Electric soldering iron

Abstract

The utility model discloses an electric soldering iron. The electric soldering iron comprises a soldering iron head and a soldering iron body, the vibration module generates a static detection signal or a vibration detection signal; the discharging module transmits current to the soldering bit; the main control module comprises a timing unit, the main control module responds to the static detection signal and triggers the timing unit to execute timing operation, and when the timing time of the timing unit reaches a preset duration and the static detection signal is continuously detected within the timing time, the main control module enters a dormant state to enable the discharging module to transmit a first current to the soldering bit; when the timing time of the timing unit does not reach the preset duration, the vibration detection signal is detected, the main control module enters the normal working state so that the discharging module can transmit second current to the soldering bit, and the second current is larger than the first current. The intelligence and safety of the electric soldering iron are improved, energy is saved, and the service life of a battery of the electric soldering iron is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of soldering iron technology, and in particular to an electric soldering iron. Background Technology

[0002] Soldering irons are essential tools in electronic product manufacturing and appliance repair, primarily used for soldering electronic components and wires. Most soldering irons on the market are controlled by a push-button switch; heating continues when the switch is on and turns off when the switch is off. Sometimes users forget to turn off the switch after use, leaving the soldering iron continuously operating, posing a safety hazard. Utility Model Content

[0003] This utility model provides a soldering iron that solves the defect in the prior art where the power-on state of the soldering iron cannot be controlled during use.

[0004] This application provides a soldering iron, including a soldering tip and a soldering iron body, the soldering iron body being connected to the soldering tip. The soldering iron body includes: a power module for providing power; a vibration module for generating a stationary detection signal in response to the soldering iron being in a stationary state, or generating a vibration detection signal in response to a user's operation of the soldering iron; a discharge module electrically connected to the power module for transmitting current to the soldering tip; and a main control module electrically connected to the power module, the vibration module, and the discharge module, respectively. The main control module includes a timing unit, which, in response to the stationary detection signal, triggers the timing unit to perform a timing operation. When the timing unit's timing time reaches a preset duration and the stationary detection signal is continuously detected within the timing time, the main control module enters a sleep state to allow the discharge module to transmit a first current to the soldering tip; when the timing unit's timing time does not reach the preset duration and the vibration detection signal is detected, the main control module enters a normal operating state to allow the discharge module to transmit a second current to the soldering tip, the second current being greater than the first current.

[0005] In some embodiments, the vibration module includes: a vibration switch, configured to enter a closed state in response to a user's operation of the soldering iron, or to enter an off state in response to the soldering iron being stationary; and a vibration detection circuit, electrically connected to the vibration switch, configured to form a closed loop with the vibration switch in response to the vibration switch entering the closed state, thereby outputting the vibration detection signal; or to output the stationary detection signal in response to the vibration switch entering the off state.

[0006] In some embodiments, the vibration detection circuit includes: a current-limiting voltage divider circuit, including a first node, a second node, and a third node, wherein the first node is supplied with the power supply, the vibration switch is electrically connected to the second node, and the third node is used to output the vibration detection signal or the stationary detection signal; and a filter circuit, electrically connected between the first node and the second node.

[0007] In some embodiments, the current-limiting voltage divider circuit includes a first resistor and a second resistor, the filter circuit includes a first capacitor, the first resistor is connected to the first node and the third node respectively, the first capacitor is connected in parallel with the first resistor, and the second resistor is connected to the third node and the second node respectively.

[0008] In some embodiments, the soldering iron body further includes a gear detection circuit, an indicator light circuit, and a button circuit. The main control module is electrically connected to the gear detection circuit, the indicator light circuit, and the button circuit, respectively. The main control module is used to respond to the gear detection signal output by the gear detection circuit and control the working state of the indicator light circuit. The button circuit is also electrically connected to the power module and is used to respond to a received press operation and generate a button signal. The main control module is also used to respond to the button signal and the stillness detection signal to trigger the timing unit to perform a timing operation.

[0009] In some embodiments, the gear position detection circuit includes a sliding rheostat, a first terminal of which is supplied with the power supply, a second terminal of which is grounded, and a third terminal of which is electrically connected to the main control module. The sliding rheostat is used to respond to the user's sliding operation and outputs the gear position detection signal based on the third terminal.

[0010] In some embodiments, the power module includes: a battery electrically connected to the vibration module, the discharge module, and the main control module, respectively, for providing power; a battery protection circuit electrically connected to the battery and the main control module, respectively, for detecting the battery's operating information so that the main control module performs battery protection operations according to the operating information; and a charging circuit electrically connected to the discharge module and the battery, respectively, for providing power to the battery and to the discharge module.

[0011] In some embodiments, the charging circuit includes: a charging interface circuit for connecting to an adapter; a charging activation circuit electrically connected to the charging interface circuit and the main control module, respectively, for responding to the charging voltage output by the adapter through the charging interface circuit, triggering the main control module to control the discharging module to receive the charging voltage input to transmit current to the soldering iron tip; and a charging management circuit electrically connected to the charging interface circuit, the main control module, and the battery, respectively, for responding to the charging voltage input to provide power to the battery.

[0012] In some embodiments, the discharge module includes: a first discharge circuit electrically connected to the charging interface circuit and the main control module, respectively, for entering a discharge state in response to a first discharge signal output by the main control module, so that the current corresponding to the charging voltage is transmitted to the soldering tip via the first discharge circuit; and a second discharge circuit electrically connected to the battery and the main control module, for entering a discharge state in response to a second discharge signal output by the main control module, so that the current output by the battery is transmitted to the soldering tip via the second discharge circuit.

[0013] In some embodiments, the soldering iron body further includes a current detection circuit, which is electrically connected to the power module and the main control module respectively, for detecting the current transmitted from the discharge module to the soldering iron tip, so that the main control module performs overcurrent protection operation according to the detected current.

[0014] The beneficial effects of the soldering iron provided in this application embodiment are as follows: The soldering iron provided in this application embodiment has a vibration module that can detect the static state of the soldering iron or the user's actions, generating corresponding detection signals. This vibration module helps the soldering iron understand the user's operating state. The main control module can trigger a timing operation based on the received static detection signal. When the timing time reaches a preset duration and the static detection signal is continuously detected during this period, the main control module will enter a sleep state, causing the discharge module to transmit a first current to the soldering tip. When a vibration detection signal is detected before the timing time reaches the preset duration, the main control module will enter a normal operating state, causing the discharge module to transmit a second current to the soldering tip. The soldering iron in this application embodiment can automatically switch its working state according to the user's operating state, such as entering a sleep state when static and resuming normal operating state when user actions are detected. This design not only improves the energy efficiency of the soldering iron, saving energy and extending battery life, but also responds to the user's actual operating state. This intelligent design improves the user experience, allowing the user to focus less on turning the soldering iron on and off, thus improving operational convenience. Furthermore, by automatically switching working states, it can reduce potential safety hazards caused by prolonged operation. Attached Figure Description

[0015] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0016] Figure 1 This is a schematic diagram of the structure of an electric soldering iron provided in an embodiment of this application;

[0017] Figure 2a and Figure 2b This is an exploded view of the structure of a soldering iron provided in an embodiment of this application;

[0018] Figure 3 This is a schematic diagram of the circuit structure of a soldering iron provided in an embodiment of this application;

[0019] Figure 4 This is a schematic diagram of the circuit structure of a soldering iron according to another embodiment of this application;

[0020] Figure 5 This is a schematic diagram of the circuit structure of a soldering iron according to another embodiment of this application;

[0021] Figure 6 This is a circuit diagram of the battery protection circuit 202 provided in an embodiment of this application;

[0022] Figure 7 This is a schematic diagram of the circuit structure of a soldering iron according to another embodiment of this application;

[0023] Figures 8a to 8c This is a circuit diagram of the charging circuit 203 provided in the embodiments of this application;

[0024] Figure 9 This is a schematic diagram of the circuit structure of a soldering iron according to another embodiment of this application;

[0025] Figure 10 This is a circuit diagram of the vibration detection circuit 302 provided in an embodiment of this application;

[0026] Figure 11 This is a schematic diagram of the circuit structure of a soldering iron according to another embodiment of this application;

[0027] Figure 12 This is a circuit diagram of the first discharge circuit 401 provided in an embodiment of this application;

[0028] Figure 13 This is a circuit diagram of the second discharge circuit 402 provided in an embodiment of this application;

[0029] Figure 14 This is a circuit diagram of the main control module provided in an embodiment of this application;

[0030] Figure 15 This is a circuit diagram of the gear detection circuit 600 provided in the embodiments of this application;

[0031] Figure 16 This is a circuit diagram of the indicator light circuit 700 provided in an embodiment of this application;

[0032] Figure 17 This is a circuit diagram of the button circuit 800 provided in an embodiment of this application;

[0033] Figure 18 This is a circuit diagram of the current detection circuit 900 provided in an embodiment of this application;

[0034] Figure 19 This is a circuit diagram of the LED component provided in the embodiments of this application;

[0035] Figure 20 This is a circuit diagram of the LED start-up circuit provided in the embodiments of this application;

[0036] Figure 21 This is a circuit diagram of the two-stage overshoot protection circuit provided in the embodiments of this application.

[0037] In the diagram: 100 Soldering iron, 10 Soldering tip, 20 Soldering iron body, 21 Housing, 22 PCB board, 23 LED board, 24 Charging board, 25 Battery, 26 Vibration switch, 211 Button switch, 212 Status indicator light, 241 Charging port. Detailed Implementation

[0038] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected" to another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this specification are for illustrative purposes only.

[0039] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0040] Traditional soldering irons typically feature a simple push-button switch, allowing users to control the heating state by pressing or releasing it. When the switch is on, the iron heats continuously; when it's off, heating ceases. While traditional soldering irons have a simple heating element and power control module, they lack the ability to actively sense and control user actions, leading to several problems. For example, users sometimes forget to turn off the switch, leaving the iron heated for extended periods, increasing the risk of burns or fires. Furthermore, the continued heating even when not in use wastes energy. Therefore, traditional soldering irons suffer from problems such as an inability to intelligently sense user operation status, low energy efficiency, and safety hazards.

[0041] This application provides a soldering iron incorporating a vibration module that senses user actions. Upon detecting a user action, the module triggers a corresponding response, enhancing its intelligent sensing capability of the user's operating state. Using a static detection signal, the main control module triggers a timing unit. If a static state is continuously detected within a preset time, the main control module enters a sleep state, adjusting the discharge module to transmit a first current to the soldering tip, achieving intelligent control of the power-on state. When a vibration signal is detected, the main control module can cause the discharge module to transmit a second current to the soldering tip, with the second current being greater than the first current. This dynamic current control improves heating efficiency and solves the problems of low energy efficiency and safety hazards inherent in traditional soldering irons. Therefore, by comprehensively utilizing the vibration module, main control module, discharge module, and power supply module, the soldering iron solution of this application can intelligently sense the user's operating state, automatically control the heating state, improve energy efficiency and safety, and solve the problems existing in traditional soldering irons.

[0042] The following embodiment of this application provides a soldering iron, see [link to embodiment]. Figure 1 , Figure 2a and Figure 2b The soldering iron 100 includes a soldering tip 10 and a soldering iron body 20. The soldering iron body 20 includes a housing 21, a PCB board 22, a lamp board 23, and a charging board 24. The soldering tip 10 is detachably mounted on the front end of the housing 21.

[0043] A PCB board 22 is located inside the housing 21. A light board 23 is located at the front end of the housing 21 and connected to the PCB board 22. A charging board 24 is located at the rear end of the housing 21 and connected to the PCB board 22. Several LED lights can be mounted on the light board 23, with at least a portion of the LED lights exposed outside the housing 21. The housing 21 also has a push-button switch 211 and a status indicator light 212 connected to the PCB board 22. The housing 21 also has a charging port 241 for connecting to an external power source, which is also connected to the charging board 24. A battery 25 is also located inside the housing 21 for connecting to the charging board 24. Additionally, a vibration switch 26 connected to the PCB board 22 is also located inside the housing 21.

[0044] The PCB board 22 is used for circuit control and management of the soldering iron 100. The lamp board 23 is used for illumination. The charging board 24 is used for charging and managing the battery 25's power. The push-button switch 211 is used for user operation and control. The status indicator light 212 is used to display information such as heating status. The charging port 241 is used to connect to an external power source to charge the battery 25. The battery 25 provides power to the soldering iron 100. The vibration switch 26 can sense the user's actions and control the soldering iron's working state based on the vibration. For example, the vibration switch 26 can enter a closed state in response to the user's operation of the soldering iron 100, or enter an off state in response to the soldering iron 100 being stationary. For example, if there is no vibration for 15 seconds, the soldering iron 100 will automatically enter a low-power heating state; when vibration is detected, the soldering iron 100 will immediately resume normal heating operation; after 15 minutes of continuous use of the heating function, if there is no vibration, the soldering iron 100 will automatically turn off the heating function to save energy and ensure safety.

[0045] The working principle of the soldering iron 100 is as follows: Its core components include a PCB board 22, an LED board 23, a charging board 24, a push-button switch 211, a status indicator light 212, a charging port 241, a battery 25, and a vibration switch 26. The PCB board 22 is responsible for circuit control, the LED board 23 provides illumination, the charging board 24 manages battery power, the push-button switch 211 controls the functions, the status indicator light 212 displays the status, the charging port 241 connects to an external power source to charge the battery 25, and the battery 25 provides the power source. The vibration switch 26 senses user actions and adjusts the working state according to the vibration. If there is no vibration for 15 seconds, it automatically enters a low-power state; if there is vibration, it resumes operation. If there is no vibration for 15 consecutive minutes, it automatically shuts off the heating function, thus achieving an intelligent, efficient, and safe operating mechanism.

[0046] Specifically, see Figure 3The soldering iron body 20 of the soldering iron 100 includes a power module 200, a vibration module 300, a discharge module 400, and a main control module 500. The vibration module 300, the discharge module 400, and the main control module 500 can all be mounted on the aforementioned PCB board 22.

[0047] The power module 200 provides power to the entire soldering iron system, ensuring the soldering iron 100 operates normally and provides the necessary power to other modules. The power module 200 may include a battery, a power management chip, a charging interface, a voltage regulator circuit, an overload protection circuit, and a power switch. The battery can be a common power module, such as a lithium battery, and can be rechargeable or disposable. The power management chip monitors and controls the charging and discharging process of the battery to ensure a stable power supply to the soldering iron 100. The charging interface can be used to connect a charger to charge the soldering iron 100. The overload protection circuit prevents damage to the soldering iron 100 under abnormal conditions, protecting the device from current overload. The power switch can be a simple switch that allows the soldering iron 100 to intelligently control its power supply, and the user can also use this switch to control the power status of the soldering iron 100.

[0048] The vibration module 300 is used to detect the status of the soldering iron 100 and user operations. When the soldering iron 100 is stationary, the vibration module 300 can detect this stationary state and generate a stationary detection signal. The stationary detection signal refers to the signal generated by the vibration module 300 when the soldering iron is stationary. A stationary state means that the soldering iron 100 has not been moved or operated, and there is no obvious vibration or movement. The vibration module 300 can monitor the position or vibration state of the soldering iron 100 through built-in sensors or algorithms, and generates a stationary detection signal when it detects continuous stationary movement. When the user operates the soldering iron 100, the vibration module 300 can sense these movements and generate a vibration detection signal. The vibration detection signal refers to the signal generated by the vibration module 300 when the user operates the soldering iron. User operations usually cause the soldering iron 100 to vibrate or move; these movements are sensed by the vibration module 300 and converted into a vibration detection signal. The vibration module 300 can determine the user's operation by detecting changes in the acceleration of the soldering iron 100 or specific vibration patterns and generate corresponding vibration detection signals. In this way, by generating static detection signals and vibration detection signals, the system of soldering iron 100 can accurately identify the state of soldering iron 100, including when it is stationary and when it is operated by the user, thereby realizing intelligent control and corresponding functions.

[0049] The discharge module 400 is electrically connected to the power module 200, receiving electrical energy from the power module 200 and transmitting current to the soldering tip for heating. The discharge module 400 can control the current transmitted to the soldering tip, adjusting the current intensity according to the instructions of the main control module 500 to meet different heating requirements. For example, when the soldering iron 100 needs charging, the discharge module 400 may include a charger discharge circuit to transfer electrical energy from the charger to the battery for charging. When the soldering iron 100 is working, the discharge module 400 may include a battery discharge circuit to transfer the electrical energy stored in the battery to the soldering tip for heating. In sleep mode, the soldering iron 100 may enter a low-power heating state, during which the discharge module 400 can still output current to maintain the appropriate temperature of the soldering tip, allowing for rapid recovery when needed. In normal operation, the discharge module 400 will output the appropriate current as needed to ensure the soldering tip reaches the required heating temperature. Therefore, through the control of the discharge module 400, the soldering iron 100 can effectively manage current transmission, achieve precise control of heating temperature, and maintain appropriate current output in both sleep and working states to meet user needs and extend battery life.

[0050] The main control module 500 is electrically connected to the power supply module 200, vibration module 300, and discharge module 400 to achieve information transmission and control between these modules. The main control module 500 includes a timing unit 501 for measuring time and performing timing operations. When the timing unit 501 reaches a preset duration and a stationary detection signal is continuously detected during this period, the main control module 500 enters a sleep state. In the sleep state, the main control module 500 instructs the discharge module 400 to transmit a first current to the soldering iron tip. If the timing unit 501 does not reach the preset duration but a vibration detection signal is detected, the main control module 500 enters a normal operating state. In the operating state, the main control module 500 instructs the discharge module 400 to transmit a second current to the soldering iron tip, and the intensity of the second current is greater than the first current. Therefore, the main control module 500 can flexibly control the working state of the soldering iron 100 according to different static and vibration detection signals, realize current transmission adjustment under different conditions, improve the efficiency and performance of the soldering iron tip, and ensure that the system can enter a low-power sleep state when needed, thus extending battery life.

[0051] See Figure 4 In some embodiments, the power module 200 includes a battery 201, a battery protection circuit 202, and a charging circuit 203.

[0052] Battery 201 is electrically connected to vibration module 300, discharge module 400, and main control module 500 respectively, and is used to provide power; specifically, battery 201 can be... Figure 2bThe battery 25 shown is, for example, a lithium battery.

[0053] The battery protection circuit 202 is electrically connected to both the battery 201 and the main control module 500. It detects the operating information of the battery 201, enabling the main control module 500 to perform battery protection operations based on this information. The operating information refers to the monitored state and performance parameters of the battery 201, such as battery voltage, battery temperature, charging status, and discharging status. The battery protection operations refer to the actions performed based on the obtained operating information, such as overvoltage protection, undervoltage protection, overtemperature protection, short circuit protection, and charging management.

[0054] See Figure 5 The battery protection circuit 202 includes a first voltage detection circuit 2021 and a temperature protection circuit 2022. The first voltage detection circuit 2021 is electrically connected to both the battery 201 and the main control module 500, and is used to detect the battery voltage of the battery 201. The main control module 500 can perform corresponding voltage protection operations based on this battery voltage. The temperature protection circuit 2022 is electrically connected to both the battery 201 and the main control module 500, and is used to detect temperature-related information of the battery 201. The main control module 500 performs corresponding temperature protection operations based on this temperature-related information, which is correlated with the temperature of the battery 201.

[0055] Specifically, see Figure 6 , Figure 6 The system includes a first voltage detection circuit 2021 and a temperature protection circuit 2022. The positive terminal (B+) of the battery is connected to the first voltage detection circuit 2021, forming a voltage divider circuit through resistors R20 and R26 to monitor the battery voltage (VB_DET). The negative terminal (B-) of the battery is grounded. In the first voltage detection circuit 2021, resistors R20 and R26 form a voltage divider, allowing the main control module 500 to read the battery voltage. The voltage signal (VB_DET) is output from the voltage divider circuit for the main control module 500 to monitor the voltage. In the temperature protection circuit 2022, a temperature signal is output to the main control module 500 through two nodes (T_B and T_P) to monitor the battery temperature. VDD_IO is connected to the gear detection circuit 600 to adjust the monitoring and protection strategy for the operating temperature according to different gears. Under different gears, the battery may be subjected to different loads and temperatures, so the protection threshold and operating parameters need to be adjusted accordingly. In this embodiment, the battery voltage and temperature are monitored through different circuit components. The voltage detection component and the temperature protection component provide battery operating information to the main control module 500, respectively. Based on the received voltage (VB_DET) and temperature (T_B and T_P) signals, the main control module 500 executes corresponding battery protection operations, such as overvoltage protection and overtemperature protection.

[0056] The charging circuit 203 is electrically connected to both the discharging module 400 and the battery 201, providing power to both the battery 201 and the discharging module 400. (See also...) Figure 7 The charging circuit 203 includes a charging interface circuit 2031, a charging activation circuit 2032, and a charging management circuit 2033.

[0057] The charging interface circuit 2031 is used to connect to the adapter; the charging activation circuit 2032 is electrically connected to the charging interface circuit 2031 and the main control module 500 respectively, and is used to respond to the charging voltage output by the adapter through the charging interface circuit 2031, triggering the main control module 500 to control the discharge module 400 to receive the charging voltage input to transmit current to the soldering iron tip; the charging management circuit 2033 is electrically connected to the charging interface circuit 2031, the main control module 500 and the battery 201 respectively, and is used to respond to the charging voltage input to provide power to the battery 201.

[0058] Specifically, see Figures 8a to 8c The diagram shows the circuits for the charging interface circuit 2031, the charging activation circuit 2032, and the charging management circuit 2033. The charging interface circuit 2031 connects to an external charging adapter via a plug and is responsible for receiving the charging voltage output from the adapter. The charging interface circuit 2031 is also connected to the charging activation circuit 2032, which detects the charging voltage input through the charging interface and sends a signal to the main control module 500. The charging activation circuit 2032 is connected to the main control module 500, which controls subsequent charging and discharging operations based on the detected charging voltage. The charging interface circuit 2031 is also electrically connected to the charging management circuit 2033, which manages the charging process and ensures the safe charging of the battery 201.

[0059] The main function of the charging interface circuit 2031 is to receive power from the charging adapter and provide charging voltage. Through its connection with the charging activation circuit 2032, the charging interface circuit 2031 can detect the voltage output of the charging adapter, ensuring the adapter functions normally. When the charging voltage is detected, the charging activation circuit 2032 sends a signal to the main control module 500, triggering the discharge module 400 to receive the charging voltage and transmit current to the soldering iron tip. Furthermore, the connection between the charging interface circuit 2031 and the charging management circuit 2033 enables it to effectively manage the battery charging process, ensuring that the battery 201 is charged under appropriate conditions and preventing overcharging.

[0060] The charging activation circuit 2032 includes resistors R36 and R37 and an NPN transistor Q10. One end of R36 is connected to VCC, and the other end is connected to the base of Q10. One end of R37 is connected to the base of Q10, and the other end is connected to the emitter of Q10. The function of R37 is to set the voltage difference between the base and emitter, affecting the conduction state of Q10. The base of Q10 is connected to the intersection of R36 and R37, receiving the current signal from R36. The collector of Q10 is connected to the charging detection signal (CHG_DET), used for outputting a signal indicating the charging voltage status. The emitter of Q10 is connected to ground through R37. R36 and R37 together act on the base of Q10, ensuring that Q10 conducts when the charging voltage is appropriate, and causing a change in the CHG_DET signal, thereby transmitting charging status information to the main control module 500.

[0061] The charging management circuit 2033 includes an integrated circuit U1 for charging management, responsible for controlling the charging process; power supply capacitors C1 and C2 for smoothing input and output voltages and reducing power supply fluctuations; an inductor L1 for regulating the charging current; resistors R1 and R12, where R1 is used for current limiting or current detection, and R12 is used for current feedback or signal conditioning; and charging status pins (NCHRG and CHG_ENO), where NCHRG indicates the charging status and CHG_ENO controls the start and stop of charging. The charging management circuit 2033 intelligently regulates the charging current and voltage through the integrated circuit U1 to ensure safe battery charging, while also providing charging status indication and temperature monitoring functions.

[0062] See Figure 9 In some embodiments, the vibration module 300 includes a vibration switch 301 and a vibration detection circuit 302.

[0063] The vibration switch 301 is used to enter a closed state in response to the user's operation of the soldering iron 100, or to enter a closed state in response to the soldering iron being stationary. The vibration detection circuit 302 is electrically connected to the vibration switch 301, and is used to form a closed loop with the vibration switch 301 in response to the vibration switch 301 entering the closed state to output a vibration detection signal; or to output a stationary detection signal in response to the vibration switch 301 entering the closed state.

[0064] The vibration detection circuit 302 includes a current-limiting voltage divider circuit 3021 and a filter circuit 3022. The current-limiting voltage divider circuit 3021 includes a first node, a second node, and a third node. Power is applied to the first node, and the vibration switch 301 is electrically connected to the second node. The third node is used to output the vibration detection signal or the stationary detection signal. The filter circuit 3022 is electrically connected between the first node and the second node.

[0065] See Figure 10The current limiting and voltage divider circuit 3021 includes a first resistor R9 and a second resistor R10. The filter circuit 3022 includes a first capacitor C6. The first resistor R9 is connected to the first node and the third node respectively. The first capacitor C6 is connected in parallel with the first resistor R9. The second resistor R10 is connected to the third node and the second node respectively.

[0066] The vibration module 300 monitors the status of the soldering iron 100 in real time through the vibration switch 301 and the vibration detection circuit 302. Based on the opening and closing of the vibration switch, the vibration module 300 outputs corresponding signals to ensure the safe and effective management of the soldering iron 100 during use. The working principle of the vibration module 300 specifically includes: First, the vibration switch 301 responds to the status. When the user operates the soldering iron 100, the vibration switch 301 detects vibration and enters a closed state. If the soldering iron is stationary, the vibration switch 301 opens and enters an off state. The vibration detection circuit 302 is electrically connected to the vibration switch 301 and is responsible for handling the state changes of the switch. The current-limiting voltage divider circuit 3021, which includes a first resistor R9 and a second resistor R10, forms a voltage divider through R9 and R10 when the vibration switch 301 is closed, and the third node outputs a vibration detection signal. When the vibration switch 301 is open, the third node outputs a stationary detection signal. The filter circuit 3022, which includes a first capacitor C6 connected in parallel with the first resistor R9, smooths the signal and reduces noise interference caused by vibration state changes, thus ensuring the stability of the output signal. Finally, the signal output includes a vibration detection signal: when the soldering iron 100 is active, the vibration detection circuit 302 outputs a vibration detection signal, indicating that the soldering iron 100 is in use; and a stationary detection signal: when the soldering iron 100 is stationary, the circuit outputs a stationary detection signal, indicating that the soldering iron 100 is in standby mode.

[0067] See Figure 11In some embodiments, the discharge module 400 includes a first discharge circuit 401 and a second discharge circuit 402. The first discharge circuit 401 is electrically connected to the charging interface circuit 2031 and the main control module 500, respectively, and is used to enter the discharge state in response to a first discharge signal output by the main control module 500, so that the current corresponding to the charging voltage is transmitted to the soldering iron tip through the first discharge circuit 401. The second discharge circuit 402 is electrically connected to the battery 201 and the main control module 500, respectively, and is used to enter the discharge state in response to a second discharge signal output by the main control module 500, so that the current output by the battery 201 is transmitted to the soldering iron tip through the second discharge circuit 402. Depending on the working state of the soldering iron 100 and the user's operation, the main control module 500 will output two different discharge signals: a first discharge signal for controlling the first discharge circuit 401 and a second discharge signal for controlling the second discharge circuit 402. When the main control module 500 outputs the first discharge signal, the first discharge circuit 401 enters the discharge state. The current corresponding to the charging voltage flows through the first discharge circuit 401 to the soldering iron tip, providing the necessary heat for soldering or other operations. When the main control module 500 outputs the second discharge signal, the second discharge circuit 402 enters the discharge state. The current output by the battery 201 flows through the second discharge circuit 402 to the soldering iron tip, ensuring that the soldering iron can still work when the power supply is not connected. The main control module 500 also monitors the current and temperature during the discharge process to ensure that it operates within a safe range and prevents overheating or overcurrent. In this embodiment, the discharge module 400, through the first discharge circuit 401 and the second discharge circuit 402, flexibly responds to the discharge signal of the main control module 500. Whether the current is from the charging interface or the battery, it can effectively transmit the current to the soldering iron tip, achieving efficient discharge and heating functions.

[0068] Specifically, see Figure 12 The first discharge circuit 401 includes a power interface connected to VCC to provide power. It also includes switching elements Q1, Q2, Q3, and Q4, which control the discharge process; for example, Q1 and Q2 jointly control the forward discharge path, and Q3 and Q4 jointly control the negative discharge path. It further includes resistors R2, R3, R4, R5, R6, and R7, which are used for current limiting, biasing, and voltage division. It also includes a discharge output terminal p+, which is connected to the soldering iron tip. Finally, it includes a node V_DSG, which is connected to the main control module 500 as a signal source for monitoring the discharge status. V_DSG represents a specific voltage level, which the main control module 500 can read to determine the operating status of the discharge circuit. Furthermore, changes in the V_DSG voltage level can provide feedback on the status of the discharge circuit, helping the main control module 500 to perform real-time control and protection.

[0069] See Figure 13The second discharge circuit 402 receives the positive input from the battery through a power interface to provide power. It also includes switching elements Q6, Q7, Q8, and Q9, which control the discharge process. For example, Q6 and Q7 jointly control the forward discharge path, and Q8 and Q9 jointly control the negative discharge path. Resistors R16, R17, R18, R19, R23, and R24 are also included. These resistors are used for current limiting, biasing, and voltage division. For example, R16 and R18 can be used for gate driving of Q6 and Q7, and R17 and R19 are used for signal feedback or current detection. A discharge output terminal p+ is also included, which connects to the soldering iron tip. A node B_DSG is also included, used to monitor or control the battery's discharge state, and can be connected to the main control module 500.

[0070] See Figure 14 The main control module 500 includes a main control chip U2, which is the core of the main control module 500 and can be a microcontroller (MCU) or an application-specific integrated circuit (ASIC). It also includes power connection nodes, B+ and B-, which are connected to power supplies to provide power to the main control module 500 and other modules, ensuring normal system operation. Pin 1 of the main control chip U2 is connected to node B_DSG, which is used to monitor the discharge state and provide feedback to the main control module 500 on the current status of the soldering iron 100, ensuring that the current is adjusted at the appropriate time. The main control chip U2 also processes signals from the vibration module to determine whether the soldering iron 100 is stationary or in use, and controls the current output of the discharge module based on the status of the stationary detection signal and the vibration detection signal. The main control module 500 also includes a timing unit, which can be integrated into the main control chip U2, to monitor the stationary time. When the soldering iron remains stationary for more than a preset time, a sleep mode is triggered to reduce power consumption. It also includes diodes D9 and D10, which prevent reverse current from damaging the main control module 500 and protect the circuit. It also includes capacitors C5 and CV1, which filter power supply noise and ensure that the main control module 500 receives a stable voltage. In this embodiment, the main control module 500 plays a crucial role in the soldering iron. It maximizes the efficiency and safety of the soldering iron by intelligently controlling current output, managing sleep mode, and enabling user interaction. The main control module 500, through close cooperation with the power supply, vibration, and discharge modules, achieves intelligent soldering iron operation.

[0071] In some embodiments, the soldering iron body further includes a gear detection circuit 600, an indicator light circuit 700, and a button circuit 800. The main control module 500 is electrically connected to the gear detection circuit 600, the indicator light circuit 700, and the button circuit 800, respectively. The main control module 500 is used to respond to the gear detection signal output by the gear detection circuit 600 and control the working state of the indicator light circuit 700. The button circuit 800 is also electrically connected to the power module 200 and is used to respond to the received press operation and generate a button signal. The main control module 500 is also used to respond to the button signal and the stillness detection signal to trigger the timing unit 501 to perform a timing operation.

[0072] Among them, see Figure 15 The gear detection circuit 600 includes a sliding rheostat. The first end of the sliding rheostat is powered, the second end of the sliding rheostat is grounded, and the third end of the sliding rheostat is electrically connected to the main control module 500 through the node CHAN. The sliding rheostat is used to respond to the user's sliding operation and outputs a gear detection signal based on the third end, so that the main control module 500 can obtain the current gear of the soldering iron.

[0073] Among them, see Figure 16 One end of the indicator light circuit 700 is connected to the power supply, providing the necessary voltage. Indicator lights L1, L2, and L3 are different indicator lights used to display the working status or speed setting of the soldering iron. Each indicator light corresponds to a different working mode (such as standby, working, overheating, etc.). Diodes D7, D8, D11, D12, D13, D14, D15, and D16 are used to prevent reverse current flow, protect circuit components, and ensure that the indicator lights can be safely lit in different working states. The diodes are connected in series with the indicator lights; current can only flow through the diodes to light the corresponding indicator lights when the main control module 500 sends a signal. The main control module 500 receives a speed setting detection signal from the speed setting detection circuit 600 to determine the current working speed setting of the soldering iron. Based on this signal, the main control module 500 controls the working state of the indicator light circuit 700, lighting the corresponding indicator lights to provide feedback to the user on the current status. For example, when the main control module 500 enters sleep mode, it controls the indicator light circuit 700 to generate a first color light; when the main control module 500 enters normal operating mode, it controls the indicator light circuit 700 to generate a second color light. For example, the gear detection circuit is electrically connected to the main control module 500 and is configured to output a gear detection signal, which indicates the current heating gear of the soldering iron. The main control module 500 is configured to respond to this gear detection signal, obtain a preset heating gear, and if the current heating gear does not match the preset heating gear, control the indicator light circuit 700 to generate a third color light; if the current heating gear matches the preset heating gear, control the indicator light circuit 700 to generate a fourth color light.

[0074] Among them, see Figure 17 The button circuit 800 includes a button S1, which is connected to the power module 200 and the main control module 500. When S1 is pressed, the circuit closes, and current flows to the SW_POW terminal. The SW_POW terminal is connected to the main control module 500 and is used to transmit the button signal. The main control module 500 responds to this signal and performs corresponding operations, such as controlling the on / off state of the soldering iron or switching the working mode. In this embodiment, the main control module 500 is also used to trigger the timing unit 501 to perform a timing operation in response to the button signal and the aforementioned stillness detection signal.

[0075] In some embodiments, the soldering iron body further includes a current detection circuit 900, which is electrically connected to the power supply module 200 and the main control module 500, respectively, for detecting the current transmitted from the discharge module 400 to the soldering iron tip, so that the main control module 500 performs overcurrent protection operation based on the detected current. See also... Figure 18 The current detection circuit 900 includes two ports, P- and B-, which are connected to the power supply module 200 and ground, respectively, forming the power supply section of the current detection circuit 900. It also includes resistors R31 and R32. R31 is used to monitor the current, reflecting the magnitude of the current flow through the voltage drop across it. R32 can act as a shunt resistor to help adjust the sensitivity of the current sensor or form a current detection network with R31. It also includes a CUR_DET port, which is connected to the main control module 500. This port sends the current detection signal to the main control module 500, which monitors the current based on this signal and determines whether overcurrent protection is triggered.

[0076] In some embodiments, the soldering iron body further includes a lighting module, which is electrically connected to the power module 200 and the main control module 500 respectively. When the main control module 500 enters a sleep state, the main control module 500 controls the lighting module to enter a stopped lighting state. When the main control module 500 enters a normal working state, the main control module 500 controls the lighting module to enter a normal lighting state.

[0077] See Figure 19 and Figure 20 The lighting module includes: an LED assembly electrically connected to the power supply module 200; and an LED start-up circuit electrically connected to both the LED assembly and the main control module 500, configured to control the LED assembly to emit light in response to a start signal sent by the main control module 500, or to control the LED assembly to stop emitting light in response to a turn-off signal sent by the main control module 500. Figure 19 It is an LED component, which consists of multiple LEDs (D1 to D6) connected in series or parallel. When powered on, the LED component emits light to provide illumination for the user. Figure 20This is an LED startup circuit, including a power input terminal (B+), a signal control terminal (LED_EN), resistors R14 and R15, and transistor Q1. For example, when the main control module 500 is in normal operation, it sends a startup signal (LED_EN high level), turning on the transistor and causing the LED to light up; when the main control module 500 enters sleep mode, it stops sending startup signals, the transistor turns off, and the LED stops lighting up.

[0078] In some embodiments, see Figure 21 The soldering iron body also includes a secondary overcharge protection circuit, which is electrically connected to the battery circuit and configured to perform overcharge protection operations based on the charging state of the battery circuit. The secondary overcharge protection circuit mainly includes power input terminals (B+ and B-), connected to the battery circuit, providing charging power and ground. It also includes an integrated circuit U3, which can be a dedicated protection chip for battery management, responsible for monitoring the battery's charging state and performing protection operations. Resistors R33 and R34 are also included; R33 can be a current-limiting resistor, and R34 can be used to set circuit operating parameters or monitor the charging state. A filter capacitor C4 is also included. Switches S1 and S2 are included, which can be used to manually or automatically switch the circuit's operating state, facilitating entry into different operating modes (such as charging and discharging). The secondary overcharge protection circuit, through the integrated circuit U3 and related passive components (resistors and capacitors), implements the function of monitoring and protecting the battery's charging state. This circuit effectively prevents battery overcharging, improves the safety and lifespan of the soldering iron, and ensures user safety during use.

[0079] It should be noted that while the preferred embodiments of this utility model are provided in the specification and accompanying drawings, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are not intended to impose additional limitations on the content of this utility model; their purpose is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Furthermore, the above-described technical features can be combined with each other to form various embodiments not listed above, all of which are considered to be within the scope of this utility model specification. Moreover, those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A soldering iron, comprising a soldering tip and a soldering iron body, wherein the soldering iron body is connected to the soldering tip, characterized in that, The soldering iron body includes: The power module is used to provide power. The vibration module is used to generate a static detection signal in response to the soldering iron being in a static state, or to generate a vibration detection signal in response to the user's operation of the soldering iron. The discharge module is electrically connected to the power module and is used to transmit current to the soldering iron tip; The main control module is electrically connected to the power module, the vibration module, and the discharge module. The main control module includes a timing unit. In response to the stationary detection signal, the main control module triggers the timing unit to perform a timing operation. When the timing unit's timing time reaches a preset duration and the stationary detection signal is continuously detected within that duration, the main control module enters a sleep state to allow the discharge module to transmit a first current to the soldering iron tip. When the timing unit's timing time does not reach the preset duration and the vibration detection signal is detected, the main control module enters a normal operating state to allow the discharge module to transmit a second current to the soldering iron tip, the second current being greater than the first current.

2. The soldering iron according to claim 1, characterized in that, The vibration module includes: The vibration switch is used to enter a closed state in response to the user's operation of the soldering iron, or to enter an off state in response to the soldering iron being stationary. A vibration detection circuit, electrically connected to the vibration switch, is used to respond to the vibration switch entering a closed state, forming a closed loop with the vibration switch to output the vibration detection signal; or, in response to the vibration switch entering a closed state, to output the stationary detection signal.

3. The soldering iron according to claim 2, characterized in that, The vibration detection circuit includes: The current-limiting voltage divider circuit includes a first node, a second node, and a third node. The first node is supplied with the power, the vibration switch is electrically connected to the second node, and the third node is used to output the vibration detection signal or the stationary detection signal. The filter circuit is electrically connected between the first node and the second node.

4. The soldering iron according to claim 3, characterized in that, The current-limiting voltage divider circuit includes a first resistor and a second resistor, the filter circuit includes a first capacitor, the first resistor is connected to the first node and the third node respectively, the first capacitor is connected in parallel with the first resistor, and the second resistor is connected to the third node and the second node respectively.

5. The soldering iron according to claim 1, characterized in that, The soldering iron body also includes a speed setting detection circuit, an indicator light circuit, and a button circuit. The main control module is electrically connected to the speed setting detection circuit, the indicator light circuit, and the button circuit, respectively. The main control module is used to respond to the gear detection signal output by the gear detection circuit and control the working state of the indicator light circuit; The button circuit is also electrically connected to the power module and is used to generate a button signal in response to a received press operation; the main control module is also used to trigger the timing unit to perform a timing operation in response to the button signal and the stillness detection signal.

6. The soldering iron according to claim 5, characterized in that, The gear position detection circuit includes a sliding rheostat. The first end of the sliding rheostat is supplied with the power supply, the second end of the sliding rheostat is grounded, and the third end of the sliding rheostat is electrically connected to the main control module. The sliding rheostat is used to respond to the user's sliding operation and outputs the gear position detection signal based on the third end.

7. The soldering iron according to any one of claims 1 to 6, characterized in that, The power module includes: The battery is electrically connected to the vibration module, the discharge module, and the main control module respectively, and is used to provide power. A battery protection circuit is electrically connected to both the battery and the main control module, and is used to detect the battery's operating information so that the main control module can perform battery protection operations based on the operating information. The charging circuit is electrically connected to both the discharging module and the battery, and is used to provide power to the battery and the discharging module.

8. The soldering iron according to claim 7, characterized in that, The charging circuit includes: The charging interface circuit is used to connect to the adapter; The charging activation circuit is electrically connected to the charging interface circuit and the main control module respectively. It is used to respond to the charging voltage output by the adapter through the charging interface circuit, and trigger the main control module to control the discharging module to receive the input of the charging voltage to transmit current to the soldering iron tip. The charging management circuit is electrically connected to the charging interface circuit, the main control module, and the battery, respectively, and is used to respond to the input of the charging voltage and provide power to the battery.

9. The soldering iron according to claim 8, characterized in that, The discharge module includes: The first discharge circuit is electrically connected to the charging interface circuit and the main control module, respectively, and is used to enter the discharge state in response to the first discharge signal output by the main control module, so that the current corresponding to the charging voltage is transmitted to the soldering iron tip through the first discharge circuit. The second discharge circuit is electrically connected to both the battery and the main control module. It is used to enter the discharge state in response to the second discharge signal output by the main control module, so that the current output by the battery is transmitted to the soldering iron tip via the second discharge circuit.

10. The soldering iron according to any one of claims 1 to 6, characterized in that, The soldering iron body also includes a current detection circuit, which is electrically connected to the power module and the main control module respectively, and is used to detect the current transmitted by the discharge module to the soldering iron tip, so that the main control module can perform overcurrent protection operation according to the detected current.

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