage, while suppressing voltage drops caused by source impedance such as cables and adapters.

[0028] At the center of the charging control core area is the charging control chip U14 (model IP2312), which uses a small package and has multiple functional pins, including:

[0029] VIN(8): Connect to the input power supply terminal;

[0030] SW(7): Switch node pin, connected to energy storage inductor L8;

[0031] BAT(5): Battery detection pin, directly connected to and detects the battery terminal voltage;

[0032] ICHG(6): Charging current setting pin, connected to ground via current setting resistor R43;

[0033] NTC(4): Temperature sensing pin, connected to ground via temperature sensing resistor R18;

[0034] D1(1) / D2(3): Data / protocol pins used for charging identification or production testing;

[0035] EP: Exposed pad, connected to ground, used for heat dissipation and providing a low-impedance grounding point.

[0036] The exposed pads of chip U14 are directly soldered onto the copper foil and connected to the ground plane through multiple thermal vias, forming an efficient heat dissipation channel. Thermal copper foil and vias are arranged around the chip to reduce its operating temperature and ensure stable operation over extended periods.

[0037] The power conversion section includes an energy storage inductor L8, a series damping resistor R36, and a decoupling capacitor C25. The energy storage inductor L8 has an inductance of 2.2μH, with one end connected to the SW pin of chip U14 and the other end connected to the series damping resistor R36. L8 has sufficient saturation current margin to withstand peak charging current without saturation. The series damping resistor R36 has a resistance of 1Ω and is connected in series between inductor L8 and the battery positive terminal (BAT+), serving multiple functions of damping, current limiting, and EMI suppression. The decoupling capacitor C25 (10μF) is connected between the SW node and ground, forming a complete damping network with R36 and L8, effectively suppressing ringing and voltage spikes at the switching node.

[0038] The output filter section consists of multiple parallel output capacitors C22, C23, and C54, each with a capacitance of 10μF. These capacitors are connected in parallel between the battery positive terminal (BAT+) and ground, forming a low-impedance output filter network. This parallel multi-capacitor configuration reduces the equivalent series resistance (ESR), improves ripple suppression capability, and ensures a stable charging voltage for the battery.

[0039] The indicator and protection zone includes a dual-color indicator system and a temperature protection circuit. The dual-color indicator system consists of a red indicator LED3 and a green indicator LED2, which are connected to the battery positive terminal (BAT+) via current-limiting resistors R44 and R16 (both 200Ω), respectively. The cathodes of the LEDs are controlled by the internal open-drain output of chip U14. Depending on the charging status (charging, fully charged, fault), the chip illuminates the corresponding colored indicator by pulling down the corresponding LED cathode, thus visualizing the status. The wiring of the indicator circuit avoids the high-frequency region of SW / L8, reducing flicker crosstalk and ensuring the stability and reliability of the indication.

[0040] The temperature protection circuit consists of a 51kΩ temperature sensing resistor R18 connected between the NTC pin and ground. This resistor provides an equivalent resistance value that keeps the NTC pin within the allowable temperature window, suitable for basic temperature protection needs. For more stringent temperature monitoring, an external NTC thermistor can be connected to replace or work in conjunction with R18 to achieve more accurate temperature determination. This setup is compatible with both configurations with and without an external thermistor, providing flexible temperature control strategies.

[0041] The current setting resistor R43 (43kΩ) is connected between the ICHG pin and ground, and sets the maximum charging current according to a specific ratio. Based on the characteristics of the IP2312 chip, the relationship between the charging current I_CHG and R43 is approximately I_CHG = K / R43, where K is a device constant.

[0042] The data identification resistor R17 (1kΩ) is connected between the BAT+ and D2 pins for charging identification or production testing, and works in conjunction with the chip's internal detection / indication logic.

[0043] The connection line between the switching node pin (SW) of the charging control chip U14 and the energy storage inductor L8 is designed to be as short and thick as possible to reduce the high-frequency loop area. Similarly, the traces of the entire high-frequency loop (U14SW→L8→R36→output capacitor→GND→U14) are also designed to be as short and thick as possible to minimize parasitic inductance and radiated EMI, thereby improving system performance.

[0044] The working process of this utility model is as follows: When the input terminal VIN is connected to a power source (usually 5V), the charging control chip U14 starts up and may identify the charging source through the D1 / D2 pins (if needed) to determine the maximum available current. Depending on the battery status, the system automatically enters either constant current charging (CC) mode or constant voltage charging (CV) mode. In CC mode, the chip will charge BAT+ with a constant current through a switching mechanism according to the current value set by R43, with the inductor current alternating between SW / L8. When the battery voltage approaches the target value, the system will switch to CV mode, and the charging current will gradually decrease. When the current drops to the termination threshold, the system will change the LED state, indicating a full charge status via a dual-color indicator. Throughout the charging process, the NTC pin will continuously monitor the temperature. If an abnormality (overheating / overcooling) is detected, the system will pause or derating the charging process to protect the battery and device safety.

[0045] In practical applications at garment manufacturing plants, this automatic shirt ironing table controller module effectively handles frequent plugging and unplugging operations and complex electromagnetic environments. The multi-capacitor arrays on both the input and output sides, combined with a damping network of R36 and C25 capacitors, effectively suppress voltage spikes and oscillations generated during hot-plugging, protecting the circuitry and battery from damage while reducing interference to peripheral equipment. A dual-color indicator system provides intuitive status feedback, allowing operators to immediately understand the charging status and improve work efficiency. A flexible temperature control strategy enables the module to adapt to different environmental conditions, optimizing cost and complexity while ensuring safety.

[0046] The structural design of this utility model follows several principles: minimizing high-frequency loops, proximity of input decoupling, separation of analog and power grounds, distributed capacitor layout, and optimized thermal management. These principles ensure the stability and reliability of the module under various operating conditions, making it particularly suitable for the special needs of mobile workstations, portable handheld devices, and frequent plugging / unplugging requirements in garment manufacturing equipment such as shirt ironing tables.

[0047] Through the above technical solutions, this utility model solves the problems faced by traditional charging systems in industrial environments, such as insufficient anti-interference ability, large hot-swapping impact, unclear status indication, and inflexible temperature control configuration. It provides a highly integrated, stable, and easy-to-operate automatic shirt ironing table controller module with significant application prospects.

[0048] The following experiments were designed in this application to verify the technical effects of this utility model:

[0049] 1. The testing employed a comparative experimental method, directly comparing this application with three technical solutions (a basic simplified charger, a modular combined charging system, and a standard integrated charger). The test environment simulated real garment factory conditions, including continuous hot-plugging tests, EMI interference injection, status recognition speed tests, and temperature adaptability tests. All tests were conducted on a handheld controller on an actual shirt ironing table, with each test repeated 50 times to ensure data reliability. Parameters were recorded using professional equipment such as oscilloscopes, EMI analyzers, and thermal imagers.

[0050] 2. Technical Effect Comparison Table

[0051]

[0052] 3. Verification Conclusion

[0053] Experimental results show that the present invention is significantly superior to the traditional solution.

[0054] In hot-plug testing, traditional chargers generate voltage spikes as high as 18V accompanied by noticeable ringing, while this application controls the voltage spikes below 7.5V without noticeable ringing, representing an improvement of 58%. This improvement directly enhances the reliability of the system under frequent plugging and unplugging conditions, effectively protecting the battery and circuitry.

[0055] EMI testing shows that the radiated interference of this application is 8-13 dB lower than that of traditional solutions, not only meeting the stringent Class B EMI standard but also maintaining a margin of over 5 dB. This EMI performance ensures that the charging module will not interfere with surrounding PLC controllers, weighing systems, and barcode scanning equipment, solving common electromagnetic compatibility problems in garment factories.

[0056] Status indication tests show that operators typically require 38-65 seconds of measurement confirmation time to identify the status of a conventional charger, while the dual-color indication system of this application reduces the status recognition time to less than 2 seconds, an improvement of 95%. This improvement is particularly important in takt time production environments, significantly enhancing equipment management efficiency.

[0057] Temperature adaptability tests confirm that this application can operate reliably in a wide temperature range from -20°C to 45°C, and can adapt to different climatic conditions with simple configuration adjustments, while traditional solutions require completely different settings to meet various temperature requirements.

[0058] Comprehensive evaluation shows that the integrated design of this application reduces the volume by 60%, the number of connection points by 67%, and the failure rate by 85%. These improvements collectively make the charging module suitable for mobile workstations, portable handheld operation, and frequent plugging / unplugging conditions in garment manufacturing equipment such as shirt ironing tables, thereby improving equipment reliability and operational efficiency.

Claims

1. A controller module for an automatic shirt ironing table, characterized in that, include: The charging control chip (U14) has a switch node pin, a battery detection pin, a charging current setting pin, and a temperature detection pin. The energy storage inductor (L8) is located between the switching node pin of the charging control chip and the positive terminal of the battery. A series damping resistor (R36) is provided between the energy storage inductor and the positive terminal of the battery; Multiple parallel input capacitors (C12, C13) are placed between the input terminal and ground to form a wideband decoupling network at the input terminal; Multiple parallel output capacitors (C22, C23, C54) are placed between the positive terminal of the battery and ground to form an output filter network; The decoupling capacitor (C25) placed between the switching node pin and ground, together with the series damping resistor and the energy storage inductor, forms a damping network; A temperature sensing resistor (R18) is provided between the temperature sensing pin and ground; A dual-color indicator system is installed between the positive terminal of the battery and ground. The dual-color indicator system includes a red indicator (LED3) and a green indicator (LED2) and their corresponding current-limiting resistors (R44, R16). A current setting resistor (R43) is provided between the charging current setting pin and ground.

2. The automatic shirt ironing table controller module according to claim 1, characterized in that, The exposed pads of the charging control chip (U14) are connected to ground for heat dissipation and to provide a low-impedance grounding point.

3. The automatic shirt ironing table controller module according to claim 1, characterized in that, The series damping resistor (R36) has a resistance of 1Ω and is used to suppress switching spikes, limit current, and reduce electromagnetic interference.

4. The automatic shirt ironing table controller module according to claim 1, characterized in that, The energy storage inductor (L8) has an inductance of 2.2 μH and sufficient saturation current margin to handle peak charging current.

5. The automatic shirt ironing table controller module according to claim 1, characterized in that, The capacitance values ​​of the parallel input capacitors (C12, C13) and the parallel output capacitors (C22, C23, C54) are both 10μF.

6. The automatic shirt ironing table controller module according to claim 1, characterized in that, The connection line between the switching node pin of the charging control chip (U14) and the energy storage inductor (L8) is designed to be as short and thick as possible to reduce the high-frequency loop area.

7. The automatic shirt ironing table controller module according to claim 1, characterized in that, The temperature sensing resistor (R18) has a resistance of 51kΩ, which keeps the temperature sensing pin within the allowable temperature window range and is compatible with both configuration modes with and without an external thermistor.

8. The automatic shirt ironing table controller module according to claim 1, characterized in that, The cathodes of the red indicator light (LED3) and the green indicator light (LED2) are controlled by the internal open-drain output of the charging control chip (U14) to display the charging status, full charge, or fault status.

9. The automatic shirt ironing table controller module according to claim 1, characterized in that, The resistance values ​​of the current-limiting resistors (R44, R16) corresponding to the red indicator light (LED3) and the green indicator light (LED2) are both 200Ω.

10. The automatic shirt ironing table controller module according to claim 1, characterized in that, The charging control chip (U14), the energy storage inductor (L8), and the series damping resistor (R36) are surrounded by heat-dissipating copper foil and heat-dissipating vias to reduce the operating temperature of the components.

Images